def mapmake_full(self, nside, mapname):
def _make_alm(mi):
print("Making %i" % mi)
mmode = self.mmode(mi)
sphmode = self.beamtransfer.project_vector_telescope_to_sky(mi, mmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, list(range(self.telescope.mmax + 1)))
if mpiutil.rank0:
alm = np.zeros(
(
self.telescope.nfreq,
self.telescope.num_pol_sky,
self.telescope.lmax + 1,
self.telescope.lmax + 1,
),
dtype=np.complex128,
)
for mi in range(self.telescope.mmax + 1):
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(self.output_directory + "/" + mapname, "w") as f:
f.create_dataset("/map", data=skymap)
mpiutil.barrier()
def test_io(self):
import h5py
# Cleanup directories
fname = 'testdset.hdf5'
if mpiutil.rank0 and os.path.exists(fname):
os.remove(fname)
mpiutil.barrier()
gshape = (19, 17)
ds = mpiarray.MPIArray(gshape, dtype=np.int64)
ga = np.arange(np.prod(gshape)).reshape(gshape)
l0, s0, e0 = mpiutil.split_local(gshape[0])
ds[:] = ga[s0:e0]
ds.redistribute(axis=1).to_hdf5(fname, 'testds', create=True)
if mpiutil.rank0:
with h5py.File(fname, 'r') as f:
h5ds = f['testds'][:]
assert (h5ds == ga).all()
ds2 = mpiarray.MPIArray.from_hdf5(fname, 'testds')
assert (ds2 == ds).all()
def generate(self, regen=False):
"""Save out all beam transfer matrices to disk.
Parameters
----------
regen : boolean, optional
Force regeneration even if cache files exist (default: False).
"""
self._generate_dirs()
self._generate_teldatafile(regen)
st = time.time()
self._generate_mfiles(regen)
if self.gen_invbeam:
self._generate_invbeam(regen)
et = time.time()
if mpiutil.rank0:
print "***** Beam transfer matrices generation time: %f" % (et - st)
# Save pickled telescope object
if mpiutil.rank0:
print
print '=' * 80
print "=== Saving Telescope object. ==="
with open(self._picklefile, 'w') as f:
pickle.dump(self.telescope, f)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
def setup(self):
"""Get a list of existing processed files."""
# Find processed transit files
self.proc_transits = []
for processed_dir in self.processed_dir:
self.log.debug(
"Looking for processed transits in {}...".format(processed_dir)
)
# Expand path
processed_dir = path.expanduser(processed_dir)
processed_dir = path.expandvars(processed_dir)
try:
processed_files = listdir(processed_dir)
except FileNotFoundError:
processed_files = []
for fname in processed_files:
if not path.splitext(fname)[1] == ".h5":
continue
with ContainerBase.from_file(
fname, ondisk=True, distributed=False, mode="r"
) as fh:
obs_id = fh.attrs.get("observation_id", None)
if obs_id is not None:
self.proc_transits.append(obs_id)
self.log.debug("Found {:d} processed transits.".format(len(self.proc_transits)))
# Query database for observations of this source
hol_obs = None
if mpiutil.rank0:
hol_obs = list(get_holography_obs(self.source))
self.hol_obs = mpiutil.bcast(hol_obs, root=0)
mpiutil.barrier()
def mapmake_svd(self, nside, mapname):
self.generate_mmodes_svd()
def _make_alm(mi):
svdmode = self.mmode_svd(mi)
sphmode = self.beamtransfer.project_vector_svd_to_sky(mi, svdmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, range(self.telescope.mmax + 1))
if mpiutil.rank0:
alm = np.zeros((self.telescope.nfreq, self.telescope.num_pol_sky, self.telescope.lmax + 1,
self.telescope.lmax + 1), dtype=np.complex128)
for mi in range(self.telescope.mmax + 1):
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(self.output_directory + '/' + mapname, 'w') as f:
f.create_dataset('/map', data=skymap)
mpiutil.barrier()
def __init__(self, pipefile=None, feedback=2):
# Read in the parameters.
self.params, self.task_params = parse_ini.parse(pipefile, self.params_init, prefix=self.prefix, return_undeclared=True, feedback=feedback)
self.tasks = self.params['tasks']
# set environment var
os.environ['TL_OUTPUT'] = self.params['outdir'] + '/'
# copy pipefile to outdir if required
if self.params['copy']:
base_name = path.basename(pipefile)
dst_file = '%s/%s' % (self.params['outdir'], base_name)
outdir = output_path(dst_file, relative=False, mkdir=True)
if mpiutil.rank0:
if self.params['overwrite']:
shutil.copy2(pipefile, dst_file)
else:
if not path.exists(dst_file):
shutil.copy2(pipefile, dst_file)
else:
base, ext = path.splitext(dst_file)
for cnt in itertools.count(1):
dst = '%s_%d%s' % (base, cnt, ext) # add cnt to file name
if not path.exists(dst):
shutil.copy2(pipefile, dst)
break
mpiutil.barrier()
def test_misc(self):
dg = memh5.MemDiskGroup(distributed=True)
pdset = dg.create_dataset('parallel_data', shape=(10,), dtype=np.float64, distributed=True, distributed_axis=0)
# pdset[:] = dg._data.comm.rank
pdset[:] = rank
# Test successfully added
self.assertIn('parallel_data', dg)
dg.save(self.fname)
dg2 = memh5.MemDiskGroup.from_file(self.fname, distributed=True)
# Test successful load
self.assertIn('parallel_data', dg2)
self.assertTrue((dg['parallel_data'][:] == dg2['parallel_data'][:]).all())
# self.assertRaises(NotImplementedError, dg.to_disk, self.fname)
# Test refusal to base off a h5py object when distributed
from caput import mpiutil
with h5py.File(self.fname, 'r') as f:
if comm is not None:
self.assertRaises(ValueError, memh5.MemDiskGroup, data_group=f, distributed=True)
mpiutil.barrier()
def finish(self):
#if mpiutil.rank0:
print 'RANK %03d Finishing FGRM' % (mpiutil.rank)
mpiutil.barrier()
for df in self.df_out:
df.close()
def generate(self, regen=False):
"""Perform the KL-transform for all m-modes and save the result.
Uses MPI to distribute the work (if available).
Parameters
----------
mlist : array_like, optional
Set of m's to calculate KL-modes for By default do all m-modes.
"""
if mpiutil.rank0:
st = time.time()
print "======== Starting KL calculation ========"
# Iterate list over MPI processes.
for mi in mpiutil.mpirange(self.telescope.mmax+1):
if os.path.exists(self._evfile % mi) and not regen:
print "m index %i. File: %s exists. Skipping..." % (mi, (self._evfile % mi))
continue
self.transform_save(mi)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
if mpiutil.rank0:
et = time.time()
print "======== Ending KL calculation (time=%f) ========" % (et - st)
# Collect together the eigenvalues
self._collect()
def process(self, ts):
show_progress = self.params['show_progress']
progress_step = self.params['progress_step']
ra_axis = self.map_tmp.get_axis('ra')
dec_axis = self.map_tmp.get_axis('dec')
if mpiutil.rank0:
msg = 'RANK %03d: RA Range [%5.2f, %5.2f] deg'%(
mpiutil.rank, ra_axis.min(), ra_axis.max())
logger.info(msg)
msg = 'RANK %03d: Dec Range [%5.2f, %5.2f] deg\n'%(
mpiutil.rank, dec_axis.min(), dec_axis.max())
logger.info(msg)
if self.params['save_localHI']:
if mpiutil.rank0:
logger.info('save local HI')
freq = ts['freq'][:] - 1420.
local_hi = np.abs(freq) < 1
ts.local_vis_mask[:, local_hi, ...] = False
self.init_output()
if 'ns_on' in ts.iterkeys():
ns = ts['ns_on'].local_data
ts.local_vis_mask[:] += ns[:, None, None, :]
#ns = ts['ns_on'][:]
#ts.vis_mask[:] += ns[:, None, None, :]
func = self.init_ps_datasets(ts)
ts.redistribute('frequency')
vis_var = mpiarray.MPIArray.wrap(np.zeros(ts.vis.local_shape), 1)
axis_order = tuple(xrange(len(ts.vis.shape)))
ts.create_time_ordered_dataset('vis_var', data=vis_var, axis_order=axis_order)
#var = ts['vis_var'][:]
#print mpiutil.rank, var.shape
ts.freq_data_operate(self.init_vis, full_data=True, copy_data=False,
show_progress=show_progress, progress_step=progress_step,
keep_dist_axis=False)
mpiutil.barrier()
#vis_var = ts['vis_var'].local_data
#vis_var = mpiutil.allreduce(vis_var)
#ts['vis_var'][:] = vis_var
#print ts['vis_var'].shape
if not func is None:
#ts.redistribute('time')
ts.redistribute('frequency')
func(self.make_map, full_data=False, copy_data=True,
show_progress=show_progress,
progress_step=progress_step, keep_dist_axis=False)
mpiutil.barrier()
self.df.close()
def generate(self, regen=False):
"""Perform the KL-transform for all m-modes and save the result.
Uses MPI to distribute the work (if available).
Parameters
----------
mlist : array_like, optional
Set of m's to calculate KL-modes for By default do all m-modes.
"""
if mpiutil.rank0:
st = time.time()
print("======== Starting KL calculation ========")
# Iterate list over MPI processes.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
if os.path.exists(self._evfile % mi) and not regen:
print(
"m index %i. File: %s exists. Skipping..."
% (mi, (self._evfile % mi))
)
continue
self.transform_save(mi)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
if mpiutil.rank0:
et = time.time()
print("======== Ending KL calculation (time=%f) ========" % (et - st))
# Collect together the eigenvalues
self._collect()
def mapmake_kl(self, nside, mapname, wiener=False):
mapfile = self.output_directory + "/" + mapname
if os.path.exists(mapfile):
if mpiutil.rank0:
print("File %s exists. Skipping...")
return
kl = self.manager.kltransforms[self.klname]
if not kl.inverse:
raise Exception("Need the inverse to make a meaningful map.")
def _make_alm(mi):
print("Making %i" % mi)
klmode = self.mmode_kl(mi)
if wiener:
evals = kl.evals_m(mi, self.klthreshold)
if evals is not None:
klmode *= evals / (1.0 + evals)
isvdmode = kl.project_vector_kl_to_svd(
mi, klmode, threshold=self.klthreshold
)
sphmode = self.beamtransfer.project_vector_svd_to_sky(mi, isvdmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, list(range(self.telescope.mmax + 1)))
if mpiutil.rank0:
alm = np.zeros(
(
self.telescope.nfreq,
self.telescope.num_pol_sky,
self.telescope.lmax + 1,
self.telescope.lmax + 1,
),
dtype=np.complex128,
)
# Determine whether to use m=0 or not
mlist = list(range(1 if self.no_m_zero else 0, self.telescope.mmax + 1))
for mi in mlist:
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(mapfile, "w") as f:
f.create_dataset("/map", data=skymap)
mpiutil.barrier()
def test_misc(self):
dg = memh5.MemDiskGroup(distributed=True)
pdset = dg.create_dataset('parallel_data', shape=(10,), dtype=np.float64, distributed=True, distributed_axis=0)
# pdset[:] = dg._data.comm.rank
pdset[:] = rank
# Test successfully added
self.assertIn('parallel_data', dg)
dg.save(self.fname)
dg2 = memh5.MemDiskGroup.from_file(self.fname, distributed=True)
# Test successful load
self.assertIn('parallel_data', dg2)
self.assertTrue((dg['parallel_data'][:] == dg2['parallel_data'][:]).all())
# self.assertRaises(NotImplementedError, dg.to_disk, self.fname)
# Test refusal to base off a h5py object when distributed
from caput import mpiutil
with h5py.File(self.fname, 'r') as f:
if comm is not None:
self.assertRaises(ValueError, memh5.MemDiskGroup, data_group=f, distributed=True)
mpiutil.barrier()
def __init__(self, pipefile=None, feedback=2):
# Read in the parameters.
self.params, self.task_params = parse_ini.parse(pipefile, self.params_init, prefix=self.prefix, return_undeclared=True, feedback=feedback)
self.tasks = self.params['tasks']
# timing the running
if self.params['timing']:
self.start_time = datetime.datetime.now()
if mpiutil.rank0:
print 'Start the pipeline at %s...' % self.start_time
# set environment var
os.environ['TL_OUTPUT'] = self.params['outdir'] + '/'
# copy pipefile to outdir if required
if self.params['copy']:
base_name = path.basename(pipefile)
dst_file = '%s/%s' % (self.params['outdir'], base_name)
outdir = output_path(dst_file, relative=False, mkdir=True)
if mpiutil.rank0:
if self.params['overwrite']:
shutil.copy2(pipefile, dst_file)
else:
if not path.exists(dst_file):
shutil.copy2(pipefile, dst_file)
else:
base, ext = path.splitext(dst_file)
for cnt in itertools.count(1):
dst = '%s_%d%s' % (base, cnt, ext) # add cnt to file name
if not path.exists(dst):
shutil.copy2(pipefile, dst)
break
mpiutil.barrier()
def generate_mmodes(self, ts_data=None):
"""Calculate the m-modes corresponding to the Timestream.
Perform an MPI transpose for efficiency.
"""
completed_file = self._mdir + 'COMPLETED_M'
if os.path.exists(completed_file):
if mpiutil.rank0:
print "******* m-files already generated ********"
mpiutil.barrier()
return
# Make directory if required
# if mpiutil.rank0 and not os.path.exists(self._mdir):
# os.makedirs(self._mdir)
try:
os.makedirs(self._mdir)
except OSError:
# directory exists
pass
tel = self.telescope
mmax = tel.mmax
ntime = ts_data.shape[0] if ts_data is not None else self.ntime
nbl = tel.nbase
nfreq = tel.nfreq
indices = list(itertools.product(np.arange(nfreq), np.arange(nbl)))
lind, sind, eind = mpiutil.split_local(nfreq * nbl)
# load the local section of the time stream
tstream = np.zeros((ntime, lind), dtype=np.complex128)
for ind, (f_ind, bl_ind) in enumerate(indices[sind:eind]):
if ts_data is not None:
tstream[:, ind] = ts_data[:, f_ind, bl_ind]
else:
with h5py.File(self._tsfile, 'r') as f:
tstream[:, ind] = f['/timestream'][:, f_ind, bl_ind]
# FFT to get m-mode
mmodes = np.fft.fft(tstream, axis=0) / ntime # m = 0 is at left
mmodes = MPIArray.wrap(mmodes, axis=1)
# redistribute along different m
mmodes = mmodes.redistribute(axis=0)
# save m-modes to file
ms = np.concatenate([np.arange(0, mmax+1), np.arange(-mmax, 0)])
for ind, mi in enumerate(mpiutil.mpilist(ms, method='con')):
with h5py.File(self._mfile(mi), 'w') as f:
f.create_dataset('/mmode', data=mmodes[ind].view(np.ndarray).reshape(nfreq, nbl))
f.attrs['m'] = mi
mpiutil.barrier()
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(completed_file, 'a').close()
def process(self, tstream):
bt = tstream.beamtransfer
tel = bt.telescope
mmode_dir = tstream.output_directory + '/mmodes'
count_file = mmode_dir + '/count.hdf5'
if os.path.exists(count_file):
# get count
with h5py.File(count_file, 'r') as f:
N = f['count'][:]
# normalize mmode
for mi in mpiutil.mpirange(tel.mmax + 1):
with h5py.File(tstream._mfile(mi), 'r+') as f:
f['/mmode'][:] /= N[:, np.newaxis, :]
mpiutil.barrier()
# delete the count file
if mpiutil.rank0:
os.remove(count_file)
else:
if mpiutil.rank0:
print 'Count file %s does not exist, do noting...' % count_file
# mpiutil.barrier()
return tstream
def generate_mmodes(self):
"""Calculate the m-modes corresponding to the Timestream.
Perform an MPI transpose for efficiency.
"""
if os.path.exists(self.output_directory + "/mmodes/COMPLETED_M"):
if mpiutil.rank0:
print "******* m-files already generated ********"
return
tel = self.telescope
mmax = tel.mmax
nfreq = tel.nfreq
lfreq, sfreq, efreq = mpiutil.split_local(nfreq)
lm, sm, em = mpiutil.split_local(mmax + 1)
# Load in the local frequencies of the time stream
tstream = np.zeros((lfreq, tel.npairs, self.ntime),
dtype=np.complex128)
for lfi, fi in enumerate(range(sfreq, efreq)):
tstream[lfi] = self.timestream_f(fi)
# FFT to calculate the m-modes for the timestream
row_mmodes = np.fft.fft(tstream, axis=-1) / self.ntime
## Combine positive and negative m parts.
row_mpairs = np.zeros((lfreq, 2, tel.npairs, mmax + 1),
dtype=np.complex128)
row_mpairs[:, 0, ..., 0] = row_mmodes[..., 0]
for mi in range(1, mmax + 1):
row_mpairs[:, 0, ..., mi] = row_mmodes[..., mi]
row_mpairs[:, 1, ..., mi] = row_mmodes[..., -mi].conj()
# Transpose to get the entirety of an m-mode on each process (i.e. all frequencies)
col_mmodes = mpiutil.transpose_blocks(row_mpairs,
(nfreq, 2, tel.npairs, mmax + 1))
# Transpose the local section to make the m's first
col_mmodes = np.transpose(col_mmodes, (3, 0, 1, 2))
for lmi, mi in enumerate(range(sm, em)):
# Make directory for each m-mode
if not os.path.exists(self._mdir(mi)):
os.makedirs(self._mdir(mi))
# Create the m-file and save the result.
with h5py.File(self._mfile(mi), 'w') as f:
f.create_dataset('/mmode', data=col_mmodes[lmi])
f.attrs['m'] = mi
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(self.output_directory + "/mmodes/COMPLETED_M", 'a').close()
mpiutil.barrier()
def generate_mmodes_kl(self):
"""Generate the KL modes for the Timestream.
"""
kl = self.manager.kltransforms[self.klname]
# Iterate over local m's, project mode and save to disk.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
if os.path.exists(self._klfile(mi)):
print "File %s exists. Skipping..." % self._klfile(mi)
continue
svdm = self.mmode_svd(
mi) #.reshape(self.telescope.nfreq, 2*self.telescope.npairs)
#svdm = self.beamtransfer.project_vector_telescope_to_svd(mi, tm)
klm = kl.project_vector_svd_to_kl(mi,
svdm,
threshold=self.klthreshold)
with h5py.File(self._klfile(mi), 'w') as f:
f.create_dataset('mmode_kl', data=klm)
f.attrs['m'] = mi
mpiutil.barrier()
def mapmake_svd(self, nside, mapname):
self.generate_mmodes_svd()
def _make_alm(mi):
svdmode = self.mmode_svd(mi)
sphmode = self.beamtransfer.project_vector_svd_to_sky(mi, svdmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm,
range(self.telescope.mmax + 1))
if mpiutil.rank0:
alm = np.zeros((self.telescope.nfreq, self.telescope.num_pol_sky,
self.telescope.lmax + 1, self.telescope.lmax + 1),
dtype=np.complex128)
for mi in range(self.telescope.mmax + 1):
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(self.output_directory + '/' + mapname, 'w') as f:
f.create_dataset('/map', data=skymap)
f.attrs['frequency'] = self.beamtransfer.telescope.frequencies
f.attrs['polarization'] = np.array(
['I', 'Q', 'U',
'V'])[:self.beamtransfer.telescope.num_pol_sky]
mpiutil.barrier()
def generate_mmodes(self):
"""Calculate the m-modes corresponding to the Timestream.
Perform an MPI transpose for efficiency.
"""
if os.path.exists(self.output_directory + "/mmodes/COMPLETED_M"):
if mpiutil.rank0:
print "******* m-files already generated ********"
return
tel = self.telescope
mmax = tel.mmax
nfreq = tel.nfreq
lfreq, sfreq, efreq = mpiutil.split_local(nfreq)
lm, sm, em = mpiutil.split_local(mmax + 1)
# Load in the local frequencies of the time stream
tstream = np.zeros((lfreq, tel.npairs, self.ntime), dtype=np.complex128)
for lfi, fi in enumerate(range(sfreq, efreq)):
tstream[lfi] = self.timestream_f(fi)
# FFT to calculate the m-modes for the timestream
row_mmodes = np.fft.fft(tstream, axis=-1) / self.ntime
## Combine positive and negative m parts.
row_mpairs = np.zeros((lfreq, 2, tel.npairs, mmax+1), dtype=np.complex128)
row_mpairs[:, 0, ..., 0] = row_mmodes[..., 0]
for mi in range(1, mmax+1):
row_mpairs[:, 0, ..., mi] = row_mmodes[..., mi]
row_mpairs[:, 1, ..., mi] = row_mmodes[..., -mi].conj()
# Transpose to get the entirety of an m-mode on each process (i.e. all frequencies)
col_mmodes = mpiutil.transpose_blocks(row_mpairs, (nfreq, 2, tel.npairs, mmax + 1))
# Transpose the local section to make the m's first
col_mmodes = np.transpose(col_mmodes, (3, 0, 1, 2))
for lmi, mi in enumerate(range(sm, em)):
# Make directory for each m-mode
if not os.path.exists(self._mdir(mi)):
os.makedirs(self._mdir(mi))
# Create the m-file and save the result.
with h5py.File(self._mfile(mi), 'w') as f:
f.create_dataset('/mmode', data=col_mmodes[lmi])
f.attrs['m'] = mi
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(self.output_directory + "/mmodes/COMPLETED_M", 'a').close()
mpiutil.barrier()
def separator(sec, tag):
# sleep, sync, and flush to avoid output of different parts being mixed
time.sleep(sec)
mpiutil.barrier()
sys.stdout.flush()
if rank == 0:
print
print '-' * 35 + ' ' + tag + ' ' + '-' * 35
def powerspectrum(self):
import scipy.linalg as la
if os.path.exists(self._psfile):
print "File %s exists. Skipping..." % self._psfile
return
ps = self.manager.psestimators[self.psname]
ps.genbands()
def _q_estimate(mi):
return ps.q_estimator(mi, self.mmode_kl(mi))
# Determine whether to use m=0 or not
mlist = range(1 if self.no_m_zero else 0, self.telescope.mmax + 1)
qvals = mpiutil.parallel_map(_q_estimate, mlist)
qtotal = np.array(qvals).sum(axis=0)
fisher, bias = ps.fisher_bias()
powerspectrum = np.dot(la.inv(fisher), qtotal - bias)
if mpiutil.rank0:
with h5py.File(self._psfile, 'w') as f:
cv = la.inv(fisher)
err = cv.diagonal()**0.5
cr = cv / np.outer(err, err)
f.create_dataset('fisher/', data=fisher)
# f.create_dataset('bias/', data=self.bias)
f.create_dataset('covariance/', data=cv)
f.create_dataset('error/', data=err)
f.create_dataset('correlation/', data=cr)
f.create_dataset('bandpower/', data=ps.band_power)
#f.create_dataset('k_start/', data=ps.k_start)
#f.create_dataset('k_end/', data=ps.k_end)
#f.create_dataset('k_center/', data=ps.k_center)
#f.create_dataset('psvalues/', data=ps.psvalues)
f.create_dataset('powerspectrum', data=powerspectrum)
# Delete cache of bands for memory reasons
del ps.clarray
ps.clarray = None
mpiutil.barrier()
return powerspectrum
def powerspectrum(self):
import scipy.linalg as la
if os.path.exists(self._psfile):
print "File %s exists. Skipping..." % self._psfile
return
ps = self.manager.psestimators[self.psname]
ps.genbands()
def _q_estimate(mi):
return ps.q_estimator(mi, self.mmode_kl(mi))
# Determine whether to use m=0 or not
mlist = range(1 if self.no_m_zero else 0, self.telescope.mmax + 1)
qvals = mpiutil.parallel_map(_q_estimate, mlist)
qtotal = np.array(qvals).sum(axis=0)
fisher, bias = ps.fisher_bias()
powerspectrum = np.dot(la.inv(fisher), qtotal - bias)
if mpiutil.rank0:
with h5py.File(self._psfile, 'w') as f:
cv = la.inv(fisher)
err = cv.diagonal()**0.5
cr = cv / np.outer(err, err)
f.create_dataset('fisher/', data=fisher)
# f.create_dataset('bias/', data=self.bias)
f.create_dataset('covariance/', data=cv)
f.create_dataset('error/', data=err)
f.create_dataset('correlation/', data=cr)
f.create_dataset('bandpower/', data=ps.band_power)
#f.create_dataset('k_start/', data=ps.k_start)
#f.create_dataset('k_end/', data=ps.k_end)
#f.create_dataset('k_center/', data=ps.k_center)
#f.create_dataset('psvalues/', data=ps.psvalues)
f.create_dataset('powerspectrum', data=powerspectrum)
# Delete cache of bands for memory reasons
del ps.clarray
ps.clarray = None
mpiutil.barrier()
return powerspectrum
def show_params(cls):
"""Show all parameters that can be set and their default values."""
if mpiutil.rank0:
print 'Parameters of %s:' % cls.__name__
for key, val in cls.params_init.items():
print '%s: %s' % (key, val)
print
mpiutil.barrier()
def show_params(cls):
"""Show all parameters that can be set and their default values."""
if mpiutil.rank0:
print 'Parameters of %s:' % cls.__name__
for key, val in cls.params_init.items():
print '%s: %s' % (key, val)
print
mpiutil.barrier()
def mapmake_kl(self, nside, mapname, wiener=False):
mapfile = self.output_directory + '/' + mapname
if os.path.exists(mapfile):
if mpiutil.rank0:
print "File %s exists. Skipping..."
return
kl = self.manager.kltransforms[self.klname]
if not kl.inverse:
raise Exception("Need the inverse to make a meaningful map.")
def _make_alm(mi):
print "Making %i" % mi
klmode = self.mmode_kl(mi)
if wiener:
evals = kl.evals_m(mi, self.klthreshold)
if evals is not None:
klmode *= (evals / (1.0 + evals))
isvdmode = kl.project_vector_kl_to_svd(mi, klmode, threshold=self.klthreshold)
sphmode = self.beamtransfer.project_vector_svd_to_sky(mi, isvdmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, range(self.telescope.mmax + 1))
if mpiutil.rank0:
alm = np.zeros((self.telescope.nfreq, self.telescope.num_pol_sky, self.telescope.lmax + 1,
self.telescope.lmax + 1), dtype=np.complex128)
# Determine whether to use m=0 or not
mlist = range(1 if self.no_m_zero else 0, self.telescope.mmax + 1)
for mi in mlist:
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(mapfile, 'w') as f:
f.create_dataset('/map', data=skymap)
f.attrs['frequency'] = self.beamtransfer.telescope.frequencies
f.attrs['polarization'] = np.array(['I', 'Q', 'U', 'V'])[:self.beamtransfer.telescope.num_pol_sky]
mpiutil.barrier()
def show_params(cls):
"""Show all parameters that can be set and their default values of this task."""
if mpiutil.rank0:
# get all params that has merged params of the all super classes
all_params = cls._get_params()
print 'Parameters of task %s:' % cls.__name__
for key, val in all_params.items():
print '%s: %s' % (key, val)
print
mpiutil.barrier()
def show_params(cls):
"""Show all parameters that can be set and their default values of this task."""
if mpiutil.rank0:
# get all params that has merged params of the all super classes
all_params = cls._get_params()
print 'Parameters of task %s:' % cls.__name__
for key, val in all_params.items():
print '%s: %s' % (key, val)
print
mpiutil.barrier()
def mapmake_kl(self, nside, mapname, wiener=False):
mapfile = self.output_directory + '/' + mapname
if os.path.exists(mapfile):
if mpiutil.rank0:
print "File %s exists. Skipping..."
return
kl = self.manager.kltransforms[self.klname]
if not kl.inverse:
raise Exception("Need the inverse to make a meaningful map.")
def _make_alm(mi):
print "Making %i" % mi
klmode = self.mmode_kl(mi)
if wiener:
evals = kl.evals_m(mi, self.klthreshold)
if evals is not None:
klmode *= (evals / (1.0 + evals))
isvdmode = kl.project_vector_kl_to_svd(mi, klmode, threshold=self.klthreshold)
sphmode = self.beamtransfer.project_vector_svd_to_sky(mi, isvdmode)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, range(self.telescope.mmax + 1), root=0, method='rand')
if mpiutil.rank0:
alm = np.zeros((self.telescope.nfreq, self.telescope.num_pol_sky, self.telescope.lmax + 1,
self.telescope.lmax + 1), dtype=np.complex128)
# Determine whether to use m=0 or not
mlist = range(1 if self.no_m_zero else 0, self.telescope.mmax + 1)
for mi in mlist:
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(mapfile, 'w') as f:
f.create_dataset('/map', data=skymap)
f.attrs['frequency'] = self.beamtransfer.telescope.frequencies
f.attrs['polarization'] = np.array(['I', 'Q', 'U', 'V'])[:self.beamtransfer.telescope.num_pol_sky]
mpiutil.barrier()
def __init__(self, bt, subdir=None):
self.beamtransfer = bt
self.telescope = self.beamtransfer.telescope
subdir = "ev" if subdir is None else subdir
# Create directory if required
self.evdir = self.beamtransfer.directory + "/" + subdir
if mpiutil.rank0 and not os.path.exists(self.evdir):
os.makedirs(self.evdir)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
def __init__(self, bt, subdir=None):
self.beamtransfer = bt
self.telescope = self.beamtransfer.telescope
subdir = "ev" if subdir is None else subdir
# Create directory if required
self.evdir = self.beamtransfer.directory + "/" + subdir
if mpiutil.rank0 and not os.path.exists(self.evdir):
os.makedirs(self.evdir)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
def to_hdf5(self, filename, dataset, create=False):
"""Parallel write into a contiguous HDF5 dataset.
Parameters
----------
filename : str
File to write dataset into.
dataset : string
Name of dataset to write into. Should not exist.
"""
## Naive non-parallel implementation to start
import h5py
if self.comm is None or self.comm.rank == 0:
with h5py.File(filename, 'a' if create else 'r+') as fh:
if dataset in fh:
raise Exception("Dataset should not exist.")
fh.create_dataset(dataset, self.global_shape, dtype=self.dtype)
fh[dataset][:] = np.array(0.0).astype(self.dtype)
# wait until all processes see the created file
while not os.path.exists(filename):
time.sleep(1)
# self._comm.Barrier()
mpiutil.barrier(comm=self.comm)
if self.axis == 0:
dist_arr = self
else:
dist_arr = self.redistribute(axis=0)
size = 1 if self.comm is None else self.comm.size
for ri in range(size):
rank = 0 if self.comm is None else self.comm.rank
if ri == rank:
with h5py.File(filename, 'r+') as fh:
start = dist_arr.local_offset[0]
end = start + dist_arr.local_shape[0]
fh[dataset][start:end] = dist_arr
# dist_arr._comm.Barrier()
mpiutil.barrier(comm=self.comm)
def mapmake_full(self, nside, mapname, nbin=None, dirty=False, method='svd', normalize=True, threshold=1.0e3):
nfreq = self.telescope.nfreq
if nbin is not None and (nbin <= 0 or nbin >= nfreq): # invalid nbin
nbin = None
def _make_alm(mi):
print "Making %i" % mi
mmode = self.mmode(mi)
if dirty:
sphmode = self.beamtransfer.project_vector_backward_dirty(mi, mmode, nbin, normalize, threshold)
else:
if method == 'svd':
sphmode = self.beamtransfer.project_vector_telescope_to_sky(mi, mmode, nbin)
elif method == 'tk':
sphmode = self.beamtransfer.project_vector_telescope_to_sky_tk(mi, mmode, nbin)
else:
raise ValueError('Unknown map-making method %s' % method)
return sphmode
alm_list = mpiutil.parallel_map(_make_alm, range(self.telescope.mmax + 1))
if mpiutil.rank0:
# get center freq of each bin
if nbin is not None:
n, s, e = mpiutil.split_m(nfreq, nbin)
cfreqs = np.array([ self.beamtransfer.telescope.frequencies[(s[i]+e[i])/2] for i in range(nbin) ])
else:
nbin = nfreq
cfreqs = self.beamtransfer.telescope.frequencies
alm = np.zeros((nbin, self.telescope.num_pol_sky, self.telescope.lmax + 1,
self.telescope.lmax + 1), dtype=np.complex128)
for mi in range(self.telescope.mmax + 1):
alm[..., mi] = alm_list[mi]
skymap = hputil.sphtrans_inv_sky(alm, nside)
with h5py.File(self.output_directory + '/' + mapname, 'w') as f:
f.create_dataset('/map', data=skymap)
f.attrs['frequency'] = cfreqs
f.attrs['polarization'] = np.array(['I', 'Q', 'U', 'V'])[:self.beamtransfer.telescope.num_pol_sky]
mpiutil.barrier()
def finish(self):
mpiutil.barrier()
if mpiutil.rank0:
#for ii in self.HI_mock_ids:
for ii in range(self.mock_n):
norm = self.df_out[ii]['count_map'][:]
hist = self.df_out[ii]['dirty_map'][:]
norm[norm == 0] = np.inf
self.df_out[ii]['clean_map'][:] = hist / norm
print 'Finishing CleanMapMaking.'
mpiutil.barrier()
super(SurveySimToMap, self).finish()
def read_process_write(self, input):
"""Reads input, executes any processing and writes output."""
# Read input if needed.
if input is None and not self._no_input:
if self.input_files is None or len(self.input_files) == 0:
if mpiutil.rank0:
msg = 'No file to read from, will stop then...'
logger.info(msg)
self.stop_iteration(True)
return None
if mpiutil.rank0:
msg = "%s reading data from files:" % self.__class__.__name__
for input_file in self.input_files:
msg += '\n\t%s' % input_file
logger.info(msg)
mpiutil.barrier()
input = self.read_input()
# Analyze.
if self._no_input:
if not input is None:
# This should never happen. Just here to catch bugs.
raise RuntimeError("Somehow `input` was set")
output = self.process()
else:
if input is None:
output = None
else:
output = self.process(input)
# Write output if needed.
if output is not None and len(self.output_files) != 0:
if mpiutil.rank0:
msg = "%s writing data to files:" % self.__class__.__name__
# make output dirs
for output_file in self.output_files:
msg += '\n\t%s' % output_file
output_dir = path.dirname(output_file)
if not path.exists(output_dir):
os.makedirs(output_dir)
logger.info(msg)
mpiutil.barrier()
self.write_output(output)
return output
def to_hdf5(self, filename, dataset, create=False):
"""Parallel write into a contiguous HDF5 dataset.
Parameters
----------
filename : str
File to write dataset into.
dataset : string
Name of dataset to write into. Should not exist.
"""
## Naive non-parallel implementation to start
import h5py
if self.comm is None or self.comm.rank == 0:
with h5py.File(filename, 'a' if create else 'r+') as fh:
if dataset in fh:
raise Exception("Dataset should not exist.")
fh.create_dataset(dataset, self.global_shape, dtype=self.dtype)
fh[dataset][:] = np.array(0.0).astype(self.dtype)
# wait until all processes see the created file
while not os.path.exists(filename):
time.sleep(1)
# self._comm.Barrier()
mpiutil.barrier(comm=self.comm)
if self.axis == 0:
dist_arr = self
else:
dist_arr = self.redistribute(axis=0)
size = 1 if self.comm is None else self.comm.size
for ri in range(size):
rank = 0 if self.comm is None else self.comm.rank
if ri == rank:
with h5py.File(filename, 'r+') as fh:
start = dist_arr.local_offset[0]
end = start + dist_arr.local_shape[0]
fh[dataset][start:end] = dist_arr
# dist_arr._comm.Barrier()
mpiutil.barrier(comm=self.comm)
def _generate_dirs(self):
## Create all the directories required to store the beam transfers.
if mpiutil.rank0:
# Create main directory for beamtransfer
if not os.path.exists(self.directory):
os.makedirs(self.directory)
# Create directories for m beams
if not os.path.exists(self._mdir):
os.makedirs(self._mdir)
if self.gen_invbeam and not os.path.exists(self._inv_mdir):
os.makedirs(self._inv_mdir)
mpiutil.barrier()
def generate_mmodes_svd(self):
"""Generate the SVD modes for the Timestream."""
# Iterate over local m's, project mode and save to disk.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
if os.path.exists(self._svdfile(mi)):
print("File %s exists. Skipping..." % self._svdfile(mi))
continue
tm = self.mmode(mi).reshape(self.telescope.nfreq, 2 * self.telescope.npairs)
svdm = self.beamtransfer.project_vector_telescope_to_svd(mi, tm)
with h5py.File(self._svdfile(mi), "w") as f:
f.create_dataset("mmode_svd", data=svdm)
f.attrs["m"] = mi
mpiutil.barrier()
def generate_mmodes_svd(self):
"""Generate the SVD modes for the Timestream.
"""
# Iterate over local m's, project mode and save to disk.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
if os.path.exists(self._svdfile(mi)):
print "File %s exists. Skipping..." % self._svdfile(mi)
continue
tm = self.mmode(mi).reshape(self.telescope.nfreq, 2*self.telescope.npairs)
svdm = self.beamtransfer.project_vector_telescope_to_svd(mi, tm)
with h5py.File(self._svdfile(mi), 'w') as f:
f.create_dataset('mmode_svd', data=svdm)
f.attrs['m'] = mi
mpiutil.barrier()
def read_process_write(self, input):
"""Reads input, executes any processing and writes output."""
# Read input if needed.
if input is None and not self._no_input:
if len(self.input_files) == 0:
raise RuntimeError('No file to read from')
if mpiutil.rank0:
msg = "%s reading data from files:" % self.__class__.__name__
for input_file in self.input_files:
msg += '\n\t%s' % input_file
logger.info(msg)
mpiutil.barrier()
input = self.read_input()
# Analyse.
if self._no_input:
if not input is None:
# This should never happen. Just here to catch bugs.
raise RuntimeError("Somehow `input` was set")
output = self.process()
else:
output = self.process(input)
# Write output if needed.
if output is not None and len(self.output_files) != 0:
if mpiutil.rank0:
msg = "%s writing data to files:" % self.__class__.__name__
# make output dirs
for output_file in self.output_files:
msg += '\n\t%s' % output_file
output_dir = path.dirname(output_file)
if not path.exists(output_dir):
os.makedirs(output_dir)
logger.info(msg)
mpiutil.barrier()
self.write_output(output)
return output
def _save_checkpoint(self):
if self.checkpoint:
# Create a tag for the output file name
tag = self.stack.attrs[
'tag'] if 'tag' in self.stack.attrs else 'stack'
# Construct the filename
outfile = self.output_root + str(tag) + '.h5'
# Expand any variables in the path
outfile = os.path.expanduser(outfile)
outfile = os.path.expandvars(outfile)
# If the output file already exists, then we would like to
# rename it temporarily while writing the contents of the stack.
# We do not want to lose our progress if the job ends while writing.
if mpiutil.rank0:
delete_temp = False
if os.path.isfile(outfile):
tempfile = list(os.path.splitext(outfile))
tempfile.insert(-1, '_temp')
tempfile = ''.join(tempfile)
shutil.move(outfile, tempfile)
delete_temp = True
mpiutil.barrier()
# Save checkpoint
self.write_output(outfile, self.stack)
# Finished writing stack to disk!
# If necessary, delete temporary file.
if mpiutil.rank0 and delete_temp:
os.remove(tempfile)
mpiutil.barrier()
def process(self, input):
def _indx_f(x, shp):
if x >= np.prod(shp): return
_i = [
int(x / np.prod(shp[1:])),
]
for i in range(1, len(shp)):
x -= _i[i - 1] * np.prod(shp[i:])
_i += [
int(x / np.prod(shp[i + 1:])),
]
return tuple(_i)
diag_cov = self.params['diag_cov']
threshold = self.params['threshold']
task_n = np.prod(self.map_shp[:-2])
for task_ind in mpiutil.mpirange(task_n):
indx = _indx_f(task_ind, self.map_shp[:-2])
#print mpiutil.rank, indx
print "RANK%03d: (" % mpiutil.rank + ("%04d, " *
len(indx)) % indx + ")"
map_shp = self.map_shp[-2:]
_dirty_map = np.zeros(map_shp, dtype=__dtype__)
if diag_cov:
_cov_inv = np.zeros(map_shp, dtype=__dtype__)
else:
_cov_inv = np.zeros(map_shp * 2, dtype=__dtype__)
for ii, df in enumerate(self.df_in):
_dirty_map += df['dirty_map'][indx + (slice(None), )]
self.read_block_from_dset(ii, 'cov_inv', indx, _cov_inv)
#_cov_inv += df['cov_inv'][indx + (slice(None), )]
self.df_out[-1]['dirty_map'][indx + (slice(None), )] = _dirty_map
clean_map, noise_diag = make_cleanmap(_dirty_map, _cov_inv,
diag_cov, threshold)
self.df_out[-1]['clean_map'][indx + (slice(None), )] = clean_map
self.df_out[-1]['noise_diag'][indx + (slice(None), )] = noise_diag
del _cov_inv
gc.collect()
mpiutil.barrier()
def _generate_teldatafile(self, regen=False):
if mpiutil.rank0:
if os.path.exists(self._tel_datafile) and not regen:
print
print '=' * 80
print 'File %s exists. Skipping...' % self._tel_datafile
else:
print
print '=' * 80
print 'Crreate telescope data file %s...' % self._tel_datafile
with h5py.File(self._tel_datafile, 'w') as f:
f.create_dataset('baselines', data=self.telescope.baselines)
f.create_dataset('frequencies', data=self.telescope.frequencies)
f.create_dataset('uniquepairs', data=self.telescope.uniquepairs)
f.create_dataset('allpairs', data=self.telescope.allpairs)
f.create_dataset('redundancy', data=self.telescope.redundancy)
mpiutil.barrier()
def next(self):
if self.iter == self.iter_num:
mpiutil.barrier()
#self.close_outputfiles()
super(CubeSim, self).next()
print "rank %03d, %03d" % (mpiutil.rank, self.iter_list[self.iter])
self.realize_simulation()
if 'delta' in self.outfiles:
self.make_delta_sim()
if 'optsim' in self.outfiles:
self.make_optical_sim()
if 'withbeam' in self.outfiles:
self.convolve_by_beam()
self.write_to_file()
self.write_to_file_splitmock()
self.iter += 1
def __init__(self, directory, telescope=None, gen_invbeam=True, noise_weight=True):
self.directory = directory
self.telescope = telescope
self.gen_invbeam = gen_invbeam
self.noise_weight = noise_weight
# Create directory if required
if mpiutil.rank0 and not os.path.exists(directory):
os.makedirs(directory)
mpiutil.barrier()
if self.telescope == None and mpiutil.rank0:
print "Attempting to read telescope from disk..."
try:
f = open(self._picklefile, 'r')
self.telescope = pickle.load(f)
except IOError, UnpicklingError:
raise Exception("Could not load Telescope object from disk.")
def __init__(self, kltrans, subdir="ps"):
"""Initialise a PS estimator class.
Parameters
----------
kltrans : KLTransform
The KL Transform filter to use.
subdir : string, optional
Subdirectory of the KLTransform directory to store results in.
Default is 'ps'.
"""
self.kltrans = kltrans
self.telescope = kltrans.telescope
self.psdir = self.kltrans.evdir + "/" + subdir + "/"
if mpiutil.rank0 and not os.path.exists(self.psdir):
os.makedirs(self.psdir)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
def fake_kl_data(self):
kl = self.manager.kltransforms[self.klname]
# Iterate over local m's, project mode and save to disk.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
evals = kl.evals_m(mi)
if evals is None:
klmode = np.array([], dtype=np.complex128)
else:
modeamp = ((evals + 1.0) / 2.0)**0.5
klmode = modeamp * (np.array([1.0, 1.0J]) * np.random.standard_normal((modeamp.shape[0], 2))).sum(axis=1)
with h5py.File(self._klfile(mi), 'w') as f:
f.create_dataset('mmode_kl', data=klmode)
f.attrs['m'] = mi
mpiutil.barrier()
def __init__(self, kltrans, subdir="ps"):
"""Initialise a PS estimator class.
Parameters
----------
kltrans : KLTransform
The KL Transform filter to use.
subdir : string, optional
Subdirectory of the KLTransform directory to store results in.
Default is 'ps'.
"""
self.kltrans = kltrans
self.telescope = kltrans.telescope
self.psdir = self.kltrans.evdir + '/' + subdir + '/'
if mpiutil.rank0 and not os.path.exists(self.psdir):
os.makedirs(self.psdir)
# If we're part of an MPI run, synchronise here.
mpiutil.barrier()
def collect_m_arrays(mlist, func, shapes, dtype):
data = [ (mi, func(mi)) for mi in mpiutil.partition_list_mpi(mlist) ]
mpiutil.barrier()
if mpiutil.rank0 and mpiutil.size == 1:
p_all = [data]
else:
p_all = mpiutil.world.gather(data, root=0)
mpiutil.barrier() # Not sure if this barrier really does anything,
# but hoping to stop collect breaking
marrays = None
if mpiutil.rank0:
marrays = [np.zeros((len(mlist),) + shape, dtype=dtype) for shape in shapes]
for p_process in p_all:
for mi, result in p_process:
for si in range(len(shapes)):
if result[si] is not None:
marrays[si][mi] = result[si]
mpiutil.barrier()
return marrays
def _generate_invbeam(self, regen=False):
completed_file = self._inv_mdir + 'COMPLETED_IBEAM'
if os.path.exists(completed_file) and not regen:
if mpiutil.rank0:
print
print '=' * 80
print "******* Inverse beam transfer m-files already generated ********"
mpiutil.barrier()
return
if mpiutil.rank0:
print
print '=' * 80
print 'Create inverse beam transfer m-files...'
st = time.time()
mmax = self.telescope.mmax
for mi in mpiutil.mpilist(range(mmax+1)):
inv_beam, W1 = self.compute_invbeam_m(mi)
# save to file
with h5py.File(self._inv_mfile(mi), 'w') as f:
f.create_dataset('ibeam_m', data=inv_beam)
f.create_dataset('W1_m', data=W1)
f.attrs['m'] = mi
mpiutil.barrier()
et = time.time()
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(completed_file, 'a').close()
# Print out timing
print "=== Create inverse beam transfer m-files took %f s ===" % (et - st)
def generate_mmodes_kl(self):
"""Generate the KL modes for the Timestream.
"""
kl = self.manager.kltransforms[self.klname]
# Iterate over local m's, project mode and save to disk.
for mi in mpiutil.mpirange(self.telescope.mmax + 1):
if os.path.exists(self._klfile(mi)):
print "File %s exists. Skipping..." % self._klfile(mi)
continue
svdm = self.mmode_svd(mi) #.reshape(self.telescope.nfreq, 2*self.telescope.npairs)
#svdm = self.beamtransfer.project_vector_telescope_to_svd(mi, tm)
klm = kl.project_vector_svd_to_kl(mi, svdm, threshold=self.klthreshold)
with h5py.File(self._klfile(mi), 'w') as f:
f.create_dataset('mmode_kl', data=klm)
f.attrs['m'] = mi
mpiutil.barrier()
def simulate(beamtransfer, outdir, tsname, maps=[], ndays=None, resolution=0, add_noise=True, seed=None, **kwargs):
"""Create a simulated timestream and save it to disk.
Parameters
----------
beamtransfer : fmmode.core.beamtransfer.BeamTransfer
BeamTransfer object containing the analysis products.
outdir : directoryname
Directory that we will save the timestream into.
maps : list
List of map filenames. The sum of these form the simulated sky.
ndays : int, optional
Number of days of observation. Setting `ndays = None` (default) uses
the default stored in the telescope object; `ndays = 0`, assumes the
observation time is infinite so that the noise is zero.
resolution : scalar, optional
Approximate time resolution in seconds. Setting `resolution = 0`
(default) calculates the value from the mmax.
add_noise : bool, optional
Weather to add random noise to the simulated visibilities. Default True.
Returns
-------
timestream : Timestream
"""
# Create timestream object
tstream = Timestream(outdir, tsname, beamtransfer)
completed_file = tstream._tsdir + '/COMPLETED_TIMESTREAM'
if os.path.exists(completed_file):
if mpiutil.rank0:
print "******* timestream-files already generated ********"
mpiutil.barrier()
return tstream
# Make directory if required
try:
os.makedirs(tstream._tsdir)
except OSError:
# directory exists
pass
if mpiutil.rank0:
# if not os.path.exists(tstream._tsdir):
# os.makedirs(tstream._tsdir)
tstream.save()
## Read in telescope system
bt = beamtransfer
tel = bt.telescope
lmax = tel.lmax
mmax = tel.mmax
nfreq = tel.nfreq
nbl = tel.nbase
npol = tel.num_pol_sky
# If ndays is not set use the default value.
if ndays is None:
ndays = tel.ndays
# Calculate the number of timesamples from the resolution
if resolution == 0:
# Set the minimum resolution required for the sky.
ntime = 2*mmax+1
else:
# Set the cl
ntime = int(np.round(24 * 3600.0 / resolution))
indices = list(itertools.product(np.arange(nfreq), np.arange(npol)))
lind, sind, eind = mpiutil.split_local(nfreq * npol)
# local section of the Tm array
theta_size = tel.theta_size
phi_size = tel.phi_size
Tm = np.zeros((lind, theta_size, phi_size), dtype=np.complex128)
for ind, (f_ind, p_ind) in enumerate(indices[sind:eind]):
hp_map = None
for idx, mapfile in enumerate(maps):
with h5py.File(mapfile, 'r') as f:
if idx == 0:
hp_map = f['map'][f_ind, p_ind, :]
else:
hp_map += f['map'][f_ind, p_ind, :]
if hp_map is not None:
cart_map = hpproj.cartesian_proj(hp_map, tel.cart_projector)
# Calculate the Tm's for the local sections
Tm[ind] = np.fft.ifft(cart_map, axis=1) # / phi_size # m = 0 is at left
Tm = MPIArray.wrap(Tm, axis=0)
# redistribute along different m
Tm = Tm.redistribute(axis=2)
Tm = Tm.reshape((nfreq, npol, theta_size, None))
Tm = Tm.reshape((nfreq, npol*theta_size, None))
ms = np.concatenate([np.arange(0, mmax+1), np.arange(-mmax, 0)])
lm, sm, em = mpiutil.split_local(phi_size)
# local section of mmode
# mmode = np.zeros((lm, nbl, nfreq), dtype=np.complex128)
mmode = np.zeros((lm, nfreq, nbl), dtype=np.complex128)
for ind, mi in enumerate(ms[sm:em]):
mmode[ind] = bt.project_vector_sky_to_telescope(mi, Tm[:, :, ind].view(np.ndarray))
mmode = MPIArray.wrap(mmode, axis=0)
mmode = mmode.redistribute(axis=2) # distribute along bl
# add noise if required
if add_noise:
lbl, sbl, ebl = mpiutil.split_local(nbl)
# Fetch the noise powerspectrum
noise_ps = tel.noisepower(np.arange(sbl, ebl)[:, np.newaxis], np.arange(nfreq)[np.newaxis, :], ndays=ndays).reshape(lbl, nfreq).T[np.newaxis, :, :]
# Seed random number generator to give consistent noise
if seed is not None:
# Must include rank such that we don't have massive power deficit from correlated noise
np.random.seed(seed + mpiutil.rank)
# Create and weight complex noise coefficients
noise_mode = (np.array([1.0, 1.0J]) * np.random.standard_normal(mmode.shape + (2,))).sum(axis=-1)
noise_mode *= (noise_ps / 2.0)**0.5
mmode += noise_mode
del noise_mode
# Reset RNG
if seed is not None:
np.random.seed()
# The time samples the visibility is calculated at
tphi = np.linspace(0, 2*np.pi, ntime, endpoint=False)
# inverse FFT to get timestream
vis_stream = np.fft.ifft(mmode, axis=0) * ntime
vis_stream = MPIArray.wrap(vis_stream, axis=2)
# save vis_stream to file
vis_h5 = memh5.MemGroup(distributed=True)
vis_h5.create_dataset('/timestream', data=vis_stream)
vis_h5.create_dataset('/phi', data=tphi)
# Telescope layout data
vis_h5.create_dataset('/feedmap', data=tel.feedmap)
vis_h5.create_dataset('/feedconj', data=tel.feedconj)
vis_h5.create_dataset('/feedmask', data=tel.feedmask)
vis_h5.create_dataset('/uniquepairs', data=tel.uniquepairs)
vis_h5.create_dataset('/baselines', data=tel.baselines)
# Telescope frequencies
vis_h5.create_dataset('/frequencies', data=tel.frequencies)
# Write metadata
vis_h5.attrs['beamtransfer_path'] = os.path.abspath(bt.directory)
vis_h5.attrs['ntime'] = ntime
# save to file
vis_h5.to_hdf5(tstream._tsfile)
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(completed_file, 'a').close()
mpiutil.barrier()
return tstream
def mapmake_full(self, nside, maptype):
mapfile = self._mapsdir + 'map_%s.hdf5' % maptype
Tmfile = self._Tmsdir + 'Tm_%s.hdf5' % maptype
if os.path.exists(mapfile):
if mpiutil.rank0:
print "File %s exists. Skipping..." % mapfile
mpiutil.barrier()
return
elif os.path.exists(Tmfile):
if mpiutil.rank0:
print "File %s exists. Read from it..." % Tmfile
Tm = MPIArray.from_hdf5(Tmfile, 'Tm')
else:
def _make_Tm(mi):
print "Making %i" % mi
mmode = self.mmode(mi)
return self.beamtransfer.project_vector_telescope_to_sky(mi, mmode)
# if mpiutil.rank0 and not os.path.exists(self._Tmsdir):
# # Make directory for Tms file
# os.makedirs(self._Tmsdir)
# Make directory for Tms file
try:
os.makedirs(self._Tmsdir)
except OSError:
# directory exists
pass
tel = self.telescope
mmax = tel.mmax
lm, sm, em = mpiutil.split_local(mmax+1)
nfreq = tel.nfreq
npol = tel.num_pol_sky
ntheta = tel.theta_size
# the local Tm array
Tm = np.zeros((nfreq, npol, ntheta, lm), dtype=np.complex128)
for ind, mi in enumerate(range(sm, em)):
Tm[..., ind] = _make_Tm(mi)
Tm = MPIArray.wrap(Tm, axis=3)
Tm = Tm.redistribute(axis=0) # redistribute along freq
# Save Tm
Tm.to_hdf5(Tmfile, 'Tm', create=True)
# if mpiutil.rank0 and not os.path.exists(self._mapsdir):
# # Make directory for maps file
# os.makedirs(self._mapsdir)
# Make directory for maps file
try:
os.makedirs(self._mapsdir)
except OSError:
# directory exists
pass
tel = self.telescope
npol = tel.num_pol_sky
ntime = self.ntime
# irfft to get map
# cart_map = np.fft.irfft(Tm, axis=3, n=ntime) * ntime # NOTE the normalization constant ntime here to be consistant with the simulation fft
cart_map = np.fft.hfft(Tm, axis=3, n=ntime)
lfreq = cart_map.shape[0]
hp_map = np.zeros((lfreq, npol, 12*nside**2), dtype=cart_map.dtype)
for fi in range(lfreq):
for pi in range(npol):
hp_map[fi, pi] = tel.cart_projector.inv_projmap(cart_map[fi, pi], nside)
mpiutil.barrier()
hp_map = MPIArray.wrap(hp_map, axis=0)
# save map
hp_map.to_hdf5(mapfile, 'map', create=True)
def generate(self, regen=False):
"""Calculate the total Fisher matrix and bias and save to a file.
Parameters
----------
regen : boolean, optional
Force regeneration if products already exist (default `False`).
"""
if mpiutil.rank0:
st = time.time()
print "======== Starting PS calculation ========"
ffile = self.psdir + "/fisher.hdf5"
if os.path.exists(ffile) and not regen:
print ("Fisher matrix file: %s exists. Skipping..." % ffile)
return
mpiutil.barrier()
# Pre-compute all the angular power spectra for the bands
self.genbands()
# Use parallel map to distribute Fisher calculation
fisher_bias = mpiutil.parallel_map(self.fisher_bias_m, range(self.telescope.mmax + 1))
# Unpack into separate lists of the Fisher matrix and bias
fisher, bias = zip(*fisher_bias)
# Sum over all m-modes to get the over all Fisher and bias
self.fisher = np.sum(np.array(fisher), axis=0).real # Be careful of the .real here
self.bias = np.sum(np.array(bias), axis=0).real # Be careful of the .real here
# Write out all the PS estimation products
if mpiutil.rank0:
et = time.time()
print "======== Ending PS calculation (time=%f) ========" % (et - st)
# Check to see ensure that Fisher matrix isn't all zeros.
if not (self.fisher == 0).all():
# Generate derived quantities (covariance, errors..)
cv = la.inv(self.fisher)
err = cv.diagonal() ** 0.5
cr = cv / np.outer(err, err)
else:
cv = np.zeros_like(self.fisher)
err = cv.diagonal()
cr = np.zeros_like(self.fisher)
f = h5py.File(self.psdir + "/fisher.hdf5", "w")
f.attrs["bandtype"] = self.bandtype
f.create_dataset("fisher/", data=self.fisher)
f.create_dataset("bias/", data=self.bias)
f.create_dataset("covariance/", data=cv)
f.create_dataset("errors/", data=err)
f.create_dataset("correlation/", data=cr)
f.create_dataset("band_power/", data=self.band_power)
if self.bandtype == "polar":
f.create_dataset("k_start/", data=self.k_start)
f.create_dataset("k_end/", data=self.k_end)
f.create_dataset("k_center/", data=self.k_center)
f.create_dataset("theta_start/", data=self.theta_start)
f.create_dataset("theta_end/", data=self.theta_end)
f.create_dataset("theta_center/", data=self.theta_center)
f.create_dataset("k_bands", data=self.k_bands)
f.create_dataset("theta_bands", data=self.theta_bands)
elif self.bandtype == "cartesian":
f.create_dataset("kpar_start/", data=self.kpar_start)
f.create_dataset("kpar_end/", data=self.kpar_end)
f.create_dataset("kpar_center/", data=self.kpar_center)
f.create_dataset("kperp_start/", data=self.kperp_start)
f.create_dataset("kperp_end/", data=self.kperp_end)
f.create_dataset("kperp_center/", data=self.kperp_center)
f.create_dataset("kpar_bands", data=self.kpar_bands)
f.create_dataset("kperp_bands", data=self.kperp_bands)
f.close()
def test_io(self):
import h5py
# Cleanup directories
fname = 'testdset.hdf5'
if mpiutil.rank0 and os.path.exists(fname):
os.remove(fname)
mpiutil.barrier()
gshape = (19, 17)
ds = mpiarray.MPIArray(gshape, dtype=np.int64)
ga = np.arange(np.prod(gshape)).reshape(gshape)
l0, s0, e0 = mpiutil.split_local(gshape[0])
ds[:] = ga[s0:e0]
ds.redistribute(axis=1).to_hdf5(fname, 'testds', create=True)
if mpiutil.rank0:
with h5py.File(fname, 'r') as f:
h5ds = f['testds'][:]
assert (h5ds == ga).all()
ds2 = mpiarray.MPIArray.from_hdf5(fname, 'testds')
assert (ds2 == ds).all()
mpiutil.barrier()
# Check that reading over another distributed axis works
ds3 = mpiarray.MPIArray.from_hdf5(fname, 'testds', axis=1)
assert ds3.shape[0] == gshape[0]
assert ds3.shape[1] == mpiutil.split_local(gshape[1])[0]
ds3 = ds3.redistribute(axis=0)
assert (ds3 == ds).all()
mpiutil.barrier()
# Check a read with an arbitrary slice in there. This only checks the shape is correct.
ds4 = mpiarray.MPIArray.from_hdf5(fname, 'testds', axis=1, sel=(np.s_[3:10:2], np.s_[1:16:3]))
assert ds4.shape[0] == 4
assert ds4.shape[1] == mpiutil.split_local(5)[0]
mpiutil.barrier()
# Check the read with a slice along the axis being read
ds5 = mpiarray.MPIArray.from_hdf5(fname, 'testds', axis=1, sel=(np.s_[:], np.s_[3:15:2]))
assert ds5.shape[0] == gshape[0]
assert ds5.shape[1] == mpiutil.split_local(6)[0]
ds5 = ds5.redistribute(axis=0)
assert (ds5 == ds[:, 3:15:2]).all()
mpiutil.barrier()
# Check the read with a slice along the axis being read
ds6 = mpiarray.MPIArray.from_hdf5(fname, 'testds', axis=0, sel=(np.s_[:], np.s_[3:15:2]))
ds6 = ds6.redistribute(axis=0)
assert (ds6 == ds[:, 3:15:2]).all()
mpiutil.barrier()
if mpiutil.rank0 and os.path.exists(fname):
os.remove(fname)
def _generate_mfiles(self, regen=False):
completed_file = self._mdir + 'COMPLETED_BEAM'
if os.path.exists(completed_file) and not regen:
if mpiutil.rank0:
print
print '=' * 80
print "******* Beam transfer m-files already generated ********"
mpiutil.barrier()
return
if mpiutil.rank0:
print
print '=' * 80
print 'Create beam transfer m-files...'
st = time.time()
# Calculate the Beam Transfer Matrices
nfreq = self.telescope.nfreq
nbl = self.telescope.nbase
npol = self.telescope.num_pol_sky
ntheta = self.telescope.theta_size
nphi = self.telescope.phi_size
# create file to save beam transfer matrices
dsize = (nfreq, nbl, npol, ntheta)
csize = (nfreq, 1, npol, ntheta)
mmax = self.telescope.mmax
ms = np.concatenate([np.arange(0, mmax+1), np.arange(-mmax, 0)])
# get local section of m'th
for ind, mi in enumerate(mpiutil.mpilist(ms, method='con')):
with h5py.File(self._mfile(mi), 'w') as f:
f.create_dataset('beam_m', dsize, chunks=csize, compression='lzf', dtype=np.complex128)
f.attrs['m'] = mi
# calculate the total memory needed for the transfer matrix
total_memory = nfreq * nbl * npol * ntheta * nphi * 16.0 # Bytes, 16 for complex128
limit = 1.0 # GB, memory limit for each process
# make each process have maximum `limit` GB
sigle_memory = limit * 2**30 # Bytes
# how many chunks
num_chunks = np.int(np.ceil(total_memory / (mpiutil.size * sigle_memory)))
# split bls to num_chunks sections
if nbl < num_chunks:
warnings.warn('Could not split to %d chunks for %d baselines' % (num_chunks, nbl))
num_chunks = min(num_chunks, nbl)
num, start, end = mpiutil.split_m(nbl, num_chunks)
for ci in range(num_chunks):
if mpiutil.rank0:
print "Starting chunk %i of %i" % (ci+1, num_chunks)
tarray = self.telescope.transfer_matrices(np.arange(start[ci], end[ci]), np.arange(nfreq))
tarray = MPIArray.wrap(tarray, axis=0)
# redistribute along different m
tarray = tarray.redistribute(axis=3)
# save beam transfer matrices to file
for ind, mi in enumerate(mpiutil.mpilist(ms, method='con')):
with h5py.File(self._mfile(mi), 'r+') as f:
f['beam_m'][:, start[ci]:end[ci]] = tarray[..., ind].view(np.ndarray).reshape(nfreq, num[ci], npol, ntheta)
mpiutil.barrier()
et = time.time()
if mpiutil.rank0:
# Make file marker that the m's have been correctly generated:
open(completed_file, 'a').close()
# Print out timing
print "=== Create beam transfer m-files took %f s ===" % (et - st)