From 678fab50280b647d95213a9695d07c49542696f2 Mon Sep 17 00:00:00 2001
From: zhang <zch921005@126.com>
Date: Sat, 21 May 2022 14:23:49 +0800
Subject: 0521

---
 hpc/mlti_process.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 hpc/mlti_process.py

(limited to 'hpc/mlti_process.py')

diff --git a/hpc/mlti_process.py b/hpc/mlti_process.py
new file mode 100644
index 0000000..4a129c4
--- /dev/null
+++ b/hpc/mlti_process.py
@@ -0,0 +1,18 @@
+import os
+from multiprocessing import Process, Pool, Manager
+from random import random
+
+
+def monte_carlo_pi(i, n=5000_0000):
+    print('epoch: {}'.format(i))
+    cnt = 0
+    for i in range(n):
+        x, y = random(), random()
+        if x**2 + y**2 <= 1:
+            cnt += 1
+    return 4*cnt/n
+
+
+if __name__ == '__main__':
+    pool = Pool(os.cpu_count()//2)
+    pool.map(monte_carlo_pi, range(10))
-- 
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