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Note that after each gather interval the data is removed from memory, so it is the user's responsibility to "remember" any data from previous callbacks that they want to keep (be careful not to use up all machine memory).

Ragged Arrays

MPIDataSource supports "ragged" 1D arrays (also called variable-length, or vlen, arrays).  An example would be an array of photon energies (or positions) whose length changed for every LCLS shot.  If you have such an array you must start the HDF5 dataset name with the string "ragged_".

Job Submission Script

The following script can be a useful pattern to follow for submitting batch jobs.  Change the script to use the appropriate directory, experiment name, and analysis python-script name.   Then make the script executable with a command like "chmod +x submit.sh" and submit a job with a command like "./submit.sh 123" where "123" is the run number to be analyzed.

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