#10678: integer-gmp's runS seems unnecessarily expensive -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 (CodeGen) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by hvr): * cc: bgamari (added) Comment: Interesting, there's some (albeit not perfect) overlap between the improved nofib cases with the regressed nofib cases noted in CompilerPerformance#Comparinginteger-gmp0.5and1.0 E.g. {{{ bernouilli -0.3% -8.2% -2.4% -2.4% 0.0% fasta -0.3% -5.1% -0.1% -0.1% 0.0% kahan -0.2% -11.4% +0.3% +0.3% 0.0% primetest -0.3% -18.5% -3.5% -3.6% 0.0% rsa -0.3% -19.8% 0.060 0.060 0.0% scs -0.4% -3.2% -2.0% -2.0% +14.3% symalg -0.3% -2.1% 0.024 0.024 0.0% wave4main -0.2% -4.1% -2.1% -2.1% -5.3% }}} vs ([https://gist.githubusercontent.com/bgamari/5de75ac998a346b70ce8/raw/ffc2bd4f... /nofib-integer-gmp-comparison.txt source]) {{{ Program Size Allocs Runtime Elapsed TotalMem bernouilli -68.7% +15.3% 0.092 0.092 0.0% fasta -76.4% -0.1% -0.6% -0.7% 0.0% kahan -74.0% +39.9% 0.131 0.131 0.0% primetest -67.5% +49.9% 0.050 0.050 0.0% rsa -67.9% +53.4% 0.012 0.012 0.0% scs -60.2% +6.8% +1.2% +1.2% 0.0% symalg -63.1% +9.5% 0.005 0.005 0.0% wave4main -69.5% +0.0% 0.109 0.109 0.0% }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10678#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler