class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_hazard
is_stochastic = True
def gen_args(self, monitor):
"""
:yields: the arguments for compute_gmfs_and_curves
"""
oq = self.oqparam
param = dict(oqparam=oq,
min_iml=self.get_min_iml(oq),
truncation_level=oq.truncation_level,
imtls=oq.imtls,
filter_distance=oq.filter_distance,
seed=oq.ses_seed,
maximum_distance=oq.maximum_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path)
concurrent_tasks = oq.concurrent_tasks
if oq.hazard_calculation_id:
U = len(self.datastore.parent['ruptures'])
logging.info('Found %d ruptures', U)
parent = self.can_read_parent() or self.datastore
samples_by_grp = self.csm_info.get_samples_by_grp()
for slc in split_in_slices(U, concurrent_tasks or 1):
for grp_id in self.rlzs_by_gsim_grp:
rlzs_by_gsim = self.rlzs_by_gsim_grp[grp_id]
ruptures = RuptureGetter(parent, slc, grp_id)
param['samples'] = samples_by_grp[grp_id]
yield ruptures, self.sitecol, rlzs_by_gsim, param, monitor
return
maxweight = self.csm.get_maxweight(weight, concurrent_tasks or 1)
logging.info('Using maxweight=%d', maxweight)
num_tasks = 0
num_sources = 0
for sm in self.csm.source_models:
param['samples'] = sm.samples
for sg in sm.src_groups:
rlzs_by_gsim = self.rlzs_by_gsim_grp[sg.id]
self.csm.add_infos(sg.sources)
if sg.src_interdep == 'mutex': # do not split
yield sg, self.src_filter, rlzs_by_gsim, param, monitor
num_tasks += 1
num_sources += len(sg.sources)
continue
for block in block_splitter(sg.sources, maxweight, weight):
yield block, self.src_filter, rlzs_by_gsim, param, monitor
num_tasks += 1
num_sources += len(block)
logging.info('Sent %d sources in %d tasks', num_sources, num_tasks)
def zerodict(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
if self.oqparam.hazard_calculation_id is None:
# filter_csm must be called first
self.src_filter, self.csm = self.filter_csm()
self.csm_info = self.csm.info
else:
self.datastore.parent = datastore.read(
self.oqparam.hazard_calculation_id)
self.csm_info = self.datastore.parent['csm_info']
self.rlzs_by_gsim_grp = self.csm_info.get_rlzs_by_gsim_grp()
self.L = len(self.oqparam.imtls.array)
self.R = self.csm_info.get_num_rlzs()
zd = AccumDict({r: ProbabilityMap(self.L) for r in range(self.R)})
zd.eff_ruptures = AccumDict()
self.grp_trt = self.csm_info.grp_by("trt")
return zd
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
oq = self.oqparam
if oq.save_ruptures and not oq.ground_motion_fields:
self.gmf_size += max_gmf_size(
result['ruptures'], self.csm_info.rlzs_assoc.get_rlzs_by_gsim,
self.csm_info.get_samples_by_grp(), len(self.oqparam.imtls))
if hasattr(result, 'calc_times'):
for srcid, nsites, eids, dt in result.calc_times:
info = self.csm.infos[srcid]
info.num_sites += nsites
info.calc_time += dt
info.num_split += 1
info.events += len(eids)
if hasattr(result, 'eff_ruptures'):
acc.eff_ruptures += result.eff_ruptures
if hasattr(result, 'events'):
self.datastore.extend('events', result.events)
self.save_ruptures(result['ruptures'])
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
if 'gmdata' in result:
self.gmdata += result['gmdata']
data = result['gmfdata']
with sav_mon:
self.datastore.extend('gmf_data/data', data)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def save_ruptures(self, ruptures_by_grp_id):
"""
Extend the 'events' dataset with the events from the given ruptures;
also, save the ruptures if the flag `save_ruptures` is on.
:param ruptures_by_grp_id: a dictionary grp_id -> list of EBRuptures
"""
with self.monitor('saving ruptures', autoflush=True):
for grp_id, ebrs in ruptures_by_grp_id.items():
if len(ebrs):
events = get_events(ebrs)
dset = self.datastore.extend('events', events)
if self.oqparam.save_ruptures:
self.rupser.save(ebrs, eidx=len(dset) - len(events))
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). They could be relaxed in the future.
"""
max_ = dict(sites=2**16, events=2**32, imts=2**8)
try:
events = len(self.datastore['events'])
except KeyError:
events = 0
num_ = dict(sites=len(self.sitecol),
events=events,
imts=len(self.oqparam.imtls))
for var in max_:
if num_[var] > max_[var]:
raise ValueError('The event based calculator is restricted to '
'%d %s, got %d' % (max_[var], var, num_[var]))
def execute(self):
if self.oqparam.hazard_calculation_id:
def saving_sources_by_task(allargs, dstore):
return allargs
else:
from openquake.calculators.classical import saving_sources_by_task
self.gmdata = {}
self.offset = 0
self.gmf_size = 0
self.indices = collections.defaultdict(list) # sid, idx -> indices
acc = self.zerodict()
with self.monitor('managing sources', autoflush=True):
allargs = self.gen_args(self.monitor('classical'))
iterargs = saving_sources_by_task(allargs, self.datastore)
if isinstance(allargs, list):
# there is a trick here: if the arguments are known
# (a list, not an iterator), keep them as a list
# then the Starmap will understand the case of a single
# argument tuple and it will run in core the task
iterargs = list(iterargs)
if self.oqparam.ground_motion_fields is False:
logging.info('Generating ruptures only')
ires = parallel.Starmap(self.core_task.__func__,
iterargs).submit_all()
acc = ires.reduce(self.agg_dicts, acc)
if self.oqparam.hazard_calculation_id is None:
with self.monitor('store source_info', autoflush=True):
self.store_source_info(self.csm.infos, acc)
self.check_overflow() # check the number of events
base.save_gmdata(self, self.R)
if self.indices:
N = len(self.sitecol.complete)
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices',
measuremem=True,
autoflush=True):
dset = self.datastore.create_dset('gmf_data/indices',
hdf5.vuint32,
shape=(N, 2),
fillvalue=None)
for sid in self.sitecol.complete.sids:
dset[sid, 0] = self.indices[sid, 0]
dset[sid, 1] = self.indices[sid, 1]
elif (self.oqparam.ground_motion_fields
and 'ucerf' not in self.oqparam.calculation_mode):
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def save_gmf_bytes(self):
"""Save the attribute nbytes in the gmf_data datasets"""
ds = self.datastore
for sm_id in ds['gmf_data']:
ds.set_nbytes('gmf_data/' + sm_id)
ds.set_nbytes('gmf_data')
def init(self):
"""
Set the random seed passed to the SourceManager and the
minimum_intensity dictionary.
"""
self.rupser = calc.RuptureSerializer(self.datastore)
def post_execute(self, result):
"""
Save the SES collection
"""
oq = self.oqparam
N = len(self.sitecol.complete)
L = len(oq.imtls.array)
if oq.hazard_calculation_id is None:
self.rupser.close()
num_events = sum(set_counts(self.datastore, 'events').values())
if num_events == 0:
raise RuntimeError(
'No seismic events! Perhaps the investigation time is too '
'small or the maximum_distance is too small')
if oq.save_ruptures:
logging.info('Setting %d event years on %d ruptures',
num_events, self.rupser.nruptures)
with self.monitor('setting event years',
measuremem=True,
autoflush=True):
numpy.random.seed(self.oqparam.ses_seed)
set_random_years(self.datastore, 'events',
int(self.oqparam.investigation_time))
if self.gmf_size:
self.datastore.set_attrs('events', max_gmf_size=self.gmf_size)
msg = 'less than ' if self.get_min_iml(self.oqparam).sum() else ''
logging.info('Generating %s%s of GMFs', msg,
humansize(self.gmf_size))
if oq.hazard_curves_from_gmfs:
rlzs = self.csm_info.rlzs_assoc.realizations
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
hstats = self.oqparam.hazard_stats()
if len(hstats):
logging.info('Computing statistical hazard curves')
for kind, stat in hstats:
pmap = compute_pmap_stats(result.values(), [stat], weights)
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves/' + kind] = arr
self.save_hmaps()
if self.datastore.parent:
self.datastore.parent.open('r')
if 'gmf_data' in self.datastore:
self.save_gmf_bytes()
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
rdiff, index = util.max_rel_diff_index(cl_mean_curves,
eb_mean_curves)
logging.warn(
'Relative difference with the classical '
'mean curves: %d%% at site index %d', rdiff * 100, index)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
@cached_property
def csm_info(self):
"""
:returns: a cached CompositionInfo object
"""
try:
return self.csm.info
except AttributeError:
return self.datastore.parent['csm_info']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
self.rupser = calc.RuptureSerializer(self.datastore)
self.rlzs_by_gsim_grp = self.csm_info.get_rlzs_by_gsim_grp()
self.samples_by_grp = self.csm_info.get_samples_by_grp()
def from_ruptures(self, param, monitor):
"""
:yields: the arguments for compute_gmfs_and_curves
"""
oq = self.oqparam
concurrent_tasks = oq.concurrent_tasks
U = len(self.datastore.parent['ruptures'])
logging.info('Found %d ruptures', U)
parent = self.can_read_parent() or self.datastore
for slc in split_in_slices(U, concurrent_tasks or 1):
for grp_id in self.rlzs_by_gsim_grp:
rlzs_by_gsim = self.rlzs_by_gsim_grp[grp_id]
ruptures = RuptureGetter(parent, slc, grp_id)
par = param.copy()
par['samples'] = self.samples_by_grp[grp_id]
yield ruptures, self.sitecol, rlzs_by_gsim, par, monitor
def zerodict(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.R = self.csm_info.get_num_rlzs()
self.L = len(self.oqparam.imtls.array)
zd = AccumDict({r: ProbabilityMap(self.L) for r in range(self.R)})
zd.eff_ruptures = AccumDict()
self.grp_trt = self.csm_info.grp_by("trt")
return zd
def _store_ruptures(self, ires):
gmf_size = 0
calc_times = AccumDict(accum=numpy.zeros(3, F32))
for srcs in ires:
for src in srcs:
# save the events always; save the ruptures
# if oq.save_ruptures is true
self.save_ruptures(src.eb_ruptures)
gmf_size += max_gmf_size(
{src.src_group_id: src.eb_ruptures},
self.rlzs_by_gsim_grp,
self.samples_by_grp,
len(self.oqparam.imtls))
calc_times += src.calc_times
del src.calc_times
yield from src.eb_ruptures
del src.eb_ruptures
self.rupser.close()
if gmf_size:
self.datastore.set_attrs('events', max_gmf_size=gmf_size)
msg = 'less than ' if self.get_min_iml(self.oqparam).sum() else ''
logging.info('Estimating %s%s of GMFs', msg, humansize(gmf_size))
with self.monitor('store source_info', autoflush=True):
self.store_source_info(calc_times)
eff_ruptures = {
grp.id: sum(src.num_ruptures for src in grp)
for grp in self.csm.src_groups}
self.store_csm_info(eff_ruptures)
def from_sources(self, par, monitor):
"""
Prefilter the composite source model and store the source_info
"""
self.R = self.csm.info.get_num_rlzs()
num_rlzs = {grp_id: sum(
len(rlzs) for rlzs in self.rlzs_by_gsim_grp[grp_id].values())
for grp_id in self.rlzs_by_gsim_grp}
param = {'ruptures_per_block': RUPTURES_PER_BLOCK}
param['filter_distance'] = self.oqparam.filter_distance
param['ses_per_logic_tree_path'] = self.oqparam.ses_per_logic_tree_path
param['gsims_by_trt'] = self.csm.gsim_lt.values
param['pointsource_distance'] = self.oqparam.pointsource_distance
logging.info('Building ruptures')
ires = parallel.Starmap.apply(
build_ruptures,
(self.csm.get_sources(), self.src_filter, param, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
weight=operator.attrgetter('num_ruptures'),
key=operator.attrgetter('src_group_id'))
def weight(ebr):
return numpy.sqrt(num_rlzs[ebr.grp_id] * ebr.multiplicity *
len(ebr.sids))
for ruptures in block_splitter(self._store_ruptures(ires), BLOCKSIZE,
weight, operator.attrgetter('grp_id')):
ebr = ruptures[0]
rlzs_by_gsim = self.rlzs_by_gsim_grp[ebr.grp_id]
par = par.copy()
par['samples'] = self.samples_by_grp[ebr.grp_id]
yield ruptures, self.src_filter, rlzs_by_gsim, par, monitor
self.setting_events()
if self.oqparam.ground_motion_fields:
logging.info('Building GMFs')
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
# in UCERF
if hasattr(result, 'ruptures_by_grp'):
for ruptures in result.ruptures_by_grp.values():
self.save_ruptures(ruptures)
elif hasattr(result, 'events_by_grp'):
for grp_id in result.events_by_grp:
events = result.events_by_grp[grp_id]
self.datastore.extend('events', events)
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
if 'gmdata' in result:
self.gmdata += result['gmdata']
data = result.pop('gmfdata')
with sav_mon:
self.datastore.extend('gmf_data/data', data)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def save_ruptures(self, ruptures):
"""
Extend the 'events' dataset with the events from the given ruptures;
also, save the ruptures if the flag `save_ruptures` is on.
:param ruptures: a list of EBRuptures
"""
if len(ruptures):
events = get_events(ruptures)
dset = self.datastore.extend('events', events)
if self.oqparam.save_ruptures:
self.rupser.save(ruptures, eidx=len(dset)-len(events))
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). They could be relaxed in the future.
"""
max_ = dict(sites=2**16, events=2**32, imts=2**8)
try:
events = len(self.datastore['events'])
except KeyError:
events = 0
num_ = dict(sites=len(self.sitecol), events=events,
imts=len(self.oqparam.imtls))
for var in max_:
if num_[var] > max_[var]:
raise ValueError(
'The event based calculator is restricted to '
'%d %s, got %d' % (max_[var], var, num_[var]))
def execute(self):
oq = self.oqparam
self.gmdata = {}
self.offset = 0
self.indices = collections.defaultdict(list) # sid, idx -> indices
param = dict(
oqparam=oq, min_iml=self.get_min_iml(oq),
save_ruptures=oq.save_ruptures,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
imtls=oq.imtls, filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path)
if oq.hazard_calculation_id: # from ruptures
assert oq.ground_motion_fields, 'must be True!'
self.datastore.parent = datastore.read(oq.hazard_calculation_id)
iterargs = self.from_ruptures(param, self.monitor())
else: # from sources
iterargs = self.from_sources(param, self.monitor())
if oq.ground_motion_fields is False:
for args in iterargs: # store the ruptures/events
pass
return {}
acc = parallel.Starmap(
self.core_task.__func__, iterargs, self.monitor()
).reduce(self.agg_dicts, self.zerodict())
self.check_overflow() # check the number of events
base.save_gmdata(self, self.R)
if self.indices:
N = len(self.sitecol.complete)
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices', measuremem=True,
autoflush=True):
dset = self.datastore.create_dset(
'gmf_data/indices', hdf5.vuint32,
shape=(N, 2), fillvalue=None)
for sid in self.sitecol.complete.sids:
dset[sid, 0] = self.indices[sid, 0]
dset[sid, 1] = self.indices[sid, 1]
elif (oq.ground_motion_fields and
'ucerf' not in oq.calculation_mode):
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def save_gmf_bytes(self):
"""Save the attribute nbytes in the gmf_data datasets"""
ds = self.datastore
for sm_id in ds['gmf_data']:
ds.set_nbytes('gmf_data/' + sm_id)
ds.set_nbytes('gmf_data')
def setting_events(self):
"""
Call set_random_years on the events dataset
"""
if self.oqparam.hazard_calculation_id is None:
num_events = sum(set_counts(self.datastore, 'events').values())
if num_events == 0:
raise RuntimeError(
'No seismic events! Perhaps the investigation time is too '
'small or the maximum_distance is too small')
if self.oqparam.save_ruptures:
logging.info('Setting %d event years on %d ruptures',
num_events, self.rupser.nruptures)
with self.monitor('setting event years', measuremem=True,
autoflush=True):
set_random_years(self.datastore, 'events',
self.oqparam.ses_seed,
int(self.oqparam.investigation_time))
def post_execute(self, result):
"""
Save the SES collection
"""
oq = self.oqparam
if 'ucerf' in oq.calculation_mode:
self.rupser.close()
self.csm.info.update_eff_ruptures(self.csm.get_num_ruptures())
self.setting_events()
N = len(self.sitecol.complete)
L = len(oq.imtls.array)
if result and oq.hazard_curves_from_gmfs:
rlzs = self.csm_info.get_rlzs_assoc().realizations
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
if len(hstats):
logging.info('Computing statistical hazard curves')
for statname, stat in hstats:
pmap = compute_pmap_stats(result.values(), [stat], weights)
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves/' + statname] = arr
if oq.poes:
P = len(oq.poes)
I = len(oq.imtls)
self.datastore.create_dset(
'hmaps/' + statname, F32, (N, P * I))
self.datastore.set_attrs(
'hmaps/' + statname, nbytes=N * P * I * 4)
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
ds = self.datastore['hmaps/' + statname]
for sid in hmap:
ds[sid] = hmap[sid].array[:, 0]
if self.datastore.parent:
self.datastore.parent.open('r')
if 'gmf_data' in self.datastore:
self.save_gmf_bytes()
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warn('Relative difference with the classical '
'mean curves: %d%% at site index %d',
rdiff * 100, index)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
accept_precalc = ['event_based', 'ebrisk', 'event_based_risk']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
if not self.datastore.parent:
self.rupser = calc.RuptureSerializer(self.datastore)
self.srcfilter = self.src_filter(self.datastore.tempname)
def init_logic_tree(self, full_lt):
self.trt_by_grp = full_lt.trt_by_grp
self.rlzs_by_gsim_grp = full_lt.get_rlzs_by_gsim_grp()
self.samples_by_grp = full_lt.get_samples_by_grp()
self.num_rlzs_by_grp = {
grp_id:
sum(len(rlzs) for rlzs in self.rlzs_by_gsim_grp[grp_id].values())
for grp_id in self.rlzs_by_gsim_grp
}
def acc0(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.L = len(self.oqparam.imtls.array)
zd = {r: ProbabilityMap(self.L) for r in range(self.R)}
return zd
def build_events_from_sources(self):
"""
Prefilter the composite source model and store the source_info
"""
gsims_by_trt = self.csm.full_lt.get_gsims_by_trt()
logging.info('Building ruptures')
maxweight = sum(sg.weight for sg in self.csm.src_groups) / (
self.oqparam.concurrent_tasks or 1)
eff_ruptures = AccumDict(accum=0) # trt => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(3, F32)) # nr, ns, dt
allargs = []
if self.oqparam.is_ucerf():
# manage the filtering in a special way
for sg in self.csm.src_groups:
for src in sg:
src.src_filter = self.srcfilter
srcfilter = nofilter # otherwise it would be ultra-slow
else:
srcfilter = self.srcfilter
for sg in self.csm.src_groups:
if not sg.sources:
continue
logging.info('Sending %s', sg)
par = self.param.copy()
par['gsims'] = gsims_by_trt[sg.trt]
for src_group in sg.split(maxweight):
allargs.append((src_group, srcfilter, par))
smap = parallel.Starmap(sample_ruptures,
allargs,
h5=self.datastore.hdf5)
mon = self.monitor('saving ruptures')
for dic in smap:
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
if dic['rup_array']:
with mon:
self.rupser.save(dic['rup_array'])
self.rupser.close()
if not self.rupser.nruptures:
raise RuntimeError('No ruptures were generated, perhaps the '
'investigation time is too short')
# logic tree reduction, must be called before storing the events
self.store_rlz_info(eff_ruptures)
self.init_logic_tree(self.csm.full_lt)
with self.monitor('store source_info'):
self.store_source_info(calc_times)
logging.info('Reordering the ruptures and storing the events')
sorted_ruptures = self.datastore.getitem('ruptures')[()]
# order the ruptures by rup_id
sorted_ruptures.sort(order='serial')
nr = len(sorted_ruptures)
assert len(numpy.unique(sorted_ruptures['serial'])) == nr # sanity
self.datastore['ruptures'] = sorted_ruptures
self.datastore['ruptures']['id'] = numpy.arange(nr)
with self.monitor('saving events'):
self.save_events(sorted_ruptures)
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
with sav_mon:
data = result.pop('gmfdata')
if len(data):
times = result.pop('times')
rupids = list(times['rup_id'])
self.datastore['gmf_data/time_by_rup'][rupids] = times
hdf5.extend(self.datastore['gmf_data/data'], data)
sig_eps = result.pop('sig_eps')
hdf5.extend(self.datastore['gmf_data/sigma_epsilon'], sig_eps)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError('The gmf_data table has more than %d rows' %
TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
self.datastore.flush()
return acc
def save_events(self, rup_array):
"""
:param rup_array: an array of ruptures with fields grp_id
:returns: a list of RuptureGetters
"""
# this is very fast compared to saving the ruptures
eids = rupture.get_eids(rup_array, self.samples_by_grp,
self.num_rlzs_by_grp)
self.check_overflow() # check the number of events
events = numpy.zeros(len(eids), rupture.events_dt)
# when computing the events all ruptures must be considered,
# including the ones far away that will be discarded later on
rgetters = gen_rgetters(self.datastore)
# build the associations eid -> rlz sequentially or in parallel
# this is very fast: I saw 30 million events associated in 1 minute!
logging.info('Building assocs event_id -> rlz_id for {:_d} events'
' and {:_d} ruptures'.format(len(events), len(rup_array)))
if len(events) < 1E5:
it = map(RuptureGetter.get_eid_rlz, rgetters)
else:
it = parallel.Starmap(RuptureGetter.get_eid_rlz,
((rgetter, ) for rgetter in rgetters),
progress=logging.debug,
h5=self.datastore.hdf5)
i = 0
for eid_rlz in it:
for er in eid_rlz:
events[i] = er
i += 1
if i >= TWO32:
raise ValueError('There are more than %d events!' % i)
events.sort(order='rup_id') # fast too
# sanity check
n_unique_events = len(numpy.unique(events[['id', 'rup_id']]))
assert n_unique_events == len(events), (n_unique_events, len(events))
events['id'] = numpy.arange(len(events))
# set event year and event ses starting from 1
itime = int(self.oqparam.investigation_time)
nses = self.oqparam.ses_per_logic_tree_path
extra = numpy.zeros(len(events), [('year', U16), ('ses_id', U16)])
numpy.random.seed(self.oqparam.ses_seed)
extra['year'] = numpy.random.choice(itime, len(events)) + 1
extra['ses_id'] = numpy.random.choice(nses, len(events)) + 1
self.datastore['events'] = util.compose_arrays(events, extra)
eindices = get_indices(events['rup_id'])
arr = numpy.array(list(eindices.values()))[:, 0, :]
self.datastore['ruptures']['e0'] = arr[:, 0]
self.datastore['ruptures']['e1'] = arr[:, 1]
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). There also a limit of max_potential_gmfs on
the number of sites times the number of events, to avoid producing too
many GMFs. In that case split the calculation or be smarter.
"""
oq = self.oqparam
max_ = dict(sites=TWO32, events=TWO32, imts=2**8)
num_ = dict(events=self.E, imts=len(self.oqparam.imtls))
n = len(getattr(self, 'sitecol', ()) or ())
num_['sites'] = n
if oq.calculation_mode == 'event_based' and oq.ground_motion_fields:
if n > oq.max_sites_per_gmf:
raise ValueError(
'You cannot compute the GMFs for %d > %d sites' %
(n, oq.max_sites_per_gmf))
elif n * self.E > oq.max_potential_gmfs:
raise ValueError(
'A GMF calculation with %d sites and %d events is '
'impossibly large' % (n, self.E))
for var in num_:
if num_[var] > max_[var]:
raise ValueError(
'The %s calculator is restricted to %d %s, got %d' %
(oq.calculation_mode, max_[var], var, num_[var]))
def set_param(self, **kw):
oq = self.oqparam
# set the minimum_intensity
if hasattr(self, 'crmodel') and not oq.minimum_intensity:
# infer it from the risk models if not directly set in job.ini
oq.minimum_intensity = self.crmodel.min_iml
min_iml = oq.min_iml
if oq.ground_motion_fields and min_iml.sum() == 0:
logging.warning('The GMFs are not filtered: '
'you may want to set a minimum_intensity')
else:
logging.info('minimum_intensity=%s', oq.minimum_intensity)
self.param.update(oqparam=oq,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
imtls=oq.imtls,
filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path,
**kw)
def execute(self):
oq = self.oqparam
self.set_param()
self.offset = 0
self.indices = AccumDict(accum=[]) # sid, idx -> indices
if oq.hazard_calculation_id: # from ruptures
self.datastore.parent = util.read(oq.hazard_calculation_id)
self.init_logic_tree(self.datastore.parent['full_lt'])
else: # from sources
self.build_events_from_sources()
if (oq.ground_motion_fields is False
and oq.hazard_curves_from_gmfs is False):
return {}
if not oq.imtls:
raise InvalidFile('There are no intensity measure types in %s' %
oq.inputs['job_ini'])
N = len(self.sitecol.complete)
if oq.ground_motion_fields:
nrups = len(self.datastore['ruptures'])
self.datastore.create_dset('gmf_data/data', oq.gmf_data_dt())
self.datastore.create_dset('gmf_data/sigma_epsilon',
sig_eps_dt(oq.imtls))
self.datastore.create_dset('gmf_data/indices',
hdf5.vuint32,
shape=(N, 2),
fillvalue=None)
self.datastore.create_dset('gmf_data/events_by_sid', U32, (N, ))
self.datastore.create_dset('gmf_data/time_by_rup',
time_dt, (nrups, ),
fillvalue=None)
if oq.hazard_curves_from_gmfs:
self.param['rlz_by_event'] = self.datastore['events']['rlz_id']
# compute_gmfs in parallel
self.datastore.swmr_on()
logging.info('Reading %d ruptures', len(self.datastore['ruptures']))
iterargs = ((rgetter, self.srcfilter, self.param)
for rgetter in gen_rupture_getters(
self.datastore, self.srcfilter, oq.concurrent_tasks))
acc = parallel.Starmap(self.core_task.__func__,
iterargs,
h5=self.datastore.hdf5,
num_cores=oq.num_cores).reduce(
self.agg_dicts, self.acc0())
if self.indices:
dset = self.datastore['gmf_data/indices']
num_evs = self.datastore['gmf_data/events_by_sid']
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices', measuremem=True):
self.datastore['gmf_data/imts'] = ' '.join(oq.imtls)
for sid in self.sitecol.complete.sids:
start = numpy.array(self.indices[sid, 0])
stop = numpy.array(self.indices[sid, 1])
dset[sid, 0] = start
dset[sid, 1] = stop
num_evs[sid] = (stop - start).sum()
avg_events_by_sid = num_evs[()].sum() / N
logging.info('Found ~%d GMVs per site', avg_events_by_sid)
elif oq.ground_motion_fields:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def post_execute(self, result):
oq = self.oqparam
if not oq.ground_motion_fields and not oq.hazard_curves_from_gmfs:
return
N = len(self.sitecol.complete)
M = len(oq.imtls)
L = len(oq.imtls.array)
L1 = L // M
if result and oq.hazard_curves_from_gmfs:
rlzs = self.datastore['full_lt'].get_realizations()
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
S = len(hstats)
pmaps = list(result.values())
R = len(weights)
if len(pmaps) != R:
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
if oq.individual_curves:
logging.info('Saving individual hazard curves')
self.datastore.create_dset('hcurves-rlzs', F32, (N, R, M, L1))
self.datastore.set_shape_attrs('hcurves-rlzs',
site_id=N,
rlz_id=R,
imt=list(oq.imtls),
lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset('hmaps-rlzs', F32,
(N, R, M, P))
self.datastore.set_shape_attrs('hmaps-rlzs',
site_id=N,
rlz_id=R,
imt=list(oq.imtls),
poe=oq.poes)
for r, pmap in enumerate(pmaps):
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-rlzs'][:, r] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, r] = hmap[sid].array
if S:
logging.info('Computing statistical hazard curves')
self.datastore.create_dset('hcurves-stats', F32, (N, S, M, L1))
self.datastore.set_shape_attrs('hcurves-stats',
site_id=N,
stat=list(hstats),
imt=list(oq.imtls),
lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset('hmaps-stats', F32,
(N, S, M, P))
self.datastore.set_shape_attrs('hmaps-stats',
site_id=N,
stat=list(hstats),
imt=list(oq.imtls),
poes=oq.poes)
for s, stat in enumerate(hstats):
pmap = compute_pmap_stats(pmaps, [hstats[stat]], weights,
oq.imtls)
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-stats'][:, s] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, s] = hmap[sid].array
if self.datastore.parent:
self.datastore.parent.open('r')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
job_id = logs.init('job')
oq.calculation_mode = 'classical'
self.cl = ClassicalCalculator(oq, job_id)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run()
engine.expose_outputs(self.datastore)
for imt in oq.imtls:
cl_mean_curves = get_mean_curves(self.datastore, imt)
eb_mean_curves = get_mean_curves(self.datastore, imt)
self.rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warning(
'Relative difference with the classical '
'mean curves: %d%% at site index %d, imt=%s',
self.rdiff * 100, index, imt)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def combine_pmaps_and_save_gmfs(self, acc, results):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param results: dictionaries rlzi, imt -> [gmf_array, curves_by_imt]
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
hdf5path = self.datastore.hdf5path
for res in results:
self.gmdata += res['gmdata']
data = res['gmfdata']
with sav_mon:
hdf5.extend3(hdf5path, 'gmf_data/data', data)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in res['indices']:
self.indices[sid].append(
(start + self.offset, stop + self.offset))
self.offset += len(data)
slicedic = self.oqparam.imtls.slicedic
with agg_mon:
for key, poes in res['hcurves'].items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[slicedic[imt], 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
if 'ruptures' in res:
vars(EventBasedRuptureCalculator)['save_ruptures'](
self, res['ruptures'])
return acc
def gen_args(self):
"""
:yields: the arguments for compute_gmfs_and_curves
"""
oq = self.oqparam
sitecol = self.sitecol.complete
monitor = self.monitor(self.core_task.__name__)
imts = list(oq.imtls)
min_iml = self.get_min_iml(oq)
correl_model = oq.get_correl_model()
try:
csm_info = self.csm.info
except AttributeError: # no csm
csm_info = self.datastore['csm_info']
samples_by_grp = csm_info.get_samples_by_grp()
rlzs_by_gsim = {
grp_id: self.rlzs_assoc.get_rlzs_by_gsim(grp_id)
for grp_id in samples_by_grp
}
if self.precalc:
num_ruptures = sum(len(rs) for rs in self.precalc.result.values())
block_size = math.ceil(num_ruptures / (oq.concurrent_tasks or 1))
for grp_id, ruptures in self.precalc.result.items():
if not ruptures:
continue
for block in block_splitter(ruptures, block_size):
getter = GmfGetter(rlzs_by_gsim[grp_id], block, sitecol,
imts, min_iml, oq.maximum_distance,
oq.truncation_level, correl_model,
oq.filter_distance,
samples_by_grp[grp_id])
yield [getter], oq, monitor
return
U = len(self.datastore['ruptures'])
logging.info('Found %d ruptures', U)
parent = self.can_read_parent() or self.datastore
for slc in split_in_slices(U, oq.concurrent_tasks or 1):
getters = []
for grp_id in rlzs_by_gsim:
ruptures = RuptureGetter(parent, slc, grp_id)
if parent is self.datastore: # not accessible parent
ruptures = list(ruptures)
if not ruptures:
continue
getters.append(
GmfGetter(rlzs_by_gsim[grp_id], ruptures, sitecol, imts,
min_iml, oq.maximum_distance,
oq.truncation_level, correl_model,
oq.filter_distance, samples_by_grp[grp_id]))
yield getters, oq, monitor
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
calc.check_overflow(self)
self.csm_info = self.datastore['csm_info']
self.sm_id = {
tuple(sm.path): sm.ordinal
for sm in self.csm_info.source_models
}
L = len(oq.imtls.array)
R = self.datastore['csm_info'].get_num_rlzs()
self.gmdata = {}
self.offset = 0
self.indices = collections.defaultdict(list) # sid -> indices
ires = parallel.Starmap(self.core_task.__func__,
self.gen_args()).submit_all()
if self.precalc and self.precalc.result:
# remove the ruptures in memory to save memory
self.precalc.result.clear()
acc = ires.reduce(self.combine_pmaps_and_save_gmfs,
{r: ProbabilityMap(L)
for r in range(R)})
base.save_gmdata(self, R)
if self.indices:
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices',
measuremem=True,
autoflush=True):
self.datastore.save_vlen('gmf_data/indices', [
numpy.array(self.indices[sid], indices_dt)
for sid in self.sitecol.complete.sids
])
else:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def save_gmf_bytes(self):
"""Save the attribute nbytes in the gmf_data datasets"""
ds = self.datastore
for sm_id in ds['gmf_data']:
ds.set_nbytes('gmf_data/' + sm_id)
ds.set_nbytes('gmf_data')
def post_execute(self, result):
"""
:param result:
a dictionary (src_group_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# save individual curves
for i in sorted(result):
key = 'hcurves/rlz-%03d' % i
if result[i]:
self.datastore[key] = result[i]
else:
self.datastore[key] = ProbabilityMap(oq.imtls.array.size)
logging.info('Zero curves for %s', key)
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
hstats = self.oqparam.hazard_stats()
if len(hstats) and len(rlzs) > 1:
logging.info('Computing statistical hazard curves')
for kind, stat in hstats:
pmap = compute_pmap_stats(result.values(), [stat], weights)
self.datastore['hcurves/' + kind] = pmap
if self.datastore.parent:
self.datastore.parent.open()
if 'gmf_data' in self.datastore:
self.save_gmf_bytes()
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
for imt in eb_mean_curves.dtype.names:
rdiff, index = util.max_rel_diff_index(cl_mean_curves[imt],
eb_mean_curves[imt])
logging.warn(
'Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d', imt,
rdiff * 100, index)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
accept_precalc = ['event_based', 'ebrisk', 'event_based_risk']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
if hasattr(self.oqparam, 'maximum_distance'):
self.srcfilter = self.src_filter(self.datastore.tempname)
else:
self.srcfilter = nofilter
if not self.datastore.parent:
self.datastore.create_dset('ruptures', rupture_dt)
self.datastore.create_dset('rupgeoms', hdf5.vfloat32)
def acc0(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.L = len(self.oqparam.imtls.array)
zd = {r: ProbabilityMap(self.L) for r in range(self.R)}
return zd
def build_events_from_sources(self):
"""
Prefilter the composite source model and store the source_info
"""
gsims_by_trt = self.csm.full_lt.get_gsims_by_trt()
logging.info('Building ruptures')
maxweight = sum(sg.weight for sg in self.csm.src_groups) / (
self.oqparam.concurrent_tasks or 1)
eff_ruptures = AccumDict(accum=0) # trt => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(3, F32)) # nr, ns, dt
allargs = []
if self.oqparam.is_ucerf():
# manage the filtering in a special way
for sg in self.csm.src_groups:
for src in sg:
src.src_filter = self.srcfilter
srcfilter = nofilter # otherwise it would be ultra-slow
else:
srcfilter = self.srcfilter
for sg in self.csm.src_groups:
if not sg.sources:
continue
logging.info('Sending %s', sg)
par = self.param.copy()
par['gsims'] = gsims_by_trt[sg.trt]
for src_group in sg.split(maxweight):
allargs.append((src_group, srcfilter, par))
smap = parallel.Starmap(
sample_ruptures, allargs, h5=self.datastore.hdf5)
mon = self.monitor('saving ruptures')
self.nruptures = 0
for dic in smap:
rup_array = dic['rup_array']
if len(rup_array) == 0:
continue
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
with mon:
n = len(rup_array)
rup_array['id'] = numpy.arange(
self.nruptures, self.nruptures + n)
self.nruptures += n
hdf5.extend(self.datastore['ruptures'], rup_array)
hdf5.extend(self.datastore['rupgeoms'], rup_array.geom)
if len(self.datastore['ruptures']) == 0:
if os.environ.get('OQ_SAMPLE_SOURCES'):
raise SystemExit(0) # success even with no ruptures
raise RuntimeError('No ruptures were generated, perhaps the '
'investigation time is too short')
# must be called before storing the events
self.store_rlz_info(eff_ruptures) # store full_lt
with self.monitor('store source_info'):
self.store_source_info(calc_times)
imp = calc.RuptureImporter(self.datastore)
with self.monitor('saving ruptures and events'):
imp.import_rups(self.datastore.getitem('ruptures')[()])
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
with sav_mon:
data = result.pop('gmfdata')
if len(data):
times = result.pop('times')
rupids = list(times['rup_id'])
self.datastore['gmf_data/time_by_rup'][rupids] = times
hdf5.extend(self.datastore['gmf_data/data'], data)
sig_eps = result.pop('sig_eps')
hdf5.extend(self.datastore['gmf_data/sigma_epsilon'], sig_eps)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
self.datastore.flush()
return acc
def set_param(self, **kw):
oq = self.oqparam
# set the minimum_intensity
if hasattr(self, 'crmodel') and not oq.minimum_intensity:
# infer it from the risk models if not directly set in job.ini
oq.minimum_intensity = self.crmodel.min_iml
min_iml = oq.min_iml
if oq.ground_motion_fields and min_iml.sum() == 0:
logging.warning('The GMFs are not filtered: '
'you may want to set a minimum_intensity')
else:
logging.info('minimum_intensity=%s', oq.minimum_intensity)
self.param.update(
oqparam=oq,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
imtls=oq.imtls, filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path, **kw)
def _read_scenario_ruptures(self):
oq = self.oqparam
if oq.inputs['rupture_model'].endswith(('.xml', '.toml', '.txt')):
self.gsims = readinput.get_gsims(oq)
self.cmaker = ContextMaker(
'*', self.gsims,
{'maximum_distance': oq.maximum_distance,
'filter_distance': oq.filter_distance})
n_occ = numpy.array([oq.number_of_ground_motion_fields])
rup = readinput.get_rupture(oq)
ebr = EBRupture(rup, 0, 0, n_occ)
ebr.e0 = 0
rup_array = get_rup_array([ebr], self.srcfilter).array
mesh = surface_to_array(rup.surface).transpose(1, 2, 0).flatten()
hdf5.extend(self.datastore['rupgeoms'],
numpy.array([mesh], object))
elif oq.inputs['rupture_model'].endswith('.csv'):
aw = readinput.get_ruptures(oq.inputs['rupture_model'])
rup_array = aw.array
hdf5.extend(self.datastore['rupgeoms'], aw.geom)
if len(rup_array) == 0:
raise RuntimeError(
'There are no sites within the maximum_distance'
' of %s km from the rupture' % oq.maximum_distance(
rup.tectonic_region_type, rup.mag))
gsim_lt = readinput.get_gsim_lt(self.oqparam)
# check the number of branchsets
branchsets = len(gsim_lt._ltnode)
if len(rup_array) == 1 and branchsets > 1:
raise InvalidFile(
'%s for a scenario calculation must contain a single '
'branchset, found %d!' % (oq.inputs['job_ini'], branchsets))
fake = logictree.FullLogicTree.fake(gsim_lt)
self.realizations = fake.get_realizations()
self.datastore['full_lt'] = fake
self.store_rlz_info({}) # store weights
self.save_params()
calc.RuptureImporter(self.datastore).import_rups(rup_array)
def execute(self):
oq = self.oqparam
self.set_param()
self.offset = 0
self.indices = AccumDict(accum=[]) # sid, idx -> indices
if oq.hazard_calculation_id: # from ruptures
self.datastore.parent = util.read(oq.hazard_calculation_id)
elif hasattr(self, 'csm'): # from sources
self.build_events_from_sources()
if (oq.ground_motion_fields is False and
oq.hazard_curves_from_gmfs is False):
return {}
elif 'rupture_model' not in oq.inputs:
logging.warning(
'There is no rupture_model, the calculator will just '
'import data without performing any calculation')
return {}
else: # scenario
self._read_scenario_ruptures()
if (oq.ground_motion_fields is False and
oq.hazard_curves_from_gmfs is False):
return {}
if not oq.imtls:
raise InvalidFile('There are no intensity measure types in %s' %
oq.inputs['job_ini'])
N = len(self.sitecol.complete)
if oq.ground_motion_fields:
nrups = len(self.datastore['ruptures'])
self.datastore.create_dset('gmf_data/data', oq.gmf_data_dt())
self.datastore.create_dset('gmf_data/sigma_epsilon',
sig_eps_dt(oq.imtls))
self.datastore.create_dset(
'gmf_data/indices', hdf5.vuint32, shape=(N, 2), fillvalue=None)
self.datastore.create_dset('gmf_data/events_by_sid', U32, (N,))
self.datastore.create_dset('gmf_data/time_by_rup',
time_dt, (nrups,), fillvalue=None)
if oq.hazard_curves_from_gmfs:
self.param['rlz_by_event'] = self.datastore['events']['rlz_id']
# compute_gmfs in parallel
nr = len(self.datastore['ruptures'])
self.datastore.swmr_on()
logging.info('Reading %d ruptures', nr)
iterargs = ((rgetter, self.srcfilter, self.param)
for rgetter in gen_rupture_getters(
self.datastore, self.srcfilter,
oq.concurrent_tasks))
acc = parallel.Starmap(
self.core_task.__func__, iterargs, h5=self.datastore.hdf5,
num_cores=oq.num_cores
).reduce(self.agg_dicts, self.acc0())
if self.indices:
dset = self.datastore['gmf_data/indices']
num_evs = self.datastore['gmf_data/events_by_sid']
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices', measuremem=True):
self.datastore['gmf_data/imts'] = ' '.join(oq.imtls)
for sid in self.sitecol.complete.sids:
start = numpy.array(self.indices[sid, 0])
stop = numpy.array(self.indices[sid, 1])
dset[sid, 0] = start
dset[sid, 1] = stop
num_evs[sid] = (stop - start).sum()
avg_events_by_sid = num_evs[()].sum() / N
logging.info('Found ~%d GMVs per site', avg_events_by_sid)
elif oq.ground_motion_fields:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def post_execute(self, result):
oq = self.oqparam
if not oq.ground_motion_fields and not oq.hazard_curves_from_gmfs:
return
N = len(self.sitecol.complete)
M = len(oq.imtls) # 0 in scenario
L = len(oq.imtls.array)
L1 = L // (M or 1)
if result and oq.hazard_curves_from_gmfs:
rlzs = self.datastore['full_lt'].get_realizations()
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
S = len(hstats)
pmaps = list(result.values())
R = len(weights)
if len(pmaps) != R:
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
if oq.individual_curves:
logging.info('Saving individual hazard curves')
self.datastore.create_dset('hcurves-rlzs', F32, (N, R, M, L1))
self.datastore.set_shape_attrs(
'hcurves-rlzs', site_id=N, rlz_id=R,
imt=list(oq.imtls), lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-rlzs', F32, (N, R, M, P))
self.datastore.set_shape_attrs(
'hmaps-rlzs', site_id=N, rlz_id=R,
imt=list(oq.imtls), poe=oq.poes)
for r, pmap in enumerate(pmaps):
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-rlzs'][:, r] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, r] = hmap[sid].array
if S:
logging.info('Computing statistical hazard curves')
self.datastore.create_dset('hcurves-stats', F32, (N, S, M, L1))
self.datastore.set_shape_attrs(
'hcurves-stats', site_id=N, stat=list(hstats),
imt=list(oq.imtls), lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-stats', F32, (N, S, M, P))
self.datastore.set_shape_attrs(
'hmaps-stats', site_id=N, stat=list(hstats),
imt=list(oq.imtls), poes=oq.poes)
for s, stat in enumerate(hstats):
pmap = compute_pmap_stats(
pmaps, [hstats[stat]], weights, oq.imtls)
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-stats'][:, s] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, s] = hmap[sid].array
if self.datastore.parent:
self.datastore.parent.open('r')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
job_id = logs.init('job')
oq.calculation_mode = 'classical'
self.cl = ClassicalCalculator(oq, job_id)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run()
engine.expose_outputs(self.datastore)
for imt in oq.imtls:
cl_mean_curves = get_mean_curves(self.datastore, imt)
eb_mean_curves = get_mean_curves(self.datastore, imt)
self.rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warning('Relative difference with the classical '
'mean curves: %d%% at site index %d, imt=%s',
self.rdiff * 100, index, imt)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
accept_precalc = ['event_based', 'ebrisk', 'event_based_risk']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
if hasattr(self.oqparam, 'maximum_distance'):
self.srcfilter = self.src_filter()
else:
self.srcfilter = nofilter
if not self.datastore.parent:
self.datastore.create_dset('ruptures', rupture_dt)
self.datastore.create_dset('rupgeoms', hdf5.vfloat32)
def acc0(self):
"""
Initial accumulator, a dictionary rlz -> ProbabilityMap
"""
self.L = self.oqparam.imtls.size
return {r: ProbabilityMap(self.L) for r in range(self.R)}
def build_events_from_sources(self):
"""
Prefilter the composite source model and store the source_info
"""
gsims_by_trt = self.csm.full_lt.get_gsims_by_trt()
sources = self.csm.get_sources()
# weighting the heavy sources
nrups = parallel.Starmap(
count_ruptures, [(src,) for src in sources if src.code in b'AMC'],
progress=logging.debug
).reduce()
for src in sources:
src.nsites = 1 # avoid 0 weight
try:
src.num_ruptures = nrups[src.source_id]
except KeyError:
src.num_ruptures = src.count_ruptures()
maxweight = sum(sg.weight for sg in self.csm.src_groups) / (
self.oqparam.concurrent_tasks or 1)
eff_ruptures = AccumDict(accum=0) # trt => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(3, F32)) # nr, ns, dt
allargs = []
if self.oqparam.is_ucerf():
# manage the filtering in a special way
for sg in self.csm.src_groups:
for src in sg:
src.src_filter = self.srcfilter
srcfilter = nofilter # otherwise it would be ultra-slow
else:
srcfilter = self.srcfilter
logging.info('Building ruptures')
for sg in self.csm.src_groups:
if not sg.sources:
continue
logging.info('Sending %s', sg)
par = self.param.copy()
par['gsims'] = gsims_by_trt[sg.trt]
for src_group in sg.split(maxweight):
allargs.append((src_group, srcfilter, par))
smap = parallel.Starmap(
sample_ruptures, allargs, h5=self.datastore.hdf5)
mon = self.monitor('saving ruptures')
self.nruptures = 0
for dic in smap:
# NB: dic should be a dictionary, but when the calculation dies
# for an OOM it can become None, thus giving a very confusing error
if dic is None:
raise MemoryError('You ran out of memory!')
rup_array = dic['rup_array']
if len(rup_array) == 0:
continue
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
with mon:
n = len(rup_array)
rup_array['id'] = numpy.arange(
self.nruptures, self.nruptures + n)
self.nruptures += n
hdf5.extend(self.datastore['ruptures'], rup_array)
hdf5.extend(self.datastore['rupgeoms'], rup_array.geom)
if len(self.datastore['ruptures']) == 0:
raise RuntimeError('No ruptures were generated, perhaps the '
'investigation time is too short')
# must be called before storing the events
self.store_rlz_info(eff_ruptures) # store full_lt
self.store_source_info(calc_times)
imp = calc.RuptureImporter(self.datastore)
with self.monitor('saving ruptures and events'):
imp.import_rups_events(
self.datastore.getitem('ruptures')[()], get_rupture_getters)
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
primary = self.oqparam.get_primary_imtls()
sec_imts = self.oqparam.get_sec_imts()
with sav_mon:
df = result.pop('gmfdata')
if len(df):
dset = self.datastore['gmf_data/sid']
times = result.pop('times')
[task_no] = numpy.unique(times['task_no'])
rupids = list(times['rup_id'])
self.datastore['gmf_data/time_by_rup'][rupids] = times
hdf5.extend(dset, df.sid.to_numpy())
hdf5.extend(self.datastore['gmf_data/eid'], df.eid.to_numpy())
for m in range(len(primary)):
hdf5.extend(self.datastore[f'gmf_data/gmv_{m}'],
df[f'gmv_{m}'])
for sec_imt in sec_imts:
hdf5.extend(self.datastore[f'gmf_data/{sec_imt}'],
df[sec_imt])
sig_eps = result.pop('sig_eps')
hdf5.extend(self.datastore['gmf_data/sigma_epsilon'], sig_eps)
self.offset += len(df)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
self.datastore.flush()
return acc
def set_param(self, **kw):
oq = self.oqparam
if oq.ground_motion_fields and oq.min_iml.sum() == 0:
logging.warning('The GMFs are not filtered: '
'you may want to set a minimum_intensity')
else:
logging.info('minimum_intensity=%s', oq.minimum_intensity)
self.param.update(
oqparam=oq,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
imtls=oq.imtls,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path, **kw)
def _read_scenario_ruptures(self):
oq = self.oqparam
gsim_lt = readinput.get_gsim_lt(self.oqparam)
G = gsim_lt.get_num_paths()
if oq.calculation_mode.startswith('scenario'):
ngmfs = oq.number_of_ground_motion_fields
if oq.inputs['rupture_model'].endswith('.xml'):
self.gsims = [gsim_rlz.value[0] for gsim_rlz in gsim_lt]
self.cmaker = ContextMaker(
'*', self.gsims, {'maximum_distance': oq.maximum_distance,
'imtls': oq.imtls})
rup = readinput.get_rupture(oq)
if self.N > oq.max_sites_disagg: # many sites, split rupture
ebrs = [EBRupture(copyobj(rup, rup_id=rup.rup_id + i),
0, 0, G, e0=i * G) for i in range(ngmfs)]
else: # keep a single rupture with a big occupation number
ebrs = [EBRupture(rup, 0, 0, G * ngmfs, rup.rup_id)]
aw = get_rup_array(ebrs, self.srcfilter)
if len(aw) == 0:
raise RuntimeError(
'The rupture is too far from the sites! Please check the '
'maximum_distance and the position of the rupture')
elif oq.inputs['rupture_model'].endswith('.csv'):
aw = readinput.get_ruptures(oq.inputs['rupture_model'])
num_gsims = numpy.array(
[len(gsim_lt.values[trt]) for trt in gsim_lt.values], U32)
if oq.calculation_mode.startswith('scenario'):
# rescale n_occ
aw['n_occ'] *= ngmfs * num_gsims[aw['trt_smr']]
rup_array = aw.array
hdf5.extend(self.datastore['rupgeoms'], aw.geom)
if len(rup_array) == 0:
raise RuntimeError(
'There are no sites within the maximum_distance'
' of %s km from the rupture' % oq.maximum_distance(
rup.tectonic_region_type, rup.mag))
# check the number of branchsets
branchsets = len(gsim_lt._ltnode)
if len(rup_array) == 1 and branchsets > 1:
raise InvalidFile(
'%s for a scenario calculation must contain a single '
'branchset, found %d!' % (oq.inputs['job_ini'], branchsets))
fake = logictree.FullLogicTree.fake(gsim_lt)
self.realizations = fake.get_realizations()
self.datastore['full_lt'] = fake
self.store_rlz_info({}) # store weights
self.save_params()
imp = calc.RuptureImporter(self.datastore)
imp.import_rups_events(rup_array, get_rupture_getters)
def execute(self):
oq = self.oqparam
dstore = self.datastore
self.set_param()
self.offset = 0
if oq.hazard_calculation_id: # from ruptures
dstore.parent = datastore.read(oq.hazard_calculation_id)
elif hasattr(self, 'csm'): # from sources
self.build_events_from_sources()
if (oq.ground_motion_fields is False and
oq.hazard_curves_from_gmfs is False):
return {}
elif 'rupture_model' not in oq.inputs:
logging.warning(
'There is no rupture_model, the calculator will just '
'import data without performing any calculation')
fake = logictree.FullLogicTree.fake()
dstore['full_lt'] = fake # needed to expose the outputs
dstore['weights'] = [1.]
return {}
else: # scenario
self._read_scenario_ruptures()
if (oq.ground_motion_fields is False and
oq.hazard_curves_from_gmfs is False):
return {}
if oq.ground_motion_fields:
imts = oq.get_primary_imtls()
nrups = len(dstore['ruptures'])
base.create_gmf_data(dstore, imts, oq.get_sec_imts())
dstore.create_dset('gmf_data/sigma_epsilon', sig_eps_dt(oq.imtls))
dstore.create_dset('gmf_data/time_by_rup',
time_dt, (nrups,), fillvalue=None)
# compute_gmfs in parallel
nr = len(dstore['ruptures'])
logging.info('Reading {:_d} ruptures'.format(nr))
rgetters = get_rupture_getters(dstore, oq.concurrent_tasks * 1.25,
srcfilter=self.srcfilter)
allargs = [(rgetter, self.param) for rgetter in rgetters]
dstore.swmr_on()
smap = parallel.Starmap(
self.core_task.__func__, allargs, h5=dstore.hdf5)
smap.monitor.save('srcfilter', self.srcfilter)
acc = smap.reduce(self.agg_dicts, self.acc0())
if 'gmf_data' not in dstore:
return acc
if oq.ground_motion_fields:
with self.monitor('saving avg_gmf', measuremem=True):
self.save_avg_gmf()
return acc
def save_avg_gmf(self):
"""
Compute and save avg_gmf, unless there are too many GMFs
"""
size = self.datastore.getsize('gmf_data')
logging.info(f'Stored {humansize(size)} of GMFs')
if size > 100 * 1024**2:
logging.warning(
'There are more than 100 MB of GMFs, not computing avg_gmf')
return numpy.unique(self.datastore['gmf_data/eid'][:])
rlzs = self.datastore['events']['rlz_id']
self.weights = self.datastore['weights'][:][rlzs]
gmf_df = self.datastore.read_df('gmf_data', 'sid')
for sec_imt in self.oqparam.get_sec_imts(): # ignore secondary perils
del gmf_df[sec_imt]
rel_events = gmf_df.eid.unique()
e = len(rel_events)
if e == 0:
raise RuntimeError(
'No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
elif e < len(self.datastore['events']):
self.datastore['relevant_events'] = rel_events
logging.info('Stored {:_d} relevant event IDs'.format(e))
# really compute and store the avg_gmf
M = len(self.oqparam.min_iml)
avg_gmf = numpy.zeros((2, self.N, M), F32)
for sid, avgstd in compute_avg_gmf(
gmf_df, self.weights, self.oqparam.min_iml).items():
avg_gmf[:, sid] = avgstd
self.datastore['avg_gmf'] = avg_gmf
return rel_events
def post_execute(self, result):
oq = self.oqparam
if (not result or not oq.ground_motion_fields and not
oq.hazard_curves_from_gmfs):
return
N = len(self.sitecol.complete)
M = len(oq.imtls) # 0 in scenario
L = oq.imtls.size
L1 = L // (M or 1)
# check seed dependency unless the number of GMFs is huge
if ('gmf_data' in self.datastore and
self.datastore.getsize('gmf_data') < 1E9):
logging.info('Checking seed dependency')
err = views.view('gmf_error', self.datastore)
if err > .05:
logging.warning('Your results are expected to have a large '
'dependency from ses_seed')
if oq.hazard_curves_from_gmfs:
rlzs = self.datastore['full_lt'].get_realizations()
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
S = len(hstats)
pmaps = list(result.values())
R = len(weights)
if len(pmaps) != R:
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
if oq.individual_curves:
logging.info('Saving individual hazard curves')
self.datastore.create_dset('hcurves-rlzs', F32, (N, R, M, L1))
self.datastore.set_shape_descr(
'hcurves-rlzs', site_id=N, rlz_id=R,
imt=list(oq.imtls), lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-rlzs', F32, (N, R, M, P))
self.datastore.set_shape_descr(
'hmaps-rlzs', site_id=N, rlz_id=R,
imt=list(oq.imtls), poe=oq.poes)
for r, pmap in enumerate(pmaps):
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-rlzs'][:, r] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, r] = hmap[sid].array
if S:
logging.info('Computing statistical hazard curves')
self.datastore.create_dset('hcurves-stats', F32, (N, S, M, L1))
self.datastore.set_shape_descr(
'hcurves-stats', site_id=N, stat=list(hstats),
imt=list(oq.imtls), lvl=numpy.arange(L1))
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-stats', F32, (N, S, M, P))
self.datastore.set_shape_descr(
'hmaps-stats', site_id=N, stat=list(hstats),
imt=list(oq.imtls), poes=oq.poes)
for s, stat in enumerate(hstats):
pmap = compute_pmap_stats(
pmaps, [hstats[stat]], weights, oq.imtls)
arr = numpy.zeros((N, M, L1), F32)
for sid in pmap:
arr[sid] = pmap[sid].array.reshape(M, L1)
self.datastore['hcurves-stats'][:, s] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, s] = hmap[sid].array
if self.datastore.parent:
self.datastore.parent.open('r')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
oq.calculation_mode = 'classical'
with logs.init('job', vars(oq)) as log:
self.cl = ClassicalCalculator(oq, log.calc_id)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run()
engine.expose_outputs(self.cl.datastore)
for imt in oq.imtls:
cl_mean_curves = get_mean_curves(self.datastore, imt)
eb_mean_curves = get_mean_curves(self.datastore, imt)
self.rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warning(
'Relative difference with the classical '
'mean curves: %d%% at site index %d, imt=%s',
self.rdiff * 100, index, imt)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
accept_precalc = ['event_based', 'event_based_risk', 'ucerf_hazard']
build_ruptures = sample_ruptures
@cached_property
def csm_info(self):
"""
:returns: a cached CompositionInfo object
"""
try:
return self.csm.info
except AttributeError:
return self.datastore.parent['csm_info']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
self.rupser = calc.RuptureSerializer(self.datastore)
def init_logic_tree(self, csm_info):
self.trt_by_grp = csm_info.grp_by("trt")
self.rlzs_assoc = csm_info.get_rlzs_assoc()
self.rlzs_by_gsim_grp = csm_info.get_rlzs_by_gsim_grp()
self.samples_by_grp = csm_info.get_samples_by_grp()
self.num_rlzs_by_grp = {
grp_id:
sum(len(rlzs) for rlzs in self.rlzs_by_gsim_grp[grp_id].values())
for grp_id in self.rlzs_by_gsim_grp
}
def acc0(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.L = len(self.oqparam.imtls.array)
zd = {r: ProbabilityMap(self.L) for r in range(self.R)}
return zd
def build_events_from_sources(self):
"""
Prefilter the composite source model and store the source_info
"""
oq = self.oqparam
gsims_by_trt = self.csm.gsim_lt.values
logging.info('Building ruptures')
smap = parallel.Starmap(self.build_ruptures.__func__,
hdf5path=self.datastore.filename)
eff_ruptures = AccumDict(accum=0) # grp_id => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(2, F32))
ses_idx = 0
for sm_id, sm in enumerate(self.csm.source_models):
logging.info('Sending %s', sm)
for sg in sm.src_groups:
if not sg.sources:
continue
par = self.param.copy()
par['gsims'] = gsims_by_trt[sg.trt]
if sg.atomic: # do not split the group
smap.submit(sg, self.src_filter, par)
else: # traditional groups
for block in self.block_splitter(sg.sources, key=by_grp):
if 'ucerf' in oq.calculation_mode:
for i in range(oq.ses_per_logic_tree_path):
par['ses_seeds'] = [(ses_idx,
oq.ses_seed + i + 1)]
smap.submit(block, self.src_filter, par)
ses_idx += 1
else:
smap.submit(block, self.src_filter, par)
mon = self.monitor('saving ruptures')
for dic in smap:
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
if dic['rup_array']:
with mon:
self.rupser.save(dic['rup_array'])
self.rupser.close()
if not self.rupser.nruptures:
raise RuntimeError('No ruptures were generated, perhaps the '
'investigation time is too short')
# logic tree reduction, must be called before storing the events
self.store_rlz_info(eff_ruptures)
self.init_logic_tree(self.csm.info)
with self.monitor('store source_info', autoflush=True):
self.store_source_info(calc_times)
logging.info('Reordering the ruptures and storing the events')
attrs = self.datastore.getitem('ruptures').attrs
sorted_ruptures = self.datastore.getitem('ruptures')[()]
# order the ruptures by serial
sorted_ruptures.sort(order='serial')
ngroups = len(self.csm.info.trt_by_grp)
grp_indices = numpy.zeros((ngroups, 2), U32)
grp_ids = sorted_ruptures['grp_id']
for grp_id, [startstop] in get_indices(grp_ids).items():
grp_indices[grp_id] = startstop
self.datastore['ruptures'] = sorted_ruptures
self.datastore.set_attrs('ruptures', grp_indices=grp_indices, **attrs)
with self.monitor('saving events'):
self.save_events(sorted_ruptures)
def gen_rupture_getters(self):
"""
:returns: a list of RuptureGetters
"""
dstore = (self.datastore.parent
if self.datastore.parent else self.datastore)
hdf5cache = dstore.hdf5cache()
mode = 'r+' if os.path.exists(hdf5cache) else 'w'
with hdf5.File(hdf5cache, mode) as cache:
if 'ruptures' not in cache:
dstore.hdf5.copy('ruptures', cache)
if 'rupgeoms' not in cache:
dstore.hdf5.copy('rupgeoms', cache)
yield from gen_rupture_getters(
dstore,
concurrent_tasks=self.oqparam.concurrent_tasks or 1,
hdf5cache=hdf5cache)
if self.datastore.parent:
self.datastore.parent.close()
@cached_property
def eid2idx(self):
"""
:returns: a dict eid -> index in the events table
"""
return dict(zip(self.datastore['events']['id'], range(self.E)))
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
with sav_mon:
data = result.pop('gmfdata')
if len(data):
idxs = base.get_idxs(data, self.eid2idx) # this has to be fast
data['eid'] = idxs # replace eid with idx
self.datastore.extend('gmf_data/data', data)
sig_eps = result.pop('sig_eps')
sig_eps['eid'] = base.get_idxs(sig_eps, self.eid2idx)
self.datastore.extend('gmf_data/sigma_epsilon', sig_eps)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
self.datastore.flush()
return acc
def save_events(self, rup_array):
"""
:param rup_array: an array of ruptures with fields grp_id
:returns: a list of RuptureGetters
"""
# this is very fast compared to saving the ruptures
eids = rupture.get_eids(rup_array, self.samples_by_grp,
self.num_rlzs_by_grp)
self.check_overflow() # check the number of events
events = numpy.zeros(len(eids), rupture.events_dt)
# when computing the events all ruptures must be considered,
# including the ones far away that will be discarded later on
rgetters = self.gen_rupture_getters()
# build the associations eid -> rlz sequentially or in parallel
# this is very fast: I saw 30 million events associated in 1 minute!
logging.info('Building associations event_id -> rlz_id for %d events',
len(events))
if len(events) < 1E5:
it = map(RuptureGetter.get_eid_rlz, rgetters)
else:
it = parallel.Starmap(RuptureGetter.get_eid_rlz,
((rgetter, ) for rgetter in rgetters),
progress=logging.debug,
hdf5path=self.datastore.filename)
i = 0
for eid_rlz in it:
for er in eid_rlz:
events[i] = er
i += 1
if i >= TWO32:
raise ValueError('There are more than %d events!' % i)
events.sort(order='id') # fast too
n_unique_events = len(numpy.unique(events['id']))
assert n_unique_events == len(events), (n_unique_events, len(events))
self.datastore['events'] = events
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). They could be relaxed in the future.
"""
oq = self.oqparam
max_ = dict(sites=TWO32, events=TWO32, imts=2**8)
num_ = dict(events=self.E, imts=len(self.oqparam.imtls))
if self.sitecol:
num_['sites'] = n = len(self.sitecol)
if (oq.calculation_mode == 'event_based'
and oq.ground_motion_fields and n > oq.max_sites_per_gmf):
raise ValueError(
'You cannot compute the GMFs for %d > %d sites' %
(n, oq.max_sites_per_gmf))
for var in num_:
if num_[var] > max_[var]:
raise ValueError(
'The %s calculator is restricted to %d %s, got %d' %
(oq.calculation_mode, max_[var], var, num_[var]))
def set_param(self, **kw):
oq = self.oqparam
# set the minimum_intensity
if hasattr(self, 'crmodel') and not oq.minimum_intensity:
# infer it from the risk models if not directly set in job.ini
oq.minimum_intensity = self.crmodel.min_iml
min_iml = oq.min_iml
if min_iml.sum() == 0:
logging.warning('The GMFs are not filtered: '
'you may want to set a minimum_intensity')
else:
logging.info('minimum_intensity=%s', oq.minimum_intensity)
self.param.update(oqparam=oq,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
ruptures_per_block=oq.ruptures_per_block,
imtls=oq.imtls,
filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path,
**kw)
def execute(self):
oq = self.oqparam
self.set_param()
self.offset = 0
self.indices = collections.defaultdict(list) # sid, idx -> indices
if oq.hazard_calculation_id and 'ruptures' in self.datastore:
# from ruptures
self.datastore.parent = util.read(oq.hazard_calculation_id)
self.init_logic_tree(self.csm_info)
else:
# from sources
self.build_events_from_sources()
if (oq.ground_motion_fields is False
and oq.hazard_curves_from_gmfs is False):
return {}
if not oq.imtls:
raise InvalidFile('There are no intensity measure types in %s' %
oq.inputs['job_ini'])
iterargs = ((rgetter, self.src_filter, self.param)
for rgetter in self.gen_rupture_getters())
# call compute_gmfs in parallel
acc = parallel.Starmap(self.core_task.__func__,
iterargs,
hdf5path=self.datastore.filename).reduce(
self.agg_dicts, self.acc0())
if self.indices:
N = len(self.sitecol.complete)
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices',
measuremem=True,
autoflush=True):
self.datastore['gmf_data/imts'] = ' '.join(oq.imtls)
dset = self.datastore.create_dset('gmf_data/indices',
hdf5.vuint32,
shape=(N, 2),
fillvalue=None)
num_evs = self.datastore.create_dset('gmf_data/events_by_sid',
U32, (N, ))
for sid in self.sitecol.complete.sids:
start = numpy.array(self.indices[sid, 0])
stop = numpy.array(self.indices[sid, 1])
dset[sid, 0] = start
dset[sid, 1] = stop
num_evs[sid] = (stop - start).sum()
num_evs = num_evs[()]
avg_events_by_sid = num_evs.sum() / N
logging.info('Found ~%d GMVs per site', avg_events_by_sid)
self.datastore.set_attrs('gmf_data',
avg_events_by_sid=avg_events_by_sid,
max_events_by_sid=num_evs.max())
elif oq.ground_motion_fields:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def post_execute(self, result):
oq = self.oqparam
if not oq.ground_motion_fields and not oq.hazard_curves_from_gmfs:
return
N = len(self.sitecol.complete)
L = len(oq.imtls.array)
if result and oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
S = len(hstats)
pmaps = list(result.values())
R = len(weights)
if len(pmaps) != R:
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
if oq.individual_curves:
logging.info('Saving individual hazard curves')
self.datastore.create_dset('hcurves-rlzs', F32, (N, R, L))
self.datastore.set_attrs('hcurves-rlzs', nbytes=N * R * L * 4)
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset('hmaps-rlzs', F32,
(N, R, M, P))
self.datastore.set_attrs('hmaps-rlzs',
nbytes=N * R * P * M * 4)
for r, pmap in enumerate(pmaps):
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves-rlzs'][:, r] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, r] = hmap[sid].array
if S:
logging.info('Computing statistical hazard curves')
self.datastore.create_dset('hcurves-stats', F32, (N, S, L))
self.datastore.set_attrs('hcurves-stats', nbytes=N * S * L * 4)
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset('hmaps-stats', F32,
(N, S, M, P))
self.datastore.set_attrs('hmaps-stats',
nbytes=N * S * P * M * 4)
for s, stat in enumerate(hstats):
pmap = compute_pmap_stats(pmaps, [hstats[stat]], weights,
oq.imtls)
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves-stats'][:, s] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, s] = hmap[sid].array
if self.datastore.parent:
self.datastore.parent.open('r')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
job_id = logs.init('job')
oq.calculation_mode = 'classical'
self.cl = ClassicalCalculator(oq, job_id)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
engine.expose_outputs(self.cl.datastore)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
self.rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warning(
'Relative difference with the classical '
'mean curves: %d%% at site index %d', self.rdiff * 100, index)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
accept_precalc = ['event_based', 'event_based_risk', 'ucerf_hazard']
build_ruptures = sample_ruptures
@cached_property
def csm_info(self):
"""
:returns: a cached CompositionInfo object
"""
try:
return self.csm.info
except AttributeError:
return self.datastore.parent['csm_info']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
self.rupser = calc.RuptureSerializer(self.datastore)
def init_logic_tree(self, csm_info):
self.trt_by_grp = csm_info.grp_by("trt")
self.rlzs_assoc = csm_info.get_rlzs_assoc()
self.rlzs_by_gsim_grp = csm_info.get_rlzs_by_gsim_grp()
self.samples_by_grp = csm_info.get_samples_by_grp()
self.num_rlzs_by_grp = {
grp_id:
sum(len(rlzs) for rlzs in self.rlzs_by_gsim_grp[grp_id].values())
for grp_id in self.rlzs_by_gsim_grp}
def acc0(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.L = len(self.oqparam.imtls.array)
zd = {r: ProbabilityMap(self.L) for r in range(self.R)}
return zd
def build_events_from_sources(self):
"""
Prefilter the composite source model and store the source_info
"""
oq = self.oqparam
gsims_by_trt = self.csm.gsim_lt.values
def weight_src(src):
return src.num_ruptures
logging.info('Building ruptures')
smap = parallel.Starmap(
self.build_ruptures.__func__, monitor=self.monitor())
eff_ruptures = AccumDict(accum=0) # grp_id => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(2, F32))
ses_idx = 0
for sm_id, sm in enumerate(self.csm.source_models):
logging.info('Sending %s', sm)
for sg in sm.src_groups:
if not sg.sources:
continue
par = self.param.copy()
par['gsims'] = gsims_by_trt[sg.trt]
if sg.atomic: # do not split the group
smap.submit(sg, self.src_filter, par)
else: # traditional groups
for block in self.block_splitter(
sg.sources, weight_src, by_grp):
if 'ucerf' in oq.calculation_mode:
for i in range(oq.ses_per_logic_tree_path):
par['ses_seeds'] = [
(ses_idx, oq.ses_seed + i + 1)]
smap.submit(block, self.src_filter, par)
ses_idx += 1
else:
smap.submit(block, self.src_filter, par)
mon = self.monitor('saving ruptures')
for dic in smap:
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
if dic['rup_array']:
with mon:
self.rupser.save(dic['rup_array'])
self.rupser.close()
if not self.rupser.nruptures:
raise RuntimeError('No ruptures were generated, perhaps the '
'investigation time is too short')
# logic tree reduction, must be called before storing the events
self.store_rlz_info(eff_ruptures)
store_rlzs_by_grp(self.datastore)
self.init_logic_tree(self.csm.info)
with self.monitor('store source_info', autoflush=True):
self.store_source_info(calc_times)
logging.info('Reordering the ruptures and storing the events')
attrs = self.datastore.getitem('ruptures').attrs
sorted_ruptures = self.datastore.getitem('ruptures')[()]
# order the ruptures by serial
sorted_ruptures.sort(order='serial')
ngroups = len(self.csm.info.trt_by_grp)
grp_indices = numpy.zeros((ngroups, 2), U32)
grp_ids = sorted_ruptures['grp_id']
for grp_id, [startstop] in get_indices(grp_ids).items():
grp_indices[grp_id] = startstop
self.datastore['ruptures'] = sorted_ruptures
self.datastore.set_attrs('ruptures', grp_indices=grp_indices, **attrs)
self.save_events(sorted_ruptures)
def gen_rupture_getters(self):
"""
:returns: a list of RuptureGetters
"""
dstore = (self.datastore.parent if self.datastore.parent
else self.datastore)
hdf5cache = dstore.hdf5cache()
mode = 'r+' if os.path.exists(hdf5cache) else 'w'
with hdf5.File(hdf5cache, mode) as cache:
if 'ruptures' not in cache:
dstore.hdf5.copy('ruptures', cache)
if 'rupgeoms' not in cache:
dstore.hdf5.copy('rupgeoms', cache)
yield from gen_rupture_getters(
dstore, concurrent_tasks=self.oqparam.concurrent_tasks or 1,
hdf5cache=hdf5cache)
if self.datastore.parent:
self.datastore.parent.close()
@cached_property
def eid2idx(self):
"""
:returns: a dict eid -> index in the events table
"""
return dict(zip(self.datastore['events']['id'], range(self.E)))
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
with sav_mon:
data = result.pop('gmfdata')
if len(data) == 0:
return acc
idxs = base.get_idxs(data, self.eid2idx) # this has to be fast
data['eid'] = idxs # replace eid with idx
self.datastore.extend('gmf_data/data', data)
sig_eps = result.pop('sig_eps')
sig_eps['eid'] = base.get_idxs(sig_eps, self.eid2idx)
self.datastore.extend('gmf_data/sigma_epsilon', sig_eps)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError(
'The gmf_data table has more than %d rows' % TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def save_events(self, rup_array):
"""
:param rup_array: an array of ruptures with fields grp_id
:returns: a list of RuptureGetters
"""
# this is very fast compared to saving the ruptures
eids = rupture.get_eids(
rup_array, self.samples_by_grp, self.num_rlzs_by_grp)
self.check_overflow() # check the number of events
events = numpy.zeros(len(eids), rupture.events_dt)
# when computing the events all ruptures must be considered,
# including the ones far away that will be discarded later on
rgetters = self.gen_rupture_getters()
# build the associations eid -> rlz in parallel
smap = parallel.Starmap(RuptureGetter.get_eid_rlz,
((rgetter,) for rgetter in rgetters),
self.monitor('get_eid_rlz'),
progress=logging.debug)
i = 0
for eid_rlz in smap: # 30 million of events associated in 1 minute!
for er in eid_rlz:
events[i] = er
i += 1
if i >= TWO32:
raise ValueError('There are more than %d events!' % i)
events.sort(order='id') # fast too
n_unique_events = len(numpy.unique(events['id']))
assert n_unique_events == len(events), (n_unique_events, len(events))
self.datastore['events'] = events
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). They could be relaxed in the future.
"""
max_ = dict(sites=TWO32, events=TWO32, imts=2**8)
num_ = dict(events=self.E, imts=len(self.oqparam.imtls))
if self.sitecol:
num_['sites'] = len(self.sitecol)
for var in num_:
if num_[var] > max_[var]:
raise ValueError(
'The event based calculator is restricted to '
'%d %s, got %d' % (max_[var], var, num_[var]))
def set_param(self, **kw):
oq = self.oqparam
# set the minimum_intensity
if hasattr(self, 'riskmodel') and not oq.minimum_intensity:
# infer it from the risk models if not directly set in job.ini
oq.minimum_intensity = self.riskmodel.min_iml
min_iml = oq.min_iml
if min_iml.sum() == 0:
logging.warning('The GMFs are not filtered: '
'you may want to set a minimum_intensity')
else:
logging.info('minimum_intensity=%s', oq.minimum_intensity)
self.param.update(
oqparam=oq,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
ruptures_per_block=oq.ruptures_per_block,
imtls=oq.imtls, filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path, **kw)
def execute(self):
oq = self.oqparam
self.set_param()
self.offset = 0
self.indices = collections.defaultdict(list) # sid, idx -> indices
if oq.hazard_calculation_id and 'ruptures' in self.datastore:
# from ruptures
self.datastore.parent = datastore.read(oq.hazard_calculation_id)
self.init_logic_tree(self.csm_info)
else:
# from sources
self.build_events_from_sources()
if oq.ground_motion_fields is False:
return {}
if not oq.imtls:
raise InvalidFile('There are no intensity measure types in %s' %
oq.inputs['job_ini'])
iterargs = ((rgetter, self.src_filter, self.param)
for rgetter in self.gen_rupture_getters())
# call compute_gmfs in parallel
acc = parallel.Starmap(
self.core_task.__func__, iterargs, self.monitor()
).reduce(self.agg_dicts, self.acc0())
if self.indices:
N = len(self.sitecol.complete)
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices', measuremem=True,
autoflush=True):
self.datastore['gmf_data/imts'] = ' '.join(oq.imtls)
dset = self.datastore.create_dset(
'gmf_data/indices', hdf5.vuint32,
shape=(N, 2), fillvalue=None)
num_evs = self.datastore.create_dset(
'gmf_data/events_by_sid', U32, (N,))
for sid in self.sitecol.complete.sids:
start = numpy.array(self.indices[sid, 0])
stop = numpy.array(self.indices[sid, 1])
dset[sid, 0] = start
dset[sid, 1] = stop
num_evs[sid] = (stop - start).sum()
num_evs = num_evs[()]
avg_events_by_sid = num_evs.sum() / N
logging.info('Found ~%d GMVs per site', avg_events_by_sid)
self.datastore.set_attrs(
'gmf_data', avg_events_by_sid=avg_events_by_sid,
max_events_by_sid=num_evs.max())
elif oq.ground_motion_fields:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def post_execute(self, result):
oq = self.oqparam
if not oq.ground_motion_fields:
return
N = len(self.sitecol.complete)
L = len(oq.imtls.array)
if result and oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
S = len(hstats)
pmaps = list(result.values())
R = len(weights)
if len(pmaps) != R:
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
if oq.individual_curves:
logging.info('Saving individual hazard curves')
self.datastore.create_dset('hcurves-rlzs', F32, (N, R, L))
self.datastore.set_attrs('hcurves-rlzs', nbytes=N * R * L * 4)
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-rlzs', F32, (N, R, M, P))
self.datastore.set_attrs(
'hmaps-rlzs', nbytes=N * R * P * M * 4)
for r, pmap in enumerate(pmaps):
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves-rlzs'][:, r] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, r] = hmap[sid].array
if S:
logging.info('Computing statistical hazard curves')
self.datastore.create_dset('hcurves-stats', F32, (N, S, L))
self.datastore.set_attrs('hcurves-stats', nbytes=N * S * L * 4)
if oq.poes:
P = len(oq.poes)
M = len(oq.imtls)
ds = self.datastore.create_dset(
'hmaps-stats', F32, (N, S, M, P))
self.datastore.set_attrs(
'hmaps-stats', nbytes=N * S * P * M * 4)
for s, stat in enumerate(hstats):
pmap = compute_pmap_stats(
pmaps, [hstats[stat]], weights, oq.imtls)
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves-stats'][:, s] = arr
if oq.poes:
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
for sid in hmap:
ds[sid, s] = hmap[sid].array
if self.datastore.parent:
self.datastore.parent.open('r')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
job_id = logs.init('job')
self.cl = ClassicalCalculator(oq, job_id)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
engine.expose_outputs(self.cl.datastore)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
self.rdiff, index = util.max_rel_diff_index(
cl_mean_curves, eb_mean_curves)
logging.warning('Relative difference with the classical '
'mean curves: %d%% at site index %d',
self.rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ruptures only
"""
pre_calculator = 'event_based_rupture'
core_func = compute_gmfs_and_curves
is_stochastic = True
def pre_execute(self):
"""
Read the precomputed ruptures (or compute them on the fly) and
prepare some empty files in the export directory to store the gmfs
(if any). If there were pre-existing files, they will be erased.
"""
super(EventBasedCalculator, self).pre_execute()
self.sesruptures = []
gsims_by_col = self.rlzs_assoc.get_gsims_by_col()
self.datasets = {}
for col_id, sescol in enumerate(self.datastore['sescollection']):
gmf_dt = gsim_imt_dt(gsims_by_col[col_id], self.oqparam.imtls)
for tag, sesrup in sorted(sescol.items()):
sesrup = sescol[tag]
self.sesruptures.append(sesrup)
if self.oqparam.ground_motion_fields and sescol:
self.datasets[col_id] = self.datastore.create_dset(
'gmfs/col%02d' % col_id, gmf_dt)
def combine_curves_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary trt_id, gsim -> gmf_array or curves_by_imt
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
save_gmfs = self.oqparam.ground_motion_fields
for trt_id, gsim_or_col in res:
if isinstance(gsim_or_col, int) and save_gmfs:
with sav_mon:
gmfa = res[trt_id, gsim_or_col]
dataset = self.datasets[gsim_or_col]
dataset.attrs['trt_model_id'] = trt_id
dataset.extend(gmfa)
self.nbytes += gmfa.nbytes
self.datastore.hdf5.flush()
elif isinstance(gsim_or_col, str): # aggregate hcurves
with agg_mon:
curves_by_imt = res[trt_id, gsim_or_col]
acc = agg_dicts(
acc, AccumDict({(trt_id, gsim_or_col): curves_by_imt}))
sav_mon.flush()
agg_mon.flush()
return acc
def execute(self):
"""
Run in parallel `core_func(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
monitor = self.monitor(self.core_func.__name__)
monitor.oqparam = oq
zc = zero_curves(len(self.sitecol.complete), self.oqparam.imtls)
zerodict = AccumDict((key, zc) for key in self.rlzs_assoc)
self.nbytes = 0
curves_by_trt_gsim = parallel.apply_reduce(
self.core_func.__func__,
(self.sesruptures, self.sitecol, self.rlzs_assoc, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
acc=zerodict,
agg=self.combine_curves_and_save_gmfs,
key=operator.attrgetter('col_id'))
if oq.ground_motion_fields:
# sanity check on the saved gmfs size
expected_nbytes = self.datastore['counts_per_rlz'].attrs[
'gmfs_nbytes']
self.datastore['gmfs'].attrs['nbytes'] = self.nbytes
assert self.nbytes == expected_nbytes, (self.nbytes,
expected_nbytes)
return curves_by_trt_gsim
def post_execute(self, result):
"""
:param result:
a dictionary (trt_model_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
if oq.hazard_curves_from_gmfs:
ClassicalCalculator.post_execute.__func__(self, result)
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# use a different datastore
self.cl = ClassicalCalculator(oq, self.monitor)
self.cl.datastore.parent = self.datastore
result = self.cl.run(pre_execute=False, clean_up=False)
for imt in self.mean_curves.dtype.fields:
rdiff, index = max_rel_diff_index(self.cl.mean_curves[imt],
self.mean_curves[imt])
logging.warn(
'Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d', imt,
rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def pre_execute(self):
"""
Read the precomputed ruptures (or compute them on the fly) and
prepare some empty files in the export directory to store the gmfs
(if any). If there were pre-existing files, they will be erased.
"""
super(EventBasedCalculator, self).pre_execute()
rlzs_by_tr_id = self.rlzs_assoc.get_rlzs_by_grp_id()
num_rlzs = {t: len(rlzs) for t, rlzs in rlzs_by_tr_id.items()}
self.sesruptures = []
for serial in self.datastore['sescollection']:
sr = self.datastore['sescollection/' + serial]
sr.set_weight(num_rlzs, {})
self.sesruptures.append(sr)
self.sesruptures.sort(key=operator.attrgetter('serial'))
if self.oqparam.ground_motion_fields:
calc.check_overflow(self)
for rlz in self.rlzs_assoc.realizations:
self.datastore.create_dset(
'gmf_data/%04d' % rlz.ordinal, calc.gmv_dt)
def combine_curves_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary rlzi, imt -> [gmf_array, curves_by_imt]
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
for rlzi in res:
gmfa, curves = res[rlzi]
if gmfa is not None:
with sav_mon:
hdf5.extend(self.datastore['gmf_data/%04d' % rlzi], gmfa)
if curves is not None: # aggregate hcurves
with agg_mon:
self.agg_dicts(acc, {rlzi: curves})
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
monitor = self.monitor(self.core_task.__name__)
monitor.oqparam = oq
min_iml = calc.fix_minimum_intensity(
oq.minimum_intensity, oq.imtls)
acc = parallel.apply_reduce(
self.core_task.__func__,
(self.sesruptures, self.sitecol, oq.imtls, self.rlzs_assoc,
min_iml, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
agg=self.combine_curves_and_save_gmfs,
acc=ProbabilityMap(),
key=operator.attrgetter('grp_id'),
weight=operator.attrgetter('weight'))
if oq.ground_motion_fields:
self.datastore.set_nbytes('gmf_data')
return acc
def post_execute(self, result):
"""
:param result:
a dictionary (src_group_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
elif oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
dic = {}
for rlzi in result:
dic[rlzs[rlzi]] = array_of_curves(
result[rlzi], len(self.sitecol), oq.imtls)
self.save_curves(dic)
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq, self.monitor)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run()
for imt in self.mean_curves.dtype.fields:
rdiff, index = max_rel_diff_index(
self.cl.mean_curves[imt], self.mean_curves[imt])
logging.warn('Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d',
imt, rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def combine_pmaps_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary rlzi, imt -> [gmf_array, curves_by_imt]
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
self.gmdata += res['gmdata']
data = res['gmfdata']
if data is not None:
with sav_mon:
hdf5.extend3(self.datastore.hdf5path, 'gmf_data/data', data)
for sid, start, stop in res['indices']:
self.indices[sid].append(
(start + self.offset, stop + self.offset))
self.offset += len(data)
slicedic = self.oqparam.imtls.slicedic
with agg_mon:
for key, poes in res['hcurves'].items():
rlzi, sid, imt = str2rsi(key)
array = acc[rlzi].setdefault(sid, 0).array[slicedic[imt], 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
if 'ruptures' in res:
vars(EventBasedRuptureCalculator)['save_ruptures'](self,
res['ruptures'])
return acc
def gen_args(self, ruptures_by_grp):
"""
:param ruptures_by_grp: a dictionary of EBRupture objects
:yields: the arguments for compute_gmfs_and_curves
"""
oq = self.oqparam
monitor = self.monitor(self.core_task.__name__)
imts = list(oq.imtls)
min_iml = calc.fix_minimum_intensity(oq.minimum_intensity, imts)
correl_model = oq.get_correl_model()
for grp_id in ruptures_by_grp:
ruptures = ruptures_by_grp[grp_id]
if not ruptures:
continue
rlzs_by_gsim = self.rlzs_assoc.get_rlzs_by_gsim(grp_id)
for block in block_splitter(ruptures, oq.ruptures_per_block):
samples = self.rlzs_assoc.samples[grp_id]
getter = GmfGetter(grp_id, rlzs_by_gsim, block, self.sitecol,
imts, min_iml, oq.truncation_level,
correl_model, samples)
yield getter, oq, monitor
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
if self.oqparam.ground_motion_fields:
calc.check_overflow(self)
with self.monitor('reading ruptures', autoflush=True):
ruptures_by_grp = (self.precalc.result if self.precalc else
get_ruptures_by_grp(self.datastore.parent))
self.csm_info = self.datastore['csm_info']
self.sm_id = {
tuple(sm.path): sm.ordinal
for sm in self.csm_info.source_models
}
L = len(oq.imtls.array)
rlzs = self.rlzs_assoc.realizations
allargs = list(self.gen_args(ruptures_by_grp))
res = parallel.Starmap(self.core_task.__func__, allargs).submit_all()
self.gmdata = {}
self.offset = 0
self.indices = collections.defaultdict(list) # sid -> indices
acc = res.reduce(self.combine_pmaps_and_save_gmfs,
{rlz.ordinal: ProbabilityMap(L)
for rlz in rlzs})
save_gmdata(self, len(rlzs))
if self.indices:
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices',
measuremem=True,
autoflush=True):
self.datastore.save_vlen('gmf_data/indices', [
numpy.array(self.indices[sid], indices_dt)
for sid in self.sitecol.complete.sids
])
return acc
def save_gmf_bytes(self):
"""Save the attribute nbytes in the gmf_data datasets"""
ds = self.datastore
for sm_id in ds['gmf_data']:
ds.set_nbytes('gmf_data/' + sm_id)
ds.set_nbytes('gmf_data')
def post_execute(self, result):
"""
:param result:
a dictionary (src_group_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
elif oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# save individual curves
for i in sorted(result):
key = 'hcurves/rlz-%03d' % i
if result[i]:
self.datastore[key] = result[i]
else:
self.datastore[key] = ProbabilityMap(oq.imtls.array.size)
logging.info('Zero curves for %s', key)
# compute and save statistics; this is done in process
# we don't need to parallelize, since event based calculations
# involves a "small" number of sites (<= 65,536)
weights = [rlz.weight for rlz in rlzs]
hstats = self.oqparam.hazard_stats()
if len(hstats) and len(rlzs) > 1:
for kind, stat in hstats:
pmap = compute_pmap_stats(result.values(), [stat], weights)
self.datastore['hcurves/' + kind] = pmap
if 'gmf_data' in self.datastore:
self.save_gmf_bytes()
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq, self.monitor('classical'))
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
for imt in eb_mean_curves.dtype.names:
rdiff, index = util.max_rel_diff_index(cl_mean_curves[imt],
eb_mean_curves[imt])
logging.warn(
'Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d', imt,
rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def pre_execute(self):
"""
Read the precomputed ruptures (or compute them on the fly) and
prepare some empty files in the export directory to store the gmfs
(if any). If there were pre-existing files, they will be erased.
"""
super(EventBasedCalculator, self).pre_execute()
rlzs_by_tr_id = self.rlzs_assoc.get_rlzs_by_trt_id()
num_rlzs = {t: len(rlzs) for t, rlzs in rlzs_by_tr_id.items()}
self.sesruptures = []
for serial in self.datastore['sescollection']:
sr = self.datastore['sescollection/' + serial]
sr.set_weight(num_rlzs, {})
self.sesruptures.append(sr)
self.sesruptures.sort(key=operator.attrgetter('serial'))
if self.oqparam.ground_motion_fields:
for rlz in self.rlzs_assoc.realizations:
self.datastore.create_dset('gmf_data/%04d' % rlz.ordinal,
gmv_dt)
def combine_curves_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary rlzi, imt -> [gmf_array, curves_by_imt]
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
for rlzi in res:
gmfa, curves = res[rlzi]
if gmfa is not None:
with sav_mon:
hdf5.extend(self.datastore['gmf_data/%04d' % rlzi], gmfa)
if curves is not None: # aggregate hcurves
with agg_mon:
self.agg_dicts(acc, {rlzi: curves})
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
monitor = self.monitor(self.core_task.__name__)
monitor.oqparam = oq
min_iml = fix_minimum_intensity(oq.minimum_intensity, oq.imtls)
acc = parallel.apply_reduce(
self.core_task.__func__, (self.sesruptures, self.sitecol, oq.imtls,
self.rlzs_assoc, min_iml, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
agg=self.combine_curves_and_save_gmfs,
acc=ProbabilityMap(),
key=operator.attrgetter('trt_id'),
weight=operator.attrgetter('weight'))
if oq.ground_motion_fields:
self.datastore.set_nbytes('gmf_data')
return acc
def post_execute(self, result):
"""
:param result:
a dictionary (trt_model_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
elif oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
dic = {}
for rlzi in result:
dic[rlzs[rlzi]] = array_of_curves(result[rlzi],
len(self.sitecol), oq.imtls)
self.save_curves(dic)
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq, self.monitor)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(hazard_calculation_id=self.datastore.calc_id)
for imt in self.mean_curves.dtype.fields:
rdiff, index = max_rel_diff_index(self.cl.mean_curves[imt],
self.mean_curves[imt])
logging.warn(
'Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d', imt,
rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ruptures only
"""
pre_calculator = 'event_based_rupture'
core_func = compute_gmfs_and_curves
is_stochastic = True
def pre_execute(self):
"""
Read the precomputed ruptures (or compute them on the fly) and
prepare some empty files in the export directory to store the gmfs
(if any). If there were pre-existing files, they will be erased.
"""
super(EventBasedCalculator, self).pre_execute()
self.sesruptures = []
gsims_by_col = self.rlzs_assoc.get_gsims_by_col()
self.datasets = {}
for col_id, sescol in enumerate(self.datastore['sescollection']):
gmf_dt = gsim_imt_dt(gsims_by_col[col_id], self.oqparam.imtls)
for tag, sesrup in sorted(sescol.items()):
sesrup = sescol[tag]
self.sesruptures.append(sesrup)
if self.oqparam.ground_motion_fields and sescol:
self.datasets[col_id] = self.datastore.create_dset(
'gmfs/col%02d' % col_id, gmf_dt)
def combine_curves_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary trt_id, gsim -> gmf_array or curves_by_imt
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
save_gmfs = self.oqparam.ground_motion_fields
for trt_id, gsim_or_col in res:
if isinstance(gsim_or_col, int) and save_gmfs:
with sav_mon:
gmfa = res[trt_id, gsim_or_col]
dataset = self.datasets[gsim_or_col]
dataset.attrs['trt_model_id'] = trt_id
dataset.extend(gmfa)
self.nbytes += gmfa.nbytes
self.datastore.hdf5.flush()
elif isinstance(gsim_or_col, str): # aggregate hcurves
with agg_mon:
curves_by_imt = res[trt_id, gsim_or_col]
acc = agg_dicts(
acc, AccumDict({(trt_id, gsim_or_col): curves_by_imt}))
sav_mon.flush()
agg_mon.flush()
return acc
def execute(self):
"""
Run in parallel `core_func(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
monitor = self.monitor(self.core_func.__name__)
monitor.oqparam = oq
zc = zero_curves(len(self.sitecol.complete), self.oqparam.imtls)
zerodict = AccumDict((key, zc) for key in self.rlzs_assoc)
self.nbytes = 0
curves_by_trt_gsim = parallel.apply_reduce(
self.core_func.__func__,
(self.sesruptures, self.sitecol, self.rlzs_assoc, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
acc=zerodict, agg=self.combine_curves_and_save_gmfs,
key=operator.attrgetter('col_id'))
if oq.ground_motion_fields:
# sanity check on the saved gmfs size
expected_nbytes = self.datastore[
'counts_per_rlz'].attrs['gmfs_nbytes']
self.datastore['gmfs'].attrs['nbytes'] = self.nbytes
assert self.nbytes == expected_nbytes, (
self.nbytes, expected_nbytes)
return curves_by_trt_gsim
def post_execute(self, result):
"""
:param result:
a dictionary (trt_model_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
if oq.hazard_curves_from_gmfs:
ClassicalCalculator.post_execute.__func__(self, result)
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# use a different datastore
self.cl = ClassicalCalculator(oq, self.monitor)
self.cl.datastore.parent = self.datastore
result = self.cl.run(pre_execute=False, clean_up=False)
for imt in self.mean_curves.dtype.fields:
rdiff, index = max_rel_diff_index(
self.cl.mean_curves[imt], self.mean_curves[imt])
logging.warn('Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d',
imt, rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def combine_pmaps_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary rlzi, imt -> [gmf_array, curves_by_imt]
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
if res['gmfcoll'] is not None:
with sav_mon:
for rlz, array in res['gmfcoll'].items():
if len(array):
key = 'gmf_data/%04d' % rlz.ordinal
self.datastore.extend(key, array)
slicedic = self.oqparam.imtls.slicedic
with agg_mon:
for key, poes in res['hcurves'].items():
rlzi, sid, imt = str2rsi(key)
array = acc[rlzi].setdefault(sid, 0).array[slicedic[imt], 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
if 'ruptures' in res:
vars(EventBasedRuptureCalculator)['save_ruptures'](
self, res['ruptures'])
return acc
def gen_args(self, ebruptures):
"""
:param ebruptures: a list of EBRupture objects to be split
:yields: the arguments for compute_gmfs_and_curves
"""
oq = self.oqparam
monitor = self.monitor(self.core_task.__name__)
monitor.oqparam = oq
imts = list(oq.imtls)
min_iml = calc.fix_minimum_intensity(oq.minimum_intensity, imts)
grp_trt = {sg.id: sg.trt for sm in self.csm.info.source_models
for sg in sm.src_groups}
rlzs_by_grp = self.rlzs_assoc.get_rlzs_by_grp_id()
correl_model = oq.get_correl_model()
for block in split_in_blocks(
ebruptures, oq.concurrent_tasks or 1,
key=operator.attrgetter('grp_id')):
grp_id = block[0].grp_id
trt = grp_trt[grp_id]
gsims = [dic[trt] for dic in self.rlzs_assoc.gsim_by_trt]
samples = self.rlzs_assoc.samples[grp_id]
getter = GmfGetter(gsims, block, self.sitecol,
imts, min_iml, oq.truncation_level,
correl_model, samples)
yield getter, rlzs_by_grp[grp_id], monitor
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
self.sesruptures = []
if self.precalc: # the ruptures are already in memory
for grp_id, sesruptures in self.precalc.result.items():
for sr in sesruptures:
self.sesruptures.append(sr)
else: # read the ruptures from the datastore
for serial in self.datastore['sescollection']:
sr = self.datastore['sescollection/' + serial]
self.sesruptures.append(sr)
self.sesruptures.sort(key=operator.attrgetter('serial'))
if self.oqparam.ground_motion_fields:
calc.check_overflow(self)
L = len(oq.imtls.array)
res = parallel.starmap(
self.core_task.__func__, self.gen_args(self.sesruptures)
).submit_all()
acc = functools.reduce(self.combine_pmaps_and_save_gmfs, res, {
rlz.ordinal: ProbabilityMap(L, 1)
for rlz in self.rlzs_assoc.realizations})
self.save_data_transfer(res)
return acc
def post_execute(self, result):
"""
:param result:
a dictionary (src_group_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
elif oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# save individual curves
if self.oqparam.individual_curves:
for i in sorted(result):
key = 'hcurves/rlz-%03d' % i
if result[i]:
self.datastore[key] = result[i]
else:
logging.info('Zero curves for %s', key)
# compute and save statistics; this is done in process
# we don't need to parallelize, since event based calculations
# involves a "small" number of sites (<= 65,536)
weights = (None if self.oqparam.number_of_logic_tree_samples
else [rlz.weight for rlz in rlzs])
pstats = PmapStats(self.oqparam.quantile_hazard_curves, weights)
for kind, stat in pstats.compute(
self.sitecol.sids, list(result.values())):
if kind == 'mean' and not self.oqparam.mean_hazard_curves:
continue
self.datastore['hcurves/' + kind] = stat
if ('gmf_data' in self.datastore and 'nbytes' not
in self.datastore['gmf_data'].attrs):
self.datastore.set_nbytes('gmf_data')
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq, self.monitor)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
for imt in eb_mean_curves.dtype.names:
rdiff, index = max_rel_diff_index(
cl_mean_curves[imt], eb_mean_curves[imt])
logging.warn('Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d',
imt, rdiff * 100, index)
class EventBasedCalculator(ClassicalCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
pre_calculator = 'event_based_rupture'
core_task = compute_gmfs_and_curves
is_stochastic = True
def pre_execute(self):
"""
Read the precomputed ruptures (or compute them on the fly) and
prepare some empty files in the export directory to store the gmfs
(if any). If there were pre-existing files, they will be erased.
"""
super(EventBasedCalculator, self).pre_execute()
self.sesruptures = []
for serial in self.datastore['sescollection']:
self.sesruptures.append(self.datastore['sescollection/' + serial])
self.sesruptures.sort(key=operator.attrgetter('serial'))
def combine_curves_and_save_gmfs(self, acc, res):
"""
Combine the hazard curves (if any) and save the gmfs (if any)
sequentially; notice that the gmfs may come from
different tasks in any order.
:param acc: an accumulator for the hazard curves
:param res: a dictionary trt_id, gsim -> gmf_array or curves_by_imt
:returns: a new accumulator
"""
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
save_gmfs = self.oqparam.ground_motion_fields
for trt_id in res:
if isinstance(trt_id, int) and save_gmfs:
with sav_mon:
gmfa_sids_etags = res[trt_id]
for serial in sorted(gmfa_sids_etags):
gst = gmfa_sids_etags[serial]
self.datastore['gmf_data/%s' % serial] = gst.gmfa
self.datastore['sid_data/%s' % serial] = gst.sids
self.datastore.set_attrs('gmf_data/%s' % serial,
trt_id=trt_id,
etags=gst.etags)
self.datastore.hdf5.flush()
elif isinstance(trt_id, tuple): # aggregate hcurves
with agg_mon:
self.agg_dicts(acc, {trt_id: res[trt_id]})
sav_mon.flush()
agg_mon.flush()
return acc
def execute(self):
"""
Run in parallel `core_task(sources, sitecol, monitor)`, by
parallelizing on the ruptures according to their weight and
tectonic region type.
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
monitor = self.monitor(self.core_task.__name__)
monitor.oqparam = oq
zc = zero_curves(len(self.sitecol.complete), self.oqparam.imtls)
zerodict = AccumDict((key, zc) for key in self.rlzs_assoc)
curves_by_trt_gsim = parallel.apply_reduce(
self.core_task.__func__,
(self.sesruptures, self.sitecol, self.rlzs_assoc, monitor),
concurrent_tasks=self.oqparam.concurrent_tasks,
acc=zerodict, agg=self.combine_curves_and_save_gmfs,
key=operator.attrgetter('trt_id'),
weight=operator.attrgetter('multiplicity'))
if oq.ground_motion_fields:
self.datastore.set_nbytes('gmf_data')
self.datastore.set_nbytes('sid_data')
return curves_by_trt_gsim
def post_execute(self, result):
"""
:param result:
a dictionary (trt_model_id, gsim) -> haz_curves or an empty
dictionary if hazard_curves_from_gmfs is false
"""
oq = self.oqparam
if not oq.hazard_curves_from_gmfs and not oq.ground_motion_fields:
return
if oq.hazard_curves_from_gmfs:
ClassicalCalculator.post_execute.__func__(self, result)
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# use a different datastore
self.cl = ClassicalCalculator(oq, self.monitor)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(hazard_calculation_id=self.datastore.calc_id)
for imt in self.mean_curves.dtype.fields:
rdiff, index = max_rel_diff_index(
self.cl.mean_curves[imt], self.mean_curves[imt])
logging.warn('Relative difference with the classical '
'mean curves for IMT=%s: %d%% at site index %d',
imt, rdiff * 100, index)
class EventBasedCalculator(base.HazardCalculator):
"""
Event based PSHA calculator generating the ground motion fields and
the hazard curves from the ruptures, depending on the configuration
parameters.
"""
core_task = compute_gmfs
is_stochastic = True
build_ruptures = sample_ruptures
@cached_property
def csm_info(self):
"""
:returns: a cached CompositionInfo object
"""
try:
return self.csm.info
except AttributeError:
return self.datastore.parent['csm_info']
def init(self):
if hasattr(self, 'csm'):
self.check_floating_spinning()
self.rupser = calc.RuptureSerializer(self.datastore)
def init_logic_tree(self, csm_info):
self.grp_trt = csm_info.grp_by("trt")
self.rlzs_assoc = csm_info.get_rlzs_assoc()
self.rlzs_by_gsim_grp = csm_info.get_rlzs_by_gsim_grp()
self.samples_by_grp = csm_info.get_samples_by_grp()
self.num_rlzs_by_grp = {
grp_id:
sum(len(rlzs) for rlzs in self.rlzs_by_gsim_grp[grp_id].values())
for grp_id in self.rlzs_by_gsim_grp
}
self.R = len(self.rlzs_assoc.realizations)
def zerodict(self):
"""
Initial accumulator, a dictionary (grp_id, gsim) -> curves
"""
self.L = len(self.oqparam.imtls.array)
zd = {r: ProbabilityMap(self.L) for r in range(self.R)}
self.E = len(self.datastore['events'])
return zd
def from_sources(self, par):
"""
Prefilter the composite source model and store the source_info
"""
oq = self.oqparam
gsims_by_trt = self.csm.gsim_lt.values
def weight_src(src):
return src.num_ruptures
logging.info('Building ruptures')
smap = parallel.Starmap(self.build_ruptures.__func__,
monitor=self.monitor())
eff_ruptures = AccumDict(accum=0) # grp_id => potential ruptures
calc_times = AccumDict(accum=numpy.zeros(3, F32))
ses_idx = 0
for sm_id, sm in enumerate(self.csm.source_models):
logging.info('Sending %s', sm)
for sg in sm.src_groups:
if not sg.sources:
continue
par['gsims'] = gsims_by_trt[sg.trt]
for block in self.block_splitter(sg.sources, weight_src):
if 'ucerf' in oq.calculation_mode:
for i in range(oq.ses_per_logic_tree_path):
par['ses_seeds'] = [(ses_idx, oq.ses_seed + i + 1)]
smap.submit(block, self.src_filter, par)
ses_idx += 1
else:
smap.submit(block, par, self.src_filter)
mon = self.monitor('saving ruptures')
for dic in smap:
if dic['calc_times']:
calc_times += dic['calc_times']
if dic['eff_ruptures']:
eff_ruptures += dic['eff_ruptures']
if dic['rup_array']:
with mon:
self.rupser.save(dic['rup_array'])
self.rupser.close()
# logic tree reduction, must be called before storing the events
self.store_csm_info(eff_ruptures)
store_rlzs_by_grp(self.datastore)
self.init_logic_tree(self.csm.info)
with self.monitor('store source_info', autoflush=True):
self.store_source_info(calc_times)
logging.info('Reordering the ruptures and storing the events')
attrs = self.datastore.getitem('ruptures').attrs
sorted_ruptures = self.datastore.getitem('ruptures').value
# order the ruptures by serial
sorted_ruptures.sort(order='serial')
self.datastore['ruptures'] = sorted_ruptures
self.datastore.set_attrs('ruptures', **attrs)
rgetters = self.save_events(sorted_ruptures)
return ((rgetter, self.sitecol, par) for rgetter in rgetters)
def get_rupture_getters(self):
"""
:returns: a list of RuptureGetters
"""
dstore = (self.datastore.parent
if self.datastore.parent else self.datastore)
hdf5cache = dstore.hdf5cache()
with hdf5.File(hdf5cache, 'r+') as cache:
if 'rupgeoms' not in cache:
dstore.hdf5.copy('rupgeoms', cache)
rgetters = get_rupture_getters(dstore,
split=self.oqparam.concurrent_tasks,
hdf5cache=hdf5cache)
num_events = self.E if hasattr(self, 'E') else len(dstore['events'])
num_ruptures = len(dstore['ruptures'])
logging.info('Found {:,d} ruptures and {:,d} events'.format(
num_ruptures, num_events))
if self.datastore.parent:
self.datastore.parent.close()
return rgetters
def agg_dicts(self, acc, result):
"""
:param acc: accumulator dictionary
:param result: an AccumDict with events, ruptures, gmfs and hcurves
"""
try:
eid2idx = self.eid2idx
except AttributeError: # first call
eid2idx = self.eid2idx = dict(
zip(self.datastore['events']['eid'], range(self.E)))
sav_mon = self.monitor('saving gmfs')
agg_mon = self.monitor('aggregating hcurves')
with sav_mon:
data = result.pop('gmfdata')
if len(data) == 0:
return acc
idxs = get_idxs(data, eid2idx) # this has to be fast
data['eid'] = idxs # replace eid with idx
self.datastore.extend('gmf_data/data', data)
# it is important to save the number of bytes while the
# computation is going, to see the progress
update_nbytes(self.datastore, 'gmf_data/data', data)
for sid, start, stop in result['indices']:
self.indices[sid, 0].append(start + self.offset)
self.indices[sid, 1].append(stop + self.offset)
self.offset += len(data)
if self.offset >= TWO32:
raise RuntimeError('The gmf_data table has more than %d rows' %
TWO32)
imtls = self.oqparam.imtls
with agg_mon:
for key, poes in result.get('hcurves', {}).items():
r, sid, imt = str2rsi(key)
array = acc[r].setdefault(sid, 0).array[imtls(imt), 0]
array[:] = 1. - (1. - array) * (1. - poes)
sav_mon.flush()
agg_mon.flush()
self.datastore.flush()
return acc
def save_events(self, rup_array):
"""
:param rup_array: an array of ruptures with fields grp_id
:returns: a list of RuptureGetters
"""
# this is very fast compared to saving the ruptures
eids = rupture.get_eids(rup_array, self.samples_by_grp,
self.num_rlzs_by_grp)
self.E = len(eids)
self.check_overflow() # check the number of events
events = numpy.zeros(len(eids), rupture.events_dt)
events['eid'] = eids
self.eid2idx = eid2idx = dict(zip(events['eid'], range(self.E)))
rgetters = self.get_rupture_getters()
# build the associations eid -> rlz in parallel
smap = parallel.Starmap(RuptureGetter.get_eid_rlz,
((rgetter, ) for rgetter in rgetters),
self.monitor('get_eid_rlz'),
progress=logging.debug)
for eid_rlz in smap:
# fast: 30 million of events associated in 1 minute
for eid, rlz in eid_rlz:
events[eid2idx[eid]]['rlz'] = rlz
self.datastore['events'] = events # fast too
return rgetters
def check_overflow(self):
"""
Raise a ValueError if the number of sites is larger than 65,536 or the
number of IMTs is larger than 256 or the number of ruptures is larger
than 4,294,967,296. The limits are due to the numpy dtype used to
store the GMFs (gmv_dt). They could be relaxed in the future.
"""
max_ = dict(events=TWO32, imts=2**8)
E = getattr(self, 'E', 0) # 0 for non event based
num_ = dict(events=E, imts=len(self.oqparam.imtls))
if self.sitecol:
max_['sites'] = min(self.oqparam.max_num_sites, TWO32)
num_['sites'] = len(self.sitecol)
for var in max_:
if num_[var] > max_[var]:
raise ValueError('The event based calculator is restricted to '
'%d %s, got %d' % (max_[var], var, num_[var]))
def execute(self):
oq = self.oqparam
self.offset = 0
self.indices = collections.defaultdict(list) # sid, idx -> indices
self.min_iml = self.get_min_iml(oq)
param = self.param.copy()
param.update(oqparam=oq,
min_iml=self.min_iml,
gmf=oq.ground_motion_fields,
truncation_level=oq.truncation_level,
ruptures_per_block=oq.ruptures_per_block,
imtls=oq.imtls,
filter_distance=oq.filter_distance,
ses_per_logic_tree_path=oq.ses_per_logic_tree_path)
if oq.hazard_calculation_id: # from ruptures
assert oq.ground_motion_fields, 'must be True!'
self.datastore.parent = datastore.read(oq.hazard_calculation_id)
self.init_logic_tree(self.csm_info)
iterargs = ((rgetter, self.sitecol, param)
for rgetter in self.get_rupture_getters())
else: # from sources
iterargs = self.from_sources(param)
if oq.ground_motion_fields is False:
return {}
# call compute_gmfs in parallel
acc = parallel.Starmap(self.core_task.__func__, iterargs,
self.monitor()).reduce(self.agg_dicts,
self.zerodict())
if self.indices:
N = len(self.sitecol.complete)
logging.info('Saving gmf_data/indices')
with self.monitor('saving gmf_data/indices',
measuremem=True,
autoflush=True):
self.datastore['gmf_data/imts'] = ' '.join(oq.imtls)
dset = self.datastore.create_dset('gmf_data/indices',
hdf5.vuint32,
shape=(N, 2),
fillvalue=None)
num_evs = self.datastore.create_dset('gmf_data/events_by_sid',
U32, (N, ))
for sid in self.sitecol.complete.sids:
start = numpy.array(self.indices[sid, 0])
stop = numpy.array(self.indices[sid, 1])
dset[sid, 0] = start
dset[sid, 1] = stop
num_evs[sid] = (stop - start).sum()
avg_events_by_sid = num_evs.value.sum() / N
logging.info('Found ~%d GMVs per site', avg_events_by_sid)
self.datastore.set_attrs('gmf_data',
avg_events_by_sid=avg_events_by_sid,
max_events_by_sid=num_evs.value.max())
elif oq.ground_motion_fields:
raise RuntimeError('No GMFs were generated, perhaps they were '
'all below the minimum_intensity threshold')
return acc
def save_gmf_bytes(self):
"""Save the attribute nbytes in the gmf_data datasets"""
ds = self.datastore
for sm_id in ds['gmf_data']:
ds.set_nbytes('gmf_data/' + sm_id)
ds.set_nbytes('gmf_data')
def post_execute(self, result):
oq = self.oqparam
if not oq.ground_motion_fields:
return
N = len(self.sitecol.complete)
L = len(oq.imtls.array)
if result and oq.hazard_curves_from_gmfs:
rlzs = self.rlzs_assoc.realizations
# compute and save statistics; this is done in process and can
# be very slow if there are thousands of realizations
weights = [rlz.weight for rlz in rlzs]
# NB: in the future we may want to save to individual hazard
# curves if oq.individual_curves is set; for the moment we
# save the statistical curves only
hstats = oq.hazard_stats()
pmaps = list(result.values())
if len(hstats):
logging.info('Computing statistical hazard curves')
if len(weights) != len(pmaps):
# this should never happen, unless I break the
# logic tree reduction mechanism during refactoring
raise AssertionError('Expected %d pmaps, got %d' %
(len(weights), len(pmaps)))
for statname, stat in hstats:
pmap = compute_pmap_stats(pmaps, [stat], weights)
arr = numpy.zeros((N, L), F32)
for sid in pmap:
arr[sid] = pmap[sid].array[:, 0]
self.datastore['hcurves/' + statname] = arr
if oq.poes:
P = len(oq.poes)
I = len(oq.imtls)
self.datastore.create_dset('hmaps/' + statname, F32,
(N, P * I))
self.datastore.set_attrs('hmaps/' + statname,
nbytes=N * P * I * 4)
hmap = calc.make_hmap(pmap, oq.imtls, oq.poes)
ds = self.datastore['hmaps/' + statname]
for sid in hmap:
ds[sid] = hmap[sid].array[:, 0]
if self.datastore.parent:
self.datastore.parent.open('r')
if 'gmf_data' in self.datastore:
self.save_gmf_bytes()
if oq.compare_with_classical: # compute classical curves
export_dir = os.path.join(oq.export_dir, 'cl')
if not os.path.exists(export_dir):
os.makedirs(export_dir)
oq.export_dir = export_dir
# one could also set oq.number_of_logic_tree_samples = 0
self.cl = ClassicalCalculator(oq)
# TODO: perhaps it is possible to avoid reprocessing the source
# model, however usually this is quite fast and do not dominate
# the computation
self.cl.run(close=False)
cl_mean_curves = get_mean_curves(self.cl.datastore)
eb_mean_curves = get_mean_curves(self.datastore)
rdiff, index = util.max_rel_diff_index(cl_mean_curves,
eb_mean_curves)
logging.warn(
'Relative difference with the classical '
'mean curves: %d%% at site index %d', rdiff * 100, index)