Argonne technical memorandum, ANL/MCS-TM-186, 1984.
Computational Load in Model Physics of the
Parallel NCAR Community Climate Model
John G. Michalakes
Ravi S. Nanjundiah
Maintaining a balance of computational load over processors is a crucial
issue in parallel computing.
For efficient parallel implementation,
complex codes such as
climate models need
to be analyzed for load imbalances.
In the present study we focus on the load imbalances in the physics
portion of the community climate model's (CCM2) distributed-memory
on the Intel Touchstone DELTA computer.
We note that the major source of load imbalance is the diurnal variation
in the computation of solar radiation. Convective weather patterns also
cause some load imbalance.
Land-ocean contrast is seen to have little effect on computational load
in the present version of the model.
CCM2, distributed-memory parallel computing, climate modeling, load imbalance,