pernode.c File Reference

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Functions
int	main ()

Function Documentation

main()

int main

(

)

Definition at line 20 of file pernode.c.

{
    int ncpu, nctr, i, actual_domain;
    int retval;
    int EventSet = PAPI_NULL;
    long long *values;
    long long elapsed_us, elapsed_cyc;
    PAPI_option_t options;

    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT ) {
        fprintf( stderr, "Library mismatch: code %d, library %d\n", retval,
                 PAPI_VER_CURRENT );
        exit( 1 );
    }

    if ( PAPI_create_eventset( &EventSet ) != PAPI_OK )
        exit( 1 );

    /* Set the domain as high as it will go. */

    options.domain.eventset = EventSet;
    options.domain.domain = PAPI_DOM_ALL;
    retval = PAPI_set_opt( PAPI_DOMAIN, &options );
    if ( retval != PAPI_OK )
        exit( 1 );
    actual_domain = options.domain.domain;

    /* This should only happen to an empty eventset */

    options.granularity.eventset = EventSet;
    options.granularity.granularity = PAPI_GRN_SYS_CPU;
    retval = PAPI_set_opt( PAPI_GRANUL, &options );
    if ( retval != PAPI_OK )
        exit( 1 );

    /* Malloc the output array */

    ncpu = PAPI_get_opt( PAPI_MAX_CPUS, NULL );
    nctr = PAPI_get_opt( PAPI_MAX_HWCTRS, NULL );
    values = ( long long * ) malloc( ncpu * nctr * sizeof ( long long ) );
    memset( values, 0x0, ( ncpu * nctr * sizeof ( long long ) ) );

    /* Add the counters */

    if ( PAPI_add_event( EventSet, PAPI_TOT_CYC ) != PAPI_OK )
        exit( 1 );

    if ( PAPI_add_event( EventSet, PAPI_TOT_INS ) != PAPI_OK )
        exit( 1 );

    elapsed_us = PAPI_get_real_usec(  );

    elapsed_cyc = PAPI_get_real_cyc(  );

    retval = PAPI_start( EventSet );
    if ( retval != PAPI_OK )
        exit( 1 );

    sleep( 5 );

    retval = PAPI_stop( EventSet, values );
    if ( retval != PAPI_OK )
        exit( 1 );

    elapsed_us = PAPI_get_real_usec(  ) - elapsed_us;

    elapsed_cyc = PAPI_get_real_cyc(  ) - elapsed_cyc;

    printf( "Test case: per node\n" );
    printf( "-------------------\n\n" );

    printf( "This machine has %d cpus, each with %d counters.\n", ncpu, nctr );
    printf( "Test case asked for: PAPI_DOM_ALL\n" );
    printf( "Test case got: " );
    if ( actual_domain & PAPI_DOM_USER )
        printf( "PAPI_DOM_USER " );
    if ( actual_domain & PAPI_DOM_KERNEL )
        printf( "PAPI_DOM_KERNEL " );
    if ( actual_domain & PAPI_DOM_OTHER )
        printf( "PAPI_DOM_OTHER " );
    printf( "\n" );

    for ( i = 0; i < ncpu; i++ ) {
        printf( "CPU %d\n", i );
        printf( "PAPI_TOT_CYC: \t%lld\n", values[0 + i * nctr] );
        printf( "PAPI_TOT_INS: \t%lld\n", values[1 + i * nctr] );
    }

    printf
        ( "\n-------------------------------------------------------------------------\n" );

    printf( "Real usec   : \t%lld\n", elapsed_us );
    printf( "Real cycles : \t%lld\n", elapsed_cyc );

    printf
        ( "-------------------------------------------------------------------------\n" );

    free( values );

    PAPI_shutdown(  );

    exit( 0 );
}

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