I bought a new computer with a 980 in it and a quad core. The default install of Boinc + Seti ran the Cuda + 8 cpu tasks, 2 per processor, presumably some superscalar/hyperthreading stuff, nothing new there.

Anyway, Netflix was a little slow in the framerate, so I reduced max CPU use until I got to 75%, then it was fine. I assume Chrome/Netflix was smart enough to use the unused processor.

So fast forward a couple of months to two seeks ago or so, now Chrome is way slowed down. Even as I type I get ahead of the letters appearing.

Scrolling on long web pages, e.g. tumblr, is also slowed and stuttered, as are the .gifs. This site, others, everything.

I tried setting it as low as 1% and that's one CPU process and the GPU. I might as well have it set at 100%

I cannot tell if it is the GPU, GPU's 0.331 of a CPU, or the one CPU process that is the guilty culprit, but it is definitely one of them.

Chrome could be goofed up now, too, for some reason preferring to use an already-active CPU under some misguided attempt to save power by not activating an unused CPU under the assumption it goes into some low power mode.

Anyone know anything about what could be going on?

Also, what I want to do (temporarily until this gets sorted out) is to disable CPU use when computer is in use (by a human) but that disables GPU too! Disable GPU is a subset of this setting, when in fact I only want the pure CPU use disabled, but allow GPU + GPU's 0.331 of a CPU when in use.

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As you have a 980 which is an NVidia card, the recent release of VLAR GUPPI work units for NVidia CUDA is probably causing the stuttering.

You can fix this under Tools:Computing Preferences by unchecking "Use GPU while computer is in use" and setting an appropriate time below. If you want the GPU computing to occur while the machine is being used, if you have edited app_config.xml and changed the <count> parameter to allow multiple work units to run on the GPU at once, it is suggested to increase the number to reduce the number of work units at once.

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For now, you could try going into your Seti@Home preferences from your account page and uncheck 'Use CPU'...and then the update button.
Then restart Boinc.
This should stop the CPU from being used to process work, but it will still be allowed to support the GPU.

You could also try such things as chkdsk, defrag the HD, or running a cleanup program.

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

I'm running an i7 2600 with Win10 & 2 GTX 750Tis running 2 WUs at a time.
It's got 4 cores reserved for GPU work as i'm using the -poll option. The only screen that stutters is the BOINC manager screen on the Tasks tab, even when running 4 VLARs on the GPUs at once.

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Grant
Darwin NT

I will try some of these suggestions as a temporary measure.

Do they have some kind of canary in the mine detection, where if, say, average work units drop off, they will detect it and see what could be causing it?

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