Vray and Yeti Batch render issues

[scorpes]

Hi, I have problems with batch rendering on the renderfarm with Yeti and Vray. Some computers work and some do not. All computers have the same linux system: Ubuntu 14 Trusty. The computers that do not work are fast machines with more RAM than the ones that do work. Any Ideas?

Output:
[2014/Aug/22|11:33:32] V-Ray: pgYetiVRay: reading /mnt/he-film/test_project/Maya/yeti/Yeti_cache/test.0026.fur
[2014/Aug/22|11:33:32] V-Ray: Compiling geometry...
maya.bin: malloc.c:2372: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 *(sizeof(size_t))) - 1)) & ~((2 *(sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long) old_end & pagemask) == 0)' failed.



I am using:
V-Ray for Maya 2014 version 2.45.01, revision 24870 and Yeti v1.3.12

[vlado]

This seems more like a Yeti issue rather than V-Ray. How many cores do you have in these machines? Perhaps Yeti needs more memory proportionally to the number of threads...

Best regards,
Vlado

[scorpes]

Oke that could be the reason, the computers that do work have 8 cores and the computers that are not working have 24 cores

[scorpes]

Do I need to increase dynamic memory limit for this?

[vlado]

No, I don't think it will help.

Yeti has an option to specify how many threads to use when generating the hair - perhaps try to set this to 8 and see if it helps?

Best regards,
Vlado

[scorpes]

Ok thanks, do you know where I can find that option in Yeti?

[vlado]

Ok thanks, do you know where I can find that option in Yeti?

The documentation of Yeti says that the Yeti Maya node has an attribute "Render Threads" in its "Render" rollout:

Render Threads - The number of threads to use when evaluating the graph at render time, 0 = all threads.

Best regards,
Vlado

[scorpes]

Lol, I see it in the docs, but I can't find it in the interface. I 've posted this issue at the yeti forum but I am still waiting for replies...

[vlado]

Ok. Well, if you don't get a reply, there is a way to hack it through the V-Ray post-translate Python callback, so let me know how it goes.

Best regards,
Vlado

[scorpes]

it would be cool to get the post-translate hack. Colin responded on the Yeti forum and asked if you could contact him about this issue