ssrun: Experiment Recording

• ssrun writes out performance measurements into a binary file which is named after the program:

• ssrun -expname options progname prog-arg

• here the output will be binary files with the name progname.expname.ID#pid

• where ID is a letter code as follows:

  • m the master process created by ssrun
  • p slave processes in parallel execution (call to sproc())
  • f slave processes created by a call to fork()
  • e process created by a call to exec()
  • s a system call process

• examples:

• > mpirun -np 2 ssrun -mpi cgmd

• -rw-r--r-- 1 zacharov user 237672 Sep 10 13:50 cgmd.mpi.f318839

• -rw-r--r-- 1 zacharov user 4733496 Sep 10 13:50 cgmd.mpi.f318854

• -rw-r--r-- 1 zacharov user 11896 Sep 10 13:50 cgmd.mpi.m318787

• > ssrun -usertime cgmd

• -rw-r--r-- 1 zacharov user 1613562 Sep 10 14:28 cgmd.usertime.m320140

• -rw-r--r-- 1 zacharov user 1601776 Sep 10 14:28 cgmd.usertime.p320140

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