From: Marco Atzeri <marco.atzeri@gmail.com>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: Tester for openblas needed
Date: Mon, 20 Oct 2014 13:20:00 -0000 [thread overview]
Message-ID: <54450C0A.6050705@gmail.com> (raw)
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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next reply other threads:[~2014-10-20 13:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-20 13:20 Marco Atzeri [this message]
2014-10-20 14:00 ` Tony Kelman
2014-10-20 14:34 ` Marco Atzeri
2014-10-20 16:16 ` Tony Kelman
2014-10-20 21:57 ` Marco Atzeri
2014-10-20 23:33 ` Tony Kelman
2014-10-21 5:48 ` Marco Atzeri
2014-10-21 11:56 ` Marco Atzeri
2014-10-21 12:39 ` Tony Kelman
2014-10-21 14:01 ` Marco Atzeri
2014-10-21 16:59 ` Achim Gratz
2014-10-21 17:49 ` Tony Kelman
2014-10-21 18:32 ` Marco Atzeri
2014-10-21 18:03 ` Marco Atzeri
2014-10-21 13:29 ` Marco Atzeri
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