Parts/Accelerators/Intel Xeon Phi 7250 (Knights Landing)
Accelerators · Knights Landing · 2016
Intel Xeon Phi 7250 (Knights Landing)
68-core self-hosting many-core processor. Intel discontinued the line in 2018, so the large installed base it represented left the graph within a single refresh cycle.
Why this part
Knights Landing was self-hosting: not a card in a slot but the node's only processor, booting an ordinary operating system, with 16GB of on-package MCDRAM in front of DDR4. Cori, Trinity and Stampede2 all bought it, and all three found that the memory hierarchy had to be managed explicitly to get the benefit. Intel cancelled the line in 2018, which left three major machines on a dead-end architecture and is a large part of why the laboratories now weight roadmap continuity so heavily.
Systems using this part
- Systems
- 6
- Rmax underneath
- 58.29 PFlop/s
- Units recorded
- 1,800
| System | Role | Country | Units | System Rmax | Supplied by | Rank |
|---|---|---|---|---|---|---|
| Stampede2 2017-06 | Accelerator | USA | - | 10.68 PFlop/s | Intel | #12 → |
| Trinity 2017-06 | Accelerator | USA | - | 20.16 PFlop/s | Intel | #7 → |
| Cori 2016-11 | Accelerator | USA | - | 14.02 PFlop/s | Intel | #5 → |
| Marconi 2016 | Accelerator | Italy | - | 10.38 PFlop/s | Intel | #12 → |
| Camphor 2 2016 | Accelerator | Japan | 1,800 | 3.06 PFlop/s | Intel | #34 → |
| BP CHPC 2013-10 | Accelerator | USA | - | - | Intel | - |
“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.