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- performance numbers MKL 11.0 vs Eigen?

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Azua_Garcia__Giovann

Beginner

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09-05-2012
03:33 PM

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performance numbers MKL 11.0 vs Eigen?

Hello,

I found the results here a bit surprising specially the MVM one (matrix vector multiplication with and without transposition) ... how come MKL that has even AVX and is heavily optimized gets lower performance than Eigen that only has implemented SSE2? http://eigen.tuxfamily.org/index.php?title=Benchmark

They also show that the benchmarks correspond to the latest MKL 11.0

I understand they outperform MKL for "complex expressions" using expression templates, it is clear but how come they still show to outperform MKL in MVM primitives???

Thanks in advance,

Best regards,

Giovanni

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Gennady_F_Intel

Moderator

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09-06-2012
05:30 AM

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what are the problem sizes in that case?
it might happens for the smal inputs

Konstantin_A_Intel

Employee

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09-06-2012
10:38 PM

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Konstantin_A_Intel

Employee

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09-06-2012
10:45 PM

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Gael_G_

Beginner

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09-07-2012
08:47 AM

207 Views

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For more complete information about compiler optimizations, see our Optimization Notice.