# XP/S5
**Wikidata**: [Q69815615](https://www.wikidata.org/wiki/Q69815615)  
**Source**: https://4ort.xyz/entity/xp-s5-q69815615

## Summary
XP/S5 was a supercomputer manufactured by Intel with 66 processor cores that ran on the OSF/1 operating system. It achieved a peak performance of 3.3 gigaflops and was ranked #853 in the TOP500 supercomputer listing.

## Key Facts
- XP/S5 was classified as a supercomputer with 66 processor cores
- The system was manufactured by Intel, an American multinational technology company founded in 1968
- XP/S5 utilized OSF/1 as its operating system, a Unix variant developed by the Open Software Foundation
- The supercomputer achieved a peak performance (Rpeak) of 3.3 gigaflops in June 1994
- XP/S5 had a sustained performance (Rmax) of 2.06 gigaflops in June 1994
- The system was listed as entry #853 in the TOP500 supercomputer ranking

## FAQs
### Q: What was XP/S5?
A: XP/S5 was a supercomputer manufactured by Intel with 66 processor cores, running on the OSF/1 operating system. It achieved a peak performance of 3.3 gigaflops in 1994 and was ranked #853 in the TOP500 supercomputer listing.

### Q: When was XP/S5 active and what was its performance?
A: XP/S5 was active in the mid-1990s, with performance measurements recorded in 1994. In June 1994, it achieved a peak performance (Rpeak) of 3.3 gigaflops and a sustained performance (Rmax) of 2.06 gigaflops.

### Q: What operating system did XP/S5 use?
A: XP/S5 ran on OSF/1, a variant of the Unix operating system developed by the Open Software Foundation. This OS is related to Tru64 UNIX, which was first released in 1992.

### Q: Who manufactured XP/S5?
A: XP/S5 was manufactured by Intel, the American multinational technology company founded on July 18, 1968, with headquarters in Santa Clara, California.

## Why It Matters
XP/S5 represents an important milestone in the evolution of commercially available supercomputers during the mid-1990s. As a system with 66 processor cores, it exemplifies the growing trend toward parallel processing architectures that would eventually lead to today's massively parallel computing systems. The selection of OSF/1 as its operating system highlights the significance of Unix-based systems in high-performance computing environments during this period. While not among the most powerful systems of its time, XP/S5's inclusion in the TOP500 ranking demonstrates its role in the broader ecosystem of scientific computing infrastructure, contributing to computational progress in various research fields during a transformative era in computing history.

## Notable For
- Being manufactured by Intel, demonstrating the company's involvement in the complete supercomputer market beyond just supplying processors
- Utilizing OSF/1, a Unix variant that was significant in the evolution of operating systems for high-performance computing
- Achieving 3.3 gigaflops peak performance in 1994, which represented substantial computing capability for commercially available systems of that era
- Having 66 processor cores, showing the growing trend toward parallel processing architectures in supercomputing
- Being included in the TOP500 supercomputer ranking as system #853, acknowledging its place in the global supercomputing ecosystem

## Body
### General Information
XP/S5 was a supercomputer that leveraged parallel processing technology during the mid-1990s. The system exemplifies the computing capabilities available during this period in scientific research and high-performance computing environments.

### Technical Specifications
- Classification: Supercomputer
- Manufacturer: Intel
- Operating System: OSF/1 (Unix variant developed by the Open Software Foundation)
- Top500 System ID: 853
- Processor Cores: 66
- Performance:
  * Rmax (sustained): 2.06 gigaflops (June 1994)
  * Rpeak (maximum): 3.3 gigaflops (June 1994)

### System Context
The OSF/1 operating system used by XP/S5 is related to Tru64 UNIX, an operating system that was first released in 1992. Both systems represent the evolution of Unix-based operating systems designed for high-performance computing environments. Intel's decision to manufacture a complete supercomputer system like XP/S5 indicates their broader engagement in the supercomputing market beyond just supplying processors to other manufacturers.