| Autor: |
Gliksberg, John, Quintin, Jean-Noel, Garcia, Pedro Javier |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
2018 IEEE 4th International Workshop on High-Performance Interconnection Networks in the Exascale and Big-Data Era (HiPINEB), Feb 2018, Vienna, France. pp.9-15 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1109/HiPINEB.2018.00010 |
| Popis: |
High-Performance Computing (HPC) clusters are made up of a variety of node types (usually compute, I/O, service, and GPGPU nodes) and applications don't use nodes of a different type the same way. Resulting communication patterns reflect organization of groups of nodes, and current optimal routing algorithms for all-to-all patterns will not always maximize performance for group-specific communications. Since application communication patterns are rarely available beforehand, we choose to rely on node types as a good guess for node usage. We provide a description of node type heterogeneity and analyse performance degradation caused by unlucky repartition of nodes of the same type. We provide an extension to routing algorithms for Parallel Generalized Fat-Tree topologies (PGFTs) which balances load amongst groups of nodes of the same type. We show how it removes these performance issues by comparing results in a variety of situations against corresponding classical algorithms. |
| Databáze: |
arXiv |
| Externí odkaz: |
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