1.23
2.0
main
test-branch
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Last change
on this file since 1aaefd4 was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
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| 1 | !!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
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| 2 | !!! Copyright (c) 2017-20, Lawrence Livermore National Security, LLC
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| 3 | !!! and DataRaceBench project contributors. See the DataRaceBench/COPYRIGHT file for details.
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| 4 | !!!
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| 5 | !!! SPDX-License-Identifier: (BSD-3-Clause)
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| 6 | !!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
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| 7 |
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| 8 | !The workshare construct is only available in Fortran. The workshare spreads work across the threads
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| 9 | !executing the parallel. There is an implicit barrier. The nowait nullifies this barrier and hence
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| 10 | !there is a race at line:29 due to nowait at line:26. Data Race Pairs, AA@25:9 and AA@29:!5.
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| 11 |
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| 12 |
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| 13 | program DRB169_workshare_orig_yes
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| 14 | use omp_lib
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| 15 | implicit none
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| 16 |
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| 17 | integer :: AA, BB, CC, res
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| 18 |
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| 19 | BB = 1
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| 20 | CC = 2
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| 21 |
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| 22 | !$omp parallel
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| 23 | !$omp workshare
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| 24 | AA = BB
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| 25 | AA = AA+CC
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| 26 | !$omp end workshare nowait
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| 27 |
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| 28 | !$omp workshare
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| 29 | res = AA*2
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| 30 | !$omp end workshare
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| 31 | !$omp end parallel
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| 32 |
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| 33 | if (res /= 6) then
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| 34 | print*,res
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| 35 | end if
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| 36 | end program
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