bboyBladeJ

Brook+/CAL timing problem

Discussion created by bboyBladeJ on Feb 20, 2008
Latest reply on Feb 22, 2008 by michael.chu
I'm trying to measure performance of Brook+ samples shipped with the SDK, but it seems that setting BRT_RUNTIME to "cal" or "cpu" does not affect the timing information at all.

Any idea what might be wrong? We're running on a HD3870, latest drivers.

The code executes correctly and the timings obtained using Setup(0), Start(0), Stop(0) and PrintTime(0) are simply the same regardless of BRT_RUNTIME.

StreamRead and StreamWrite were excluded from measurements, only kernel call is between Start(0) and Stop(0).

Thank you.

PS. You seem to have a bug in the SDK's timer.cpp file, where PrintTime always outputs timer 0th time as opposed to timer ith time.

Outcomes