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Posted to dev@arrow.apache.org by "Ben Kietzman (Jira)" <ji...@apache.org> on 2020/03/05 16:02:00 UTC

[jira] [Created] (ARROW-8012) [C++][CI] Set CTEST_PARALLEL_LEVEL to $concurrency

Ben Kietzman created ARROW-8012:
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             Summary: [C++][CI] Set CTEST_PARALLEL_LEVEL to $concurrency
                 Key: ARROW-8012
                 URL: https://issues.apache.org/jira/browse/ARROW-8012
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++, CI
    Affects Versions: 0.16.0
            Reporter: Ben Kietzman
             Fix For: 1.0.0


Currently the default {{test}} target runs serially while {{unittest}} arbitrarily uses 4 threads. On many systems that's suboptimal. The environment variable {{CTEST_PARALLEL_LEVEL}} can be set to run tests in parallel, and we should probably have a good default for it (like the hardware concurrency)



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