Oracle® Solaris Studio 12.4: Performance Analyzer

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Updated: January 2015

Limitations on OpenMP Profiling

Collecting OpenMP data during the execution of the program can be very expensive. You can suppress that cost by setting the SP_COLLECTOR_NO_OMP environment variable. If you do so, the program will have substantially less dilation, but you will not see the data from slave threads propagate up to the caller, and eventually to main(), as it normally will if that variable is not set.

OpenMP profiling functionality is available only for applications compiled with the Oracle Solaris Studio compilers because it depends on the Oracle Solaris Studio compiler runtime. For applications compiled with GNU compilers, only machine-level call stacks are displayed.