86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
# *****************************************************************************
|
|
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# * Neither the name of the NVIDIA CORPORATION nor the
|
|
# names of its contributors may be used to endorse or promote products
|
|
# derived from this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
# DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
|
|
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# *****************************************************************************
|
|
|
|
import sys
|
|
import subprocess
|
|
|
|
import torch
|
|
|
|
|
|
def main():
|
|
argslist = list(sys.argv)[1:]
|
|
world_size = torch.cuda.device_count()
|
|
|
|
if '--world-size' in argslist:
|
|
argslist[argslist.index('--world-size') + 1] = str(world_size)
|
|
else:
|
|
argslist.append('--world-size')
|
|
argslist.append(str(world_size))
|
|
|
|
workers = []
|
|
|
|
for i in range(world_size):
|
|
if '--rank' in argslist:
|
|
argslist[argslist.index('--rank') + 1] = str(i)
|
|
else:
|
|
argslist.append('--rank')
|
|
argslist.append(str(i))
|
|
stdout = None if i == 0 else subprocess.DEVNULL
|
|
worker = subprocess.Popen(
|
|
[str(sys.executable)] + argslist, stdout=stdout)
|
|
workers.append(worker)
|
|
|
|
returncode = 0
|
|
try:
|
|
pending = len(workers)
|
|
while pending > 0:
|
|
for worker in workers:
|
|
try:
|
|
worker_returncode = worker.wait(1)
|
|
except subprocess.TimeoutExpired:
|
|
continue
|
|
pending -= 1
|
|
if worker_returncode != 0:
|
|
if returncode != 1:
|
|
for worker in workers:
|
|
worker.terminate()
|
|
returncode = 1
|
|
|
|
except KeyboardInterrupt:
|
|
print('Pressed CTRL-C, TERMINATING')
|
|
for worker in workers:
|
|
worker.terminate()
|
|
for worker in workers:
|
|
worker.wait()
|
|
raise
|
|
|
|
sys.exit(returncode)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|