Projections shows idle time for offloaded work from OpenMP pragmas

[pplimport]

Original author: Joseph Hutter
Original issue: https://charm.cs.illinois.edu/redmine/issues/1928

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Projections does not monitor time spent on stolen tasks. See CPU time analysis on VTune vs Projections.

[ericjbohm]

Original date: 2018-06-04 19:15:14

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this is for a benchmark that uses openmp, no time is attributed in timeline. Whereas a timeline style view from vtune shows high utilization for the worker threads.

[stwhite91]

Original date: 2018-06-08 11:31:32

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src/conv-core/conv-taskQ.{h,C} has tracing code in it, so I'm not sure why that wouldn't show up in Projections. Can you see if the tracing output files for each PE has events with the following numbers in them?

#define TASKQ_CREATE_EVENTID 145
#define TASKQ_WORK_EVENTID 147
#define TASKQ_STEAL_EVENTID 149
#define TASKQ_QUEUE_STEAL_EVENTID 151

[pplimport]

Original author: Joseph Hutter
Original date: 2018-06-08 14:27:55

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in the sts file:
EVENT 145 taskq create work
EVENT 147 taskq work
EVENT 149 taskq steal
EVENT 151 taskq from queue steal
END

[pplimport]

Original author: Joseph Hutter
Original date: 2018-06-08 16:41:23

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Joseph Hutter wrote:

in the sts file:
EVENT 145 taskq create work
EVENT 147 taskq work
EVENT 149 taskq steal
EVENT 151 taskq from queue steal
END
but theres nothing per PE, this only shows up in the sts file