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Recovery can also be paired with the checkpointing options described above. In the case of a time limit, this basically serves as an extension to the original time limit. Incremental renders can be broken into an arbitrary number of time slices this way. Note that each recovery requires the scene and all of its assets to be reload, however, so care should be taken with this. Additionally, this feature is only supported for OpenEXR files.
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Bucket/tile order must be set to horizontal or vertical when recovering from a non-incremental render. Bucket/tile order must be set to horizontal, vertical, spiral, or random when recovering from an incremental render. |
System Commands
RenderMan can call a system command after a checkpoint using Option "checkpoint" "string command"; this can also be specified through the rendermn.ini file with /prman/checkpoint/command. If system calls are enabled, then after a checkpoint has been written, the specified command will be called. This is synchronous; the rendering threads are quiescent while this runs and will not resume again until the process returns, avoiding possible race conditions if the command takes a while.
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