Guide to running multiple GPU work units

t_ski · Dec 12, 2012

The 7770's can handle six WU's if you split the CPU righ (and you have a strong enough CPU).

HammerON · Dec 12, 2012

Well the GTX 580's did not seem to like 4 WU's each (thanks KieX for the app_info

). I kept getting a "Computation Error" on two of the 8. I reduced it to 3 WU's and it appears to be working just fine

Taking about 10-12 minutes to complete a WU....

Norton · Dec 12, 2012

HammerON said:
Well the GTX 580's did not seem to like 4 WU's each (thanks KieX for the app_info). I kept getting a "Computation Error" on two of the 8. I reduced it to 3 WU's and it appears to be working just fine
Taking about 10-12 minutes to complete a WU....

That's the time it takes them to complete on my 7870... but I'm doing 8 of them on the one card. The difference between the 7 series AMD cards and anything else is amazing!!!

mstenholm · Dec 12, 2012

I do 2x4 (7770s, one at 1000 MHz, one at 1090) and get 83-84K when all is working and 6 on my 7950 (at 990 MHz I think it was) and got the same 83-85K when I was using the PC 8 hours a day. Lets see if it pick up in my absence.

KieX · Dec 12, 2012

HammerON said:
Well the GTX 580's did not seem to like 4 WU's each (thanks KieX for the app_info). I kept getting a "Computation Error" on two of the 8. I reduced it to 3 WU's and it appears to be working just fine
Taking about 10-12 minutes to complete a WU....

Good stuff. Glad to see you get going again. I'll post your version on the OP. If it resolved your problem then might help others too. :toast:

mstenholm said:
I do 2x4 (7770s, one at 1000 MHz, one at 1090) and get 83-84K when all is working and 6 on my 7950 (at 990 MHz I think it was) and got the same 83-85K when I was using the PC 8 hours a day. Lets see if it pick up in my absence.

The speed of your CPU and GPU play a big difference in what return you get with more WU.

-My old 7770's @ 900MHz with 2.1GHz CPU = 3WU optimal for 33K
-Your 7770's @ 1000MHz+ with (3.xGHz? maybe) CPU = 4 WU optimal for 40K?

But tell you what, the 79xx series are a different animal:
-7950 @ 1025MHz with a full 3GHz CPU thread = 11 WU give 95-100K
-7970 @ 1100MHz with 0.44% of a 4GHz CPU thread = 9 WU give 100K-115K (not run a full day yet, these are preliminary)

F150_Raptor · Dec 13, 2012

HammerON said:
Well the GTX 580's did not seem to like 4 WU's each (thanks KieX for the app_info). I kept getting a "Computation Error" on two of the 8. I reduced it to 3 WU's and it appears to be working just fine
Taking about 10-12 minutes to complete a WU....

What was the time that your 580's would get when you were only running 1 wu per card? You could be doing less work with 3 wu's per card.

The reason I ask is when I ran them on my 580's with only 1 wu per card, the time was 2 minutes 40 seconds per wu. When I ran 2 wu's per card it went up to 4 minutes and 30 seconds, which is an average of 2 minutes 15 seconds per wu.

I never tried 3 wu's, but your average per wu is 3 minutes 20 seconds to 4 minutes. That average just seems kind of high per wu, that's why I asked what they'd run with only 1 wu per card. You might get more points only running 2 wu's.

HammerON · Dec 13, 2012

F150_Raptor said:
What was the time that your 580's would get when you were only running 1 wu per card? You could be doing less work with 3 wu's per card.

The reason I ask is when I ran them on my 580's with only 1 wu per card, the time was 2 minutes 40 seconds per wu. When I ran 2 wu's per card it went up to 4 minutes and 30 seconds, which is an average of 2 minutes 15 seconds per wu.

I never tried 3 wu's, but your average per wu is 3 minutes 20 seconds to 4 minutes. That average just seems kind of high per wu, that's why I asked what they'd run with only 1 wu per card. You might get more points only running 2 wu's.

I think it was about 3 to 4 minutes per WU...
I am not going to worry about it now as they are getting replaced hopefully tomorrow by 2 7970's

mstenholm · Dec 13, 2012

KieX said:
The speed of your CPU and GPU play a big difference in what return you get with more WU.

-My old 7770's @ 900MHz with 2.1GHz CPU = 3WU optimal for 33K
-Your 7770's @ 1000MHz+ with (3.xGHz? maybe) CPU = 4 WU optimal for 40K?

But tell you what, the 79xx series are a different animal:
-7950 @ 1025MHz with a full 3GHz CPU thread = 11 WU give 95-100K
-7970 @ 1100MHz with 0.44% of a 4GHz CPU thread = 9 WU give 100K-115K (not run a full day yet, these are preliminary)

I can see that I'm not running my 7950 to its full potential. I ran 6 becasue of CPU temperature but it is now -15 C outside so I asume that my office is a bit colder too. I will try with 8 (one CPU to one GPU) when I get home. I don't think my wife want to poke around in the app_info

HammerON said:
I think it was about 3 to 4 minutes per WU...
I am not going to worry about it now as they are getting replaced hopefully tomorrow by 2 7970's

Wow, knocked down a place in the pie. :toast:

t_ski · Dec 13, 2012

HammerON said:
I think it was about 3 to 4 minutes per WU...
I am not going to worry about it now as they are getting replaced hopefully tomorrow by 2 7970's

Just as I was making a run for the #10 spot :shadedshu

[Ion] · Dec 13, 2012

HammerON said:
I think it was about 3 to 4 minutes per WU...
I am not going to worry about it now as they are getting replaced hopefully tomorrow by 2 7970's

That's a hell of an upgrade--particularly from the WCG standpoint. Between those and the HD7770 system, I think you can count on 300k PPD :eek:

t_ski · Dec 13, 2012

manofthem is running dual 7970's, so you'd get close to his PPD on this system only. If you're putting these on the 970 you can do 6 WU's each and still give an entire thread to each WU.

RejZoR · Dec 13, 2012

Any idea how i'd run multiple GPU tasks at once for Help Conquer Cancer (HCC) project and leave CPU for FightAIDS and Human Proteome? I'd like to run these tasks simultaneously because GPU churns out massive number of completed WU's (today when iw as testing it it did like 10 WU's in 5 minutes or so). But only for HCC as other two only run on CPU.

I'd like to run all this under a single device and single WCG account. I'll try to use only GPU in my AMD E-450 based laptop and run only HCC there.

KieX · Dec 13, 2012

RejZoR said:
Any idea how i'd run multiple GPU tasks at once for Help Conquer Cancer (HCC) project and leave CPU for FightAIDS and Human Proteome? I'd like to run these tasks simultaneously because GPU churns out massive number of completed WU's (today when iw as testing it it did like 10 WU's in 5 minutes or so). But only for HCC as other two only run on CPU.

I'd like to run all this under a single device and single WCG account. I'll try to use only GPU in my AMD E-450 based laptop and run only HCC there.

I replied to the first part in your other thread, hopefully that gets you going the way you wanted. :toast:

manofthem · Dec 13, 2012

t_ski said:
manofthem is running dual 7970's, so you'd get close to his PPD on this system only. If you're putting these on the 970 you can do 6 WU's each and still give an entire thread to each WU.

This is truth. 2 7970s running averaging ~200k/day

I wish I had more cores/threads

KieX · Dec 20, 2012

Goodbye app_info. Hello app_config.

Right. So seems I'm really late to the ball with this one, but the days for the current app_info.xml method are numbered. WCG and BOINC have been working together on the issues with this multi-gpu method and we'll need to switch to a different method once the new software is stable (currenlty in BETA).

This is because a bug was fixed in the BOINC client. World Community Grid has never supported the anonymous platform mechanism. However, because of two bugs, one in the client and one in the server, volunteers were able to fetch work using the anonymous platform at WCG.

The bug that is fixed in the BOINC client is that before 7.0.40, if you were using the app_info.xml file & your client supported an 'alt-platform', then the client would send 'anonymous' as the primary platform but also report an 'alt-platform' (which it should not have been sent).

The issue on the server side is as follows. When the server receives a request, it adds the primary platform and any alt-platforms that the project supports to an 'allowed platform' list. If the first platform on the allowed platform list is the anonymous platform, then the server code handles the request using the anonymous platform code path. If the list size is 0 then a message is reported back to the client that the platforms reported are not supported.

The server bug is that if the primary platform is the anonymous platform, then any alt-platforms should not be considered. Instead, the server code added the alt-platforms to the list anyway.

This is an issue for us because since we do not support the anonymous platform, that is discarded during processing and not added to the allowed platform list. However, the alt-platforms are added to the list. Since the list size is > 0, processing continues down the normal server side logic. It is this that caused the generation of the 'ignored app version' message. It also meant that if I user only specified hcc1 in their app_info.xml file, but they had opted into receiving work for more than hcc1, then they would be assigned work from those other projects and the client would immediately discard that work (and not report that fact to the server).

After discussing with BOINC, the decision was that volunteers should be able to have fine grain control over how many instances of a job are run on their GPU and that the anonymous platform mechanism is not the way that should be done. The decision was made to create the app_config.xml file so that volunteers could have control over this by making changes to the file which has been added in the 7.0.40 client. Volunteers at World Community Grid should be looking as this is stabilized as the way to run multiple copies of HCC1 GPU on your graphics card at one time.

Once the changes for the app_config.xml file are in a stable BOINC client release, we will disable the anonymous platform on the server side. We will provide warning in this forum before we do that and we will allow time for volunteers to upgrade to the stable client build before we disable the feature.

Source: https://secure.worldcommunitygrid.org/forums/wcg/viewpostinthread?post=404466

Seems like a few people have tested the new method successfully so I'll read up and do some testing of my own. Will start preparing a guide for that method. Looks simpler, so it may even be possible to code a small program to let users automatically generate and create the file according to their preferences without all the current hassle.

We will be given notice of the change when it becomes official with a small grace period to make changes, so hopefully we can have our team transition smoothly and keep rocking that #4 spot

Norton · Dec 20, 2012

I loaded the 7.0.42(x64) Boinc Manager in the Xeon rig for this reason (think that one will do the new system).

This link is in the options:

http://boinc.berkeley.edu/wiki/Client_configuration

Decent info but I don't have enough experience to be able to do anything with it yet? :eek:

agent00skid · Dec 20, 2012

FOR 7.0.40 and later:

Place this in app_config.xml in the worldcommunitygrid folder, to make each hcc1 WU use ,25 gpu and 1 cpu each.

Code:

<app_config>
   <app>
      <name>hcc1</name>
      <max_concurrent>4</max_concurrent>
      <gpu_versions>
          <gpu_usage>.25</gpu_usage>
          <cpu_usage>1</cpu_usage>
      </gpu_versions>
   </app>
</app_config>

Concurrency is not really needed in this instance, but can be used to limit the number of WU from one project running at the same time.

Example:

Code:

<app_config>
   <app>
      <name>cep2</name>
      <max_concurrent>1</max_concurrent>
   </app>
</app_config>

For multiple things, multiple <app></app>'s are just placed inside the <app_config></app_config>

Code:

<app_config>
   <app>
      <name>hcc1</name>
      <max_concurrent>4</max_concurrent>
      <gpu_versions>
          <gpu_usage>.25</gpu_usage>
          <cpu_usage>1</cpu_usage>
      </gpu_versions>
   </app>
   <app>
      <name>cep2</name>
      <max_concurrent>1</max_concurrent>
   </app>
</app_config>

Mindweaver · Dec 21, 2012

Hey guys I've got my 1055T w/ HD7770 Up and running. What would be the best config to run? I only see on the OP has ATI CPU/GPU = intel/ati. I need to run AMD/ATI. Thanks!

t_ski · Dec 21, 2012

The 1055T us six cores, right? Probably the best config would be running six WU's on the card and no GPU, unless you want to run more projects that just HCC. However, Norton is the expert when it comes to AMD CPU's.

m&m's · Dec 21, 2012

Set .33 or .25 for your GPU and use the other cores to crunch HCC or GFAM.

[Ion] · Dec 21, 2012

I would encourage four WUs. I'm running that many on my HD7770s, and the benefit over three is already very small. Six seems to me like an awful lot for such a small card.

johnspack · Dec 21, 2012

Hmmm, there's a 64 bit version? Darn, dling it now.

Norton · Dec 21, 2012

Mindweaver said:
Hey guys I've got my 1055T w/ HD7770 Up and running. What would be the best config to run? I only see on the OP has ATI CPU/GPU = intel/ati. I need to run AMD/ATI. Thanks!

Try this one:
*4 HCC gpu wu's (1.0 CPU + 0.25 GPU) and 2 HCC cpu wu's

Code:

<app_info> 
	<app> 
		<name>hcc1</name> 
		<user_friendly_name>Help Conquer Cancer</user_friendly_name> 
	</app> 
	<file_info> 
		<name>wcg_hcc1_img_7.05_windows_intelx86__ati_hcc1</name> 
		<executable/> 
	</file_info> 
	<file_info> 
		<name>hcckernel.cl.7.05</name> 
		<executable/> 
	</file_info> 
	<file_info>
		<name>wcg_hcc1_img_7.05_windows_intelx86</name>
		<executable/>
   </file_info>
	<app_version> 
		<app_name>hcc1</app_name> 
		<version_num>705</version_num> 
		<platform>windows_intelx86</platform> 
		<plan_class>ati_hcc1</plan_class> 
		<avg_ncpus>1.0</avg_ncpus> 
		<max_ncpus>4.0</max_ncpus> 
			<coproc> 
				<type>ATI</type> 
				<count>.25</count> 
			</coproc> 
		<file_ref> 
			<file_name>wcg_hcc1_img_7.05_windows_intelx86__ati_hcc1</file_name> 
			<main_program/> 
		</file_ref> 
		<file_ref> 
			<file_name>hcckernel.cl.7.05</file_name> 
			<open_name>hcckernel.cl</open_name> 
		</file_ref> 
	</app_version>
	<app_version>
		<app_name>hcc1</app_name>
		<version_num>705</version_num>
		<platform>windows_intelx86</platform>
		<avg_ncpus>1.000000</avg_ncpus>
		<max_ncpus>1.000000</max_ncpus>
		<api_version>6.13.0</api_version>
		<file_ref>
			<file_name>wcg_hcc1_img_7.05_windows_intelx86</file_name>
			<main_program/>
		</file_ref>
	</app_version>
</app_info>

I've run into some minor scheduling glitches but it gives me 60-65k ppd on the FX 8350/7870 rig (6 gpu, 2 cpu)

johnspack · Dec 21, 2012

HammerON said:
Well the GTX 580's did not seem to like 4 WU's each (thanks KieX for the app_info). I kept getting a "Computation Error" on two of the 8. I reduced it to 3 WU's and it appears to be working just fine
Taking about 10-12 minutes to complete a WU....

Yeah, I stick to 2 wus on my 480, about 6mins apiece.

Norton · Dec 22, 2012

agent00skid said:
FOR 7.0.40 and later:

Place this in app_config.xml in the worldcommunitygrid folder, to make each hcc1 WU use ,25 gpu and 1 cpu each.

Code:

<app_config> <app> <name>hcc1</name> <max_concurrent>8</max_concurrent> <gpu_versions> <gpu_usage>.25</gpu_usage> <cpu_usage>1</cpu_usage> </gpu_versions> </app> </app_config>

I switched my FX-8150/2x 7770 rig over to BOINC Manager 7.0.42(x64) and added the app_config to it. It started right up with 8 wu's (4 on each card) :toast:

I used the file above that agent00skid posted (All I changed was the concurrent # of wu's running from 4 to 8).

Thanks to KieX for the heads up and agent00skid for posting a draft app_config to try out! :rockout:

System Name	My i7 Beast
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Benchmark Scores	Always changing~

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Video Card(s)	MSI Gaming RX 6800- Asus RTX 3070 TUF OC- MSI Ventus GTX 1660Ti and etc...
Storage	Main PC (1TB WD SN850- 2TB PNY CS 3040- 2TB Seagate Firecuda) and etc...
Display(s)	Main PC (2x24" Dell UltraSharp U2414H)
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Mouse	G300s
Keyboard	Corsair K65
VR HMD	N/A
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System Name	The work PC /2700x/5950x
Processor	3900X stock/ 2700x stock/ 5950x 4200 MHz fixed @ 1,056-1,08V
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Power Supply	AX 850 Titanium/AX 860i/AX 760
Software	Dual boot/Win 10 / Linux / Win 10+Linux

System Name	Slick
Processor	Intel i5 2467M
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Memory	8GB Corsair Value
Storage	Crucial M4 7mm 256GB
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Processor	i3 3240 / i7-3520M / 4x Opteron 6376 @ 2.86GHz
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Memory	1x8GB / 2x4GB / 4x4GB
Video Card(s)	GTX260 / Intel HD 4000 / nVidia GT310
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Power Supply	Enermax 500W / HP 130W / Supermicro Gold 1400W
Keyboard	IBM Model M
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Processor	3900X @ 4.0
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Case	Thermaltake P3
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Mouse	Logitech G900
Keyboard	G Skill KM570 MX Silver
Software	Windows 10 Pro

System Name	Waterfall \| xe
Processor	Core i3-12100F \| i5-1240P
Motherboard	Gigabyte B660M-DS3H \| HP laptop
Cooling	Custom Watercooling \| Stock laptop
Memory	2*16GB \| 16GB DDR4
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Software	Windows 11 Pro x64 / Windows 11 Pro x64
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Processor	AMD Ryzen 5 3600X
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Guide to running multiple GPU work units

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