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For layouts like the one above (with OCN running in parallel from everything else and ICE and LND running in parallel on the same cores used for ATM), Pat computes max (OCN, ATM + max(LND, ICE)) and compares it to the "TOT Run Time". The difference between these numbers is the amount of time spent in coupler computation and communication overhead. "CPL COMM Time" is kind of useless because it can include load imbalance from components that finish early (better load balancing generally leads to smaller "CPL COMM TIme" means better load balancing ). CPL Run Time is also unpredictable because it includes some MPI communication and may depend on which nodes CPL is running on.
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