[petsc-users] Segmentation fault in PetscInitialize()

[Zou (Non-US), Ling]

I have petsc 3.3p5 on my Mac.

  PetscInitialize(NULL, NULL, NULL, NULL);


It seems working fine here.


Ling


On Tue, Jun 25, 2013 at 4:54 PM, Longxiang Chen <suifengls at gmail.com> wrote:

> Dear all,
>
> I try to use ksp to solve Ax=b.
>
> ALL programs are in fortran, except petscsolve() in c.
>
> Because petscsolve() is a sub-function that I don't have argc and argv.
> So I use following statement to set the options.
>
>         PetscInitialize(NULL, NULL, NULL, help);
>  PetscOptionsSetValue("-ksp_type", "bcgs");
>  PetscOptionsSetValue("-pc_type", "jacobi");
> PetscOptionsSetValue("-ksp_max_it", "100");
>  PetscOptionsInsert(NULL, NULL, NULL);
>
> The program works like this:
>
> main()
> Init()
> LOOP:
> call MULTI (calculate Jacob A)
> -> call petscsolve( solve Ax=b)
> -> check solution
> Goto LOOP
>
> The first iteration works well that I can calculate the solution x from
> petscsolve().
> But when it enters the second iteration of LOOP, it has Segmentation fault:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x000000000d8e11f0 in ?? ()
> (gdb) bt
> #0  0x000000000d8e11f0 in ?? ()
> #1  0x0000000001a32625 in PMPI_Barrier ()
> #2  0x0000000000bdd2b7 in PetscLogBegin_Private () at
> /home/lchen/ft-petsc/src/sys/logging/plog.c:234
> #3  0x0000000000bdd876 in PetscLogBegin () at
> /home/lchen/ft-petsc/src/sys/logging/plog.c:278
> #4  0x00000000004c1f6c in PetscOptionsCheckInitial_Private ()
>     at /home/lchen/ft-petsc/src/sys/objects/init.c:494
> *#5  0x00000000004cbe6d in PetscInitialize (argc=0x0, args=0x0, file=0x0,
> *
> *    help=0x20a9f00 "Replace with PETSC_solve") at
> /home/lchen/ft-petsc/src/sys/objects/pinit.c:779*
> #6  0x00000000004991e3 in petscsolve_ (N=0x20c7d28, RHS=0x9813500,
> WKAREA=0x4902c80, NZ=0xc0629e0,
>     IA=0xb8b9ac0, JA=0x754e520, CO=0x9871ac0, TOL=0x22c0528,
> ITMAX=0x71ef048, ITER=0x7fffffffd3a8,
>     ERR=0x7fffffffd3b0, IERR=0x7fffffffd3b8, IUNIT=0x1bcb310,
> RWORK=0x57d2000, LENW=0x49f4cc0,
>     IWORK=0x3e32860, LENIW=0x49f4cc8) at petscsolve.c:184
> #7  0x000000000044ed15 in lineq () at t2cg22.f:1698
> #8  0x000000000046a24c in cycit () at t2f.f:2055
> #9  0x00000000004483d3 in tough2 () at t2cg22.f:625
> #10 0x000000000040bfcc in main ()
>
> Are there any problems with PetscInitialize(NULL, NULL, NULL, help)?
> Thank you.
>
> Best regards,
> Longxiang Chen
>
>
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