# XP/S4
**Wikidata**: [Q69823501](https://www.wikidata.org/wiki/Q69823501)  
**Source**: https://4ort.xyz/entity/xp-s4-q69823501

## Summary
XP/S4 is a supercomputer developed by Intel, running on the OSF/1 operating system. It achieved a peak performance of 2.8 gigaflops and a sustained performance of 1.75 gigaflops in 1994, featuring 56 processor cores and ranking in the TOP500 list.

## Key Facts
- **Instance of**: Supercomputer
- **Manufacturer**: Intel (founded 1968-07-18, United States)
- **Operating System**: OSF/1 (variant of Unix)
- **TOP500 System ID**: 880
- **Peak Performance**: 2.8 gigaflops (Rpeak, 1994-11-01)
- **Sustained Performance**: 1.75 gigaflops (Rmax, 1994-11-01)
- **Processor Cores**: 56
- **Inception**: 1994 (performance metrics recorded)
- **Country of Origin**: United States (Intel headquarters in Santa Clara, CA)

## FAQs
### Q: What company manufactured XP/S4?
A: XP/S4 was manufactured by Intel, an American multinational technology company founded in 1968.

### Q: What operating system did XP/S4 use?
A: XP/S4 ran on OSF/1, a variant of the Unix operating system developed by the Open Software Foundation.

### Q: What were XP/S4's performance metrics?
A: In 1994, XP/S4 achieved a peak performance of 2.8 gigaflops (Rpeak) and a sustained performance of 1.75 gigaflops (Rmax).

### Q: How many processor cores did XP/S4 have?
A: XP/S4 featured 56 processor cores.

### Q: Where was Intel headquartered when XP/S4 was developed?
A: Intel was headquartered in Santa Clara, California, at the time of XP/S4's development.

## Why It Matters
XP/S4 was a significant supercomputer in the late 1990s, contributing to the evolution of high-performance computing. Its performance metrics, including a peak of 2.8 gigaflops and sustained 1.75 gigaflops, reflected the capabilities of Intel's hardware and OSF/1's operating system. As a supercomputer, XP/S4 played a role in advancing computational power, supporting scientific and engineering applications. Its inclusion in the TOP500 list underscores its importance in the field of supercomputing, where performance and efficiency are critical. While not as powerful as modern supercomputers, XP/S4 represents an early milestone in Intel's contributions to high-performance computing.

## Notable For
- **TOP500 Ranking**: Achieved a system ID of 880, indicating its position in the global supercomputing landscape.
- **Performance Metrics**: Set performance benchmarks with 2.8 gigaflops (Rpeak) and 1.75 gigaflops (Rmax) in 1994.
- **Processor Architecture**: Featured 56 processor cores, showcasing Intel's early multi-core capabilities.
- **Operating System**: Ran on OSF/1, a Unix variant, demonstrating compatibility with advanced computing environments.
- **Manufacturer**: Developed by Intel, a leader in semiconductor technology, highlighting the company's role in supercomputing innovation.

## Body
### Overview
XP/S4 is a supercomputer manufactured by Intel, known for its performance in the late 1990s. It operated on the OSF/1 operating system, a variant of Unix, and was part of the TOP500 list with a system ID of 880.

### Performance
XP/S4 achieved a peak performance of 2.8 gigaflops (Rpeak) and sustained 1.75 gigaflops (Rmax) in 1994. These metrics were recorded in both June and November of that year, reflecting its computational power.

### Hardware
The supercomputer featured 56 processor cores, demonstrating Intel's early advancements in multi-core architecture. Its hardware capabilities were supported by the OSF/1 operating system, ensuring efficient execution of high-performance tasks.

### Manufacturer
Intel, founded in 1968, is a multinational technology company headquartered in Santa Clara, California. With a history in semiconductor manufacturing, Intel played a pivotal role in developing XP/S4.

### Context
XP/S4's performance metrics and inclusion in the TOP500 list highlight its significance in the field of supercomputing. While not as powerful as modern supercomputers, it represents an important milestone in Intel's contributions to high-performance computing.