Source code for bmtk.simulator.pointnet.io_tools
# Copyright 2017. Allen Institute. All rights reserved
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"""
Functions for logging, writing and reading from file.
"""
import nest
from bmtk.simulator.core.io_tools import IOUtils
# Want users to be able to use NEST whether or not it is compiled in parallel mode or not, which means checking if
# the method nest.SyncPRocesses (aka MPI Barrier) exists. If it doesn't try getting barrier from mpi4py
try:
rank = nest.Rank()
n_nodes = nest.NumProcesses()
except Exception as e:
rank = 0
n_nodes = 1
try:
barrier = nest.SyncProcesses
except AttributeError as exc:
try:
from mpi4py import MPI
barrier = MPI.COMM_WORLD.Barrier
except:
# Barrier is just an empty function, no problem if running on one core.
barrier = lambda: None
[docs]class NestIOUtils(IOUtils):
def __init__(self):
super(NestIOUtils, self).__init__()
self.mpi_rank = rank
self.mpi_size = n_nodes
[docs] def barrier(self):
barrier()
[docs] def quiet_simulator(self):
nest.set_verbosity('M_QUIET')
[docs] def setup_output_dir(self, config_dir, log_file, overwrite=True):
super(NestIOUtils, self).setup_output_dir(config_dir, log_file, overwrite=True)
if n_nodes > 1 and rank == 0:
io.log_info('Running NEST with MPI ({} cores)'.format(n_nodes))
io = NestIOUtils()