ratGPU OpenCL raytracing benchmark

[jogshy]

GPU renderer got to the 4th or 5th scene (?) then a pop-up came up saying "ratGPU cannot render the tile" or something to that effect.

system is:
....
WinXP-64

For simple scenes like the ambient occlusion one or the balls probably the watchdog didn't pop, but the last scene is very complex so if a pass took more than 5 secs to execute then the watchdog probably popped causing the error.
For winXP you might need to use a second card and to disable the primary adapter or the GPGPU watchdog will pop. I'm afraid WinXP is not really prepared to perform GPGPU with only one card 8( With Vista/7 should work better.


You mention the CPU device crashes... have you tried it without OC, pls? The CPU device test stresses all the cores so it might be due to OC, but I'll revise the code searching for bugs just in case.
Btw, are you using only the CPU device or in combination with the GPU ones?

Mine-SLi GTX460 @ 860/2100.

Nice SLI scaling! ( > 2x my score! ). Are you using 192bits cards or 256bits ones?


Btw, you can use BOTH cpu+gpu hybrid rendering ( play a bit with the "use this device" option ), but sometimes the GPU has to wait the CPU so the result might be worse than using only the GPU. If you disable the GPU device and you use only the CPU you'll notice the GPU is much much much faster. I recommend to check in only the GPU devices to render fast and only the CPU to perform a CPU OC stress test.
For instance, compare the 600s of the GPU-only renderer vs the 2000s of the CPU-only:



CPU+GPU together did 721s, worse than GPU-only because my CPU is much slower than a Fermi card so it only slowed down the GPU ( a chain is only as strong as its weakest link ).

[Arctucas]

@jogshy,

Thanks.
The cards are eVGA SuperClocked External Exhaust 1GB versions-01G-P3-1373-AR, so, 256-bit.

Here is a run @900/2100:

[STEvil]

For simple scenes like the ambient occlusion one or the balls probably the watchdog didn't pop, but the last scene is very complex so if a pass took more than 5 secs to execute then the watchdog probably popped causing the error.
For winXP you might need to use a second card and to disable the primary adapter or the GPGPU watchdog will pop. I'm afraid WinXP is not really prepared to perform GPGPU with only one card 8( With Vista/7 should work better.


You mention the CPU device crashes... have you tried it without OC, pls? The CPU device test stresses all the cores so it might be due to OC, but I'll revise the code searching for bugs just in case.
Btw, are you using only the CPU device or in combination with the GPU ones?


Nice SLI scaling! ( > 2x my score! ). Are you using 192bits cards or 256bits ones?


Btw, you can use BOTH cpu+gpu hybrid rendering ( play a bit with the "use this device" option ), but sometimes the GPU has to wait the CPU so the result might be worse than using only the GPU. If you disable the GPU device and you use only the CPU you'll notice the GPU is much much much faster. I recommend to check in only the GPU devices to render fast and only the CPU to perform a CPU OC stress test.
For instance, compare the 600s of the GPU-only renderer vs the 2000s of the CPU-only:



CPU+GPU together did 721s, worse than GPU-only because my CPU is much slower than a Fermi card so it only slowed down the GPU ( a chain is only as strong as its weakest link ).

Ah, the hybrid rendering is what made it crash. I didnt realize you could have multiple devices selected..

As to the GPU tests, they for sure took more than 5 seconds and didnt cause the error until that ~4th test (final test?).

Giving these a try to see if they help:

http://msdn.microsoft.com/en-us/library/ff553890.aspx
http://msdn.microsoft.com/en-us/library/ff553893.aspx


edit..

oh wow.. that was fast lol. 282.2

http://www.ratgpu.com/verify.aspx?k=...EB1CE716751B0C

[jogshy]

Giving these a try to see if they help:
http://msdn.microsoft.com/en-us/library/ff553890.aspx
http://msdn.microsoft.com/en-us/library/ff553893.aspx

Interresting, thx! I'll try tomorrow.

edit..
oh wow.. that was fast lol. 282.2

Now you own the WR

Btw, I've just uploaded the 0.4.3 with some minor bugs corrected and Ubuntu 10(.04/.10) support:

[jogshy]

Here's a CPU only run on my 980x @ 4.45 w/ 12gb of ddr3 2000mHz cas10

Ooh nice! So a dual socket will use about 600s, yep. Funny to see 2x 1000$ CPUs + the SR-2 MB catching a 160$ card

Giving these a try to see if they help:

http://msdn.microsoft.com/en-us/library/ff553890.aspx
http://msdn.microsoft.com/en-us/library/ff553893.aspx

By the way, did you use that to make WinXP to pass the test #4, pls?
For Vista/7 is easy and I do it in the .exe installer but a graphics driver engineer told me it was virtually impossible to disable the watchdog for WinXP ...

[STEvil]

Ooh nice! So a dual socket will use about 600s, yep. Funny to see 2x 1000$ CPUs + the SR-2 MB catching a 160$ card




By the way, did you use that to make WinXP to pass the test #4, pls?
For Vista/7 is easy and I do it in the .exe installer but a graphics driver engineer told me it was virtually impossible to disable the watchdog for WinXP ...

Yeah, I used those registry changes to pass the #4 test. I set the GPU watchdog timeout to 200.

[jogshy]

Yeah, I used those registry changes to pass the #4 test. I set the GPU watchdog timeout to 200.

Nice, I'll tweak the installer for the next version based on that. Thanks !

[jogshy]

I've posted the 0.4.4 with several optimizations and some minor bugs corrected.
Now it takes around 88s for a GTX460 instead of 600s.