Release 260111

scripts/waste.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+import os
+import time
+import numpy as np
+from multiprocessing import Process
+from setproctitle import setproctitle
+
+def waste(core):
+  os.sched_setaffinity(0, [core,])
+
+  m1 = np.zeros((200, 200)) + 0.8
+  m2 = np.zeros((200, 200)) + 1.2
+
+  i = 1
+  st = time.monotonic()
+  j = 0
+  while 1:
+    if (i % 100) == 0:
+      setproctitle(f"{core:3d}: {i:8d}")
+      lt = time.monotonic()
+      print(f"{core:3d}: {i:8d} {lt-st:f}  {j:.2f}")
+      st = lt
+    i += 1
+    j = np.sum(np.matmul(m1, m2))
+
+def main(gctx=None):
+  print("1-2 seconds is baseline")
+  for i in range(os.cpu_count()):
+    p = Process(target=waste, args=(i,))
+    p.start()
+
+if __name__ == "__main__":
+  main()