All Articles Tagged speedup

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No Speedup Using dsyr on Core 2 Duo Running Linux[Forums]
Hi,My code is along the lines of the following.  The dimensions are A(500,500) x(500)for ( int i = 0 ; i < 100000 ; i++) cblas_dsyr(...A,x,...)cout << A << endl ;I was hoping to get a nice...

Posted: 2009-07-17 04:58:54		speedup
speed up[Forums]
if i run a piece of code serially, and then parallelize it with TBB and run it... both times on a dual core system, what is the maximum speed-up that can be acheived?(or, is there any such "maximum speedup...

Posted: 2009-03-26 04:15:54		speedup
Speeding up IPP FFT[Forums]
I'm benchmarking different implementations of 1D-FFT, and I've written a simple code for testing IPP:#include <iostream>#include <ipps.h>#include <sys/time.h>int main() { for (unsigned...

Posted: 2009-02-13 08:47:36		FFT, fftw3, IPP, speedup
ifort: -ipo-jobs uses less than n jobs, gives no speedup[Forums]
When I use -ipo-jobs4, hoping to speed up the link phase of my program, I get no speedup.  top shows only one ifort process, requiring 100% of cpu on an 8 core machine with no other programs loading the...

Posted: 2008-12-08 16:38:16		ifort, IPO, ipo-jobs, linking, speedup
what is the fastest way to compute 3x3 matrix inverse, 3x3 matrix multiplication?[Forums]
I perform tens of millions of computations of 3x3 matrix products. The code is already parallelized using a very efficient domain decomposition, so let's consider only single-thread code for now. (At...

Posted: 2008-12-07 22:50:03		ifort, matrix inverse, matrix multiplication, speedup