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[Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex produ
From: |
Tatsuro MATSUOKA |
Subject: |
[Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product |
Date: |
Mon, 13 Feb 2012 04:18:50 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7 |
Follow-up Comment #19, bug #34822 (project octave):
I have tried dynamic arch build of OpenBLAS with DYNAMIC_ARCH=1
The performance test results are
octave:1> n=2000; A=randn(n); B=randn(n);tic; C=A*B; t=toc,
MFLOPS=2*n^3/t*1e-6
t = 1.0111
MFLOPS = 1.5825e+004
t = 1.0131
MFLOPS = 1.5794e+004
t = 1.0101
MFLOPS = 1.5841e+004
t = 0.99706
MFLOPS = 1.6047e+004
t = 1.0001
MFLOPS = 1.5999e+004
On the other hand, simple build
make CC=i686-pc-mingw32-gcc FC=i686-pc-mingw32-gfortran TARGET=NEHALEM
The performance test results are
n=2000; A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6
t = 0.40902
MFLOPS = 3.9118e+004
t = 0.38302
MFLOPS = 4.1773e+004
t = 0.37802
MFLOPS = 4.2326e+004
t = 0.38502
MFLOPS = 4.1556e+004
t = 0.37702
MFLOPS = 4.2438e+004
Simple build has rather higher performance than that of the dynamic
architecture build for my case.
(My PC has a Core(TM)i5-2400CPU @3.1GHz, Perhaps Sandy bridge)
I think that the dynamic architecture is a better choice for the stability and
convenience from the distribution point of view. However, the best ability
can be available the CPU specific build.
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- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Philip Nienhuis, 2012/02/03
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Tatsuro MATSUOKA, 2012/02/03
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Nitzan Arazi, 2012/02/08
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Jordi GutiĆ©rrez Hermoso, 2012/02/08
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Tatsuro MATSUOKA, 2012/02/08
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Nitzan Arazi, 2012/02/09
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Nitzan Arazi, 2012/02/09
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product,
Tatsuro MATSUOKA <=
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Nitzan Arazi, 2012/02/13
- [Octave-bug-tracker] [bug #34822] Mingw panics on a simple complex product, Tatsuro MATSUOKA, 2012/02/13