KWSN Orbiting Fortress

branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

Solo Collatz Pending? I would like to get the stuff they are smoking #ni-1

OK, solo collatz validator is down Embarassed

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Plomos · Prince Joined: 26 Apr 2011 Posts: 859

Headed towards my gold badge in this. Already have quite a few pending, so points should start jumping pretty good. BADGES
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lvanst · Posted: Mon Dec 02, 2013 12:43 am Post subject:

Knights,

Can someone post a sample Collatz app_config.xml ?

I can only get a basic config running, no sub apps for ATI(opencl) and Nvidia(Cuda) as they both have the exact same app name Sad

So I'm stuck with this:
<app_config>
<app>
<name>solo_collatz</name>
<gpu_versions>
<gpu_usage>1</gpu_usage>
<cpu_usage>.60</cpu_usage>
</gpu_versions>
</app>
</app_config>

...and that's only valid for the ATI WUs #Mad

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branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

What do you want app_config to do for you?

#ni-2

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branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

PhastPhred · Posted: Mon Dec 02, 2013 4:10 pm Post subject:

lvanst · Posted: Mon Dec 02, 2013 11:13 pm Post subject:

branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

AFAIK, in app_config you can specify the number of concurrent tasks per application. That´s why I asked what do you want from it. Would you like to run more concurrent GPU WU ´s than default one per GPGPU?

Cheers Smile

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Yankton · Posted: Tue Dec 03, 2013 1:21 am Post subject:

Couple of notes, which you may already know. Setting the CPU usage in an app_info file won't limit or change how much of a cpu the gpu task uses. If you run multiple tasks and you set this to a fraction of a cpu core it uses that to stop shrubbing on cores. For example, if you run 4 simultaneous tasks using .6 cpus (for the ati app you mentioned - are you sure it isn't .06?). That would be 2.4 CPU cores needed so it will set 2 cores aside for the the 4 gpu tasks (In theory). Now if you wind up using only say .5 cpu cores for the 4 tasks combined then you have needlessly disabled part of your cpu shrubbing. I have a low end and a high end card and I have found the cpu usage listed by the app to be useless on both. I have found it better to simply tell boinc in the manager to use 75% of the CPU cores (for a quad) or 87.5% (for a hyperthreaded quad), which leaves 1 core for gpu tasks and me aimlessly wandering the internets (Set as needed if your gpus need more cores). Unless the gpu apps need some serious cpu usage leave the cpu_usage setting out and only use the gpu_usage (.5 for 2 tasks, .33 for 3 tasks and so on). Use gpu-z to figure out how much of your gpu is used for 1 task, then try it with 2. You won't get it above 99% so just get it close and make sure your card has good cooling. If you use the optimized seti apps they should tell you how to get the app with the same name to work on both cards using the coproc tag and setups for each. I'll try and look an example but I'm at work so I can't see my own stuff atm. With 2 gpus on one system you should be able to get 2 shrubs next to each other with different heights for a two-level effect.

#ni-1

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Some days are worse than others.

LanDroid · Posted: Tue Dec 03, 2013 8:54 am Post subject:

I don't use .xml config files at all. Am I wasting many processor cycles? Hope not, 'twould earn me a stint in the comfy chair!

Not sure when I can get started on Collatz - still finishing up one of those large genefer PG WU's. It's in the mode where the more time spent on it increases the estimated time to completion. Confused

Early on I had 23+ hours in, 183+ to go. Now 250 hours in and 61 to go? And the deadline is tomorrow. Mad

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lvanst · Posted: Tue Dec 03, 2013 7:57 pm Post subject:

Sorry, I must be doing a poor job of explaining...

solo_collatz is a single wrapper/app with several underlying applications.

Those applications have different CPU requirements for execution.

For GPU apps (ATI/OpenCL or Nvidia/Cuda), the majority of the work is done by the GPU, with only a small portion of the work being done by a CPU.

If you don't create an app_config.xml file, BOINC assumes (incorrectly) that you need an entire CPU fully dedicated to each instance of the GPU application.

This is inefficient, as it leaves CPU unused...

On my node the Collatz ATI App uses .6 CPU, and the Collatz Cuda App uses .05 CPU

So, I actually need less than 1 CPU to drive both of my GPUs at 100% capacity. This leaves me an additional CPU for our current Skynet/POGS POTM.

However, the point is moot if I cannot get BOINC to understand that solo_collatz has two underlying apps with very different CPU requirements.

So, I'm looking for the app_config grand master that can tell us how to extend the current XML construct to properly allocate available CPU to those two Collatz apps (ATI/OpenCL or Nvidia/Cuda)...

Some people call it OCD, I call it the quest for optimal execution...

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Yankton · Posted: Tue Dec 03, 2013 8:54 pm Post subject:

Landroid, most of the gpu apps use between 70 and 95% of the gpu. Some people have them run 2 or 3 or more (depending on memory, requirements of the app, blah...) to push that up to 99% It pushes your card a bit harder but if you're good with that...

Ivanst,

Are you sure it's blocking a core on you? I haven't had that happen yet. If it's not you could use the locations on the collatz page (set home to run just the one app on one card and set work to run a different app on both cards or however you want it set up.

Also check this thread.

http://boinc.thesonntags.com/collatz/forum_thread.php?id=1058#17504
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Some days are worse than others.

lvanst · Posted: Tue Dec 03, 2013 10:18 pm Post subject:

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Yankton · Posted: Tue Dec 03, 2013 10:37 pm Post subject:

This is for running cuda and ati on distrgen. Couldn't find an example from collatz. I don't have an ati card so it's hard for me to experiment with it. This might have what you need though.

lvanst · Posted: Tue Dec 03, 2013 10:49 pm Post subject:

Yes! That's where I'm headed...

I can't live with this inaccuracy! I've grown to expect more from me Rolling Eyes

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LanDroid · Posted: Wed Dec 04, 2013 10:04 am Post subject:

KWSN passed Team USA. We crunched nearly 11 million yesterday and already 12 million today. Shocked

'Stones:
DoW 90,000,000
jAs 25,000,000
lvanst 8,000,000
Yankton 3,500,000
Sir Mifun Fat in a Right Place 3,500,000
Plomos 1,600,000
JumpinJohnny 400,000
Medijate 350,000
PhastPhred 350,000
CGKIII 200,000

branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

branjo · Prince Joined: 05 Jan 2006 Posts: 746 Location: Slovakia

Yankton · Posted: Wed Dec 04, 2013 5:21 pm Post subject:

I run a mixture of app_infos and app_configs. You tend to need the app_infos if you don't run the default apps (app_config doesn't always seem to work and there is a lack of info on this - maybe something set by a project). This is the app_config I use for collatz (runs 2 collatz tasks at a time):