[Trilinos-Users] AztecOO: not enough memory for ILUT
Tiziano Passerini
tiziano.passerini at polimi.it
Wed Feb 27 15:35:19 MST 2008
Hi,
many thanks for your quick answers,
Il giorno 27/feb/08, alle ore 13:10, Schiek, Richard L ha scritto:
> Tiziano,
>
> Are you sure you’re building 64bit binaries? Many 64 bit systems
> will run both 32 and 64 bit binaries. Check the compiler
> documentation to be sure. You should be able to use the “file
> <binary_name>” to check this. Here if I do “file myProg” and myProg
> is a 64 bit program then I get:
>
> myProg: ELF 64-bit LSB executable, AMD x86-64
ok that's what I get:
./test: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for
GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux
2.6.9, not stripped
actually I do have the feeling that my problem has something to do
with 64-bit binaries, but I thought I managed to control every stage
of the compilation process.
I'm using gcc 4.2.3, which I compiled from scratch. I also checked
each one of the libraries which are dynamically linked by my
executable, and thay all are 64-bit shared objects.
maybe I should force somehow the use of 64 bit int? I don't know if
this is feasible with gcc...
Il giorno 27/feb/08, alle ore 15:23, Heroux, Michael A ha scritto:
> Tiziano,
>
> Can you tell me what parameter values you are setting for ILUT?
> Also, are you performing any local reordering for the
> preconditioner, e.g., RCM ?
>
> Mike
>
I use ILUT fill-in = 12 and drop = 1e-5. I'm not performing local
reordering - I didn't think about that :) I think I'll also have a
deeper look at AztecOO documentation...
Tiziano
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