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The Scheduler
Q: Where do I get a list of files to run through my macro?
STAR data files are so large that it is very inefficient to maintain a list of files and to run that list through a single CPU
- The network is the bottleneck
- For example: the run 4 DSTs use 40 TB of disk space and the disks will fail if you try to move a significant fraction of this around the farm
It is better to move your job to the data
- The STAR DSTs are stored on local disks at RCF
- You can send your job to the CPU where the data is stored
- This is a very efficient use of the network because only your histograms have to come back over the network
The STAR Scheduler does this for you automatically