[Beowulf] Re: the comparison between OpenMP and MPI
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Toon Moene toon at moene.indiv.nluug.nlMon May 21 12:00:51 PDT 2007
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Florent Calvayrac wrote: > Without optimization no registers were used so the code was giving > correct results and at O1 code was optimized on a line per line basis > and not procedure-wide. > > So even commercial code can be wrong... As a former boss of mine put it, some 25 years ago: "You think the compiler is perfect ? Hah, it's just another large program with its own bugs !" -- Toon Moene - e-mail: toon at moene.indiv.nluug.nl - phone: +31 346 214290 Saturnushof 14, 3738 XG Maartensdijk, The Netherlands At home: http://moene.indiv.nluug.nl/~toon/ Who's working on GNU Fortran: http://gcc.gnu.org/ml/gcc/2007-01/msg00059.html
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