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[Gary Pekmezi <question647852@xxxxxxxxxxxxxxxxxxxxx>]

Question #647852 on Yade changed:
https://answers.launchpad.net/yade/+question/647852

    Status: Open => Answered

Gary Pekmezi proposed the following answer:
Deepak,

I think you will need to load a multiprocessing library first, then you
can loop through Yade objects using a multiprocessing pool [1] instead
of the single-threaded sequential for loop you are currently using.

For example, instead of:

for b in O.bodies:
  pvel.append(b.state.vel); prot.append(b.state.angVel)

you would do something like (please note it's just a sample, I haven't
tested it):

import multiprocessing as mp
def appVel(i):
    pvel[i] = (O.bodies)[i].state.vel
    prot[i] = (O.bodies)[i].state.angVel
if __name__=="__main__":
    numBods = len(O.bodies)
    pvel = mp.Array('d',range(numBods))
    prot = mp.Array('d',range(numBods))
    p=mp.Pool(numThreads)
    p.map(appVel,range(0,numBods))


[1] https://docs.python.org/2/library/multiprocessing.html

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