GRAPE 현황

Hardware Configuration Master –2 x Dual Core Xeon 5130 (2 GHz) –2 GB memory –500 GB hard disk 4 Slaves –2 x Dual Core Xeon 5130 (2 GHz) –1 GB memory –80 GB hard disk GRAPE6-BLX Boards –Each has a particle memory size of 260K. –Each has peak performance of ~ 130 Gflops. Giga Bit Switching Hub & UPS

Softeware Configuration Cluster Environment –Redhat Enterprise WS –MPICH, MPICH2 –PBS Queue service –NFS (Network File System) –NIS (Network Information Service) in preparation Almost no security measures –Frequent backup suggested

Speed Test ParticleProcessor Wallclock Time (s) 110, , , , –Compound Galaxy (Halo, Disk & Bulge) –Makino’s parallel tree code for GRAPE –~ 1 Gyr –Error in energy less than 0.1% –Almost no difference when using 100 MBps hub