The Livermore Time Sharing System, known as LTSS, was a supercomputer operating system originally developed by Lawrence Livermore Laboratories for Control Data Corporation's CDC 6600 and CDC 7600 supercomputers, first appearing in 1965. It was built to let the laboratory's scientific computing staff interact with these large machines through time-sharing rather than only through batch job submission, extending the sort of interactive access being explored elsewhere in the industry to Livermore's own high-performance CDC hardware. LTSS was distributed under a proprietary license and remained historic and discontinued as a standalone product, but its design was carried forward: it evolved into the Cray Time Sharing System and later into the Network Livermore Timesharing System, known as NLTSS.
Facts
Classification
LicenseProprietary (Closed Source) 1 Connections
Licensed Under
Entity-backed identity for the license enum value this item already carries, resolved to a software license concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The license fact itself stays on the item unchanged.
Sources
1. Livermore Time Sharing System (Wikipedia)
Infobox, Initial Release
1965
Infobox, License
Proprietary
Infobox, Status
Historic
- In Group: Research and Academic Operating Systems, developed by Lawrence Livermore Laboratories for CDC 6600 and CDC 7600 scientific computing
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