first question..PC running 2 290x's ,4WU's each and 0 cpu tasks...splits the use of my cpu cores between all 8 where as my pc with 2 280x's(4WU's each) and 0 CPU tasks is only using 1 core, core#0 ? and both cant seen to get over 70% utilization?

Links to these 2 hosts?
Did you use -instances_per_device N option?
Set N to 4

I´m using -no_cpu_lock on my host.

It works better on my FX but your milage might vary.

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With each crime and every kindness we birth our future.

did clean install of everything,started over,newest crimson drivers and will start with 3 WU's/GPU..running 2 280x's : this look ok??


MB8 cmd line:

-sbs 256 -no_cpu_lock -instances_per_device 3 -spike_fft_thresh 4096 -tune 1 64 1 4 -oclfft_tune_gr 256 -oclfft_tune_lr 16 -oclfft_tune_wg 256 -oclfft_tune_ls 512 -oclfft_tune_bn 64 -oclfft_tune_cw 64

app_info:

<avg_ncpus>0.5</avg_ncpus>
<max_ncpus>6</max_ncpus>
<plan_class>opencl_ati_sah</plan_class>
<coproc>
<type>ATI</type>
<count>0.33</count>
</coproc>

did clean install of everything,started over,newest crimson drivers and will start with 3 WU's/GPU..running 2 280x's : this look ok??


MB8 cmd line:

-sbs 256 -no_cpu_lock -instances_per_device 3 -spike_fft_thresh 4096 -tune 1 64 1 4 -oclfft_tune_gr 256 -oclfft_tune_lr 16 -oclfft_tune_wg 256 -oclfft_tune_ls 512 -oclfft_tune_bn 64 -oclfft_tune_cw 64

app_info:

<avg_ncpus>0.5</avg_ncpus>
<max_ncpus>6</max_ncpus>
<plan_class>opencl_ati_sah</plan_class>
<coproc>
<type>ATI</type>
<count>0.33</count>
</coproc>

Change the last 2 params to

-oclfft_tune_bn 16 -oclfft_tune_cw 16.

---

With each crime and every kindness we birth our future.

ok,iv clean installed everything,reajusted all setting for both PC's...started them on 3WU's each ,all of them...
utilization is at 99% on 280xs and 100% on 290x's each are multiple cores now..so hopefully no errors :)

lets give it a few hours and see what happens :) thanks for the help guys