James wrote: > Hi. :) > > I have a question regarding threading in Python. I'm trying to write > a wrapper script in Python that will spin off multiple (lots!) of > instances of an I/O benchmark/testing utility. I'm very interested > in doing this in Python, but am unsure if this is a good idea. I > thought I read somewhere online that because of the way Python was > written, even if I spun off (forked off?) multiple instances of a > program, all those child processes would be restricted to one CPU. > Is this true?
Python *threads* are limited to a single CPU, or at least they will not run faster on multiple CPUs. I don't think there is any such restriction for forked processes. > I'm not sure if the utility I'm forking is CPU-intensive; it may very > well be. Does Python indeed have this limitation? I would think an I/O benchmark is more likely to be I/O bound... > Also, should I be using os.fork() for this kind of program? There is a fair amount of activity these days around making Python friendly to multi-processing. See http://wiki.python.org/moin/ParallelProcessing Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
