One follow up on GPU: You mentioned SETI. However, in the other guides I thought to have read to go for low number of users. Amicable Numbers is one of the lowest and SETI the second highest. Is Amicable Numbers not made for single precision cards and I should look at SETI because of that or did I get something else wrong? Thanks for your help!
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All GPU projects are fine for single precision cards, except for MilkyWay@Home where the double precision cards will shred all the competition.
You are right that SETI has lots of users, but many are inactive or running only their CPUs on the project. I have not actually run Amicable Numbers myself, so I cannot compare the rate of credit handouts though... I cannot say which is more efficient.
The nice thing about SETI is it can use your integrated graphics chips, which most other projects can't. A little extra power that otherwise goes unused. Regardless of what your GPU does, it's worth pointing your integrated chip to SETI.
In general, low users and low RAC is good - but low RAC could be due to the project handing out credit slowly, and high users could be largely inactive... You never know.
Okay, very helpful again :) I therefore have a closer look at the Team RAC instead of the number of users!
Both are important. :D
I just wanted to try out SETI now and faced a problem: If I run SETI, it uses 0.3CPUs compared to the 0.0899 Amicable Numbers needs. This means, that I can either let 3 CPU workloads + 1 SETI workload rund, or 4 CPU Workloads and SETI at 60%CPU usage, since the gpu is bottlenecked by the lack of CPU I guess.
Both solutions do not seem very satisfactory to me. Can I somehow use the other .7 of this CPU core or would I just have to let do not much?
Yes - just run your CPUs at 100% load. The GPU will take priority over the CPU work, and only be very slightly throttled at worst. I tested this and noted very limited throttling.
The only time when you need to keep a whole core or two free for your GPU is when your GPU is effectively doing all your mining (it is the star of your rig), such as an FP64 GPU on MilkyWay@Home would be.
Effectively, setting your CPUs to 100% will let your system run one GPU job at practically 100%, three CPU jobs at 100%, and one CPU job at 70% load. Check task manager and you can verify. =)
I am running Ubuntu, and watching the GPU usage, I see only 40-60% being used when I run SETI and 4 cores. Amicable Numbers used the GPU 100%. Could it be, that my CPU is just not fast enough with its 30% for the GPU?
I doubt it. What does the GPU usage on SETI look like with one CPU left idle for it?
Then it goes to ~90%
Looks like in your case you are throttled... =/
This is where you will need to do some experimenting to see what set-up works best for your hardware. Good luck!