I have a GeForce 9800gtx+ and connected to ps3grid.net as directed to by my account manager boincstats. The first work unit processed correctely and I received credit for the 9 hours it ran. Subsequent work units generated the error message that I was NOT a cell processor and needed to detach from ps3grid and attach to gpugrid. I received no credit for any of the 3 work units I then detached and attached as instructed to www.gpugrid.net and immediately received a boatload of computation errors until I hit the magic quota # and was refused more work units. I also get the error that the work units are not designed for my system.

Something is wrong. The first unit got me about 3000 credits and therafter nothing but computation errors.

See my other thread on boincstats url.

This problem must have just happened today (31 oct) because I see something similar on boincstats forum.

pair Dual Opteron (amd-64)
vista 64 with x86 version 19 boinc
GeForce 9800gtx+

Think I solved one of the problems. As requested, about after the 2nd failed WU, I detached from the bam! account manager and manually re-attached to gpugrid. However, even though I selected GPUGRID from the drop down list, the edit box showed the old ps3grid.net url. I failed to change ps3 to gpu. I have since changed to gpu but having exceeded the 8 error limit quota, it appears I will have to wait another 24 hours to see if this fixes the problem.

I still do not know why the very first work unit ran correctly but none thereafter.

Fixed - as suggested in another post, I upgraded to 6.3.21 and rebooted. Had to wait 24 hours before I was allowed another work unit. I got 4 work units, selected No Additional Units, put 2 of the 3 waiting on suspension. After the first work unit successfully processed the 2nd one start OK and I then released all the remaining as it appears the system is back working.

other notes

I have a 700 watt thermaltake and a pair of 275 opteron. About 1.5 hours into the new workunit the system froze and would not restart for about 30 minutes. Thought I had enough fans, but I guess not. One CPU is 10c - 12c hotter than the other (68c to 56c). Think I need heatpipes on these dual core plus the case is cramped. I was not successful installing the NVidia tool kit (temp monitor) and was luck to be able to boot into safe mode and find a vista restore point. Not sure what happened as I see other people with Vista-64 running that nvidia toolkit.

Anyway, am working on my 3rd work unit and all seems well.