Hello Python programmers,
Here's an update on my conundrum: When compiling and building CPython
2.7.3 for Win32 from source I see a 30% performance loss from the precompiled
binaries in the Python 2.7.3 MSI. Everything that I do gets the same results.
I've tried a standard release build. I've tried a PGO build by running
build_pgo.bat. I've tried changing every compile and link optimization flag
manually. I've tried VS 2008 Professional with SP1 and hotfixes applied, and
then without. I've even tried building on two different PCs just in case. I
always get the same results: 30% less performance than the precompiled
binaries. Frankly, I'm out of things to try. All that I can imagine at this
point is that maybe a different edition of VS 2008 creates a 30% faster
executable than the Professional edition I have access to? If anyone has
specific knowledge of the exact build machine hardware and compiler version
used to create the Win32 Python 2.7.3 precompiled binaries I would greatly
appreciate knowin
g how to duplicate that verbatim. Thanks.
Sincerely,
Arah Leonard
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