CTEST_PARALLEL_LEVEL
This is a CMake Environment Variable. Its initial value is taken from the calling process environment.
Specify the number of tests for CTest to run in parallel. See ctest(1)
for more information on parallel test execution.
© 2000–2020 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.15/envvar/CTEST_PARALLEL_LEVEL.html