Supercomputers/Systems/Chervonenkis
Russia · operational · ai training
Chervonenkis
Operated by Yandex .
Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1092 of 1153 systems have a readable citation that names them, and 40 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- 21.53 PFlop/s
- Rpeak
- 29.42 PFlop/s
- Rmax ÷ Rpeak
- 73.2%
- Cores
- 193,440
- Power
- 583 kW
- Per watt
- 36.9 GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Integrator | - YANDEX Y4N-GA1-TY25-ZB0, 199 nodes | Yandex | - | Reported | top500.orgyandex.com |
| Accelerator | - NVIDIA A100 80GB, 1,592 GPUs (per Yandex) | NVIDIA | 1,592 reported | Reported | yandex.comtop500.org |
| CPU | - AMD EPYC 7702 64C 2GHz | AMD | - | Reported | top500.org |
| Interconnect | - InfiniBand with Mellanox switches | Mellanox NVDANASDAQ
rolls up to NVIDIA | - | Verified | top500.orgyandex.com |
| Operating system | Ubuntu Server Operating systems Linux distribution · Open source, free with paid support tiers Ubuntu 16.04 | Canonical | - | Reported | top500.org |
The read
Yandex's largest machine-learning supercomputer, named for the learning theorist Alexey Chervonenkis. Yandex lists 199 nodes with 1,592 NVIDIA A100 80 GB GPUs, 25,472 CPU cores, 199 TB of RAM and 583 kW, and TOP500 lists 193,440 cores (a count that includes GPU cores) of AMD EPYC 7702 with InfiniBand and 21.53 PFlop/s Rmax; both give the same Rmax and the November 2021 debut at rank 19, and it was still on the June 2026 list at rank 101. TOP500 does not name the physical site, so the row is left unlocated. The GPU count is stated by Yandex alone.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-01 Added Chervonenkis (Yandex)
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| top500.org | names system and part | Ubuntu Server |
| yandex.com | names system only | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.