Thread 'BOINC GPU performance Linux/Windows, virtualization and comparison of ATI/nVidia shader units performance'

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Miha Furlan

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Joined: 20 Dec 10
Posts: 2
Slovenia
Message 36164 - Posted: 20 Dec 2010, 13:40:29 UTC

BOINC is reporting 100+ GFLOPS under Windows (32 bit) and 50 GFLOPS under 64 bit Linux for my GPU. Why is this difference and what can I do? I have Radeon HD 4550 graphics card running collatz on both platforms and difference is quite noticable (~30% slower on Linux).

Can I do anything to equalize performance? Also as a side question, can I run BOINC GPU tasks inside VirtualBox or VMWare with success or they don't expose GPU properly?

Last question: how does ATI/nVidia GPU's compare in BOINC regarding number of shader units/cores? As I have read, for 3D nVidia needs around 5 times less shaders compared to ATI to achieve same performance because of the way they are connected together. Is this also the case with GPU computing or this is completely different thing?

Thank you in advance for you answers!
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ProfileGundolf Jahn

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Joined: 20 Dec 07
Posts: 1069
Germany
Message 36166 - Posted: 20 Dec 2010, 16:49:31 UTC - in response to Message 36164.  

Are you running the same driver versions under the two operating systems?

Gruß,
Gundolf
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Miha Furlan

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Joined: 20 Dec 10
Posts: 2
Slovenia
Message 36167 - Posted: 20 Dec 2010, 17:30:31 UTC - in response to Message 36166.  

Yes, I am using latest drivers (10.12) on both OSes and latest BOINC versions as well.
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Message boards : BOINC client : BOINC GPU performance Linux/Windows, virtualization and comparison of ATI/nVidia shader units performance

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