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init_array: Leave a comment with my experiments on the second iteration

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Steffo 2022-11-16 01:42:37 +01:00
parent 7fcff5d127
commit 18466da754
Signed by: steffo
GPG key ID: 6965406171929D01
1 changed files with 3 additions and 2 deletions
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5
OpenMP/linear-algebra/kernels/atax/atax.c
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@ -30,8 +30,9 @@ static void init_array(int nx, int ny,
x[i] = i * M_PI; x[i] = i * M_PI;
} }
// Same here, but many times more /// Initialize the `A` matrix with [something?]
// #pragma omp parallel for num_threads(SOMETHING) schedule(static) // Using 4 threads here slows everything down: why?
// #pragma omp parallel for num_threads(4) schedule(static)
for (i = 0; i < nx; i++) for (i = 0; i < nx; i++)
for (j = 0; j < ny; j++) for (j = 0; j < ny; j++)
A[i][j] = ((DATA_TYPE)i * (j + 1)) / nx; A[i][j] = ((DATA_TYPE)i * (j + 1)) / nx;