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Re: [ptp-user] eclipse console eats output
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Christoph,
I'd say it's a buffering issue. Try putting a fflush(stdout) at the end of the program to see if that makes any difference.
Regards,
Greg
On Dec 12, 2012, at 4:55 AM, Christoph Pospiech <Christoph.Pospiech@xxxxxxxxxx> wrote:
> Hi,
>
> I stripped this down to a serial program with a serial run configuration. In my
> understanding I may have stripped off all PTP parts. Hence this mailing list
> may be the wrong place. If so, where should I post it instead ? Or any other
> hints or comments ?
>
> If I start the program MPI_Output as detailed below in a C/C++ run
> configuration with arguments "4 1", I see the following output in the console
> window.
>
> 11 Bytes written.
> 11 Bytes written.
> 11 Bytes written.
> 11 Bytes written.
> abcdefghij
>
> As you notice, there is only one copy of "abcdefghij". I would expect four of
> them, as I see when starting the same executable in an ordinary bash.
>
> cp@sirius:~/bench/DKRZ/MPI_Output/Debug_local$ pwd
> /home/cp/bench/DKRZ/MPI_Output/Debug_local
> cp@sirius:~/bench/DKRZ/MPI_Output/Debug_local$ ls
> helloa.d helloa.o makefile MPI_Output objects.mk sources.mk subdir.mk
> cp@sirius:~/bench/DKRZ/MPI_Output/Debug_local$ ./MPI_Output 4 1
> abcdefghij 11 Bytes written.
> abcdefghij 11 Bytes written.
> abcdefghij 11 Bytes written.
> abcdefghij 11 Bytes written.
> cp@sirius:~/bench/DKRZ/MPI_Output/Debug_local$
>
> Here is the program.
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
>
> char buf[] = "abcdefghij";
>
> int main(int argc, char* argv[]) {
> int num_bytes_written;
> int num_repeats = 1;
> int print_num_bytes = 0;
> int i;
>
> /* Inspect the command line for arguments */
> if ( argc > 1 ) {
> num_repeats = atoi(argv[1]);
> }
> if ( argc > 2 ) {
> print_num_bytes = atoi(argv[2]);
> }
>
> for (i=0; i<num_repeats; i++) {
> if (0>(num_bytes_written = write(1, buf, sizeof(buf)) )) {
> perror("Error in writing buffer: ");
> } else if (print_num_bytes) {
> fprintf(stderr," %d Bytes written.\n", num_bytes_written);
> }
> }
> return EXIT_SUCCESS;
> }
>
> --
>
> Mit freundlichen Grüßen / Kind regards
>
> Dr. Christoph Pospiech
> High Performance & Parallel Computing
> Phone: +49-351 86269826
> Mobile: +49-171-765 5871
> E-Mail: christoph.pospiech@xxxxxxxxxx
> -------------------------------------------------------------------------------------------------------------------------------------------
> IBM Deutschland GmbH / Vorsitzender des Aufsichtsrats: Martin Jetter
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>
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