Before I start, I have read the FAQs and other similar posts but I have not found an answer..

I installed a second CUDA card in my PC. BOINC 6.10.18 is picking up the card according to the startup messages, but only the original card is doing any work. After I installed the card, I extended the desktop to the second card and restarted BOINC. BOINC immediately downloaded a number of new GPU tasks - presumably for the new card/processing capacity. The second card has a dummy plug attached to it. The <use_all_gpus> flag is set and the cc_config file is in the correct directory. Do I need to change anything in the app_info file or do I have another problem? Thanks in advance.

Before I start, I have read the FAQs and other similar posts but I have not found an answer..

I installed a second CUDA card in my PC. BOINC 6.10.18 is picking up the card according to the startup messages, but only the original card is doing any work. After I installed the card, I extended the desktop to the second card and restarted BOINC. BOINC immediately downloaded a number of new GPU tasks - presumably for the new card/processing capacity. The second card has a dummy plug attached to it. The <use_all_gpus> flag is set and the cc_config file is in the correct directory. Do I need to change anything in the app_info file or do I have another problem? Thanks in advance.

Sorry I can't help more help but I put this in and restarted about three times and it finally worked. I was told NOT to make changes to the app_info, made sure the settings in preferances are set.
<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

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Official Abuser of Boinc Buttons...
And no good credit hound!

I think you had done nearly everything..

[CUDA with Nvidia System Tools]

Which driver version you use?
URL to this host?


Maybe.., I had probs to let run nVIDIA_driver_195.x , I needed to enable PhysX to let run CUDA.

If I let run 190.x or 191.x I didn't needed to enable PhysX.

It was my system with OCed GTX260-216 on 1st PCIe (1.0 x16) and 6200 LE on 3rd PCIe (1.0 x4). Only to 6200 LE display connected.

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The first time I got it working with 2 cards someone told me I needed a dummy plug. I hooked an extra monitor up and it worked and then I was able to restart without the second monitor. Just trying to think about all my problems and the advice and things I tried.

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Official Abuser of Boinc Buttons...
And no good credit hound!

[...]
The <use_all_gpus> flag is set and the cc_config file is in the correct directory. Do I need to change anything in the app_info file or do I have another problem? Thanks in advance.

Which GPUs are this?
Maybe the new Fermi with 'old' GPU together?

You see in the first few messages something like: 'client is set to use all GPUs' ?


Yes, like hiamps said, don't change the app_info.xml .

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I will try attaching a monitor to the card to see what happens. My son is using the PC at the moment (it is his actually) and it is difficult to get to it :-).

My startup info:

2009/12/12 07:09:16 PM Config: report completed tasks immediately
2009/12/12 07:09:16 PM Config: use all coprocessors
2009/12/12 07:09:16 PM log flags: file_xfer, sched_ops, task
2009/12/12 07:09:16 PM Libraries: libcurl/7.19.4 OpenSSL/0.9.8l zlib/1.2.3
2009/12/12 07:09:16 PM Data directory: C:\Documents and Settings\All Users\Application Data\BOINC
2009/12/12 07:09:16 PM Running under account Dom
2009/12/12 07:09:16 PM Processor: 2 GenuineIntel Intel(R) Core(TM)2 Duo CPU E8200 @ 2.66GHz [x86 Family 6 Model 23 Stepping 6]
2009/12/12 07:09:16 PM Processor: 6.00 MB cache
2009/12/12 07:09:16 PM Processor features: fpu tsc pae nx sse sse2 mmx
2009/12/12 07:09:16 PM OS: Microsoft Windows XP: Home x86 Edition, Service Pack 3, (05.01.2600.00)
2009/12/12 07:09:16 PM Memory: 2.00 GB physical, 3.85 GB virtual
2009/12/12 07:09:16 PM Disk: 232.88 GB total, 130.21 GB free
2009/12/12 07:09:16 PM Local time is UTC +2 hours
2009/12/12 07:09:16 PM NVIDIA GPU 0: GeForce 8800 GS (driver version 19107, CUDA version 2030, compute capability 1.1, 384MB, 326 GFLOPS peak)
2009/12/12 07:09:16 PM NVIDIA GPU 1: GeForce GT 240 (driver version 19107, CUDA version 2030, compute capability 1.2, 512MB, 257 GFLOPS peak)
2009/12/12 07:09:16 PM SETI@home Found app_info.xml; using anonymous platform

I will try attaching a monitor to the card to see what happens. My son is using the PC at the moment (it is his actually) and it is difficult to get to it :-).

Too funny, I know the feeling.

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Official Abuser of Boinc Buttons...
And no good credit hound!

Solved thank you. Re-installed optimized apps and it started working. I must have messed around with the configs when I first installed S@H on that machine a few months back.