OPERATION STATUS OF THE EARTH SIMULATOR

As many large-scale distributed parallel programs are run efficiently in the Earth Simulator (ES), I/O throughput between the tape library system and the work disk of the PNs became the bottleneck for simulations. So, in 2003, we introduced NQSII and Mass Data Processing System (MDPS) to address this problem and to improve system utilization and maintainability. In this paper, the new system (a scheduling algorithm and MDPS) and the recent program execution status for the ES are described.