On 2005-07-05, Grant Edwards <[EMAIL PROTECTED]> wrote: >> Don't think you can do that with Python... The Python runtime >> interpreter itself is running on a single processor. > > I don't see how that can be. Under Linux at least, the Python > threading module uses "real" OS threads, so there are multiple > instances of the interpreter, right? Generally all but one of > them will be blocked on the GIL, but there are still multiple > interpreter threads (which can be on multiple different CPUs). > > Or is the Python interpreter actually doing the context > switches itself?
Upon further thought, that just can't be the case. There has to be multiple instances of the intepreter because the interpreter can make C system calls that block (thus blocking that instance of the interpreter). Other Python threads within the program continue to run, so there must be multiple Python intepreters. -- Grant Edwards grante Yow! I'm wearing PAMPERS!! at visi.com -- http://mail.python.org/mailman/listinfo/python-list