Past systems

This section introduces the changes to the large-scale general-purpose computer systems and supercomputer systems that have been in service at the Information Technology Center (Computer Center) from the past.

System configuration

Systems

General-purpose computer systems

Operational period	Model (main storage capacity)
1966 ～ 1973	HITAC 5020 (16 KW) / 5020E (65 KW) + HITAC 5020 (32 KW)
1973 ～ 1980	HITAC 8800 × 3 + HITAC 8700 × 1 (8 MB)
1980 ～ 1982	HITAC M-200H × 8 (64 MB)
1982 ～ 1985	HITAC M-280H × 6 (192 MB)
1986 ～ 1990	HITAC M-680H (128 MB) + HITAC M-682H (384 MB)
1991 ～ 1996	HITAC M-880/310 (MS: 1 GB, ES: 4 GB) + HITAC M-682H (256MB)
1996 ～ 2001	HITACHI MP5800/320 (MS + ES : 10GB)
2001 ～ 2007	Operational support system (MS + ES: 10 GB)

*1W = 4 byte, MS = Main storage device, ES = Extended storage device

Vector-supercomputers

Operational period	Model (main storage capacity)	Theoretical computational performance
1983 ～ 1987	HITAC S-810/20 (MS : 256 MB, ES : 512 MB)	800 MFlops
1988 ～ 1993	HITAC S-820/80 (MS : 512 MB, ES : 6 GB)	4 GFlops
1993 ～ 1999	HITAC S-3800/480 (MS : 2 GB, ES : 16 GB)	32 GFlops

(Massively) Parallel supercomputers

Operational period	Model (main storage capacity)	Theoretical computational performance
1996 ～ 2001	HITACHI SR2201 (1024 nodes, 256 MB/nodes)	307.2 GFlops
1999 ～ 2005	HITACHI SR8000 (128 nodes, 8 GB/nodes)	1,024.0 GFlops
2001 ～ 2007	HITACHI SR8000/MPP (144 nodes, 16 GB/nodes)	2,073.6 GFlops
2005 ～ 2007	HITACHI SR11000/J1 (44 nodes, 128 GB/nodes)	5,350.4 GFlops
2007 ～ 2011	HITACHI SR11000/J2 (128 nodes, 128 GB/nodes)	18,841.6 GFlops
2008 ～ 2014	HITACHI HA8000-tc/RS425 (952 nodes)	140,134.4 GFlops
2011 ～ 2017	HITACHI SR16000/M1 (Compute nodes: 56 nodes, 200 GB/node)	54,906.4 GFlops
2012 ～ 2018	FUJITSU PRIMEHPC FX10 (Compute nodes: 4800 nodes)	1.135 PFlops
2014 ～ 2018	FUJITSU PRIMEHPC FX10 (Compute nodes: 576 nodes)	136.2 TFlops