Intel Vtune Event CPU_CLK_UNHALTED.CORE

Intel Vtune Event CPU_CLK_UNHALTED.CORE

Ritratto di sssheetal
sssheetal
Ven, 23/07/2010 - 03:11

Here is a fundamental query about Vtune event CPU_CLK_UNHALTED.CORE . In case of multi-threaded applications running on multi-cores, how does Vtune count this event? For instance, if thread 1 of the multithreaded application runs for x cycles (unhalted) on core 1 and thread 2 runs for y cycles (unhalted) on core 2, what would be the value of CPU_CLK_UNHALTED.CORE ? Will it be (x+y) cycles?

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Ritratto di julia-fedorova (Intel)
julia-fedorova (Intel)
Ven, 23/07/2010 - 05:55

yes (by default).
and you can also see samples per core, per thread etc. look to the user guide doc and play with GUI.

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