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Life of a typical computing job (2)
The script is run remotely on one of the reserved compute nodes, a program 'mpirun' starting the program as a process on each of them. Each process gets a unique identity, when running the MPI initializing subroutine/function call
Each process communicates with the other processes, reading and writing in local and global files
The parallel program exits normally, exits because of a serious error condition, or is aborted by the batch system because it has reached the maxjoblength limit
All the reserved compute nodes are cleaned out automatically, removing still existing processes and local files. A log file, the global files and the home directory files are kept. An e-mail is sent to the user.