results of math processor load

We have problems to get the results of math (in this case, the matrix multiplication) which differ based on the processor intel used. We saw the differences between the core 2 duo T7700, Xeon X 5460 with a Pentium 4 Xeon based. The operating system does not make the difference (we tried XP x 32, XP x 64, x 64 Vista and windows 7 x 64).

See also the source code with an executable here:

http://www.boschjes.com/LV2009ISSUE

We have implemented our own matrix multiplication (10 x slower) and it gave the same results on all platform (OS / CPU) combinations.

Anyone have similar problems? And you saw him around mathematics? As we only studied the function of matrix multiplication.

These tests were performed using labview 2009, f2. We are still looking at comparison with labview 7.1.1 and labview 8.6.1 tests.

Someone at - it ideas?

Oskar

Hi Oskar,

LabVIEW 2009 SP1 still uses MKL 10.1 because we find some other problems with 10.2 MKL.  If LabVIEW 2009 SP1 does not resolve it.

On http://software.intel.com/en-us/intel-mkl, there is an option to evaluate.   You can download the evaluation version of MKL for 30 days usage.

I have create a revised matrix multiply VI which divides the matrix has submatrices and multiplies B block.

I hope this might solve your problem.  Could you please test it on your PC Xeon X 5460?

Best regards
Michael

Tags: NI Software

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