Hello
Please tell me which is correct to measure the performance.
1. n=2000; A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6
2. n=2000; A=randn(n); B=randn(n);ta=cputime; C=A*B; t=cputime-ta,
MFLOPS=2*n^3/t*1e-6
Case 1 gives two - four times faster than that of the case 2.
Example
octave:2> n=2000; A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6
t = 0.70904
MFLOPS = 2.2566e+004
octave:3> n=2000; A=randn(n); B=randn(n);ta=cputime; C=A*B; t=cputime-ta,
MFLOPS=2*n^3/t*1e-6
t = 1.4040
MFLOPS = 1.1396e+004
Which test is correct to check the performance.
Regards
Tatsuro
--- On Mon, 2012/2/20, Tatsuro MATSUOKA wrote:
Hello
I have been misled. OpenBLAS can be built msys+MinGW tool chain.
However, I feel that fluctuation of simple performance test of larger than
that built on cygwin. I will continue further test.
Perhaps
Regards
Tatsuro
--- On Mon, 2012/2/20, nitnit wrote:
xianyi wrote
Hi Nitzan,
What's the version of OpenBLAS?
I just released 0.1 alpha2.5 version including some patches for MingW
64-bit.
Hi xianyi,
It was 2.4-2. I have seen your latest 2.5 release and will try it later
today.
Nitzan
--
View this message in context:
http://octave.1599824.n4.nabble.com/Re-Octave-3-6-0-on-Windows-XP-plot-fails-tp4392652p4403360.html
Sent from the Octave - General mailing list archive at Nabble.com.
_______________________________________________
Help-octave mailing list
address@hidden
https://mailman.cae.wisc.edu/listinfo/help-octave
_______________________________________________
Help-octave mailing list
address@hidden
https://mailman.cae.wisc.edu/listinfo/help-octave
_______________________________________________
Help-octave mailing list
address@hidden
https://mailman.cae.wisc.edu/listinfo/help-octave