[docs] Parallelization tutorial (#5184)

Parallelization tutorial to try to explain prange/parallel in a little more user-friendly way

1 files changed, 16 insertions, 0 deletions

diff --git a/docs/examples/tutorial/parallelization/parallel_sin.py b/docs/examples/tutorial/parallelization/parallel_sin.py
new file mode 100644
index 000000000..be6cbc030
--- /dev/null
+++ b/docs/examples/tutorial/parallelization/parallel_sin.py
@@ -0,0 +1,16 @@
+from cython.parallel import prange
+import cython
+from cython.cimports.libc.math import sin
+
+import numpy as np
+
+@cython.boundscheck(False)
+@cython.wraparound(False)
+def do_sine(input: cython.double[:,:]):
+    output : cython.double[:,:] = np.empty_like(input)
+    i : cython.Py_ssize_t
+    j : cython.Py_ssize_t
+    for i in prange(input.shape[0], nogil=True):
+        for j in range(input.shape[1]):
+            output[i, j] = sin(input[i, j])
+    return np.asarray(output)