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Question:
Watching the threads with AVX problems and I'm curious enough to ask if you have full source for the elastique module or just precompiled lib with headers, etc. Hmm, is there any chance to be a nasty bug in intel's implementation for the runtime CPU dispatching? I have a third question too, but I'll save it for later... :)
Asked by gio (2.84.102.x) on April 26 2013, 4:18am
Reply on April 26 2013, 2:17pm (edited at April 27 2013, 12:58pm):
Edit: looks like elastique was using VEX-encoded AVX instructions, which are only supported in 64 bit mode (but for some reason work in 32 bit mode on some systems).
Edit again: also, looks like when using AVX one needs to check the results of a certain xgetbv, in addition to the CPUID flags. Boo.
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