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Tester for openblas needed
- From: Marco Atzeri <marco dot atzeri at gmail dot com>
- To: "cygwin at cygwin dot com" <cygwin at cygwin dot com>
- Date: Mon, 20 Oct 2014 15:20:10 +0200
- Subject: Tester for openblas needed
- Authentication-results: sourceware.org; auth=none
Hi,
before making an official cygwin package for OpenBlas (fast Blas)
http://www.openblas.net/
I would like some test from potential users.
The dynamic library is multicore, so it should work on "all" processors,
but unfortunately I can only test on my dual Core i5-3320M.
On this system the speedup of basic BLAS operation is notable.
1000x1000x1000 DGEMM tests give
for x86_64 architecture
0.818047 s 2444.847301 MFLOPS x86_64 netlib reference
0.055000 s 36363.636364 MFLOPS x86_64 openblas 2.12
for i686 architecture
0.825001 s 2424.239486 MFLOPS i686 netlib reference
0.095001 s 21052.409975 MFLOPS i686 openblas 2.12
Libraries are available on:
http://matzeri.altervista.org/x86/openblas/libopenblas_dynamic/
http://matzeri.altervista.org/x86_64/openblas/libopenblas_dynamic/
To use them is enough to copy the cygblas-0.dll in any path
directory before "/usr/lib/lapack" where the lapack one is located.
On http://matzeri.altervista.org/works/openblas/
there is also a DGEMM test routine, if you have no other benchmark.
Thanks in advance
Marco
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