On Fri, Dec 9, 2011 at 13:18, Pierre Haessig <pierre.haessig@crans.org> wrote:
Le 09/12/2011 09:31, Robert Kern a écrit :
We have some global state that we need to keep, and this gets interfered with in a multiple interpreter environment. I recently got interested in multiprocessing computation with numpy and now I get scare by your statement ! Please don't tell me it is unsafe to launch multiple jobs (for instance with multiprocressing's Pool.map) just doing some ndarray arithmetic !
That's why I'd like to understand better the issue raised by Yang. For instance, what does exactly "multiple CPython interpreters" stands for ?
Using multiprocessing is fine. That starts up multiple interpreters in *different* processes. Yang is using a non-Python program that embeds the CPython interpreter and starts up multiple copies of it in the same process. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco