Thanks. Does it matter if I call shell commands os.system...etc in calculate?
Thanks, --j [EMAIL PROTECTED] wrote: > John wrote: > > I want to do something like this: > > > > for i = 1 in range(0,N): > > for j = 1 in range(0,N): > > D[i][j] = calculate(i,j) > > > > I would like to now do this using a fixed number of threads, say 10 > > threads. > > What is the easiest way to do the "parfor" in python? > > > > Thanks in advance for your help, > > As it was already mentioned before threads will not help in terms of > parallelism (only one thread will be actually working). If you want to > calculate this in parallel here is an easy solution: > > import ppsmp > > #start with 10 processes > srv = ppsmp.Server(10) > > f = [] > > for i = 1 in range(0,N): > for j = 1 in range(0,N): > #it might be a little bit more complex if 'calculate' depends on > other modules or calls functions > f.append(srv.submit(calculate, (i,j))) > > for i = 1 in range(0,N): > for j = 1 in range(0,N): > D[i][j] = f.pop(0) > > You can get the latest version of ppsmp module here: > http://www.parallelpython.com/ -- http://mail.python.org/mailman/listinfo/python-list
