18 Jan
2006
18 Jan
'06
7:33 a.m.
Hi List, I'm running GHC and GCC head-to-head on the task of adding a bunch of long IOUArray-Vectors really fast. My machine is a Linux-ppc PowerBook and gets a runtime for the GHC-compiled binary that's about 10x as long as for GCC. Simon M. tells me this should be much better. Here are the precise command lines: $ gcc -O3 -o b-addvec-gcc b-addvec-c.c $ ghc -O2 -fasm --make -o b-addvec-ghc b-addvec-hs.hs $ time ./b-addvec-gcc 100000 elements 1000 real 0m5.130s user 0m4.466s sys 0m0.061s $ time ./b-addvec-ghc 100000 elements 1000 real 0m49.701s user 0m43.466s sys 0m0.586s (compiling with -fvia-C -optc-O3 runs only about 1 second longer) Can somebody shed some light on this? Regards, Sven Moritz