Re: x64 speed

2009-02-05 Thread Robin Becker
Martin v. Löwis wrote: Is it the x64 working faster at its design sizes Another guess (still from the darkness of not having received the slightest clue what the test actually does): if it creates integers in range(2**32, 2**64), then they fit into a Python int on AMD64-Linux, but require a

Re: x64 speed

2009-02-05 Thread Robin Becker
... -- Ran 193 tests in 27.841s OK real0m28.150s user0m26.606s sys 0m0.917s [rpt...@localhost tests]$ magical how the total python time is less than the real time. time(1) also measures the Python startup

Re: x64 speed

2009-02-04 Thread Robin Becker
Martin v. Löwis wrote: I follow David's guess that Linux does better IO than Windows (not knowing anything about the benchmark, of course) I originally thought it must be the vmware host stuff offloading IO to the second core, but watching with sysinternals didn't show a lot of extra stuff

Re: x64 speed

2009-02-04 Thread Floris Bruynooghe
On Feb 4, 10:14 am, Robin Becker ro...@reportlab.com wrote: [rpt...@localhost tests]$ time python25 runAll.py . . -- Ran 193 tests in

Re: x64 speed

2009-02-04 Thread Martin v. Löwis
Is it the x64 working faster at its design sizes Another guess (still from the darkness of not having received the slightest clue what the test actually does): if it creates integers in range(2**32, 2**64), then they fit into a Python int on AMD64-Linux, but require a Python long on 32-bit

Re: x64 speed

2009-02-04 Thread M.-A. Lemburg
On 2009-02-04 11:14, Robin Becker wrote: Martin v. Löwis wrote: I follow David's guess that Linux does better IO than Windows (not knowing anything about the benchmark, of course) I originally thought it must be the vmware host stuff offloading IO to the second core, but watching with

x64 speed

2009-02-03 Thread Robin Becker
Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks like the vmware emulated system is much faster. Is it the x64 working faster

Re: x64 speed

2009-02-03 Thread Tim Daneliuk
Robin Becker wrote: Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks like the vmware emulated system is much faster. Is

Re: x64 speed

2009-02-03 Thread David Cournapeau
On Wed, Feb 4, 2009 at 2:36 AM, Robin Becker ro...@reportlab.com wrote: Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks

Re: x64 speed

2009-02-03 Thread Martin v. Löwis
Robin Becker wrote: Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks like the vmware emulated system is much faster. Is

Re: x64 speed

2009-02-03 Thread Diez B. Roggisch
Robin Becker schrieb: Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks like the vmware emulated system is much faster. Is it

Re: x64 speed

2009-02-03 Thread Paul Rubin
Robin Becker ro...@reportlab.com writes: so it looks like the vmware emulated system is much faster. Is it the x64 working faster at its design sizes or perhaps the compiler or could it be the vmware system caching all writes etc etc? For the red hat x64 build the only special configuration

Re: x64 speed

2009-02-03 Thread Martin v. Löwis
I follow David's guess that Linux does better IO than Windows (not knowing anything about the benchmark, of course) I originally thought it must be the vmware host stuff offloading IO to the second core, but watching with sysinternals didn't show a lot of extra stuff going on with the vm

Re: x64 speed

2009-02-03 Thread Robin Becker
Diez B. Roggisch wrote: Robin Becker schrieb: Whilst doing some portability testing with reportlab I noticed a strange speedup for our unittest suite with python2.5 host win32 xp3 unittest time=42.2 seconds vmware RHEL x64 unittest time=30.9 seconds so it looks like the vmware emulated

Re: x64 speed

2009-02-03 Thread Robin Becker
Tim Daneliuk wrote: .. Which vmware product? vmware server -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list

Re: x64 speed

2009-02-03 Thread Robin Becker
Martin v. Löwis wrote: . I follow David's guess that Linux does better IO than Windows (not knowing anything about the benchmark, of course) Regards, Martin I originally thought it must be the vmware host stuff offloading IO to the second core, but watching with sysinternals didn't show

Re: x64 speed

2009-02-03 Thread Robin Becker
Paul Rubin wrote: Robin Becker ro...@reportlab.com writes: so it looks like the vmware emulated system is much faster. Is it the x64 working faster at its design sizes or perhaps the compiler or could it be the vmware system caching all writes etc etc? For the red hat x64 build the only special