Cython but still GIL bound threaded example.

Author: mikeckennedy

.gitignore

@@ -139,3 +139,4 @@ src/11-cython/.idea/misc.xml
 src/11-cython/.idea/modules.xml
 src/11-cython/.idea/workspace.xml
 greeter.c
+math_core.c

src/11-cython/perf/compute_cython.py

@@ -1,11 +1,11 @@
 import datetime
-import math
+import math_core
 from threading import Thread
 import multiprocessing
 
 
 def main():
-    do_math(1)
+    math_core.do_math(1)
 
     t0 = datetime.datetime.now()
 
@@ -15,7 +15,7 @@ def main():
     processor_count = multiprocessing.cpu_count()
     threads = []
     for n in range(1, processor_count + 1):
-        threads.append(Thread(target=do_math,
+        threads.append(Thread(target=math_core.do_math,
                               args=(30_000_000 * (n - 1) / processor_count,
                                     30_000_000 * n / processor_count),
                               daemon=True)
@@ -31,12 +31,12 @@ def main():
     )
 
 
-def do_math(start=0, num=10):
-    pos = start
-    k_sq = 1000 * 1000
-    while pos < num:
-        pos += 1
-        math.sqrt((pos - k_sq) * (pos - k_sq))
+# def do_math(start=0, num=10):
+#     pos = start
+#     k_sq = 1000 * 1000
+#     while pos < num:
+#         pos += 1
+#         math.sqrt((pos - k_sq) * (pos - k_sq))
 
 
 if __name__ == '__main__':

src/11-cython/perf/compute_it.py

@@ -7,7 +7,7 @@ def main():
 
     t0 = datetime.datetime.now()
 
-    do_math(num=30000000)
+    do_math(num=30_000_000)
 
     dt = datetime.datetime.now() - t0
     print("Done in {:,.2f} sec.".format(dt.total_seconds()))

src/11-cython/perf/math_core.pyx

@@ -0,0 +1,8 @@
+import math
+
+def do_math(start=0, num=10):
+    pos = start
+    k_sq = 1000 * 1000
+    while pos < num:
+        pos += 1
+        math.sqrt((pos - k_sq) * (pos - k_sq))

src/11-cython/perf/setup.py

@@ -0,0 +1,6 @@
+from distutils.core import setup
+from Cython.Build import cythonize
+
+setup(
+    ext_modules=cythonize("math_core.pyx")
+)