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memory bleeding


   See http://www-unix.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html
number 12

   You can run for say a few iterations with the options
-malloc_debug -malloc_dump (in  PETSc 2.3.1. in early releases it had
different names). At PetscFinalize() PETSc will print all the memory
it has allocated that has not been freed and where it was allocated.
This can help determine what objects are not being freed.

   Barry


Hi,

I use PETSc, and after 5000 (more or less) iteations in which i solve a little
matrix
(30x30) my swap is totally used!!! I'm sure that when I create my matrices I
destroy
them. Could you help me about it? What happens? What thing I do bad?

Mat K
MatCreateSeqAIJ(PETSC_COMM_SELF, dim, dim, 9 , PETSC_NULL, &K);
MatSetFromOptions(K);
MatSetOption(K, MAT_SYMMETRIC);
MatSetOption(K, MAT_ROW_ORIENTED);
MatSetOption(K, MAT_IGNORE_ZERO_ENTRIES);
MatSetOption(K, MAT_NEW_NONZERO_ALLOCATION_ERR);

( I use KSP solve, created and destroyed)

MatDestroy(K);


Thanks,
jordi
-----------
Jordi Marcé-Nogué
Dept. Resistència de Materials i Estructures a l'Enginyeria
Universitat Politècnica de Catalunya (UPC)

Edifici T45 - despatx 137
ETSEIAT (Terrassa)

phone: +34 937 398 728
mail: jordi.marce@xxxxxxx