Commit 13c5900e authored by Peter-Bernd Otte's avatar Peter-Bernd Otte


parent a9c342d7
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Workload Distributor
# Version 0.1
# Minimal python version 3.6
# on Mogon 2: run first
# module load lang/Python/3.6.6-foss-2018b
from mpi4py import MPI
import platform
import multiprocessing #to get number of cores
import argparse
import subprocess
from time import sleep
import os
import datetime
size = comm.Get_size()
rank = comm.Get_rank()
parser = argparse.ArgumentParser(description='Workload distributor for trivial parallelism.')
parser.add_argument('execname', help='name of executable to call')
parser.add_argument("-v", "--verbose", help="increase output verbosity", default=False, action="store_true")
parser.add_argument("-V", "--version", help="Returns the actual program version", action="version", version='%(prog)s 0.1')
parser.add_argument("-d", "--delay", help="time delay in ms between starts of consecutive workers", default=50, type=int)
if rank == 0:
args = parser.parse_args()
print("Delay: "+str(args.delay)+" ms")
clients = {}
worklist = ['file1.txt', 'file2.txt', 'file3.txt']
now =
outputdir = os.getcwd() + "output_{:04d}{:02d}{:02d}{:02d}{:02d}{:02d}".format(now.year,now.month,,now.hour,now.minute,now.second)
if os.path.isdir("./"+outputdir):
print("Output directory already exists. Exiting.")
if rank == 0:
if args.verbose:
print("verbosity turned on")
print("Executing: ",args.execname)
print("Output dir: ",outputdir)
#prepare output directory
print('Total number of workers ',size-1)
for i in range(1,size):
clients[i] = comm.recv(source=i)
for i in range(1,size):
comm.send(args.execname, dest=i)
print ("rank "+str(rank))
nodeinfo = {'machine':platform.machine(), 'hostname': platform.node(), 'Ncores': multiprocessing.cpu_count(), 'os': platform.system(), 'pythonVersion': platform.python_version() }
comm.send(nodeinfo, dest=0)
workstr = comm.recv(source=0)
print("Rank "+str(rank)+" recieved: "+workstr)
bashCommand = workstr + " > output"+str(rank)+".txt"
completed =, shell=True)
print('Rank '+str(rank)+' returncode: ',completed.returncode)
except subprocess.CalledProcessError as err:
print('Rank '+str(rank)+' ERROR:', err)
if rank == 0:
# print(clients)
# run commands
#cd into subdirector
# catch exceptions
\ No newline at end of file
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