#9570: cryptarithm1 (normal) has bimodal runtime -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: NoFib benchmark | Version: 7.9 suite | Operating System: Keywords: | Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Difficulty: Unknown | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- I was investigating performance numbers for cryptarithm1 in #8199, I noticed that the numbers for this benchmark were curiously bimodal. Here are two representative samples from both sides of the distribution. {{{ ../../runstdtest/runstdtest ./cryptarithm1 -o1 cryptarithm1.stdout -o1 cryptarithm1.stdout -ghc-timing ; ../../runstdtest/runstdtest ./cryptarithm1 -o1 cryptarithm1.stdout -o1 cryptarithm1.stdout -ghc- timing ; ../../runstdtest/runstdtest ./cryptarithm1 -o1 cryptarithm1.stdout -o1 cryptarithm1.stdout -ghc-timing ; ../../runstdtest/runstdtest ./cryptarithm1 -o1 cryptarithm1.stdout -o1 cryptarithm1.stdout -ghc-timing ; ../../runstdtest/runstdtest ./cryptarithm1 -o1 cryptarithm1.stdout -o1 cryptarithm1.stdout -ghc- timing ; real 0m0.676s user 0m0.660s sys 0m0.013s <> real 0m0.610s user 0m0.603s sys 0m0.007s <> }}} I don't have any further resolution on the problem yet. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9570 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler