Author: Remi Meier <[email protected]>
Branch:
Changeset: r271:a1256c44c37d
Date: 2014-07-22 15:01 +0200
http://bitbucket.org/pypy/benchmarks/changeset/a1256c44c37d/
Log: some other weird benchmark
diff --git a/multithread/common/abstract_threading.py
b/multithread/common/abstract_threading.py
--- a/multithread/common/abstract_threading.py
+++ b/multithread/common/abstract_threading.py
@@ -172,8 +172,10 @@
def _task(self, func, *args, **kwargs):
with self._cond:
try:
+ hint_commit_soon()
with atomic:
self._result = func(*args, **kwargs)
+ hint_commit_soon()
except Exception as e:
self._exception = e
finally:
diff --git a/multithread/perlin_noise/perlin_noise.py
b/multithread/perlin_noise/perlin_noise.py
new file mode 100644
--- /dev/null
+++ b/multithread/perlin_noise/perlin_noise.py
@@ -0,0 +1,95 @@
+# -*- coding: utf-8 -*-
+# from http://rosettacode.org/wiki/Perlin_noise#Python
+
+import sys
+import time, random
+from common.abstract_threading import (AtomicFuture,
+ atomic, Future, set_thread_pool, ThreadPool,
+ hint_commit_soon, print_abort_info)
+
+import itertools
+from collections import deque
+
+p = [None] * 512
+permutation = [151,160,137,91,90,15,
+ 131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,
+ 190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,
+ 88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,134,139,48,27,166,
+ 77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,
+ 102,143,54, 65,25,63,161, 1,216,80,73,209,76,132,187,208, 89,18,169,200,196,
+ 135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,250,124,123,
+ 5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,
+ 223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167, 43,172,9,
+ 129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,97,228,
+ 251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,
+ 49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
+ 138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180]
+
+for i in range(256):
+ p[256+i] = p[i] = permutation[i]
+
+def perlin_noise(x, y, z):
+ X = int(x) & 255 # FIND UNIT CUBE THAT
+ Y = int(y) & 255 # CONTAINS POINT.
+ Z = int(z) & 255
+ x -= int(x) # FIND RELATIVE X,Y,Z
+ y -= int(y) # OF POINT IN CUBE.
+ z -= int(z)
+ u = fade(x) # COMPUTE FADE CURVES
+ v = fade(y) # FOR EACH OF X,Y,Z.
+ w = fade(z)
+ A = p[X ]+Y; AA = p[A]+Z; AB = p[A+1]+Z # HASH COORDINATES OF
+ B = p[X+1]+Y; BA = p[B]+Z; BB = p[B+1]+Z # THE 8 CUBE CORNERS,
+
+ return lerp(w, lerp(v, lerp(u, grad(p[AA ], x , y , z ), # AND ADD
+ grad(p[BA ], x-1, y , z )), # BLENDED
+ lerp(u, grad(p[AB ], x , y-1, z ), # RESULTS
+ grad(p[BB ], x-1, y-1, z ))),# FROM 8
+ lerp(v, lerp(u, grad(p[AA+1], x , y , z-1 ), # CORNERS
+ grad(p[BA+1], x-1, y , z-1 )), # OF CUBE
+ lerp(u, grad(p[AB+1], x , y-1, z-1 ),
+ grad(p[BB+1], x-1, y-1, z-1 ))))
+
+def fade(t):
+ return t ** 3 * (t * (t * 6 - 15) + 10)
+
+def lerp(t, a, b):
+ return a + t * (b - a)
+
+def grad(hash, x, y, z):
+ h = hash & 15 # CONVERT LO 4 BITS OF HASH CODE
+ u = x if h<8 else y # INTO 12 GRADIENT DIRECTIONS.
+ v = y if h<4 else (x if h in (12, 14) else z)
+ return (u if (h&1) == 0 else -u) + (v if (h&2) == 0 else -v)
+
+
+
+
+def work(n, x):
+ res = []
+ hint_commit_soon()
+ for y in range(n):
+ with atomic:
+ for z in range(n):
+ res.append(perlin_noise(x, y, z))
+ hint_commit_soon()
+ return res
+
+
+def run(threads=2, n=60):
+ threads = int(threads)
+ n = int(n)
+
+ set_thread_pool(ThreadPool(threads))
+
+ res = []
+ for x in range(n):
+ res.append(Future(work, 400, x))
+ res = [f() for f in res]
+
+ # shutdown current pool
+ set_thread_pool(None)
+
+
+if __name__ == "__main__":
+ run()
_______________________________________________
pypy-commit mailing list
[email protected]
https://mail.python.org/mailman/listinfo/pypy-commit
