[petsc-users] Petsc memory consumption keep increasing in my loop

Hello, I have problem with a code i'am working on. To illustrate my problem, here is an example: int main(int argc, char *argv[]) {     PetscErrorCode ierr;     ierr = PetscInitialize(&argc, &argv, (char *)0, NULL);     if (ierr)         return ierr;     int i = 0;     for (i = 0; i < 1; i++)     {         Mat A;         ierr = MatCreate(PETSC_COMM_WORLD, &A);         CHKERRQ(ierr);         ierr = MatSetSizes(A, 16, 16, PETSC_DECIDE,PETSC_DECIDE);         CHKERRQ(ierr);         ierr = MatSetFromOptions(A);         CHKERRQ(ierr);         ierr = MatSetUp(A);         CHKERRQ(ierr);         ierr = MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);         CHKERRQ(ierr);         ierr = MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);         CHKERRQ(ierr);         /// SOME CODE HERE....         MatDestroy(&A);     }     FILE *fPtr;     fPtr = fopen("petsc_dump_file.txt", "a");     PetscMallocDump(fPtr);     fclose(fPtr);     ierr = PetscFinalize();     CHKERRQ(ierr);     return 0; } The problem is , in the loop, the memory consumption keep increasing till the end of the program. I checked memory leak with PetscMallocDump, and found out that the problem may be due to matrix creation. I'am new to Petsc and i don't know if i'am doing something wrong. Thanks Médane