Intel Fortran compiler
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Mark Hahn hahn at coffee.psychology.mcmaster.caThu May 3 09:38:04 PDT 2001
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> Celeron 466, with RH 7.1, kernel 2.4.3. so g77 was one of RH's funky "2.96+" snapshots? > g77 (gnu compiler) time: 2:45 minutes > ifc (intel compiler) time: 1:37 minutes > > g77 options: -O2 -mpentiumpro -funroll-all-loops I find that -funrill-all-loops usually gives *worse* performance. in fact, -Os is the most commonly-recommended flag on the gcc dev list. -fomit-frame-pointer is an obvious other one.
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