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Number crunching :
GPU crunching question please
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Send message Joined: 6 Apr 08 Posts: 2018 Credit: 100,142,856 RAC: 0 |
Fantastic! Well done Brickhead!, that's done the trick for me :D I'm not sure what you're watching, but I'm watching two MW WUs steadily crunching on two machines, with each crunching a CPDN WU in addition. Fantastic! Cheers Brickhead, you're a star! :) |
Send message Joined: 18 Feb 09 Posts: 158 Credit: 110,699,054 RAC: 0 |
<snip> Ok, I took out my 4850 since Windows 7 seemed too stupid to recognize it properly, thus not letting it work right for MW@home. I made the changes to my app info based on what you suggested. It burned thru my MW WUs and has let WCG take over, but hopefully as you say, after a while it'll balance out and keep get some more MW units. :) |
Send message Joined: 26 Jul 08 Posts: 627 Credit: 94,940,203 RAC: 0 |
The biggest thing I am curious about at the moment, is: I have a 3870 and a 4850 in it at the moment, but with n1, only one WU is running... shouldn't there be two? You are right, the n parameter sets the number of WUs per GPU. But I think the reason you see only one WU running is that the app recognizes only your 3870 card. You can have a look to the task details (on the MW website) to verify that. I guess you have just put the 4850 in your computer. The problem is that the driver deactivates the graphics card, if no monitor is attached to the card (or no display active). The easiest solution would be to connect both cards to the same monitor (first card via DVI and the second via VGA). |
Send message Joined: 18 Feb 09 Posts: 158 Credit: 110,699,054 RAC: 0 |
Ahh, I wasn't aware it needed to be hooked up to anything. Sadly, the monitor they were hooked up to was an old CRT so no DVI. Good info for the future tho, perhaps if I replace the monitor someday or build a new box somewhere, til then I'll survive with just the one GPU crunching. :) Thanks for the insight. :) |
Send message Joined: 24 Feb 09 Posts: 620 Credit: 100,587,625 RAC: 0 |
Hi Guys Re the message snippet below - is he loading a GPU capable WU, or did that load into CPU ? I am assuming it went to CPU, as he only has a NVIDIA (therefore CUDA) card/GPU 08/03/2009 17:34:28|Milkyway@home|Restarting task ps_s21_11_927582_1236517394_0 using milkyway version 19 08/03/2009 17:34:28|Milkyway@home|Restarting task ps_s21_11_1012590_1236526602_0 using milkyway version 19 08/03/2009 17:34:31|Milkyway@home|Sending scheduler request: To fetch work. Requesting 1708130 seconds of work, reporting 0 completed tasks Regards Zy |
Send message Joined: 26 Jul 08 Posts: 627 Credit: 94,940,203 RAC: 0 |
Ahh, I wasn't aware it needed to be hooked up to anything. Sadly, the monitor they were hooked up to was an old CRT so no DVI. Good info for the future tho, perhaps if I replace the monitor someday or build a new box somewhere, til then I'll survive with just the one GPU crunching. :) Thanks for the insight. :) AMD promised better multi GPU support for future versions of the stream SDK (next version should be out within a week or two). What I'm doing now is actually a quick and dirty mod of the brook.dll. For the time being you could use a VGA dummy. This "solution" is even mentioned by AMD staff in their forums. |
Send message Joined: 26 Jul 08 Posts: 627 Credit: 94,940,203 RAC: 0 |
Hi Guys The GPU app crunches exactly the same WUs as the CPU application. In that sense all WUs are GPU capable. But one needs to install a special GPU application through the anonymous platform mechanism of BOINC to use the GPU for the calculations. In the moment these application is only available for Radeon HD3800 and HD4800 series cards. But the project is working on a CUDA implementation supporting the GTX line of nvdia. In the future it may become possible to distribute the GPU apps by the project automatically. But there is still a lot of developement to do. |
Send message Joined: 6 Apr 08 Posts: 2018 Credit: 100,142,856 RAC: 0 |
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Send message Joined: 18 Feb 09 Posts: 158 Credit: 110,699,054 RAC: 0 |
Nice work you are doing Cluster. :) Hopefully the boys that do the BOINC app itself can get some nice ATI support to make it easier to distrubute the different apps. |
Send message Joined: 24 Feb 09 Posts: 620 Credit: 100,587,625 RAC: 0 |
Thanks Cluster - fully understood. We have guy loading up over at SETI with a CUDA issue later in the message sequence, and wanted to check behaviour of MW V19 on load up as part of the jigsaw. Much appreciated. Regards Zy |
Send message Joined: 8 Nov 08 Posts: 178 Credit: 6,140,854 RAC: 0 |
Nice work you are doing Cluster. :) Hopefully the boys that do the BOINC app itself can get some nice ATI support to make it easier to distrubute the different apps. David Anderson, the main developer for BOINC, has said he'll integrate ATI support in, probably after 6.6, and once ATI sends him a card to work with. |
Send message Joined: 18 Feb 09 Posts: 158 Credit: 110,699,054 RAC: 0 |
That's good news! |
Send message Joined: 12 Apr 08 Posts: 621 Credit: 161,934,067 RAC: 0 |
Nice work you are doing Cluster. :) Hopefully the boys that do the BOINC app itself can get some nice ATI support to make it easier to distrubute the different apps. And 6.6.x seems to be slipping two weeks per week in release horizon. And anyone that has been promised an item of hardware from a mfgr should not be surprised if it does not take more than 6 months and worse, will be the wrong item when it is sent. |
Send message Joined: 29 Aug 07 Posts: 4 Credit: 100,590,500 RAC: 0 |
Hi, Is it possible to run CPU and GPU both MilkyWay applications at the same time? Thank you Eric |
Send message Joined: 18 Feb 09 Posts: 158 Credit: 110,699,054 RAC: 0 |
Hi, Sadly not on the same machine at this time. |
Send message Joined: 28 Sep 08 Posts: 4 Credit: 110,206,704 RAC: 0 |
For when is planned the application for nvidia ? |
Send message Joined: 27 Aug 07 Posts: 915 Credit: 1,503,319 RAC: 0 |
Hi, Unless this is your only project it's better to divert the CPU resources to your other projects considering how fast the ATI cards are pumping out the results. me@rescam.org |
Send message Joined: 4 Oct 08 Posts: 1734 Credit: 64,228,409 RAC: 0 |
Hi, I agree with Misfit on this point. Use your CPU(s) for another project and your GPU for MW. |
Send message Joined: 6 Apr 08 Posts: 2018 Credit: 100,142,856 RAC: 0 |
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Send message Joined: 27 Aug 07 Posts: 915 Credit: 1,503,319 RAC: 0 |
How about using your CPU for computer programs and your GPU to display graphics? Keep going you credit whore. :P me@rescam.org |
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