Difference between revisions of "Improving MPI communication latency on euroben kernels"
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Revision as of 13:45, 8 February 2012
| Name | Improving MPI communication latency on euroben kernels |
|---|---|
| Description | Improving the MPI collective performance by network aware communication |
| Project financing | PRACE |
| Is active | Yes |
| Start date | 2010-07-01 |
| End date | 2012-06-30 |
The goal of this project is to improve the performance of some euroben kernels. This project is part of PRACE-1ip, WP7.5. The euroben kernel is a set of synthetic benchmark codes which is developed by PRACE. This kernel is used for benchmarking PRACE systems. Some of these benchmarks, e.g., mod2f uses MPI_Alltoall based collective for doing fast Fourier transform. Generally the MPI_Alltoall scaling on many nodes is not good. The performance of alltoall operation can be improved by introducing network awareness in alltoall operation. This can be done by writing a modified alltoall and then calling that from the application code. We tested our modified alltoall on mod2f benchmark with good results
Members
| Centre | Role | Field | |
|---|---|---|---|
| Chandan Basu (NSC) | NSC | Application expert | Computational science |
