use cmake_host_system_information instead as this actually gives the number of physical cores, which is the relevant number for MPI

Author: siggmo

test/CMakeLists.txt

@@ -6,17 +6,13 @@ set(FANS_EXECUTABLE $<TARGET_FILE:FANS_main>)
 
 # determine MPI process count. The discretization of the test geometry allows for max. 8 processes.
 set(FANS_N_MPI_PROCESSES_MAX 8)
-ProcessorCount(FANS_CORES_AVAILABLE_1)
-cmake_host_system_information(RESULT FANS_CORES_AVAILABLE_2 QUERY NUMBER_OF_PHYSICAL_CORES)
-message(STATUS "ProcessorCount: ${FANS_CORES_AVAILABLE_1}")
-message(STATUS "cmake_host_system_information: ${FANS_CORES_AVAILABLE_2}")
-
-set(FANS_CORES_AVAILABLE 2)
+cmake_host_system_information(RESULT FANS_CORES_AVAILABLE QUERY NUMBER_OF_PHYSICAL_CORES)
 if (FANS_N_MPI_PROCESSES_MAX LESS FANS_CORES_AVAILABLE)
     set(FANS_N_MPI_PROCESSES ${FANS_N_MPI_PROCESSES_MAX})
 else()
     set(FANS_N_MPI_PROCESSES ${FANS_CORES_AVAILABLE})
 endif()
+message(STATUS "Will use ${FANS_N_MPI_PROCESSES} processes for MPI test cases.")
 
 set(FANS_TEST_CASES
     LinearThermalIsotropic