Pierre Barbier de Reuille wrote:
[EMAIL PROTECTED] a écrit :
Hello,
Is anyone has experiance in running python code to run multi thread parallel in multi processor. Is it possible ?
Can python manage which cpu shoud do every thread?
Sincerely Yours, Pujo
There's just no way you can use Python in a multi-processor environment,
This isn't exactly correct. There is no way with plain, out of the box Python (and writing plain Python code) to take full advantage of multiple processors using a single process. A single plain vanilla Python process will saturate at most one CPU. I think that's what you were trying to express, but I thought it would be best to clarify. The machine I'm running on right now is a dual-CPU machine. I can *definitely* run Python on it. I haven't tried threading just yet since it's a new-to-me machine. But if I were to watch gkrellm, I would expect to see a CPU intensive (multithreaded) process flip back and forth between the two CPUs, taking its turn totally saturating both of them, one at a time.
because the GIL (Global Interpreter Lock) will prevent two threads from running concurrently. When I saw this discussed, the Python developper were more into multi-process systems when it comes to multi-processors.
I think I even heard some discussion about efficient inter-process messaging system, but I can't remember where :o)
Hope it'll help.
Pierre
Jeremy Jones
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