Merge pull request #508 from therault/parsec-update #1554

Job	Run time
macos-latest: clang++ Release Threads	31m 38s
macos-latest: clang++ Release OneTBB	3m 37s
macos-latest: clang++ Release PaRSEC	3m 48s
ubuntu-20.04: /usr/bin/g++-9 Release Threads	31m 23s
ubuntu-20.04: /usr/bin/g++-9 Release OneTBB	2m 29s
ubuntu-20.04: /usr/bin/g++-9 Release PaRSEC	2m 41s
macos-latest: clang++ Debug Threads	44m 47s
macos-latest: clang++ Debug OneTBB	2m 54s
macos-latest: clang++ Debug PaRSEC	3m 59s
ubuntu-20.04: /usr/bin/g++-9 Debug Threads	1h 14m 18s
ubuntu-20.04: /usr/bin/g++-9 Debug OneTBB	2m 50s
ubuntu-20.04: /usr/bin/g++-9 Debug PaRSEC	3m 22s
	3h 27m 46s

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