# PROCESSORS

Set to specify how many process slots this test requires. If not set, the default is `1` processor.

Denotes the number of processors that this test will require. This is typically used for MPI tests, and should be used in conjunction with the `ctest_test()` `PARALLEL_LEVEL` option.

This will also be used to display a weighted test timing result in label and subproject summaries in the command line output of `ctest(1)`. The wall clock time for the test run will be multiplied by this property to give a better idea of how much cpu resource CTest allocated for the test.

See also the `PROCESSOR_AFFINITY` test property.