Nvidia memory detection problem

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Andrew

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Joined: 20 Jan 11
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Message 36488 - Posted: 20 Jan 2011, 19:18:09 UTC

Starting BOINC client version 6.10.58 for i686-pc-linux-gnu
Processor: 4 AuthenticAMD AMD Phenom(tm) 9850 Quad-Core Processor [Family 16 Model 2 Stepping 3]
OS: Linux: 2.6.36-gentoo-r5
Memory: 3.96 GB physical, 15.27 GB virtual
NVIDIA GPU 0: GeForce 8500 GT (driver version unknown, CUDA version 3020, compute capability 1.1, 255MB, 29 GFLOPS peak)



Note: Linux is in 32-bit mode.
NVIDIA Driver Version: 260.19.29

It appears that the client is detecting the video card as a 256mb card when it is a 512mb card. Any ideas why?

If you need anything further just ask.

Image link doesn't appear to be working can be found here: http://206.251.66.46/Graphics%20Card%20Info.png

(Screen capture from the Graphics Card Information)
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Profile Jord
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Joined: 29 Aug 05
Posts: 15390
Netherlands
Message 36491 - Posted: 20 Jan 2011, 21:41:07 UTC - in response to Message 36488.  

It appears that the client is detecting the video card as a 256mb card when it is a 512mb card. Any ideas why?

Is it a real physical card with that much memory on it, or is it an (embedded) on the motherboard chip, with 256MB RAM immediately on the chip and you're able to increase the memory from your computer's physical memory?

The thing here is this, BOINC checks how much physical memory the GPU has. Any memory added in other ways, isn't counted. On some (HP, Dell, Compaq) systems, videocards come with 128-256MB memory by themselves, while the rest is added through the PC's physical RAM. BOINC will on these systems only see the original 128-256MB.
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Andrew

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Joined: 20 Jan 11
Posts: 2
United States
Message 36492 - Posted: 20 Jan 2011, 22:03:50 UTC - in response to Message 36491.  

It appears that the client is detecting the video card as a 256mb card when it is a 512mb card. Any ideas why?

Is it a real physical card with that much memory on it, or is it an (embedded) on the motherboard chip, with 256MB RAM immediately on the chip and you're able to increase the memory from your computer's physical memory?


Physical card with 512MB, nothing added from system memory.
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Message boards : GPUs : Nvidia memory detection problem

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