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From: | Marcus D. Leech |
Subject: | Re: [Discuss-gnuradio] Volk library invalid opcode exception |
Date: | Sun, 15 Apr 2012 11:51:58 -0400 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111108 Fedora/3.1.16-1.fc14 Thunderbird/3.1.16 |
On 04/15/2012 11:45 AM, Tom Rondeau wrote:
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 meanYes, 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
by "at build time"? -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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