[petsc-users] PetscPrintf

[Xiangdong Liang]

On Tue, Dec 13, 2011 at 11:14 AM, Matthew Knepley <knepley at gmail.com> wrote:
> On Tue, Dec 13, 2011 at 10:13 AM, Xiangdong Liang <xdliang at gmail.com> wrote:
>>
>> Hello everyone,
>>
>> I am using PetscPrintf(PETSC_COMM_WORLD,.....) to print out some
>> information. When I run the program on multiple processors, some of
>> these calls are printed out multiple times, while other calls are
>> printed out once. Should it be printed only once if I use
>> PETSC_COMM_WORLD? Thanks.
>
>
> The print is executed only on rank 0 of the communicator provided.

I agree. This implies that the message can be printed out at most
once. Do you have any hints why I saw the message printed out multiple
times? Thanks.

Xiangdong


>
>    Matt
>
>>
>>
>> Xiangdong
>>
>> PS. I am using petsc-dev. My code works fine on real petsc-3.1-p8. I
>> just switched to complex petsc-dev and see this problem.
>
>
>
>
> --
> What most experimenters take for granted before they begin their experiments
> is infinitely more interesting than any results to which their experiments
> lead.
> -- Norbert Wiener