mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
9a17051872
It is common to have a default soft process limit, at least on some families of Linux distributions, of 1024. This is normally more than enough, but if you have many cores, and you're running tests that create many threads, this can become a problem. My POWER7 development machine has 48 cores, and when running the lld regression tests, which often want to create up to 48 threads, I run into problems. lit, by default, will want to run 48 tests in parallel, and 48*48 < 1024, and so many tests fail like this: terminate called after throwing an instance of 'std::system_error' what(): Resource temporarily unavailable or lit fails like this when launching a test: OSError: [Errno 11] Resource temporarily unavailable lit can easily detect this situation and attempt to repair it before launching tests (by raising the soft process limit to something that will allow ncpus^2 threads to be created), and should do so to prevent spurious test failures. This is the follow-up to this thread: http://lists.llvm.org/pipermail/llvm-dev/2015-October/090942.html llvm-svn: 249161 |
||
|---|---|---|
| .. | ||
| examples | ||
| lit | ||
| tests | ||
| utils | ||
| lit.py | ||
| MANIFEST.in | ||
| README.txt | ||
| setup.py | ||
| TODO | ||
=============================== lit - A Software Testing Tool =============================== lit is a portable tool for executing LLVM and Clang style test suites, summarizing their results, and providing indication of failures. lit is designed to be a lightweight testing tool with as simple a user interface as possible.