Re: [Freeon-users] Ktrax-preprocessed.f with --enable-parallel-clones

[Jose R. Valverde]

More on this:

        this error seems not to be related with --enable-parallel-clones
as it appears when I try to compile FreeON without that option as well
on an x86_64, and it didn't appear earlier on an x86 (32bit) architecture.

        So, it rather looks like a problem with the 64bit compiler (I am
using gfortran). More on this if and when I sort this out in more detail
but it would be nice if more information about the development status of
FreeON where available on the user list.

                                j

On Wed, 19 Oct 2011 10:15:54 +0200
"Jose R. Valverde" <address@hidden> wrote:
> Hi all,
> 
>       I am trying to compile freeON with (some) MPI support. I know.
> 
>       Anyway, when I use --enable-parallel-clones it breaks compiling
> Ktrax-preprocessed.f, which being just a huge list of trivial assignment
> statements it shouldn't. The reason given is that the compiler runs out
> of virtual memory. This is likely unrelated to freeON, as this machine
> has 72GB RAM and when the compiler breaks it has allocated only about
> 2.9Gb of them.
> 
>       Now, this looks in all respects as a problem with the optimizer,
> and indeed, if I compile the file manually turning off all specific
> optimization options, it compiles OK and the build proceeds:
> 
>        mpif90 -g -O2 -march=native  -I. -I../Modules -I. -I..
>        -I../OneE -I../Modules/MMA/LookUpTables_800_6x   -c -o KTrax.o
>        KTrax-preprocessed.f
> 
> instead of
> 
>       mpif90 -g -O2 -march=native -msse -msse2 -mfpmath=sse
>       -ffast-math -ftree-vectorize -pipe -ffixed-line-length-none -I.
>       -I../Modules -I. -I.. -I../OneE
>       -I../Modules/MMA/LookUpTables_800_6x   -c -o KTrax.o
>       KTrax-preprocessed.f
> 
> I haven't tried many combinations to see which is the exact compiler
> flag causing this behavior, but I guess while this may be a bit slower,
> it will still work and be not too bad (-O2 remains).
> 
>       Well, the compilation is going on now, and once it is finished
> I'll run the validation checks and let you know, but in principle it
> should pass.
> 
>                               j
> 
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