Parts/Operating systems/Cougar
Operating systems · Cougar · 1997
Cougar
Sandia's lightweight kernel for ASCI Red's compute nodes, the direct successor to SUNMOS and PUMA.
Why this part
ASCI Red ran two operating systems side by side: the Teraflops Operating System, Intel's distributed Unix carried over from the Paragon XP/S line, on the service, I/O and system partitions, and Cougar, Sandia's own lightweight kernel, on the roughly 9,300 compute nodes actually doing the arithmetic. This part tracks Cougar. It is the third link in the SUNMOS to PUMA to Cougar lineage: same lab, same idea, refined across three systems and roughly four years, with Intel supplying the machine and Sandia supplying the software that made the compute nodes fast rather than merely present. A Sandia technical report hosted on OSTI is the source that states this directly; a separate Sandia user guide in the same archive shows the "yod"/"cougar" job-launch commands but never names the kernel in as many words, so it does not count as a second independent organisation.
Systems using this part
- Systems
- 1
- Rmax underneath
- 1.07 TFlop/s
- Units recorded
- -
| System | Role | Country | Units | System Rmax | Supplied by | Rank |
|---|---|---|---|---|---|---|
| ASCI Red 1997-06 | Operating system | USA | - | 1.07 TFlop/s | Sandia National Laboratories | #1 → |
“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.