I have been attempting to get Cudaminer to work with both of my GPU's in Sli (780M), but each time it starts up it will only detect either GPU 0 or 1
ever tried running two separate instances of cudaminer? one with -d 0 and one with -d 1 maybe?
do tools like CUDA-z and GPU-z show both chips separately?
Christian
They are detected independently in any other program. I did run two separate batch files of cudaminer for the same pool for each GPU and that does work, but one of the instances accepts blocks much quicker than the other. CGminer utilizes both GPU's in the same instance and works quickly as well, albeit with a hashrate of about 65 khash/s per card. I would like to get both cards running within the same instance in cudaminer but I cannot find a configuration that allows it.
I'm running a laptop with two 680m's and experiencing a similar issue. Autodetect was pretty lame in what it chose (it tried but I was only getting like 80kh/s) and right now I'm running two instances, one per GPU, one at K14x16, the other at K70x2 - the K14x16 one works well at around 117kh/s, the 70x2 config is a little slower at around 104kh/s
I tried running both with K14x16, however, I have a feeling I was running out of VRAM (these are the 2GB 680m's) because my drivers would crash and both cards would drop to like 5kh/s
Memory utilization at the current settings is around 87% on both cards according to HWinfo
I'm happy with around 215kh/s from a laptop with NVidia GPUs :]
That said, if anyone knows a config that may work better on the 680m, I'm all ears
And it isn't actually profitable, considering the local electricity costs and the increased mining difficulty. But I am doing this for fun.
