Visible to Intel only — GUID: GUID-79C3F4A7-07D3-44A6-B325-3EFD4A97059B
Visible to Intel only — GUID: GUID-79C3F4A7-07D3-44A6-B325-3EFD4A97059B
Avoiding Nested Parallelization
Nested parallelization may occur if you use a threaded Intel® Integrated Performance Primitives Cryptography (Intel® IPP Cryptography) function in a multithreaded application. Nested parallelization may cause performance degradation because of thread oversubscription.
For applications that use OpenMP* threading, nested threading is disabled by default, so this is not an issue.
However, if your application uses threading created by a tool other than OpenMP*, you must disable multi-threading in the threaded Intel IPP Cryptography function to avoid this issue.
Disabling Multi-threading (Recommended)
The best option to disable multi-threading is to link your application with the Intel® IPP Cryptography single-threaded (non-threaded) libraries included in the default package and discontinue use of the separately downloaded multi-threaded versions.
You may also call the ippcpSetNumThreads function with parameter 1, but this method may still incur some OpenMP* overhead.
Product and Performance Information |
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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201 |