On Thursday 10 January 2008 03:12:30 Sebastien Dugue wrote:
> Perform some cleanups on matrix_mult:
>
> - remove unused ops local from matrix_mult().
> - remove unused timing calculation from matrix_mult().
> - streamline parenthesis use in matrix_mult().
> - cleanup stray '\' in the stats_container_save() calls.
> - remove one commented out join_threads().
>
> Signed-off-by: Sebastien Dugue <[EMAIL PROTECTED]>
Acked-by: Darren Hart <[EMAIL PROTECTED]>
> Cc: Darren Hart <[EMAIL PROTECTED]>
> Cc: Tim Chavez <[EMAIL PROTECTED]>
> ---
> testcases/realtime/func/matrix_mult/matrix_mult.c | 32
> +++++++------------- 1 files changed, 11 insertions(+), 21
> deletions(-)
>
> diff --git a/testcases/realtime/func/matrix_mult/matrix_mult.c
> b/testcases/realtime/func/matrix_mult/matrix_mult.c index
> 7c3c6b6..5577a51 100644
> --- a/testcases/realtime/func/matrix_mult/matrix_mult.c
> +++ b/testcases/realtime/func/matrix_mult/matrix_mult.c
> @@ -101,24 +101,16 @@ void matrix_mult(void)
> float B[MATRIX_SIZE][MATRIX_SIZE];
> float C[MATRIX_SIZE][MATRIX_SIZE];
> int i, j, k;
> - nsec_t start, end, delta;
> - int ops;
>
> matrix_init(A, B);
> - start = rt_gettime();
> - ops = 0;
> - for (i = 0; i < MATRIX_SIZE; i++)
> - {
> - for (j = 0; j < MATRIX_SIZE; j++)
> - {
> +
> + for (i = 0; i < MATRIX_SIZE; i++) {
> + for (j = 0; j < MATRIX_SIZE; j++) {
> for (k = 0; k < MATRIX_SIZE; k++) {
> C[i][j] += A[i][k]*B[k][j];
> - ops++;
> }
> }
> }
> - end = rt_gettime();
> - delta = end - start;
> }
>
> /* arg: the number of concurrent threads being run */
> @@ -201,10 +193,10 @@ int main(int argc, char *argv[])
> printf("StdDev: %.4f us\n", stats_stddev(&sdat));
> stats_hist(&shist, &sdat);
>
> - stats_container_save("sequential", "Matrix Multiplication
> Sequential Execution Runtime Scatter Plot",\ -
> "Iteration",
> "Runtime (us)", &sdat, "points");
> - stats_container_save("sequential_hist", "Matrix Multiplicatoin
> Sequential Execution Runtime Histogram",\ -
> "Iteration", "Runtime
> (us)", &shist, "steps");
> + stats_container_save("sequential", "Matrix Multiplication
> Sequential Execution Runtime Scatter Plot", +
> "Iteration",
> "Runtime (us)", &sdat, "points");
> + stats_container_save("sequential_hist", "Matrix Multiplicatoin
> Sequential Execution Runtime Histogram", +
> "Iteration",
> "Runtime (us)", &shist, "steps");
>
> // run matrix mult operation concurrently
> printf("\nConcurrent (%dx):\n", numcpus);
> @@ -244,18 +236,16 @@ int main(int argc, char *argv[])
> printf("StdDev: %.4f us\n", stats_stddev(&cdat));
> stats_hist(&chist, &cdat);
>
> - stats_container_save("concurrent", "Matrix Multiplication
> Concurrent Execution Runtime Scatter Plot",\ -
> "Iteration",
> "Runtime (us)", &cdat, "points");
> - stats_container_save("concurrent_hist", "Matrix Multiplication
> Concurrent Execution Runtime Histogram",\ -
> "Iteration", "Runtime
> (us)", &chist, "steps");
> + stats_container_save("concurrent", "Matrix Multiplication
> Concurrent Execution Runtime Scatter Plot", +
> "Iteration",
> "Runtime (us)", &cdat, "points");
> + stats_container_save("concurrent_hist", "Matrix Multiplication
> Concurrent Execution Runtime Histogram", +
> "Iteration",
> "Runtime (us)", &chist, "steps");
>
> printf("\nSeq/Conc Ratios:\n");
> printf("Min: %.4f\n", (float)smin/cmin);
> printf("Max: %.4f\n", (float)smax/cmax);
> printf("Avg: %.4f\n", (float)savg/cavg);
>
> - //join_threads();
> -
> ret = 1;
> if (savg > (cavg * criteria))
> ret = 0;
--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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