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prun.py
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prun.py
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#! /usr/bin/env python
#
# Copyright (c) 2014, Douban Inc.
# All rights reserved.
#
# Distributed under the BSD License. Check out the LICENSE file for full text.
#
# Paracel - A distributed optimization framework with parameter server.
#
# Downloading
# git clone https://github.com/douban/paracel.git
#
# Authors: Hong Wu <xunzhangthu@gmail.com>
#
try:
from optparse import OptionParser
except ImportError as e:
print e
print 'optparse module required'
exit(0)
import os
import sys
import socket
import random
import subprocess
import logging
logging.basicConfig(filename='paracelrun_log', format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)
logger = logging.getLogger(__name__)
PARACEL_INSTALL_PREFIX = os.path.dirname(os.path.abspath(__file__))
def paracelrun_cpp_proxy(n_srv, init_port):
'''Get the ports from started parameter server procs'''
from subprocess import Popen, PIPE
cmd_lst = [os.path.join(PARACEL_INSTALL_PREFIX, 'bin/paracelrun_cpp_proxy --nsrv'), str(n_srv), '--init_port', str(init_port)]
cmd = ' '.join(cmd_lst)
logger.info(cmd)
p = Popen(cmd.split(), stdin=PIPE, stdout=PIPE)
return p.stdout.readline()
def get_free_port():
''''Get available port in os'''
def is_avaliable(port):
cmd = 'netstat -tuln | grep LISTEN | cut -f 2 -d :'
tmp = os.popen(cmd)
content = tmp.read()
content = content.strip('\n').split('0.0.0.0')
plst = [item.strip('\n').strip(' ') for item in content]
while '' in plst:
plst.remove('')
plst = [int(item) for item in plst]
tmp.close()
if port in plst:
return False
else:
return True
port = random.randint(10000, 65535)
while not is_avaliable(port):
port = random.randint(10000, 65535)
return port
def init_starter(method, mem_limit, ppn, hostfile, group):
'''Assemble commands for running paracel programs'''
starter = ''
if not hostfile:
hostfile = '~/.mpi/large.18'
if method == 'mesos':
if group:
starter = '%s/mrun -m %s -p %s -g %s -n ' % (PARACEL_INSTALL_PREFIX, mem_limit, ppn, group)
else:
starter = '%s/mrun -m %s -p %s -n ' % (PARACEL_INSTALL_PREFIX, mem_limit, ppn)
elif method == 'mpi':
starter = 'mpirun --hostfile %s -n ' % hostfile
elif method == 'local':
starter = 'mpirun -n '
else:
print 'method %s not supported.' % method
sys.exit(1)
return starter
if __name__ == '__main__':
optpar = OptionParser()
optpar.add_option('-p', '--snum', default=1,
action='store', type='int', dest='parasrv_num',
help='number of parameter servers')
optpar.add_option('--m_server',
action='store', type='string', dest='method_server',
help='running method for parameter servers. If not given, set with the same value of -m or --method', metavar='local | mesos | mpi')
optpar.add_option('--ppn_server',
action='store', type='int', dest='ppn_server',
help='mesos case: procs number per node of parameter servers. If not given, set with the same value of --ppn')
optpar.add_option('--mem_limit_server',
action='store', type='int', dest='mem_limit_server',
help='mesos case: memory size of each task in parameter servers. If not given, set with the same value of --mem_limit')
optpar.add_option('--hostfile_server',
action='store', type='string', dest='hostfile_server',
help='mpi case: hostfile for mpirun of parameter servers. If not given, set with the same value of --hostfile')
optpar.add_option('-w', '--wnum', default=1,
action='store', type='int', dest='worker_num',
help='number of workers for learning')
optpar.add_option('-m', '--method', default='local',
action='store', type='string', dest='method',
help='running method for workers', metavar='local | mesos | mpi')
optpar.add_option('--ppn', default=4,
action='store', type='int', dest='ppn',
help='mesos case: procs number per node for workers')
optpar.add_option('--mem_limit', default=200,
action='store', type='int', dest='mem_limit',
help='mesos case: memory size of each task of workers')
optpar.add_option('--hostfile',
action='store', type='string', dest='hostfile',
help='mpi case: hostfile for mpirun for workers')
optpar.add_option('-c', '--cfg_file',
action='store', type='string', dest='config',
help='config file in json fmt, for alg usage')
optpar.add_option('-g', '--group', default='',
action='store', type='string', dest='worker_group',
help='mesos case: which group for worker to run')
optpar.add_option('--group_server',
action='store', type='string', dest='server_group',
help='mesos case: which group for server to run')
(options, args) = optpar.parse_args()
nsrv = 1
nworker = 1
if options.parasrv_num:
nsrv = options.parasrv_num
if options.worker_num:
nworker = options.worker_num
if not options.method_server:
options.method_server = options.method
if not options.ppn_server:
options.ppn_server = options.ppn
if not options.mem_limit_server:
options.mem_limit_server = options.mem_limit
if not options.hostfile_server:
options.hostfile_server = options.hostfile
server_starter = init_starter(options.method_server,
str(options.mem_limit_server),
str(options.ppn_server),
options.hostfile_server,
options.server_group)
worker_starter = init_starter(options.method,
str(options.mem_limit),
str(options.ppn),
options.hostfile,
options.worker_group)
#initport = random.randint(30000, 65000)
#initport = get_free_port()
initport = 11777
start_parasrv_cmd_lst = [server_starter, str(nsrv), os.path.join(PARACEL_INSTALL_PREFIX, 'bin/start_server --start_host'), socket.gethostname(), ' --init_port', str(initport)]
start_parasrv_cmd = ' '.join(start_parasrv_cmd_lst)
logger.info(start_parasrv_cmd)
procs = subprocess.Popen(start_parasrv_cmd, shell=True, preexec_fn=os.setpgrp)
try:
serverinfo = paracelrun_cpp_proxy(nsrv, initport)
entry_cmd = ''
if args:
entry_cmd = ' '.join(args)
alg_cmd_lst = [worker_starter, str(nworker), entry_cmd, '--server_info', serverinfo, '--cfg_file', options.config]
alg_cmd = ' '.join(alg_cmd_lst)
logger.info(alg_cmd)
os.system(alg_cmd)
os.killpg(procs.pid, 9)
except Exception as e:
logger.exception(e)
os.killpg(procs.pid, 9)