calculating total fpu operations

[pttsusa]

I am trying to track the math involved in a process. I am not sureif Vtune perf analysis has a feature to display total number of FPU instructions for a particular process.

a) total fadd instructions

b) total fsub instructions

c) total fmul instructions

d) total fsqrt instructions

e) total fdiv instructions

Any insights will help...

thanks

Pat

[David_A_Intel1]

What the VTune analyzer can expose in regards to this question largely depends on the processor. Look for an event such as "FP Instructions Retired". I know that some of the Pentium 4 processors have a similar event and this can be used to estimate total FP ops. Sampling is statistical, so it will not be exact. Also, I don't remember seeing an event to separate fpadds from fpsubs, etc., but you will need to look at the events for the processor you are tuning on.

Regards,