def run_parallel(fn_name, items, metadata=None):
items = [x for x in items if x is not None]
items = diagnostics.track_parallel(items, fn_name)
imodule = parallel.get("module", "bcbio.distributed")
if parallel["type"].startswith("messaging"):
task_module = "{base}.tasks".format(base=imodule)
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"],
config)
else:
logger.info("multiprocessing: %s" % fn_name)
fn = getattr(
__import__("{base}.multitasks".format(base=imodule),
fromlist=["multitasks"]), fn_name)
num_jobs, cores_per_job = ipython.find_cores_per_job([fn],
parallel,
items, config)
items = [
ipython.add_cores_to_config(x, cores_per_job) for x in items
]
num_jobs = cores_including_resources(num_jobs, metadata, config)
if joblib is None:
raise ImportError(
"Need joblib for multiprocessing parallelization")
out = []
for data in joblib.Parallel(num_jobs)(joblib.delayed(fn)(x)
for x in items):
if data:
out.extend(data)
return out
def start(parallel,
items,
config,
dirs=None,
name=None,
multiplier=1,
max_multicore=None):
"""Start a parallel cluster or machines to be used for running remote functions.
Returns a function used to process, in parallel items with a given function.
Allows sharing of a single cluster across multiple functions with
identical resource requirements. Uses local execution for non-distributed
clusters or completed jobs.
A checkpoint directory keeps track of finished tasks, avoiding spinning up clusters
for sections that have been previous processed.
multiplier - Number of expected jobs per initial input item. Used to avoid underscheduling
cores when an item is split during processing.
max_multicore -- The maximum number of cores to use for each process. Can be used
to process less multicore usage when jobs run faster on more single cores.
"""
if name:
checkpoint_dir = utils.safe_makedir(
os.path.join(dirs["work"], "checkpoints_parallel"))
checkpoint_file = os.path.join(checkpoint_dir, "%s.done" % name)
else:
checkpoint_file = None
sysinfo = system.get_info(dirs, parallel)
items = [x for x in items if x is not None] if items else []
parallel = resources.calculate(
parallel,
items,
sysinfo,
config,
multiplier=multiplier,
max_multicore=int(max_multicore or sysinfo.get("cores", 1)))
try:
if checkpoint_file and os.path.exists(checkpoint_file):
logger.info("run local -- checkpoint passed: %s" % name)
parallel["cores_per_job"] = 1
parallel["num_jobs"] = 1
yield multi.runner(parallel, config)
elif parallel["type"] == "ipython":
with ipython.create(parallel, dirs, config) as view:
yield ipython.runner(view, parallel, dirs, config)
elif parallel["type"] == "clusterk":
with clusterk.create(parallel) as queue:
yield clusterk.runner(queue, parallel)
else:
yield multi.runner(parallel, config)
except:
raise
else:
for x in ["cores_per_job", "num_jobs", "mem"]:
parallel.pop(x, None)
if checkpoint_file:
with open(checkpoint_file, "w") as out_handle:
out_handle.write("done\n")
def run_parallel(fn_name, items, metadata=None):
items = [x for x in items if x is not None]
if len(items) == 0:
return []
items = diagnostics.track_parallel(items, fn_name)
imodule = parallel.get("module", "bcbio.distributed")
sysinfo = system.get_info(dirs, parallel)
if parallel["type"].startswith("messaging"):
task_module = "{base}.tasks".format(base=imodule)
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"], sysinfo, config)
else:
logger.info("multiprocessing: %s" % fn_name)
fn = getattr(__import__("{base}.multitasks".format(base=imodule),
fromlist=["multitasks"]),
fn_name)
jobr = ipython.find_job_resources([fn], parallel, items, sysinfo, config)
items = [ipython.add_cores_to_config(x, jobr.cores_per_job) for x in items]
if joblib is None:
raise ImportError("Need joblib for multiprocessing parallelization")
out = []
for data in joblib.Parallel(jobr.num_jobs)(joblib.delayed(fn)(x) for x in items):
if data:
out.extend(data)
return out
def start(parallel, items, config, dirs=None, name=None, multiplier=1,
max_multicore=None):
"""Start a parallel cluster or machines to be used for running remote
functions.
Returns a function used to process, in parallel items with a given function.
Allows sharing of a single cluster across multiple functions with
identical resource requirements. Uses local execution for non-distributed
clusters or completed jobs.
A checkpoint directory keeps track of finished tasks, avoiding spinning up
clusters for sections that have been previous processed.
multiplier - Number of expected jobs per initial input item. Used to avoid
underscheduling cores when an item is split during processing.
max_multicore -- The maximum number of cores to use for each process. Can be
used to process less multicore usage when jobs run faster on more single
cores.
"""
if name:
checkpoint_dir = utils.safe_makedir(os.path.join(dirs["work"],
"checkpoints_parallel"))
checkpoint_file = os.path.join(checkpoint_dir, "%s.done" % name)
else:
checkpoint_file = None
sysinfo = system.get_info(dirs, parallel)
items = [x for x in items if x is not None] if items else []
max_multicore = int(max_multicore or sysinfo.get("cores", 1))
parallel = resources.calculate(parallel, items, sysinfo, config,
multiplier=multiplier,
max_multicore=max_multicore)
try:
view = None
if checkpoint_file and os.path.exists(checkpoint_file):
logger.info("run local -- checkpoint passed: %s" % name)
parallel["cores_per_job"] = 1
parallel["num_jobs"] = 1
parallel["checkpointed"] = True
yield multi.runner(parallel, config)
elif parallel["type"] == "ipython":
with ipython.create(parallel, dirs, config) as view:
yield ipython.runner(view, parallel, dirs, config)
elif parallel["type"] == "clusterk":
with clusterk.create(parallel) as queue:
yield clusterk.runner(queue, parallel)
else:
yield multi.runner(parallel, config)
except:
if view is not None:
ipython.stop(view)
raise
else:
for x in ["cores_per_job", "num_jobs", "mem"]:
parallel.pop(x, None)
if checkpoint_file:
with open(checkpoint_file, "w") as out_handle:
out_handle.write("done\n")
def run_parallel(fn_name, items, metadata=None):
items = [x for x in items if x is not None]
if len(items) == 0:
return []
items = diagnostics.track_parallel(items, fn_name)
sysinfo = system.get_info(dirs, parallel)
if parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"], sysinfo, config)
else:
imodule = parallel.get("module", "bcbio.distributed")
logger.info("multiprocessing: %s" % fn_name)
fn = getattr(__import__("{base}.multitasks".format(base=imodule),
fromlist=["multitasks"]),
fn_name)
return run_multicore(fn, items, config, parallel["cores"])
def run_parallel(fn_name, items, metadata=None):
if parallel["type"].startswith("messaging"):
task_module = "{base}.tasks".format(base=parallel["module"])
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"], config)
else:
out = []
fn = getattr(__import__("{base}.multitasks".format(base=parallel["module"]),
fromlist=["multitasks"]),
fn_name)
cores = cores_including_resources(int(parallel["cores"]), metadata, config)
with utils.cpmap(cores) as cpmap:
for data in cpmap(fn, filter(lambda x: x is not None, items)):
if data:
out.extend(data)
return out
def run_parallel(fn_name, items, metadata=None):
if parallel["type"].startswith("messaging"):
task_module = "{base}.tasks".format(base=parallel["module"])
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"],
config)
else:
out = []
fn = getattr(
__import__("{base}.multitasks".format(base=parallel["module"]),
fromlist=["multitasks"]), fn_name)
cores = cores_including_resources(int(parallel["cores"]), metadata,
config)
with utils.cpmap(cores) as cpmap:
for data in cpmap(fn, filter(lambda x: x is not None, items)):
if data:
out.extend(data)
return out
def run_parallel(fn_name, items, metadata=None):
items = [x for x in items if x is not None]
if len(items) == 0:
return []
items = diagnostics.track_parallel(items, fn_name)
imodule = parallel.get("module", "bcbio.distributed")
sysinfo = system.get_info(dirs, parallel)
if parallel["type"].startswith("messaging"):
raise NotImplementedError("Messaging parallelization no longer supported")
task_module = "{base}.tasks".format(base=imodule)
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"], sysinfo, config)
else:
logger.info("multiprocessing: %s" % fn_name)
fn = getattr(__import__("{base}.multitasks".format(base=imodule),
fromlist=["multitasks"]),
fn_name)
return run_multicore(fn, items, config, parallel["cores"])
def run_parallel(fn_name, items, metadata=None):
items = [x for x in items if x is not None]
items = diagnostics.track_parallel(items, fn_name)
if parallel["type"].startswith("messaging"):
task_module = "{base}.tasks".format(base=parallel["module"])
runner_fn = runner(task_module, dirs, config, config_file)
return runner_fn(fn_name, items)
elif parallel["type"] == "ipython":
return ipython.runner(parallel, fn_name, items, dirs["work"], config)
else:
logger.info("multiprocessing: %s" % fn_name)
out = []
fn = getattr(__import__("{base}.multitasks".format(base=parallel["module"]),
fromlist=["multitasks"]),
fn_name)
num_jobs, cores_per_job = ipython.find_cores_per_job(fn, parallel, items, config)
items = [ipython.add_cores_to_config(x, cores_per_job) for x in items]
num_jobs = cores_including_resources(num_jobs, metadata, config)
with utils.cpmap(num_jobs) as cpmap:
for data in cpmap(fn, items):
if data:
out.extend(data)
return out
