On 04/15/2012 11:45 AM, Tom Rondeau wrote:
Yes, so the vmovss is an AVX instruction (the AVX version of movss),
but your processor doesn't have AVX according to your flags above.
Except that it does. According to Intel, the i5-2540M processor
supports AVX, but your OS isn't recognizing the avx flag in
/proc/cpuinfo. The Volk build process asks the processor directly for
the flags that it can use.
I really think this is a problem with Xen (or at least something in the setup).
Tom
So, how is this going to play out with packaged-binaries? If the
decisions about which instruction sets to use are made at compile time,
you could end up with packaged binaries that aren't portable, and
will blow the heck up. Or am I mis-understanding what you mean
by "at build time"?
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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