FORTRAN compilers
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Daniel Kidger Daniel.Kidger at quadrics.comFri Nov 23 10:15:30 PST 2001
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>Right : compilation and test of LINPACK on our system >gives at least 50% failure of precision tests with pgf77, >versus 0% with g77. However, when it works, the >generated code is at least 20% faster than with >other compilers. That does not prove that pgf77 is broken! What if linpack (./xhpl) has a bug whereby a variable is not initialised to zero? pgf77 may be actingly correctly by not having to initialise it and g77 may be over-keen in setting all undeclared values to be zero. Yours, Daniel. (ps. yes I _do_ suspect this is actually true - I have spurious problems with the Intel complier on xhpl too) -------------------------------------------------------------- Dr. Dan Kidger, Quadrics Ltd. daniel.kidger at quadrics.com One Bridewell St., Bristol, BS1 2AA, UK 0117 915 5505 ----------------------- www.quadrics.com --------------------
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