Supercomputers/Systems/Grace (TAMU HPRC)
USA · operational · hpc
Grace (TAMU HPRC)
Also known as Grace; Texas A&M Grace
Operated by Texas A&M University .
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
- 2.64 PFlop/s
- Rpeak
- 4.83 PFlop/s
- Rmax ÷ Rpeak
- 54.7%
- Cores
- 43,200
- 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 | - Dell PowerEdge R640/R740/R840 nodes | Dell Technologies | - | Reported | top500.org |
| Accelerator | - 100 A100 GPU compute nodes plus 17 T4/RTX6000 GPU nodes | NVIDIA | - | Reported | research.tamu.edu |
| CPU | - Intel Xeon Gold 6248R/6248 24C 3.0GHz (Cascade Lake), 800 regular compute nodes | Intel | - | Reported | top500.orgresearch.tamu.edu |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds HDR 3:1 InfiniBand (TOP500: HDR100) | NVIDIA | - | Reported | research.tamu.edutop500.org |
The read
Texas A&M's flagship Dell cluster of Xeon Gold 6248R-class Cascade Lake nodes on HDR InfiniBand. TAMU HPRC lists 800 regular compute nodes, 100 A100 GPU nodes, 17 single-precision T4/RTX6000 GPU nodes and 8 large-memory (3 TB) nodes, with 5+ PB of Lustre and a stated minimum aggregate peak of 6 PFLOPS. TOP500 shows 43,200 cores at 2.64 PFlop/s Rmax and 4.83 PFlop/s Rpeak (CPU partition only), first listed in November 2020 at 133rd and slipping to 479th by November 2025. TOP500 is the only source for the HPL figures and core count, so the tier is reported.
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
- 2026-10-02 Added Grace, Texas A&M's Dell cluster, 133rd on the November 2020 TOP500
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 |
|---|---|---|
| research.tamu.edu | names system and part | NVIDIA InfiniBand HDR |
| top500.org | names system and part | NVIDIA InfiniBand HDR |
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
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.