I do run my display on the same GPU. Is there a way to set that -i 0 command to a percentage of GPU usage? like 98%? instead of 100?
Nope, no fine granular control over GPU utilization is available in the current release.
What -i 1 actually does is as follows:
-It lets autotune only choose launch configurations that run for less than 1/30th of a second.
-because the scrypt kernel consists of two parts (A and B) and interactive mode performs
a sleep of 1 millisecond between each invocation, the GPU is able to perform draw calls
at least twice per 1/30th second -> so you should reach a screen update rate of 60 FPS.
So you can watch movies, TV in interactive mode without noticeable stutter. But the 60
FPS is only guaranteed if you use a launch config that autotune actually found in interactive
mode. This especially matters on slow GPUs where big kernel launches take considerable time.
My 560Ti 448 core edition (not overclocked) beats your card. 228 kHash/s here.
Must be the interactive mode?
I run it like this: -l F28x8 -C 1 -i 0 -m 1 -H 1
Also: try the cudaminer 32 bit binary for comparison. With some kernels it does run quite a bit
faster.
