count floating point operations with VTune

[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?

[Vladimir_T_Intel]

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 · Accepted solution]

Quoting - Vladimir Tsymbal (Intel)

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.

[benarisse]

Quoting - tim18

Default options of current compilers for Core i7 use SSE2 rather than x87 instructions.

Thanks for your help!