------- Additional Comments From prthomas at drfccad dot cea dot fr 2005-01-28
17:02 -------
Subject: RE: Runtime hang in LAPACK routine SLAMC1 - i
n Quetzal benchmark suite
Bon soir François-Xavier,
Tu as raison! Même -O1 fait coincer le programme.
Je suis étonné quand-même que le "fix" est d'injecter d'un PRINT *,
"n'importe quoi" et, aussi, qu'il est légèrement impossible isoler le bogue.
Tu as des explications là-dessous?
Je vais afficher une réponse sur Bugzilla, avant de sortir.
Paul
-----Message d'origine-----
De : coudert at clipper dot ens dot fr [mailto:[EMAIL PROTECTED]
Envoyé : vendredi 28 janvier 2005 13:20
À : [EMAIL PROTECTED]
Objet : [Bug fortran/18714] Runtime hang in LAPACK routine SLAMC1 - in
Quetzal benchmark suite
------- Additional Comments From coudert at clipper dot ens dot fr
2005-01-28 12:19 -------
Did you try to compile this file without optimization (as is indicated in:
http://www.netlib.org/lapack/faq.html#1.26)? The code in the ?lam*.f files
is
used to determine the machine precision (which could be done easily in
Fortran >
77), and any level of optimization other than -O0 usually causes infinite
loops.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18714
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