On Sat, Aug 4, 2012 at 12:14 PM, Aron Ahmadia <aron@ahmadia.net> wrote:
Hi David,
Apple's response here is somewhat confusing, but I will add that on the supercomputing side of things we rarely fork, as this is not well-supported from the vendors or the hardware (it's hard enough to performantly spawn 500,000 processes statically, doing this dynamically becomes even more challenging). This sounds like an issue in Python multiprocessing itself, as I guess many other Apple libraries will fail or crash with the fork-no-exec model.
My suggestion would be that numpy continue to integrate with Accelerate but prefer a macports or brew supplied blas, if available. This should probably also be filed as a wont-fix bug on the tracker so anybody who hits the same problem knows that it's on the system side and not us.
To be clear, I am not suggesting removing support for linking against accelerate, just to go away from it for our binary releases. David