[Python-ideas] Python 3000 TIOBE -3%
Sturla Molden
sturla at molden.no
Thu Feb 9 19:57:20 CET 2012
On 09.02.2012 19:42, Mike Meyer wrote:
> If threading is the only acceptable concurrency mechanism, then Python
> is the wrong language to use. But you're also not building scaleable
> systems, which is most of where it really matters. If you're willing
> to consider things other than threading - and you have to if you want
> to build scaleable systems - then Python makes a good choice.
Yes or no... Python is used for parallel computing on the biggest
supercomputers, monsters like Cray and IBM blue genes with tens of
thousands of CPUs. But what really fails to scale is the Python module
loader! For example it can take hours to "import numpy" for 30,000
Python processes on a blue gene. And yes, nobody would consider to use
Java for such systems, even though Java does not have a GIL (well,
theads do no matter that much on a cluster with distributed memory
anyway). It is Python, C and Fortran that are popular. But that really
disproves that Python sucks for big concurrency, except perhaps for the
module loader.
Sturla
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