Re: readArray is faster than unsafeRead

On Tue, May 29, 2007 at 02:42:22PM -0700, Scott Dillard wrote:

You're right. I broke them when experimenting to see where the cycles were going. I've fixed them, but the other pair of functions, named gaussElim2, were correct and the issue remains that unsafeRead appears slower than readArray.

Separating the functions into different executables and compiling with GHC 6.6 without profiling, the unsafe one is definitely faster: ./safe 45.73s user 0.06s system 96% cpu 47.238 total ./unsafe 6.65s user 0.02s system 91% cpu 7.295 total Thanks Ian