Forum > GPU crunching
V10/11 of modified SETI MB CUDA + opt AP package for full multi-GPU+CPU use
Raistmer:
Sum core numbers (each CPU core and each GPU core) and enter it as ncpus in cc_config.
Main rule - each core should run its own app instance.
@Slawek
V10/11 CUDA MB build from this thread fastest one for CUDA for the moment.
Morten:
Hi,
That's also what I did, which results in the second cuda-executable with constant 100% on one CPU.
4 CPU cores + 2 GPU cores (one GTX 295 card) => ncpus=6 .
I would expect the two cuda-apps to utilize an equal share on no less than 4% CPU each.
To me there seems to be a problem in the second cuda app's ability of feeding the second core, as it instead is using CPU.
Nvidia driver 182.08, Windows 7 x64..
Morten
Raistmer:
--- Quote from: Morten on 31 Mar 2009, 03:23:47 pm ---Hi,
That's also what I did, which results in the second cuda-executable with constant 100% on one CPU.
4 CPU cores + 2 GPU cores (one GTX 295 card) => ncpus=6 .
I would expect the two cuda-apps to utilize an equal share on no less than 4% CPU each.
To me there seems to be a problem in the second cuda app's ability of feeding the second core, as it instead is using CPU.
Nvidia driver 182.08, Windows 7 x64..
Morten
--- End quote ---
Check how many GPUs your BOINC sees.
What app do you use? If you use V10 pack - edit number_of_GPUs file and set 2 instead 1 there.
And make sure you don't use any kind of SLI mode.
Morten:
Hi,
This is what Boinc sees:
"31.03.2009 21:18:16 CUDA device: GeForce GTX 295 (driver version 18208, CUDA version 1.3, 896MB, est. 106GFLOPS)", which is correct, as there is only one physical card in system - with two GPU cores.
I use Raistmer's_opt_pack_V10a_x64_SSSE3_MB_CPU_GPU_team, as as said earlier - I've set the value to 2 in "number_of_GPUs" file.
Morten
Raistmer:
--- Quote from: Morten on 31 Mar 2009, 05:28:07 pm ---Hi,
This is what Boinc sees:
"31.03.2009 21:18:16 CUDA device: GeForce GTX 295 (driver version 18208, CUDA version 1.3, 896MB, est. 106GFLOPS)", which is correct, as there is only one physical card in system - with two GPU cores.
I use Raistmer's_opt_pack_V10a_x64_SSSE3_MB_CPU_GPU_team, as as said earlier - I've set the value to 2 in "number_of_GPUs" file.
Morten
--- End quote ---
Search SETI main forum when it will return from outage. There was thread about multicore GPUs and how to enable both cores.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version