I/O

Reading/writing data

Many different approaches.

Each processes can read/write or one process can read/write

and pass the values to the other processes

Need to be concerned if the data is extremely large since

there can be a bottleneck in I/O to/from disk.

All tasks need number of points and time steps

All tasks need initial amplitudes, choices:

one process reads all data splits it up among processes

all processes read all data, throw out all but their chunk

all processes read their own input file

all processes read appropriate lines from a direct-access file

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