Release Notes

This document contains changes of oneTBB compared to the last release.

🚨 Known Limitations

The oneapi::tbb::info namespace interfaces might unexpectedly change the process affinity mask on Windows* OS systems (see https://github.com/open-mpi/hwloc/issues/366 for details) when using hwloc version lower than 2.5.
Using a hwloc version other than 1.11, 2.0, or 2.5 may cause an undefined behavior on Windows OS. See https://github.com/open-mpi/hwloc/issues/477 for details.
The NUMA topology may be detected incorrectly on Windows* OS machines where the number of NUMA node threads exceeds the size of 1 processor group.
On Windows OS on ARM64*, when compiling an application using oneTBB with the Microsoft* Compiler, the compiler issues a warning C4324 that a structure was padded due to the alignment specifier. Consider suppressing the warning by specifying /wd4324 to the compiler command line.
C++ exception handling mechanism on Windows* OS on ARM64* might corrupt memory if an exception is thrown from any oneTBB parallel algorithm (see Windows* OS on ARM64* compiler issue: https://developercommunity.visualstudio.com/t/ARM64-incorrect-stack-unwinding-for-alig/1544293.
When CPU resource coordination is enabled, tasks from a lower-priority task_arena might be executed before tasks from a higher-priority task_arena.

NOTE: To see known limitations that impact all versions of oneTBB, refer to oneTBB Documentation.

Fixed parallel_for_each algorithm behavior for iterators defining iterator_concept trait instead of iterator_category.
Fixed the redefinition issue for std::min and std::max on Windows* OS (GitHub* #832).
Fixed the incorrect binary search order in TBBConfig.cmake.
Enabled the oneTBB library search using the pkg-config tool in Conda packages.

Fixed the compiler warning for missing virtual destructor. Contributed by Elias Engelbert Plank (https://github.com/oneapi-src/oneTBB/pull/1215).