Balance CPU and GPUs

And disable the use of a CPU core or two.
GPUs do require a little support from the CPU in their daily tasks.

You also may want to experiment with disabling HT, and letting the CPUs run at full speed instead of half.

In my early experiments with such settings, there was NO gain with running HT on.

Others claimed small improvements in total processing, so YMMV applies.

I personally always found it better to let the CPU cores run at full speed, which processes the GPU startup routines faster.
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"Ask not, what your kitty can do for you. Ask what you can do for your kitty."

As it is kitten, so shall it be done.

You definetly need to free more CPU cores running 4 GPUs with multiple instances.

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You definetly need to free more CPU cores running 4 GPUs with multiple instances.

You definetly need to free more CPU cores running 4 GPUs with multiple instances.

Very true, also needed with AMD/ATI GPUs, doesn't matter if Cross-Fire
is enabled.
Every GPU has 1 thread of an i7-2600, also running on higher frequncy
by increasing the Base-Clock from 100 to 102 to 104MHz. Since the multiplier is locked, it's the only option and works OK.

But I do have several driver-crashes, specially with SETI work?!

NVidia GPUs also need sometimes a dedicated core, CPU time is higher on NVidia
GPUs.
Almost double compaired to AMD/ATI GPUs.

I've set SETI the same way, 0.5CPU in stead of 0.04 so it uses 1 core/thread
setting this in app_info.xml when doing 2 pper GPU 1 core/thread will
be used, Einstein uses this setting too.

This AMD/ATI host does Docking or Einsteins Gravity Wave search on CPU.
SETI and Einstein only GPU.