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| author | da-woods <dw-git@d-woods.co.uk> | 2023-02-06 17:21:34 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-02-06 17:21:34 +0000 |
| commit | b24286d35aaaf1318cd2bebb10e3e16d72965a5b (patch) | |
| tree | bb863a8ad56c0db793e0ade8187dba0dfe34e7b9 /docs/examples/tutorial/parallelization/normalize.py | |
| parent | ac6dd0a28b84f333f0203a63ff5fab4da32001b6 (diff) | |
| download | cython-b24286d35aaaf1318cd2bebb10e3e16d72965a5b.tar.gz | |
[docs] Parallelization tutorial (#5184)
Parallelization tutorial to try to explain prange/parallel in a little more user-friendly way
Diffstat (limited to 'docs/examples/tutorial/parallelization/normalize.py')
| -rw-r--r-- | docs/examples/tutorial/parallelization/normalize.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/docs/examples/tutorial/parallelization/normalize.py b/docs/examples/tutorial/parallelization/normalize.py new file mode 100644 index 000000000..0519be4d4 --- /dev/null +++ b/docs/examples/tutorial/parallelization/normalize.py @@ -0,0 +1,16 @@ +from cython.parallel import parallel, prange +import cython +from cython.cimports.libc.math import sqrt + +@cython.boundscheck(False) +@cython.wraparound(False) +def normalize(x: cython.double[:]): + i: cython.Py_ssize_t + total: cython.double = 0 + norm: cython.double + with cython.nogil, parallel(): + for i in prange(x.shape[0]): + total += x[i]*x[i] + norm = sqrt(total) + for i in prange(x.shape[0]): + x[i] /= norm |