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benarisse
Beginner
116 Views

count floating point operations with VTune

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I need to count floating point operations executed in one of my c programs. Therefore I started a new Sampling Activity with the event FP_COMP_OPS_EXE.X87. Unfortunalety the number of counted FLOPS was much to few. I am currently working on an Intel Core i7 920 (2.67 GHz). My OS is Ubuntu 8.10 (Kernel Linux 2.6.27-11-generic).
Do you have any idea?
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TimP
Black Belt
116 Views
I think you might benefit from the topic FLOPS count discussed recently here in the forum.
Default options of current compilers for Core i7 use SSE2 rather than x87 instructions.

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Vladimir_T_Intel
Moderator
116 Views
Quoting - benarisse
I need to count floating point operations executed in one of my c programs. Therefore I started a new Sampling Activity with the event FP_COMP_OPS_EXE.X87. Unfortunalety the number of counted FLOPS was much to few. I am currently working on an Intel Core i7 920 (2.67 GHz). My OS is Ubuntu 8.10 (Kernel Linux 2.6.27-11-generic).
Do you have any idea?
I think you might benefit from the topic FLOPS countdiscussed recently here in the forum.
TimP
Black Belt
117 Views
I think you might benefit from the topic FLOPS count discussed recently here in the forum.
Default options of current compilers for Core i7 use SSE2 rather than x87 instructions.

View solution in original post

benarisse
Beginner
116 Views
Quoting - tim18
Default options of current compilers for Core i7 use SSE2 rather than x87 instructions.

Thanks for your help!
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