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Fix build_jobs exceeding number of cores

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All documentation mentions that `build_jobs` is limited by the number of
cores available in the system. This is also enforced when setting it via
`--jobs`. However, when setting it via `config.yaml`, it can exceed the
number of cores available, making builds run out of memory.
This commit is contained in:
Michael Kuhn 2019-07-15 08:25:01 +02:00 committed by Peter Scheibel
parent 3f83a2a7d8
commit a7e915d38b
1 changed files with 1 additions and 0 deletions
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lib/spack/spack/build_environment.py
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@ -406,6 +406,7 @@ def _set_variables_for_single_module(pkg, module):
"""Helper function to set module variables for single module.""" """Helper function to set module variables for single module."""
jobs = spack.config.get('config:build_jobs') if pkg.parallel else 1 jobs = spack.config.get('config:build_jobs') if pkg.parallel else 1
jobs = min(jobs, multiprocessing.cpu_count())
assert jobs is not None, "no default set for config:build_jobs" assert jobs is not None, "no default set for config:build_jobs"
m = module m = module