Articles | Volume 8, issue 3
https://doi.org/10.5194/gmd-8-769-2015
https://doi.org/10.5194/gmd-8-769-2015
Model experiment description paper
 | 
24 Mar 2015
Model experiment description paper |  | 24 Mar 2015

Efficient performance of the Met Office Unified Model v8.2 on Intel Xeon partially used nodes

I. Bermous and P. Steinle

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Short summary
The trend in High Performance Computing (HPC) is for less memory bandwidth relative to the computational power of each core. With each CPU having multiple cores, the best way of using HPC systems is not always straightforward. For some time critical applications, shorter run times can be obtained by using only some of the cores per CPU and keeping the others idle. A number of factors are required to consider, but this provides a simple technique for a significant gain in the application speed.