Check out this thread:
http://www.gpugrid.net/forum_thread.php?id=2327
Reading through it, and other other threads there, there is significance performance improvement to be gained by using the "SWAN_SYNC=0" environmental setting. It dedicates a thread to the GPU. Anyone tried this?
I did the other day and it definitely made a diffence. Gpu usage went from about 60% to 74%. The longer 8-12 hours wu's pay considerably better too. I have also read that you get a credit bonus for returning wu's promptly dunno about that.Originally Posted by zombie67
This is true. So when you crunch GPUGRID, you should keep a very small cache. Something like .5 days or less. That way it does not download the 2nd task until the 1st one is almost done.
So I can find the instructions again...
This is good. If you want maximum performance, you should dedicate one CPU core to feed the GPU. Use the SWAN_SYNC=0 environmental setting to achieve this. (control panel -> system -> advanced tab -> environment variables -> new (system variables) -> variable name: SWAN_SYNC value: 0 -> restart windows)
I tried this out.. My performance went from 70% to around 40%... however when I pause all my CPU tasks I shoot up to about 88%.
Is there a way to leave 2 cpu's open to feed my 2 gpu's while still churning cpu work units?
Yeah lower boincs CPU use by the "On Multi Processors Use XX%" option
Since I have an "8 core" system, every 12.5% = 1 CPU
on 4 cores, it's 25% per cpu
So if you want 2 CPUs free for 2 GPU tasks on a 4 core system, set the value to 50% (75% for an 8 core would leave 2 free)
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