[Numpy-discussion] numarray on 64 bits
jmiller at stsci.edu
Thu Apr 29 04:17:06 CDT 2004
On Thu, 2004-04-29 at 03:51, Marc Poinot wrote:
> Did anybody use numarray on a 64 bits platform ?
Numarray has been used on Compaq Alpha/Tru64 and also SGI Altix, but
neither is an everyday platform for us at STScI.
> (e.g. SGI/Irix)
> The package works on our 64 bits platforms... using 32 bits mode,
> but not using 64 mode. Big crash in _ufunc...
This is probably a bug which has was created since we dropped Tru64 at
STScI. A gdb traceback would be useful here to help understand where
the crash occurred. Generally, crashes result from the improper use of
ints/longs in the numarray C-code.
> Is there a flag to set somewhere, trick, hint, noway ?
There's really only one flag that matters for 64-bit operation on UNIX:
LP64. It's controlled/propagated in the file generate.py. LP64 asserts
that longs and pointers are 64-bit, while ints remain 32-bit. I imagine
you've already set this.
Todd Miller <jmiller at stsci.edu>
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