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Don't allow ninja job pool sizes to be negative

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If the job pool size becomes negative, ninja treats
it as an absurdly large positive integer and
errors out.
This commit is contained in:
Robert Maynard 2019-12-19 08:44:12 -05:00
parent 8c96769e81
commit 53158aa2ea
1 changed files with 6 additions and 4 deletions
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10
CMake/VTKmWrappers.cmake
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@ -123,13 +123,15 @@ function(vtkm_setup_job_pool)
# compilation units to be built at the same time.
#
# We try to allocate a pool size where we presume each compilation process
# will require 4GB of memory. To allow for other NON VTK-m jobs we leave at
# least 8GB of memory as 'slop'.
# will require 3GB of memory. To allow for other NON VTK-m jobs we leave at
# least 3GB of memory as 'slop'.
cmake_host_system_information(RESULT vtkm_mem_ QUERY TOTAL_PHYSICAL_MEMORY)
math(EXPR vtkm_pool_size "(${vtkm_mem_}/4096)-2")
if (vtkm_pool_size EQUAL 0)
math(EXPR vtkm_pool_size "(${vtkm_mem_}/3072)-1")
if (vtkm_pool_size LESS 1)
set(vtkm_pool_size 1)
endif ()
set_property(GLOBAL APPEND
PROPERTY
JOB_POOLS vtkm_pool=${vtkm_pool_size})