On 19 Apr 2006, at 18:37, Andrew Straw wrote:
I think that numpy only accesses the SSE units through ATLAS or other external library. So, build numpy without ATLAS. But I'm not 100% sure anymore if there aren't any optimizations that directly use SSE if it's available.
I've tried getting rid of all atlas, blas and lapack packages in my system and rebuilding numpy to use its own unoptimised lapack_lite, but no luck. Just trying to import numpy with PyImport_ImportModule("numpy") causes the program to crash with just a "Floating point exception" message output.
The program I'm embedding Python in is the NS Network Simulator (http://www.isi.edu/nsnam/ns/). It's a complex C++ beast with its own Object-Tcl interpreter, but it's been working fine with embedded Python except for this numpy crash. I've used Numeric before and it worked fine as well.
I'm lost now regarding what to work on to find a solution, anyone familiar with numpy internals has any suggestion?