[petsc-users] Segmentation fault in PetscInitialize()

[Zou (Non-US), Ling]

Hmmm... I guess you cannot do PetscInitialize multiple times.

Ling


On Tue, Jun 25, 2013 at 5:47 PM, Zou (Non-US), Ling <ling.zou at inl.gov>wrote:

> 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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