# XP/S5
**Wikidata**: [Q69982232](https://www.wikidata.org/wiki/Q69982232)  
**Source**: https://4ort.xyz/entity/xp-s5-q69982232

## Summary
XP/S5 is a supercomputer manufactured by Intel that runs on the OSF/1 operating system. It featured 66 processor cores and achieved performance ratings of up to 3.3 gigaflops in 1994-1995.

## Key Facts
- XP/S5 is classified as a supercomputer with a Top500 system ID of 1220
- Manufactured by Intel, the American multinational technology company founded in 1968
- Runs on OSF/1, a variant of the Unix operating system developed by the Open Software Foundation
- Also associated with Tru64 UNIX operating system
- Had 66 processor cores
- Achieved a peak performance of 3.3 gigaflops (Rpeak) in November 1994 and June 1995
- Sustained a maximum performance of 2.06 gigaflops (Rmax) in November 1994 and June 1995

## FAQs
### Q: What was the primary purpose of XP/S5?
A: XP/S5 was designed as a supercomputer to handle high-performance computing tasks during the mid-1990s, when such systems were critical for scientific research, engineering simulations, and large-scale data processing.

### Q: How does XP/S5's performance compare to modern computers?
A: With its maximum performance of 3.3 gigaflops, XP/S5 would be considered extremely slow by today's standards, as even smartphones now regularly achieve teraflop-level performance, representing a performance improvement of approximately three orders of magnitude.

### Q: What operating systems did XP/S5 use?
A: XP/S5 primarily ran on OSF/1, a Unix variant developed by the Open Software Foundation, and was also associated with Tru64 UNIX, which was based on the same technology.

## Why It Matters
XP/S5 represents an important milestone in the evolution of supercomputing during the mid-1990s, a period when computational power was rapidly expanding for scientific research and industrial applications. As one of the systems recognized in the TOP500 list (system ID 1220), it contributed to the benchmarks and standards that shaped the supercomputing industry. Its Intel architecture and OSF/1 operating system showcase the technological choices of that era, helping researchers understand the development trajectory of high-performance computing. While its performance of 3.3 gigaflops seems modest by today's standards, it played a role in advancing computational capabilities that eventually enabled breakthroughs across various scientific disciplines.

## Notable For
- Being recognized in the TOP500 supercomputer rankings with system ID 1220 during the mid-1990s
- Its use of OSF/1 operating system, a Unix variant from the Open Software Foundation
- Achieving a peak performance of 3.3 gigaflops in 1994-1995, representing significant computational power for its time
- Having 66 processor cores, which was a notable configuration for supercomputers of that era
- Its association with Intel as the manufacturer, highlighting the company's involvement in supercomputing beyond consumer processors

## Body
### Technical Specifications
- Instance of: Supercomputer
- Manufacturer: Intel
- Top500 System ID: 1220
- Number of processor cores: 66
- Operating system: OSF/1 (primary), Tru64 UNIX (associated)

### Performance Metrics
- Rmax (sustained performance): 2.06 gigaflops (November 1994 and June 1995)
- Rpeak (theoretical maximum performance): 3.3 gigaflops (November 1994 and June 1995)
- Performance measured using industry-standard benchmarks for the mid-1990s

### Operating System Details
- Primary OS: OSF/1, a variant of the Unix operating system developed by the Open Software Foundation
- Associated OS: Tru64 UNIX, an operating system that was introduced in 1992
- Both operating systems were variants of Unix, which was the standard for high-performance computing during this period

### Manufacturer Information
- Built by Intel, the American multinational technology company
- Intel was founded on July 18, 1968
- Intel headquarters is located in Santa Clara, California
- The company has been a major player in the semiconductor industry since its inception