Supercomputers/Systems/PARAM Rudra-104
India · operational · hpc
PARAM Rudra-104
Operated by C-DAC .
Researched with AI assistance, checked by scripts. These rows were researched by AI agents reading public operator, laboratory and vendor sources, appended by scripts and checked by automated validation; no subject-matter expert has reviewed them (how this site is made). A mechanical second-reader pass has since fetched every cited source: 1350 of 1540 systems have a readable citation that names them, and 64 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
- 7.03 PFlop/s
- Rpeak
- 10.35 PFlop/s
- Rmax ÷ Rpeak
- 67.9%
- Cores
- 79,200
- 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 | - C-DAC Rudra-104 Server | C-DAC | - | Reported | top500.org |
| Accelerator | - NVIDIA A100 | NVIDIA | - | Reported | top500.org |
| CPU | - Xeon Gold 6240R 24C 2.4GHz | Intel | - | Reported | top500.org |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds InfiniBand HDR100 | NVIDIA | - | Reported | top500.org |
| Operating system | Rocky Linux Operating systems RHEL-compatible Linux, community-maintained · Downstream rebuild of Red Hat Enterprise Linux source Rocky Linux 9.6 | Rocky Enterprise Software Foundation | - | Reported | top500.org |
The read
C-DAC Rudra-104 server cluster with NVIDIA A100 GPUs, listed at rank 245 on the June 2026 TOP500 with 79,200 cores of Xeon Gold 6240R 24-core 2.4 GHz, HDR100 InfiniBand, Rocky Linux 9.6, 7.03 PFlop/s Rmax and 10.35 PFlop/s Rpeak (NVIDIA HPC-X and cuBLAS). It is several times the size of the 3 PFlop/s NSM PARAM Rudra machines such as param-rudra-iuac, but TOP500 gives the site only as C-DAC, with no GPU count, location or power figure, so none is recorded. The CPU-only sibling is param-rudra-103. Ranked 0 here because the June 2026 list edition is already full in the dataset.
Timeline
- 2026 First operational source
Change history
- 2026-10-18 Added PARAM Rudra-104 (C-DAC)
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.