How to create an optimum PE layout for B1850C5 compset.

[midhun_ndr@gmail_com]

Hi,  I am running CESM 1.2 with B1850C5 compset. I have 12 nodes available with 20 cores per node (http://www.nlhpc.cl/es/cluster2014/) making a total of 240 cores.Currently, I make simulations by giving 240 cores to each components.   Here is my PE layout.


























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Overall I get a modelthroughput of 6.4myears/wday.  Here is the component wise breakup.  
    TOT Run Time:   13483.118 seconds       36.940 seconds/mday         6.41 myears/wday
    LND Run Time:      78.358 seconds        0.215 seconds/mday      1102.63 myears/wday
    ROF Run Time:       7.841 seconds        0.021 seconds/mday     11019.00 myears/wday
    ICE Run Time:    1838.970 seconds        5.038 seconds/mday        46.98 myears/wday
    ATM Run Time:    6411.420 seconds       17.566 seconds/mday        13.48 myears/wday
    OCN Run Time:    3186.190 seconds        8.729 seconds/mday        27.12 myears/wday
    GLC Run Time:       0.000 seconds        0.000 seconds/mday         0.00 myears/wday
    WAV Run Time:       0.000 seconds        0.000 seconds/mday         0.00 myears/wday
    CPL Run Time:     963.904 seconds        2.641 seconds/mday        89.64 myears/wdayHow can I optimize the model throughput?
CAM5 is the most expensive component in the compset, but total model throughput is about only half of CAM5 throughput. Why is it so?