Hello!
I need to calculate the number of DADD instructions executed on device AI100. I guess to use the expression:
DADD = smsp__sass_thread_inst_executed_op_dadd_pred_on.sum.per_cycle_elapsed * smsp__cycles_elapsed.avg.per_second * kernel_duration * smsp_on_SM * SMs_count
where, the runtime and HW values:
duration = 1.58 mseconds * 1000 # convert to nseconds
smsp_on_SM = 4
SMs_count=108
But, I’m getting too big value.
Where I’m wrong?
Thanks!
I think this is by now answered in your other post Difference sm__cycles_elapsed/smsp__cycles_elapsed and sm__inst_executed/smsp__inst_executed? - #4 by felix_dt
For completeness, you don’t have to use the .per_cycle_elapsed sub-metric if you really want the pure sum. In this case, using the .sum sub-metric smsp__sass_thread_inst_executed_op_dadd_pred_on.sum is sufficient, and no further calculations are necessary.
Similarly, instead of computing smsp__cycles_elapsed.avg.per_second * kernel_duration, you can use smsp__cycles_elapsed.max (or better gpc__cycles_elapsed.max) directly, to get the number of cycles of the longest-executing unit instance, which thereby determines the number of cycles for the entire kernel.
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.