Re: compilers: Compaq, Lahey, Intel

allelopath wrote:

This last year, I 'ported' a fortran program that had been compiled
(for years) on Compaq Visual Fortran to the Intel Fortran compiler and
it was kindofa headache. The Compaq compiler seemed sort of 'loose'.
It may have simply been a matter of compiler options selected, but
there were a couple of things that no compiler should let by that the
compaq did (imho).

Now, a guy is writing some new fortran code using the Lahey compiler.
Would a transition from Lahey to Intel be difficult? Are there
specific steps (compiler options? other?) to choose with the Lahey to
make that transition easier?

I would prefer if he use the Intel compiler outright (it is ultimately
what will be used when running). Are there compelling reasons for
doing so at the outset?

Selecting options for standards compliance should reduce discrepancies between the two compilers (or any others) to nearly nothing. I think it actually good to run code through two different compilers.

--

Gary Scott
mailto:garylscott@sbcglobal dot net

Fortran Library: http://www.fortranlib.com

Support the Original G95 Project: http://www.g95.org
-OR-
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If you want to do the impossible, don't hire an expert because he knows it can't be done.

-- Henry Ford
.

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