ハイエンド•テクニカルコンピユーティング•サーバFX1の開発ついて

摘要

独立行政法人宇宙航空研究開発機構(JAXA：Japan Aerospace Exploration Agency)樣は、富士通のイエ ンド.テクニカルコンピューテハィング•サーバFX1を中核とするJAXA統合スーパーコンピュータシステム(JSS：JAXA Supercomputer System)を、この4月より本格稼動している。このFX1の開発の狙い、ハードウェア•ソフトゥェァの概略、特長と簡単なベンチマークでのその実証状況を紹介する。%In HPC， increasing the number of cores has become the main method of performance up rather than the frequency up. One of the major issues in this multicore approach is how to make full use of this multicore CPU capability with less user work. On the other hand, the technology of parallelization is going to reach the tens of thousands process and how to get a better scalability. In order to resolve these two major issues, Fujitsu has developed FX1 multicore based massively parallel compute node which consists of single socket nodes with the new technology Integrated Multicore Parallel ArChiTecture (IMPACT) and high speed network between nodes with the intelligent switch. The IMPACT consists of the combination of hardware barrier, shared L2 cache, increased memory bandwidth and the associated compiler. This makes multicore easy to use as a virtual single CPU more scalable. Intelligent switch which is integrated into the interconnect network, performs MPI collective operations such as synchronization and reduction by hardware. It also provides the function of broadcasting tick packets, which minimizes OS jitter. We measured the performance of micro-benchmarks and proved the effectiveness of these architectures.