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4682 Discussions

Setting sampling rate via command line when using amplxe-cl?

Jason_Spangler
Beginner
141 Views
Hi Intel,
How do we set the sampling rate during hotspot sampling to something higher when running our server processes via the command line amplxe-cl program? We cant find a command line option to do so.
Thanks!
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2 Replies
Vladimir_T_Intel
Moderator
141 Views

Hi,

We do not allow changing the sample rate for the Hotspot analysis collection. The reason is that we have chosen a sample rate which is a good compromise between overhead/disturbance and the statistical correctness of data. In case you need a higher resolution, use the lightweight-hotspots playing with the Sample After value (SAV) for the CPU clockticks event. But be careful - too frequent sampling may hang the system.

Vladimir_T_Intel
Moderator
141 Views
Also, take a look at this thread
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