| <html>
|
| <head>
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| <title>num_pes</title>
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| </head>
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| <h2 id="top">num_pes</h2>
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| <h4>Purpose</h4>
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|
|
|
|
| <p>Returns the number of processing elements (PEs) running in the job.
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| </p>
|
|
|
| <h4>C syntax</h4>
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|
|
| <pre>
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| #include <shmem.h>
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|
|
| int num_pes(void);
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|
|
| </pre>
|
|
|
| <h4>Description</h4>
|
|
|
| <div class="ledi">
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| <p>The num_pes function returns the number of PEs running in an application. </p>
|
|
|
| <h4>IBM NOTES</h4>
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| <div class="ledi">
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| <dl>
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| <p>For current implementation, this value is equal to the MP_PROCS environment variable.</p>
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| </dd>
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| </dl>
|
|
|
| <h4>C examples</h4>
|
| <pre>
|
| #include <shmem.h>
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| #include <stdio.h>
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|
|
|
|
| int main (int argc, char* argv[])
|
| {
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| int total_tasks = -1;
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| int my_task = -1;
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|
|
| start_pes(0);
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|
|
| total_tasks = _num_pes();
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|
|
| if (total_tasks <= 0) {
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| printf("FAILED\n");
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| return 0;
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| } else {
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| printf("number of pes is %d\n", total_tasks);
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| }
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|
|
| my_task = _my_pe();
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|
|
| if (my_task < 0){
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| printf("FAILED\n");
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| return 0;
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| } else {
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| printf("my pe id is %d\n", my_task);
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| }
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|
|
| printf("PASSED\n");
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| return 0;
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| }
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|
|
| </pre>
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|
|
| <h4>Related information</h4>
|
|
|
| <p>Subroutines: shmem_init, start_pes, my_pe
|
| </p>
|
| <hr><a href="apiIndex.html">OpenSHMEM API Index</a> |
| </html> |
