STINNER Victor added the comment: > On for example x32 malloc returns 16 byte aligned memory but size_t is 4 > bytes.
x32 is a strange platform :-( Does numpy support it? I'm not sure that Python works on such platform. I suggest to hardcode 16 or 32 bytes in _PyMem_DebugRawAlloc instead of relying on sizeof(size_t). pymalloc aligns memory allocations to 8 bytes if I recall correctly. > How it cause problem? numpy uses SIMD instructions which require strict memory alignement. Note: There was also an issue #18835 to "Add aligned memory variants to the suite of PyMem functions/macros", but it was rejected. ---------- nosy: +haypo _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30150> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
