Forum > GPU crunching
What to use to only do MB on GPU and AP on CPU
Brutus:
I'm experiencing the same issue with the latest 6.6.20, 6.6.21 & now 6.6.23.
It works perfectly when you do NOT have Astropulse units.
I set Boinc to use 100% of the CPUs and it runs 4 instances of the Seti Enhanced application. 3 of them run on the CPU (Q6600). I of them uses 0% CPU resources but it appears that CPU core feeds the GPU work unit (GTX260).
Works flawlessly. 4 units at a time, no issues.
However, as soon as I downloaded AP units, Boinc starts running 4 instances of AP and no GPU.
I found that by editing the cc_config.xml to 5 ncpus, I could get Boinc to run 4 AP units and 1 GPU unit. It sort of solves the problem but it slows the GPU units and makes the computer sluggish. Only solution I have found is to suspend all but 3 AP units and to control it manually. (don't use a cc_config.xml for this to work) I get 3 AP and 1 GPU this way
What would be perfect would be 3 AP and 1 GPU units just like it does with the SETI Enhanced Units with out manual intervention.
The other alternative that I have considered but not tried yet is to set Boinc to 100% of the CPUs 75% of the time and then run 5 ncpus in the cc_config.xml. That should run 4APs and 1 GPU unit and give some CPU resources to still run the PC but it will increase the CPU turn around time for a unit. Overall should be the same.
Anyone have a better solution?
Claggy:
See this thread Which version?
I've been running a similar app_info (to the one I've posted) since about Boinc 6.6.15, and always have 2 CPU WU's and one Cuda WU's processing.
Claggy
Brutus:
Thanks, Followed the guide and it seems to work now.
The Borg:
Hi there,
Now to this forum, usually post over at anandtech - DC.
I would like to know how to get all 4 cores of my 2 x GTX 295's crunching data. So far I have tried SLI on and off, GPUGRID and SETI, but the most I can get is 2 WU's, and from waht I can tell, only one per card.
Any comments or suggestions please?
Brutus:
I have 2 single GPU video cards so I can't tell you what to do on the GTX295s. In various posts I've seen, I believe turning off SLI is a must.
As I stated, I followed the guide, pulled in the Astropulse executables etc then I modified the app_info.xml to use Raistmaister's modified cuda client rather than the std client.
I was originally using the team mod executable when things didn't work for me. Along the way, I upgraded to Boinc 6.6.23, changed to files recommended by Claggy and finally modified the .xml file. Somewhere along the way it started working.
By the way, ( this is just my opinion of course )
- those 2 cards have a TDP of 295 watts each, right??
- where I am, power is 11.4c/KWatt hr, thats 2 x .295 x 24 x .114 = $1.61 US$/day. That's a nasty electric bill.
That's too much for me but I can't know that the math is right. Let us know once you get it working..
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