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Comparing ray/doc/notes/ReleaseNotes (file contents):
Revision 1.275 by greg, Wed Feb 3 01:57:06 2016 UTC vs.
Revision 1.276 by greg, Fri Mar 4 16:52:03 2016 UTC

# Line 2073 | Line 2073 | to enable on input.
2073  
2074   Rewrote bsdf2klems to support tristimulus color and call wrapBSDF.
2075   Did the same for bsdf2ttree.  Function specifications still gray only.
2076 +
2077 + Reduced a problem where rvu or rholo would be slow to quit when
2078 + run with many processes on a large model or one with a large
2079 + ambient file (taking lots of memory).  We were waiting for
2080 + processes to quit one-by-one, which takes some time for each
2081 + process as it disentangles its shared memory.  We now
2082 + wait for all the processes together, so they can disentangle
2083 + in parallel.  It can still take up to a minute in some cases,
2084 + but not 10 minutes like it was taking before the fix.

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