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In commit v2.8.0~170 (ENH: Added ctest test options PROCESSORS and RUN_SERIAL, 2009-09-07) CTest learned to track the number of processors allocated to running tests in order to balance it against the desired level of parallelism. Extend this idea by introducing a new `PROCESSOR_AFFINITY` test property to ask that CTest run a test with the CPU affinity mask set. This will allow a set of tests that are running concurrently to use disjoint CPU resources.
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643 B
ReStructuredText
12 lines
643 B
ReStructuredText
PROCESSOR_AFFINITY
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Set to a true value to ask CTest to launch the test process with CPU affinity
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for a fixed set of processors. If enabled and supported for the current
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platform, CTest will choose a set of processors to place in the CPU affinity
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mask when launching the test process. The number of processors in the set is
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determined by the :prop_test:`PROCESSORS` test property or the number of
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processors available to CTest, whichever is smaller. The set of processors
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chosen will be disjoint from the processors assigned to other concurrently
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running tests that also have the ``PROCESSOR_AFFINITY`` property enabled.
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