# NLTSS

> supercomputer operating system developed by Lawrence Livermore National Laboratory

**Wikidata**: [Q6954684](https://www.wikidata.org/wiki/Q6954684)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/NLTSS)  
**Source**: https://4ort.xyz/entity/nltss

## Summary
NLTSS (Network Livermore Timesharing System) is a supercomputer operating system developed by Lawrence Livermore National Laboratory (LLNL) to manage high-performance computing resources. It was designed for use on supercomputers like the Cray-1, Cray X-MP, and Cray Y-MP, replacing the earlier Cray Time Sharing System.

## Key Facts
- **Developed by**: Lawrence Livermore National Laboratory (LLNL), a federal research institute in Livermore, California.
- **Platforms**: Used on Cray-1, Cray X-MP, and Cray Y-MP supercomputers.
- **Replaced**: Cray Time Sharing System (CTSS), an earlier operating system for Cray supercomputers.
- **Aliases**: Also known as Network Livermore Timesharing System (NLTS) and New Livermore Time Sharing System (NLTSS).
- **Instance of**: Operating system and supercomputer operating system.
- **Wikipedia title**: NLTSS (English language only).
- **Wikidata description**: Supercomputer operating system developed by Lawrence Livermore National Laboratory.

## FAQs
### Q: What was NLTSS used for?
A: NLTSS was designed to manage high-performance computing resources on supercomputers like the Cray-1, Cray X-MP, and Cray Y-MP. It replaced the earlier Cray Time Sharing System (CTSS) and was developed by Lawrence Livermore National Laboratory (LLNL).

### Q: Who developed NLTSS?
A: NLTSS was developed by Lawrence Livermore National Laboratory (LLNL), a federal research institute in Livermore, California, United States. LLNL was founded in 1952.

### Q: What supercomputers did NLTSS support?
A: NLTSS was used on the Cray-1, Cray X-MP, and Cray Y-MP supercomputers. It replaced the Cray Time Sharing System (CTSS) and was part of LLNL's efforts to advance supercomputing technology.

### Q: What was NLTSS's predecessor?
A: NLTSS replaced the Cray Time Sharing System (CTSS), an earlier operating system for Cray supercomputers. NLTSS was developed by Lawrence Livermore National Laboratory to improve performance and functionality.

### Q: Is NLTSS still in use today?
A: The source material does not provide information on whether NLTSS is still in use today. However, it was developed by LLNL and used on supercomputers like the Cray-1, Cray X-MP, and Cray Y-MP.

## Why It Matters
NLTSS played a crucial role in advancing supercomputing technology at Lawrence Livermore National Laboratory (LLNL). As a supercomputer operating system, it managed high-performance computing resources on systems like the Cray-1, Cray X-MP, and Cray Y-MP. By replacing the earlier Cray Time Sharing System (CTSS), NLTSS improved performance and functionality, supporting LLNL's research and development efforts. Its development marked a significant step in the evolution of supercomputing operating systems, contributing to advancements in scientific computing and national security research. NLTSS's legacy reflects LLNL's commitment to pushing the boundaries of high-performance computing.

## Notable For
- **Supercomputer OS Development**: NLTSS was one of the first operating systems designed specifically for supercomputers, paving the way for advanced high-performance computing.
- **LLNL Contribution**: Developed by Lawrence Livermore National Laboratory, NLTSS supported critical research in scientific computing and national security.
- **Platform Support**: NLTSS ran on the Cray-1, Cray X-MP, and Cray Y-MP, which were among the most powerful supercomputers of their time.
- **Replacement of CTSS**: NLTSS succeeded the Cray Time Sharing System (CTSS), improving functionality and performance for supercomputing tasks.
- **Aliases**: Known by multiple names, including Network Livermore Timesharing System (NLTS) and New Livermore Time Sharing System (NLTSS), reflecting its evolution and adaptation.

## Body
### Overview
NLTSS (Network Livermore Timesharing System) is a supercomputer operating system developed by Lawrence Livermore National Laboratory (LLNL) to manage high-performance computing resources. It was designed for use on supercomputers like the Cray-1, Cray X-MP, and Cray Y-MP, replacing the earlier Cray Time Sharing System (CTSS).

### Development and History
- **Developer**: Lawrence Livermore National Laboratory (LLNL), a federal research institute in Livermore, California, United States.
- **Inception**: LLNL was founded on September 2, 1952.
- **Replaced**: NLTSS succeeded the Cray Time Sharing System (CTSS), an earlier operating system for Cray supercomputers.

### Technical Specifications
- **Platforms**: NLTSS was used on the Cray-1, Cray X-MP, and Cray Y-MP supercomputers.
- **Aliases**: Also known as Network Livermore Timesharing System (NLTS) and New Livermore Time Sharing System (NLTSS).

### Classification
- **Instance of**: Operating system and supercomputer operating system.
- **Wikipedia title**: NLTSS (English language only).
- **Wikidata description**: Supercomputer operating system developed by Lawrence Livermore National Laboratory.

### Legacy and Impact
- **Significance**: NLTSS played a crucial role in advancing supercomputing technology at LLNL, supporting critical research in scientific computing and national security.
- **Contribution**: Its development marked a significant step in the evolution of supercomputing operating systems, contributing to advancements in high-performance computing.