USA · operational · hpc

rzVernal

Also known as RZVernal

Operated by Lawrence Livermore National Laboratory at Livermore Computing Center .

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: -
Rpeak: 6.92 PFlop/s
Rmax ÷ Rpeak: -
Cores: 2,432
Power: -
Per watt: - 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	- HPE Cray EX (CORAL-2 early access)	Hewlett Packard Enterprise HPENYSE	-	Reported	hpc.llnl.gov
Accelerator	AMD Instinct MI250X Accelerators ROCm (CDNA 2) · 1.7 GHz · TSMC N6 · 560 W AMD MI-250X	AMD AMDNASDAQ	152 reported	Reported	hpc.llnl.gov
CPU	AMD EPYC 7A53 (Trento) CPUs x86-64 · 64C · 2 GHz · 7 nm · 280 W AMD Trento, 64 cores per compute node	AMD AMDNASDAQ	-	Reported	hpc.llnl.gov
Interconnect	HPE Slingshot-11 Interconnect Dragonfly · 200 Gb/s per port · Around 2 microseconds HPE Slingshot 11	Hewlett Packard Enterprise HPENYSE	-	Reported	hpc.llnl.gov
Operating system	Tri-Lab Operating System Stack Operating systems Linux distribution, RHEL-derived, HPC-tuned · Open source, LLNL-maintained TOSS 4	Lawrence Livermore National Laboratory	-	Reported	hpc.llnl.gov

The read

CORAL-2 early-access system for El Capitan on LLNL's Restricted Zone network, sister of Tioga and Tenaya. LLNL's hardware page lists 38 nodes (2 login, 36 debug), 2,432 CPU cores (AMD Trento, 64 per compute node), 152 AMD MI250X GPUs (listed as 8 per compute node), HPE Slingshot 11, TOSS 4 and a combined CPU+GPU peak of 6.916 PFLOPS, commissioned 2022 under ATS-4/EA. It is not a TOP500 entry. The platform index page lists the same system at 6.9 PFLOPS. Both pages come from the same operator, so the tier is reported.

Timeline

2022 First operational source

Site & facility

Livermore Computing Center

Location: Livermore, CA, USA
Cooling: Direct liquid cooling (warm water)
Commissioned: 1996

hpc.llnl.gov llnl.gov

Change history

2026-10-02 Added rzVernal, LLNL's restricted-zone El Capitan early-access system

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
hpc.llnl.gov	names system, part and count	AMD EPYC 7A53 (Trento), Tri-Lab Operating System Stack · counts: 152
hpc.llnl.gov	names system, part and count	AMD EPYC 7A53 (Trento), Tri-Lab Operating System Stack · counts: 152

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.