For a couple of months, I've been successfully using the Python set_process_affinity_mask wrapper from
http://pypi.python.org/pypi/affinity/0.1.0 Now I've upgraded from Ubuntu 8.04 to Ubuntu 8.10 (from gcc 4.2.3 to gcc 4.3.2) and set_process_affinity_mask seems to fail on the x86 Ubuntu install. It still works fine, after upgrade, on the x64 Ubuntu install. I've tried re-installing Python, and the affinity package, and gcc, and glibc, and ... without getting it to work. Specifically, I have a function def setAffinity(): if affinitymask: set_process_affinity_mask(os.getpid(),affinitymask) which is passed to a spawned process p = Popen(commandline,...,preexec_fn=setAffinity) Reducing setAffinity() to os.getpid() lets the program run without failure, trying to get_process_affinity_mask or set_process_affinity_mask gives ERROR 22 Invalid argument Please suggest what I can do to debug / fix this problem. -- http://mail.python.org/mailman/listinfo/python-list