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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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59 lines
1.4 KiB
59 lines
1.4 KiB
#!/usr/bin/env python2.7 |
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# |
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# Copyright 2017 gRPC authors. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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from scipy import stats |
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import math |
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_THRESHOLD = 1e-10 |
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def scale(a, mul): |
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return [x * mul for x in a] |
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def cmp(a, b): |
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return stats.ttest_ind(a, b) |
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def speedup(new, old): |
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if (len(set(new))) == 1 and new == old: return 0 |
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s0, p0 = cmp(new, old) |
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if math.isnan(p0): return 0 |
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if s0 == 0: return 0 |
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if p0 > _THRESHOLD: return 0 |
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if s0 < 0: |
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pct = 1 |
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while pct < 101: |
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sp, pp = cmp(new, scale(old, 1 - pct / 100.0)) |
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if sp > 0: break |
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if pp > _THRESHOLD: break |
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pct += 1 |
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return -(pct - 1) |
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else: |
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pct = 1 |
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while pct < 100000: |
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sp, pp = cmp(new, scale(old, 1 + pct / 100.0)) |
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if sp < 0: break |
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if pp > _THRESHOLD: break |
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pct += 1 |
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return pct - 1 |
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if __name__ == "__main__": |
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new = [1.0, 1.0, 1.0, 1.0] |
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old = [2.0, 2.0, 2.0, 2.0] |
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print speedup(new, old) |
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print speedup(old, new)
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