Atomic Weapons Establishment
In June 2001, 1 systems appeared in the TOP500 list.
| Rank | System | Procs | Memory(GB) | Rmax (GFlops) | Rpeak (GFlops) | Vendor |
|---|---|---|---|---|---|---|
| 247 | SP P2SC 160 MHz | 252 | N/A | 109.9 | 161.2 | IBM |
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Seymour Cray [when he was told that the Cray-1 memory system, which did not have parity checking, was malfunctioning at Los Alamos due to the altitude.]#3 pencils and quadrille pads.