Use cluster storage – Apple Compressor (4.0) User Manual
Page 232
Chapter 8
Use Apple Qmaster to set up a distributed processing system
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3
In the dialog that appears, enter and verify a password, and click OK.
4
To apply this change, click OK in the Apple Qmaster Sharing window.
Important:
If you’re making changes to existing settings and this computer is already providing
processing services, clicking OK immediately resets this computer’s services. If this computer is
also the cluster controller, any current jobs are terminated.
Use cluster storage
By default, the Apple Qmaster distributed processing system saves temporary process files in the
following location on the cluster controller: /Users/username/Library/Application Support/Apple
Qmaster/Storage/. You can also choose any other location on a local disk for this scratch storage.
Computers in the cluster will access this location as needed.
Note: If you submit a reference movie for distributed processing, the Apple Qmaster distributed
processing system automatically copies the appropriate media files to the processing cluster
by either manually mounting the network storage on all of the cluster’s nodes, or by using
shared storage on all the nodes (for example, Xsan). For best performance, you can avoid this file
transfer step by making sure that the media files specified in the reference movie are available
to each node of the Apple Qmaster cluster. Compressor users can change this behavior by
adjusting cluster options in Compressor preferences. For more information, see
on page 211.
If you’re processing large source media files that exceed the available storage space on the
startup disk, you may run out of storage space on that disk. There are a number of things you can
do to address this:
•
Change the cluster storage location to a disk with more free space.
•
Configure cluster storage settings to delete files more frequently.
•
Set Cluster Options preferences in Compressor to “Never copy source to cluster.”
You can also define which ports Apple Qmaster uses for service advertisements.