On windows XP, I added a 2nd inexpensive PCI graphics card (yes PCI, not PCI express). It's a NVIDIA GeForce 8400 and it is on the list of CUDA enabled devices. Based on the BOINC Manager messages, I'm not sure that this system is seeing or using the second card. For example, on my Vista home system it explicitly lists the 2nd card AND I see 5 instead of 4 process running. I'm not seeing either on XP.

Both the primary graphics card (Nvidia 8500) and this card use the same driver. I have re-installed the driver and rebooted the system (both tasks) several times.

Any suggestions how to tell if both GPU's are being actively utilized on this system?

Thanks!

Gary

see the answer at http://setiathome.berkeley.edu/ Find the forums, the Questions and Answers, then CUDA, then message number 879797

Or just look at http://setiathome.berkeley.edu/forum_thread.php?id=52776&nowrap=true#879807. :-)

I'll leave this thread be, it may prove useful for others with the same problem.

---