What is the GRAPE System
The GRAPE (GRAvity PipE) system is a computer specialized for gravitational N-body problems. It can quickly calculate the most computationally intensive gravitational interactions between particles in gravitational N-body problems. The Center for Computational Astrophysics finished the operation of GRAPE-DR and GRAPE-9 in March 2022.
Specifications
| Location | Mitaka Campus (Osawa, Mitaka, Tokyo, JAPAN) |
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| Prime manufacturer | The University of Tokyo, Hamamatsu Metrix Co., Ltd., and K & F Computing Research Co. |
| Basic specifications of the GRAPE-9 system | Number of nodes: 8 CPU: Intel Core i5 4670 3.4 GHz Total main memory: 16 GB |
| Basic specifications of the GRAPE-DR system | Number of nodes: 16 CPU: Intel Core i7 2600 K 3.4 GHz Total Main Memory: 16 GB |
History
| FY 2006 | Center for Computational Astrophysics began operation of GRAPE-5 and GRAPE-6. |
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| FY 2007 | GRAPE-7 began operation. GRAPE-5 ended operation. |
| FY 2009 | GRAPE-DR commissioning operations began. |
| FY 2010 | GRAPE-DR won first place in Green500. |
| FY 2012 | GRAPE-DR began full-scale operation. |
| FY 2014 | GRAPE-9 commissioning operations began. GRAPE-6 ended operation. |
| FY 2015 | GRAPE-9 began full-scale operation. GRAPE-7 ended operation. |
| FY 2022 | GRAPE-DR and GRAPE-9 ended operation. |
