Advanced Fog Scene ("God Rays")

Thu Mar 06, 2014 4:12 pm

please set the GPU to "low" ... when using instancing, its important to set the GPU to low, settling it to normal or higher can make the GPU crash. this is only when using moderate to heavy instancing.

Greetings Patrick

Thu Mar 06, 2014 4:51 pm

yes i have both set lower here, my GPU for obvious reason and the hit on the CPU less noticable on the system

Thu Mar 06, 2014 5:13 pm

umm, when you guys say set gpu low, what setting are you referring to?

Thu Mar 06, 2014 5:18 pm

DavePSB wrote:umm, when you guys say set gpu low, what setting are you referring to?

You go to "Customize" menu - "Devices" and there you can select your GPU and hit "Decrease Priority" button until it shows low priority for card.

Thanks Patrick. That worked for me.

Thu Mar 06, 2014 6:38 pm

Got it. Thanks!

Fri Mar 07, 2014 12:39 pm

Just to be clear on this: there is nothing wrong with Presto GPU with respect to this scene. The scene is too heavy and this means that Presto GPU could take more than windows watchdog timer to complete a pass (on high priority).

Basically, for best performance (say for example, you want to let your machine rendering), you can still use your Presto GPU in high priority but make sure that you have windows watchdog disabled or timer at a big value (bigger than the default 2 secs).

Best wishes

Fri Mar 07, 2014 7:08 pm

Sorry Giannis, but "watchdog"?

Sun Mar 09, 2014 2:02 pm

JQL wrote:Sorry Giannis, but "watchdog"?

http://www.thearender.com/forum/viewtop ... 519#p98519

Mon Oct 27, 2014 6:06 pm

I don't get it - scene is superbly slow. Medium should also work with Unbiased Engine.. Am i right? I get only black box with unbiased (tried TR1 and TR2 with volumetric scat on) ...

On Presto with Quadro K5000 and 24 cores of Xeon's is slow as hell. In preview window it causes screen lags even mouse is skipping through the screen - darkroom handles it but with this speed is unusable ... Am i doing something wrong ?

Of course i have latest update of Thea and graphics drivers.

Thu Oct 30, 2014 6:57 am

D-W wrote:I don't get it - scene is superbly slow. Medium should also work with Unbiased Engine.. Am i right? I get only black box with unbiased (tried TR1 and TR2 with volumetric scat on) ...

Sorry, that was indeed broken in RV1165, nevertheless it is fixed again in an internal version.

D-W wrote: On Presto with Quadro K5000 and 24 cores of Xeon's is slow as hell. In preview window it causes screen lags even mouse is skipping through the screen - darkroom handles it but with this speed is unusable ... Am i doing something wrong ?

I am not sure about the expectation here but true/unbiased volumetric lighting is time consuming. I don't think though that it is as slow as you are describing but this really depends on the expectation.

Perhaps, you can lower priority for either the CPU or GPU?