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Re: -freduce-all-givs and fortran


Andreas wrote:

>    168.wupwise       1600     418         382*     1600     417         384*
>    171.swim          3100    1213         256*     3100    1040         298*
>    172.mgrid         1800    1017         177*     1800    1117         161*
>    173.applu         2100     759         277*     2100     813         258*
>    200.sixtrack      1100     577         191*     1100     534         206*

vs:

168.wupwise    444      360
171.swim      1012      306
172.mgrid     1036      174
173.applu      816      258
200.sixtrack   556      198

OK, so swim indeed gets most optimised "without" loop optimisation.

:-)

Someone who shall remain nameless showed me a (small) part of swim that
should fall wholly within the "fair use" clause.  I mailed it home to
study it there (where I actually have access to g77 :-)

However, I think I already know what's wrong ...

Sixtrack is more complicated, but as its source code is available
online, it might be possible to track that one down too.

"Back ... in the USSR !"

--
Toon Moene, KNMI, PO Box 201, 3730 AE De Bilt, The Netherlands.
Tel. +31302206443, Fax +31302210407,  e-mail moene@knmi.nl
URL: http://www.knmi.nl/hirlam


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