Maya 2012 + V-Ray 2.0 = completed render freezes Maya GUI

[Fredrik Averpil]

Hello,

We have an urgent issue where the Maya 2012 GUI totally freezes just after completing a render in the V-Ray frame buffer. This is where Maya stops its output:

[2011/May/18|23:29:00] V-Ray: (Estimated time remaining: 0h 0m 0.0s): 100 % completed
[2011/May/18|23:29:01] V-Ray: Number of raycasts: 6138781600
[2011/May/18|23:29:01] V-Ray: Camera rays: 650476611
[2011/May/18|23:29:01] V-Ray: Shadow rays: 4566503320
[2011/May/18|23:29:01] V-Ray: GI rays: 137751120
[2011/May/18|23:29:01] V-Ray: Reflection rays: 836332084
[2011/May/18|23:29:01] V-Ray: Refraction rays: 3687934
[2011/May/18|23:29:01] V-Ray: Unshaded rays: 0
[2011/May/18|23:29:01] V-Ray: Number of intersectable primitives: 2337740
[2011/May/18|23:29:01] V-Ray: SD triangles: 2335951
[2011/May/18|23:29:01] V-Ray: MB triangles: 0
[2011/May/18|23:29:01] V-Ray: Static primitives: 1788
[2011/May/18|23:29:01] V-Ray: Moving primitives: 0
[2011/May/18|23:29:01] V-Ray: Infinite primitives: 1
[2011/May/18|23:29:38] V-Ray: Successfully written image file "P:/server_path/maya//../render/maya/testrender/tmp/Exterior_v006_ls_renderCam_masterLayer..exr"
[2011/May/18|23:29:38] V-Ray: Total frame time 5h 20m 59.2s (19259.2 s)
[2011/May/18|23:29:38] V-Ray: Total sequence time 5h 20m 59.6s (19259.6 s)
[2011/May/18|23:29:38] V-Ray: Render complete
[2011/May/18|23:29:38] V-Ray: ========================
[2011/May/18|23:29:38] V-Ray: Clearing exporter memory...
[2011/May/18|23:29:39] V-Ray: Total time clearing exporter memory 0h 0m 0.1s (0.1 s)


The bottom left progress bar inside of the Maya 2012 GUI says 100% but Maya is totally unresponsive.
Have anyone seen or experienced this and is there a known work around or perhaps an updated and stable build where this has been adressed?

Extra info:
Maya 2012 64-bit
V-Ray 2.0 official release

[ivaylo.ivanov]

Which OS are you using?

[Fredrik Averpil]

Windows 7 Professional 64-bit. No service packs or anything like that.

[vlado]

Do you have the V-Ray frame buffer enabled or disabled?

Best regards,
Vlado

[Fredrik Averpil]

The V-Ray framebuffer was enabled and the image was fully renderered. No incomplete buckets or anything like that.

[vlado]

Does it work with the regular Render View?

Best regards,
Vlado

[Fredrik Averpil]

We never use the Maya render view any more, now that we have the excellent V-Ray framebuffer
However, we could give that a try tonight and I will let you know how that goes.

[SreckoM]

Happened to me also. Only with VFB with standard window it works, but after hard restarting Maya.

[vlado]

Ok then; will be looking into it. There is probably something that we don't do quite right with Qt...

Best regards,
Vlado

[Fredrik Averpil]

The problem persists (although inconsistent) and it also happens when just region rendering using the V-Ray framebuffer.

[ricoholmes]

Seeing a simliar (if not the same) problem here. VFB appears to freeze everything, but CTRL-Alt-DEL > Task Manager "switches" to windows (and Maya/VFB) still working fine.
Happens every time I'm going to save image/multiple images from VFB as well. It all appears to freeze, with the file requester hiding behind the VFB. Again, CTRL-Alt-DEL > Task Manager fixes this (feels like alt-tabbing, but using the task manager).

It's a workaround, but a terribly uncomfortable one at the moment.

[Metzger]

I have V-Ray also locking up hard while rendering with the Maya Framebuffer and VFB. The only way to fix this is to set Max CPU's to 10 instead of 12 on a 6Core proc. But there currently isn't a way to limit CPU's in RT CPU mode is there? That also causes my computer to lock up until the render finishes.

[t.petrov]

Metzger:
You can limit the number of threads used by starting V-Ray Standalone manually and specifying -numThreads=10.
The complete command will be "full_path_to\vray.exe -server -numThreads=10"

[t.petrov]

I forgot the -portNumber flag, so the complete command is "full_path_to\vray.exe -server -numThreads=10 -portNumber=20207"

[Metzger]

I will try that, but what about for RT CPU mode?