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Some performance comparision between x86 and x64 Windows-based apps

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Crunch3r:
I've made some little changes to the windows x64 apps today. Those new ones should be again a bit faster now.
We need to test them a bit and after that, we can relase them.

 ;)

speedimic:
And what about Windows compared to Linux?
Did someone run run any tests in that direction?

mic.

Crunch3r:

--- Quote from: speedimic on 17 Aug 2007, 10:20:50 am ---And what about Windows compared to Linux?
Did someone run run any tests in that direction?

mic.

--- End quote ---

Not that i'm aware off. (can't run a reliable test myself cuz i only got the 32/64 bit linux in vmware)

The only statement i can make is that the 64 bit linux app runs faster than the 32 bit one on intel.
Same for the windows x64 comared to the windows 32 bit one on intel (as you can see in Raistmers post).

If you have the oportunety to dual boot win/linux (32 or 64 bit) and do a bench test, it would be interesting to see.

Though one has to keep in mind that the windows and linux code is not identical in some ways.
For instance linux uses a splitted optimized SSE code for FP rounding/chirping etc...

Raistmer:
Great news! Will await new 64-bit app :)
BTW, here is a "flawless victory" ;) for 64-bit app on real long WU. As one can see both hosts are using optimized application, and my core2 duo @2.13 MHz slightly outperforms more faster
Core2 Quad CPU @ 2.40GHz
http://setiathome.berkeley.edu/workunit.php?wuid=148428035
Both are running Windows.
Some info about comparision of highly optimized app under Windows and Linux would be very interesting. Havent some modern Linux installation to do such tests right now, maybe someone can perform such comparision?

2 michael37 Your listing is probably not for WU-1 cause it contains no spikes AFAIK. Could you post elapsed time for test WU-1 calculation on your system (with different 2.4 apps or with fastets one at leat) ?

michael37:

--- Quote from: Raistmer on 18 Aug 2007, 02:51:11 pm ---2 michael37 Your listing is probably not for WU-1 cause it contains no spikes AFAIK. Could you post elapsed time for test WU-1 calculation on your system (with different 2.4 apps or with fastets one at leat) ?

--- End quote ---
You're right, this is just a random "production" workunit.  My 64-bit Windows servers are remotely management servers where Boinc runs only at night, so the best I can is to drop in a new application, go to sleep, wake up and watch how the application did :) 

I got to turn my new Core 2 Duo laptop into the test computer.  I have 64-bit Linux and 32-bit Windows Vista currently installed.  I need to get 64-bit Windows OS (anyone got a spare version?) on it so I can test the full range of applications on the same hardware...

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