Hey Ya'll,
I just set up a second computer. Boinc 7.0.52
I am running two Radeon HD 7770's (not sli'd)
on an intel i5-2400 Windows 7 64-bit

Can you help me set up another app_config?

in cc_config you can set (on the top of lot of other things) to crunch on all GPUs.

Check if you already have cc_config.xml in c:/ProgramData/BOINC

If yes, check if it contains line SekeRob mentioned here.

If you do not have cc_config.xml file, create one and the only lines you need are:

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

Now you can try 12 concurrent tasks on 2 GPU's + 4 CPU threads (6 per GPU):

<app_config>
<app>
<name>hcc1</name>
<gpu_versions>
<gpu_usage>.166666</gpu_usage>
<cpu_usage>.333333</cpu_usage>
</gpu_versions>
</app>
</app_config>

or 8 concurrent tasks on your 2 GPU's + 4 CPU threads (4 per GPU):

<app_config>
<app>
<name>hcc1</name>
<gpu_versions>
<gpu_usage>.25</gpu_usage>
<cpu_usage>.5</cpu_usage>
</gpu_versions>
</app>
</app_config>

or even 16 concurrent tasks on your 2 GPU's + 4 CPU threads (8 per GPU):

<app_config>
<app>
<name>hcc1</name>
<gpu_versions>
<gpu_usage>.125</gpu_usage>
<cpu_usage>.25</cpu_usage>
</gpu_versions>
</app>
</app_config>

(Don't forget to restart BOINC)

Cheers

Edit to add: shrubbing = crunching (in the language spoken by The Knights Who Say NI!)

Hi.

I have a question about the post 5th from the beginning.
Is there a typo there?
The last two lines look garbled - syntactically.
I broke out the last line and 'prettied' it up.
The '/' of 'max_concurrent' looks wrong - and I can't figure out the intent anyway.

/max_concurrent>
    <gpu_versions>
        <gpu_usage>
           .083333
         </gpu_usage>
       <cpu_usage>
         .25
       </cpu_usage>
     </gpu_versions>
  </app>
</app_config>

Is the "/max_concurrent>" correct? Its not balanced anywhere.
The final </app_config> is balanced to the <app_config> at the very first.

To me if looks like:
<app_config>
-- several phrases of <app><name>[some name]</name>[stuff]</app>
</app_config>

Then, the garbled line.

I was just trying to make sense of it - and couldn't.
(Par for my course.)
Jay

That last line *after* the closing </app_config> in that overlong, much redundant content having app_config.xml, looks like it just wandered in out of place. Ignore. You don't need <max_concurrent> unless you want to expressly limit the *total* number of CPU+GPU processes for hcc1. His .083333 for the GPU means there's 12 allowed to run on the GPU, the <max_concurrent> of 17 he uses on most sections, means that after subtraction of of whatever runs on the GPU, the rest of a science can run on the CPU. In case that were 10 running actually on GPU, that would mean on overflow of 7 allowed on CPU, but since [3] cores are already reserved for the GPU, that 17 would only be achieved in the situation where 12 are running on the GPU, the maximum as determined by the .08333 fraction, which by the cpu factor of .25 means that 3 full cores are reserved for the GPU, leaving 5 CPU only jobs i.e. it must be an octo.

[moi] Did update the official wiki to give the answer to "(not sure if per GPU in multiGPU rigs, or per total GPU's)" which is when a max_concurrent of 17 would have led with 2 cards to one or the other card being underutilized, and not knowing at all [not a matter of sure or unsure], if that would be a random fill out or in the order of device 0, device 1 etc ... not in the least important to know since the put-off for most addicted crunchers is "underutilized" ;)

edit: The wiki link [Berkeley is up again after 2 days down] http://boinc.berkeley.edu/wiki/Cc_config.xml