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TSan spuriously reports for any OpenMP application a race on the initialization of a runtime internal mutex: ``` Atomic read of size 1 at 0x7b6800005940 by thread T4: #0 pthread_mutex_lock <null> (a.out+0x43f39e) #1 __kmp_resume_64 <null> (libomp.so.5+0x84db4) Previous write of size 1 at 0x7b6800005940 by thread T7: #0 pthread_mutex_init <null> (a.out+0x424793) #1 __kmp_suspend_initialize_thread <null> (libomp.so.5+0x8422e) ``` According to @AndreyChurbanov this is a false positive report, as the control flow of the runtime guarantees the ordering of the mutex initialization and the lock: https://software.intel.com/en-us/forums/intel-open-source-openmp-runtime-library/topic/530363 To suppress this report, I suggest the use of TSAN_OPTIONS='ignore_uninstrumented_modules=1'. With this patch, a runtime warning is provided in case an OpenMP application is built with Tsan and executed without this Tsan-option. Reviewed By: jdoerfert Differential Revision: https://reviews.llvm.org/D70412
66 lines
1.7 KiB
Plaintext
66 lines
1.7 KiB
Plaintext
This file is a partial list of people who have contributed to the LLVM/openmp
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project. If you have contributed a patch or made some other contribution to
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LLVM/openmp, please submit a patch to this file to add yourself, and it will be
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done!
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The list is sorted by surname and formatted to allow easy grepping and
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beautification by scripts. The fields are: name (N), email (E), web-address
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(W), PGP key ID and fingerprint (P), description (D), and snail-mail address
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(S).
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N: Adam Azarchs
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W: 10xgenomics.com
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D: Bug fix for lock code
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N: Carlo Bertolli
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W: http://ibm.com
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D: IBM contributor to PowerPC support in CMake files and elsewhere.
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N: Diego Caballero
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E: diego.l.caballero@gmail.com
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D: Fork performance improvements
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N: Sunita Chandrasekaran
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D: Contributor to testsuite from OpenUH
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N: Barbara Chapman
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D: Contributor to testsuite from OpenUH
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N: University of Houston
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W: http://web.cs.uh.edu/~openuh/download/
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D: OpenUH test suite
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N: Intel Corporation OpenMP runtime team
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W: http://openmprtl.org
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D: Created the runtime.
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N: John Mellor-Crummey and other members of the OpenMP Tools Working Group
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E: johnmc@rice.edu
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D: OpenMP Tools Interface (OMPT)
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N: Matthias Muller
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D: Contributor to testsuite from OpenUH
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N: Tal Nevo
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E: tal@scalemp.com
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D: ScaleMP contributor to improve runtime performance there.
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W: http://scalemp.com
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N: Pavel Neytchev
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D: Contributor to testsuite from OpenUH
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N: Steven Noonan
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E: steven@uplinklabs.net
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D: Patches for the ARM architecture and removal of several inconsistencies.
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N: Joachim Protze
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E: protze@itc.rwth-aachen.de
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D: OpenMP Tools Interface, Archer tool
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N: Alp Toker
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E: alp@nuanti.com
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D: Making build work for FreeBSD.
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N: Cheng Wang
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D: Contributor to testsuite from OpenUH
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