In:
Geoscientific Model Development, Copernicus GmbH, Vol. 12, No. 11 ( 2019-11-11), p. 4729-4749
Abstract:
Abstract. Rapidly evolving computational techniques are making a large gap between
scientific aspiration and code implementation in climate modeling. In this
work, we design a simple computing library to bridge the gap and decouple
the work of ocean modeling from parallel computing. This library provides
12 basic operators that feature user-friendly interfaces, effective
programming, and implicit parallelism. Several state-of-the-art computing
techniques, including computing graph and just-in-time compiling, are
employed to parallelize the seemingly serial code and speed up the ocean
models. These operator interfaces are designed using native Fortran
programming language to smooth the learning curve. We further implement a
highly readable and efficient ocean model that contains only 1860 lines of
code but achieves a 91 % parallel efficiency in strong scaling and 99 %
parallel efficiency in weak scaling with 4096 Intel CPU cores. This ocean
model also exhibits excellent scalability on the heterogeneous Sunway
TaihuLight supercomputer. This work presents a promising alternative tool
for the development of ocean models.
Type of Medium:
Online Resource
ISSN:
1991-9603
DOI:
10.5194/gmd-12-4729-2019
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2019
detail.hit.zdb_id:
2456725-5
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