* AVX optimized gf-complete
@ 2014-03-26 22:44 Loic Dachary
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From: Loic Dachary @ 2014-03-26 22:44 UTC (permalink / raw)
To: Kevin Greenan; +Cc: Ceph Development
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Hi Kevin,
Although https://bitbucket.org/jimplank/gf-complete does not have explicit #if related to AVX http://en.wikipedia.org/wiki/Advanced_Vector_Extensions , it is used when the compiler supports it ( https://bitbucket.org/jimplank/gf-complete/src/f8ff1e2f64fc88bf74861a0ceec44d130ff1902c/m4/ax_ext.m4?at=master#cl-252 ) and some AVX specific instructions are used in the compiled binary.
http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/i386-and-x86-64-Options.html#i386-and-x86-64-Options suggests that AVX is not widely spread.
How important is AVX to gf-complete ? Is it nice to have but with marginal benefits ? Or does it make a significant difference ?
Thanks for all the help :-)
--
Loïc Dachary, Artisan Logiciel Libre
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2014-03-26 22:44 AVX optimized gf-complete Loic Dachary
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