Extra swapping when using gfortran 4.3-20061224 vs gfortran 4.2-20061211

[Toon Moene]

Toon Moene wrote:

> Toon Moene wrote:
> 
>> A run of HIRLAM for which the grid was carefully tuned (half a year 
>> ago) to the RAM size of my laptop suddenly started to swap two weeks 
>> ago when using gfortran 4.3 as the compiler.
> 
> I compiled a key routine using --param max-aliased-vops=1000 (as opposed 
> to the default 50).  The result was much reduced stack usage.
> 
> So I'll first try to compile the whole enchilada (oh, it's with one l) 
> with that option before probing the list again.

Well, this looked promising, but didn't help.

BTW, I had to lower the expectations to max-alias-vops=100

Anything over 100 had the compiler choke (as in SEGFAULT) on one or 
another routine.

However, swapping continued ...

-- 
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
A maintainer of GNU Fortran: http://gcc.gnu.org/fortran/
Who's working on GNU Fortran: 
http://gcc.gnu.org/ml/gcc/2006-01/msg00000.html