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[Official 2.64 r51026] Cycles crashes every time

Posted: Thu Oct 04, 2012 11:25 am
by MatejMo
Hi!

I downloaded the official Blender 2.64 yesterday, but unfortunately rendering with Cycles doesn't work. It crashes every time with:

Code: Select all

CUDA error: Invalid value in cuLaunchGrid(cuDisplace, xblocks, 1)
Official 2.64 RC2 works ok though.

My specs:

* Linux Mint 64 bit
* GTX 570 2.5GB
* Nvidia 295.75 drivers
* CUDA toolkit 4.0.17 (with 4.2 is the same problem)

Any suggestions what could be wrong?

Re: [Official 2.64 r51026] Cycles crashes every time

Posted: Fri Oct 05, 2012 8:00 pm
by Gilgamos
Unfortunately, I got the same problem today.

- system: Win7 64Bit
- graphics card: Quadro FX4000

Thanks for help.

Posted: Mon Oct 08, 2012 9:56 am
by MatejMo
Hi.

The solution in my case was to disable Sample as Lamp in the World tab -> Settings panel.

Posted: Mon Oct 08, 2012 10:45 am
by Gilgamos
Thanks for your workaround MatejMo - worked for me, too. Hopefully this bug will be fixed quickly, so that "sample as lamp" can still be used in connection with cycles. (I think, it helps a lot to improve Renderquality especially with HDRI-Lighting)

Posted: Mon Oct 15, 2012 6:01 pm
by MatejMo
This problem was solved in 2.64a, "sample as lamp" does not produce a crash anymore.

But, and this is kinda weird, if I have that option enabled, I hear a "screeching" noise (supposedly coming from my graphic card) every time the render re-starts (ie. I tweak something that causes render re-start).

And it gets even more weird: the noise is louder, the bigger the map resolution is.

Should I be worried? Is Cycles somehow violating my graphic card? :lol:

Has anyone else noticed such behavior?

Posted: Mon Oct 15, 2012 11:27 pm
by stiv
Noisy fan bearing?

Posted: Tue Oct 16, 2012 12:45 pm
by MatejMo
stiv wrote:Noisy fan bearing?
No, no way. This noise happens only under the conditions mentioned (2.64a if "sample as lamp" is enabled), I can render in Cycles and Octane for hours, without any fan or other noises. The card is also only two weeks old.

It's a subtle "screeching" "beep" noise, that happens once when render re-start is triggered in Cycles.

I said its was weird :)