cray rt titan card constant crashing

[res3d]

my setup is 4 Titan cards. I am turning off one of the cards from the CUDA process in the vray utility called OCLdeviceselect and it was running great but then started to crash again. I thought it was because I was using too much of the resources, but taking out one of the cards from the vray process should have done the trick. could it be that the scene is to complex? its very frustrating, sometimes I get the blue screen, sometimes max fails and sometimes the screen flickers and then comes back

anybody out there that can help??

[Morbid Angel]

too many factors which can cause such behavior. I know you need to update your bios to latest ver to properly support titan. If you did that, perhaps another driver version?

[3LP]

Well, if you have blue screens and screen flickering, it wouldn't be a Vray issue...
Make sure you have enough power supply, those titans are draining and certainly 4 of those...

If you give more explanations, we could maybe guide you better.

Stan

[res3d]

it works so prob, =very stable when I am on smaller scenes. I could find a bios update for the MB that I am using that would also work on 64, plus I am scared to update: its a rental computer. the computer has two power supplies so I hooked each one up to a different UPS. So far it is working good

[Morbid Angel]

Whats the power supply requirement? You could just be running out of juice, if you look up how much one titan needs in power and check that against what you actually have power wise in your breaker you could determine weather you need to split the power onto separate ones. Regarding the stability, as the larger scene is process perhaps more resources are required thats when the problem occurs, I remember reading titan manual and it explicitly says you must update bios before installing titan, so who knows weather they did it or not?.

[eyepiz]

Make sure you have enough power in the machine, 1500W min to run quad Titans. Try rendering your scene with a simple gray shader, V-Ray RT half the time crashes on it own due to multi-materials and unsupported shaders in my experience, if you still crash then it's probably hardware / Driver related.

my setup is 4 Titan cards. I am turning off one of the cards from the CUDA process in the vray utility called OCLdeviceselect and it was running great but then started to crash again. I thought it was because I was using too much of the resources, but taking out one of the cards from the vray process should have done the trick. could it be that the scene is to complex? its very frustrating, sometimes I get the blue screen, sometimes max fails and sometimes the screen flickers and then comes back

anybody out there that can help??