The IFS model: a parallel production weather code
Parallel Computing - Special issue: climate and weather modeling
File-Access Characteristics of Parallel Scientific Workloads
IEEE Transactions on Parallel and Distributed Systems
Lessons from characterizating the input/output behavior of parallel scientific applications
Performance Evaluation - Special issue on tools for performance evaluation
Using MPI-2: Advanced Features of the Message Passing Interface
Using MPI-2: Advanced Features of the Message Passing Interface
Dynamic file-access characteristics of a production parallel scientific workload
Proceedings of the 1994 ACM/IEEE conference on Supercomputing
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The Integrated Forecast System (IFS) code is a parallel MPI application running on multiple tasks, a specified number of which, during its execution, writes output to a single global file at the end of several output time intervals. It can therefore write output multiple times during a given run. With the appropriate choice of parallel writing routine the overhead of writing to disk can be effectively hidden from the computation. We shall show how this is possible with careful use of MPI-IO routines on top of the IBM General Parallel File System (GPFS).