4 C2050 GPU Load 10%~30%

[johnsonvin]

dear all,
my computer's configration;
E5620*2/4G*6/500G/C2050*4/Win 7 64bit/3D MAX 2011/V-Ray 2.0 license customer.
Drivers Vesion: C2050 (260.81 the latest)

Results:
GPU loads:10%~30% about 300Kpaths/s even can not up to35%, i dont know why? if i need some special confirations for V-Ray 2.0 ?please tell me.
the Technical Support Manager told me to low the version of C2050 Drivers,but i have use the 258.xx, it's also performance like this.and what should i do next?
Sorry for my pool english words.

[vlado]

Works for me with the 258.xx drivers and 3 GPUs (one GTX 480 and two Tesla 2050). See this thread: http://www.chaosgroup.com/forums/vbu...working-at-50-...

Best regards,
Vlado

[johnsonvin]

Vlado,thanks for your reply,
did you use GTX 480 for video out? two Tesla C2050 for computing? or all of them for computing?
and what OS did you use? thanks.

[vlado]

The video is from the GTX 480; all of them are computing at close to 100%. OS is Windows 7 64-bit.

Best regards,
Vlado

[johnsonvin]

Vlado, thanks,
did you have special V-Ray 2.0 configration? or can you give me some Screenshots about V-Ray 2.0's configration?
can you mail me: Johnson_Gao@amaxit.net or Johnsongao@msn.cn appreciate for your help,thanks very much.

[vlado]

No, there is nothing special; everything is the default...

Best regards,
Vlado

[johnsonvin]

Vlado,thanks,
i have a test today,i use 2 c2050 cards can upto 2000Kpaths/s,3 c2050s can upto 3000Kpaths/s,but it can't support 4 c2050s.
does V-Ray 2.0 can't support many cards? how about 8 c2050 in a machine?

[vlado]

V-Ray itself has no limitation on the number of cards to use; we have tried it successfully on systems with up to 8 GPUs. I'm not quite sure where is the problem in your case though, I will have to try and reproduce it here on a 4 GPU system.

Best regards,
Vlado