Questions and Answers :
GPU applications :
Hybrid system not using CUDA App.
Message board moderation
Author | Message |
---|---|
Nighthawk[TECH] Send message Joined: 7 May 01 Posts: 5 Credit: 2,078,360 RAC: 0 |
I am running BOINC 6.4.5 on a system with an integrated GeForce 8200 onboard, plus a PCI-express 8500GT with 512MB. BOINC detects two CUDA capable devices (but classifies both as 8200's) but is not using the CUDA version of the application. I have the latest combined drivers from NVidia with CUDA support, and CUDA 2.0 installed, but no joy. Other pertinent info: AMD 64X2 5000+ Black Edition 3Gb system ram Windows XP Pro SP3 32 bit |
Nighthawk[TECH] Send message Joined: 7 May 01 Posts: 5 Credit: 2,078,360 RAC: 0 |
To follow up on my own post, and perhaps shed some light on this issue, I used GPU-Z to check out my GPUs. The integrated GPU was reporting only 64MB of memory. I attempted to increase the frame buffer size in the BIOS to 256MB but this caused Windows XP to crash upon loading. I then disabled the integrated GPU in the BIOS, allowing use of the PCI-E 8500GT only. BOINC detected a single CUDA device, correctly identified the model, and began using it to process. Now, even though I am attached to other BOINC projects, my CPU is only loaded at 50% (i.e. only one of my two cores is actively processing non-CUDA data). I get the feeling that, although the CUDA workunits are only using ~2-3% of my available CPU cycles, having CUDA active is excluding BOINC from establishing another instance of CPU-based processing. Any thoughts on how to extract the maximum number of effective cycles from all my computers various processers? |
Byron S Goodgame Send message Joined: 16 Jan 06 Posts: 1145 Credit: 3,936,993 RAC: 0 |
|
Nighthawk[TECH] Send message Joined: 7 May 01 Posts: 5 Credit: 2,078,360 RAC: 0 |
Thanks, that worked a treat :) |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.