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An Intel SIMD drop in kernel
As Clint knows, I've been working on an SIMD SGEMM for PIIIs. I've
been attempting to write an drop in kernel for ATLAS, but I've found
that the restriction of N=M=K<64 to be pretty incompatible with the
fundamental algorithm I've been employing (maximal length dot
For our current research I've been tinkering with my old
implementation of Emmerald (http://csl.anu.edu.au/~daa/research.html)
in an attempt to boost performance. The result is a new version of
Emmerald roughly 1.1 times faster than the old, with peak Mflops
1.86 times the clock rate. It uses Atlas for some of it's smaller
clean up cases.
Getting to the point, I'd like to offer it as a drop in SGEMM for
ATLAS. I am reasonably confident that it is not possible to
write a user kernel which achieves similar performance (having tried
I'd like to know the best way to package up Emmerald to make it easy
for Clint to integrate as he sees fit.
-Doug -- http://csl.anu.edu.au/~daa, Ph:(02) 6279-8608, Fax:(02) 6279-8651
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