DR slaves not finishing lightcache

[ruud3dv]

When rendering using DR slaves are running at 100% cpu usage but suddenly don't join in rendering buckets anymore. Yesterday this all worked fine. Using brute force+lightcache so it seems stuck at lightcache. But even the faster renderslaves that normally finish lightcache before my workstation is finished don't get to join with rendering buckets.
Restarting slaves and workstation hasn't made a difference.

Workstation itself renders fine, Vray messages window on workstation doesn't show anything weird either.

On all slaves the end of the vraylog.txt looks like this:

[2012/A/27|18:02:58]   Compiling lights geometry.
[2012/A/27|18:02:58]   Preparing ray server.
[2012/A/27|18:02:58]     Creating and initializing 8 thread(s).
[2012/A/27|18:02:58]     Allocating memory for build data of 291913 faces (2335304 bytes, 2.2 MB).
[2012/A/27|18:02:58]     Initializing face build data.
[2012/A/27|18:02:59]     Creating 'done' event.
[2012/A/27|18:02:59]     Starting first thread.
[2012/A/27|18:02:59]     Waiting for thread completion.
[2012/A/27|18:02:59]     Releasing thread resources.
[2012/A/27|18:02:59]     SDTree statistics:
[2012/A/27|18:02:59]       Total number of faces stored: 291913
[2012/A/27|18:02:59]       Max tree depth: 41
[2012/A/27|18:02:59]       Average tree depth: 21.8492
[2012/A/27|18:02:59]       Number of tree nodes: 103129
[2012/A/27|18:02:59]       Number of tree faces: 1051046
[2012/A/27|18:02:59]       Number of tree leafs: 45984
[2012/A/27|18:02:59]       Average faces/leaf: 22.8568
[2012/A/27|18:02:59]       Memory usage: 30.45 MB
[2012/A/27|18:02:59]     Scene bounding box is [-59.5953,-515.895,-10.1581]-[500.043,20.2263,22.4875]
[2012/A/27|18:02:59]   Preparing direct light manager.
[2012/A/27|18:02:59]   Preparing global light manager.
[2012/A/27|18:02:59]     Irradiance sample size is 84 bytes
[2012/A/27|18:02:59]   Broadcasting NOTIFY_PRE_RENDERFRAME.
[2012/A/27|18:02:59] beginFrame() done.
[2012/A/27|18:02:59] Broadcasting NOTIFY_BEGIN_RENDERING_ACTUAL_FRAME.
[2012/A/27|18:02:59] Photon size is 56 bytes.
[2012/A/27|18:02:59] Light cache sample size is 120 bytes.
[2012/A/27|18:02:59] Building light cache.
[2012/A/27|18:02:59] Tracing 1000000 image samples for light cache in 12 passes.

[2012/A/27|18:02:59] Setting up 8 thread(s)
[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

[2012/A/27|18:02:59]   Light cache time interval is (-55.000000, 45.000000)

I've got a deadline tomorrow so i'm really getting desperate, any ideas are much appreciated!!

[Morne]

how about precalc the lightcache on your workstation, then just render from file for DR?

[ruud3dv]

Yeah that works, but I have to render 60 housing variations.
They are all layed out on a grid and I'm using a container for the surrounding, lighting, and camera etc that moves to all 60 positions on the grid to render it. Unfortunately I can't precalc and autosave lightcache for each frame separately.

I haven't had this problem before, it may have to do with the use of a container since I haven't used those before either. The weird thing is that sometimes it works, but more often the slaves seem to freeze (with 100% cpu) on lightcache stage.