# XP/S15
**Wikidata**: [Q69820035](https://www.wikidata.org/wiki/Q69820035)  
**Source**: https://4ort.xyz/entity/xp-s15-q69820035

## Summary
XP/S15 is a supercomputer manufactured by Intel that ran on the OSF/1 operating system. It achieved performance ratings of up to 10.4 gigaflops and featured 208 processor cores, earning it a place on the TOP500 list of supercomputers with system ID 871.

## Key Facts
- XP/S15 is classified as a supercomputer with Top500 system ID 871
- It was manufactured by Intel, an American multinational technology company founded in 1968
- The system operated on OSF/1, a variant of Unix developed by the Open Software Foundation
- XP/S15 achieved maximum performance (Rpeak) of 10.4 gigaflops between 1994 and 1996
- It sustained performance (Rmax) of 6.25 gigaflops across multiple measurement periods
- The supercomputer was equipped with 208 processor cores
- The system was also associated with Tru64 UNIX, which was introduced in 1992 in the United States

## FAQs
### Q: What company manufactured the XP/S15 supercomputer?
A: The XP/S15 supercomputer was manufactured by Intel, an American multinational technology company headquartered in Santa Clara, California.

### Q: What operating system did the XP/S15 use?
A: The XP/S15 ran on OSF/1, a variant of the Unix operating system developed by the Open Software Foundation. It was also associated with Tru64 UNIX, which was introduced in 1992.

### Q: What was the computing performance of the XP/S15?
A: The XP/S15 achieved a peak performance (Rpeak) of 10.4 gigaflops and sustained performance (Rmax) of 6.25 gigaflops, with consistent metrics reported between 1994 and 1996.

## Why It Matters
The XP/S15 represents an important milestone in the development of supercomputing technology during the mid-1990s. As one of the systems included in the TOP500 list (system ID 871), it contributed to the benchmarking and advancement of high-performance computing during this period. The system's use of Intel processors and OSF/1 operating system demonstrates the convergence of hardware and software technologies in scientific computing. Its consistent performance metrics over multiple measurement periods indicate reliability in computational tasks, which was crucial for research institutions and organizations requiring stable computing power for complex calculations and simulations during this era of rapid technological advancement.

## Notable For
- Being ranked among the TOP500 supercomputers with system ID 871
- Maintaining consistent performance metrics over multiple measurement periods from 1994 to 1996
- Utilizing OSF/1, an early variant of Unix specifically designed for high-performance computing environments
- Featuring 208 processor cores, representing significant parallel processing capability for its time
- Being manufactured by Intel, demonstrating the company's early entry into the supercomputing market

## Body
### Overview
XP/S15 is a supercomputer that achieved recognition in the TOP500 ranking of high-performance systems. The system was identified by system ID 871, placing it among the most powerful computing systems of its time.

### Technical Specifications
- Processor Configuration: 208 processor cores
- Operating System: OSF/1 (a Unix variant developed by the Open Software Foundation)
- Alternative OS: Tru64 UNIX (introduced in 1992, developed in the United States)
- Manufacturer: Intel Corporation

### Performance Metrics
The XP/S15 demonstrated consistent performance capabilities over multiple measurement periods:

- November 1994:
  - Rmax (sustained performance): 6.25 gigaflops
  - Rpeak (theoretical peak performance): 10.4 gigaflops

- June 1995:
  - Rmax: 6.25 gigaflops
  - Rpeak: 10.4 gigaflops

- December 1995:
  - Rmax: 6.25 gigaflops
  - Rpeak: 10.4 gigaflops

- June 1996:
  - Rmax: 6.25 gigaflops
  - Rpeak: 10.4 gigaflops

- November 1996:
  - Rmax: 6.25 gigaflops
  - Rpeak: 10.4 gigaflops

### Manufacturer Background
The XP/S15 was manufactured by Intel, an American multinational technology company founded on July 18, 1968. Intel is headquartered in Santa Clara, California, and operates primarily in the semiconductor and electrical industries.