End Parallel Runtime Scheduling Conflicts | Intel Software
17The Threading Composability Manager: In complex applications, it is not unusual that several threading models coexist. The Thread Composability Manager solves this problem through runtime coordination.
For now it deconflicts thread allocation between oneTBB and OpenMP, but more is planned.
With the latest 2021.11 release oneTBB adds the ability to coordinate resource allocation between the two runtimes for oneTBB and OpenMP ensuring that available CPU compute engines are used most efficiently to get great balanced performance from both oneTBB and OpenMP. The environment variable TCM_ENABLE=1 turns on the Composability Manager, a shared runtime coordinator that untangles the potentially conflicting requests from multiple runtimes and ensures smooth execution. You can you take advantage of oneTBB and OpenMP parallelism simultaneously without having to worry about resource management and coordination between multiple runtime thread pools
OpenMP* Optimization and Offload: https://intel.ly/3V4iQsJ
oneTBB Source and Code Samples: https://intel.ly/3UJdPo3
oneTBB Product Page: https://intel.ly/3WJFMyK
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End Parallel Runtime Scheduling Conflicts | Intel Software