Video: The MareNostrum
summary
MareNostrum is a chapel‑installed supercomputer delivering 13.7 petaflops total across 3,456 nodes with about 390 TB memory and a 1.3–1.5 MW power envelope; the Skylake CPU racks and nonblocking Infiniband fabric occupy 160 m² with dense cabling and 28 kW racks. A Power9+NVIDIA block (54 nodes, 1.5 PF) is already installed, a Fujitsu ARM ~0.5 PF partition is pending, and real measurements show a large gap between peak and application performance (LINPACK ~6.47 PF versus higher theoretical peak).
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