Hello, Perhaps this is not the right place to ask this question because I am using PETSC as a library inside a third-part software. I am using feap[1] which uses PETSC and also Metis for parallel execution support.
I have a question related to petsc under 64bits. Feap is written in Fortran and uses 8 bytes integer data type. As far I know this is the normal behavior for AMD 64bit arch (perhaps this is not true). However when feap invokes PETSC libraries, a segfault error messages is shown. I read a little bit about it and the problems seems to be that Petsc uses 4 bytes integers (normal behaviour for IA32 arch) and there are some problems with pointer references which cause the segfault error message. Reading petsc documentation I found an option to compile petsc with 64 bit integer support --with-64-bit-indices=1. I tried it but when compiling several incompatibles error messages are shown. Moreover when I run the test I got a lot of errors like: ------------------------------------------------------------- Possible error running C/C++ src/snes/examples/tutorials/ex19 with 2 MPI processes See http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html [1]PETSC ERROR: --------------------- Error Message ------------------------------------ [1]PETSC ERROR: Null argument, when expecting valid pointer! [1]PETSC ERROR: Null Object: Parameter # 1! [1]PETSC ERROR: ------------------------------------------------------------------------ [1]PETSC ERROR: Petsc Release Version 2.3.3, Patch 3, Fri Jun 15 16:51:25 CDT 2007 HG revision: f051789beadcd36f77fb6111d20225e26ed7cc0d [1]PETSC ERROR: See docs/changes/index.html for recent updates. [1]PETSC ERROR: See docs/faq.html for hints about trouble shooting. [1]PETSC ERROR: See docs/index.html for manual pages. [1]PETSC ERROR: ------------------------------------------------------------------------ So my question is if it is posible to compile petsc with 64bits integer support? Besides --with-64-bit-indices option, is there another option I should add to get petsc tests work? My configuration is: AMD 64 petsc version 2.3.3-p3 Intel C an Fortran compilers v 9.1 MPICH2 1.0.7 I configured petsc with this options: /config/configure.py PETSC_ARCH=GNU/Linux-gnu-amd64 CC=icc FC=ifort --with-mpi-dir=/opt/mpich2/ --download-f-blas-lapack=1 --with-fc=ifort --with-64-bit-indices=1 Thanks in advance [1] Feap:http://www.ce.berkeley.edu/~rlt/feap/ -- Carlos A. Catania (AKA Harpo+) [FP] F152 8D50 6939 E21A 7A90 CDD4 AEE4 FA48 DF70 4D68
