# Xiaohan Qin

> Ph.D. University of Washington 1998

**Wikidata**: [Q102251075](https://www.wikidata.org/wiki/Q102251075)  
**Source**: https://4ort.xyz/entity/xiaohan-qin

## Summary
Xiaohan Qin is a computer scientist known for their research in computer engineering and parallel processing architectures. They received their Ph.D. from the University of Washington in 1998, completing a doctoral thesis on communication primitives in cache-coherent cluster architectures. Qin's academic work was conducted under the supervision of the noted computer scientist Jean-Loup Baer.

## Biography
*   **Born:** 1964
*   **Education:**
    *   Ph.D. in Computer Science/Computer Engineering, University of Washington (1998)
    *   Doctorate (point in time: 1997), University of Washington
*   **Known for:** Research on software-controlled cache-coherent cluster architectures.
*   **Field(s):** Computer Science, Computer Engineering
*   **Academic Advisor:** Jean-Loup Baer

## Contributions
Xiaohan Qin's primary documented contribution to the field of computer science is their doctoral research conducted at the University of Washington. Their work culminated in a Ph.D. thesis titled **"On the Use and Performance of Communication Primitives in Software Controlled Cache-coherent Cluster Architectures."**

This research focused on the performance and utility of communication primitives within specific high-performance computing architectures. By investigating software-controlled cache coherence in cluster environments, Qin contributed to the academic understanding of how parallel processing systems manage data consistency and communication efficiency. This work was completed during the late 1990s, a critical period for the development of cluster computing and multiprocessor systems.

## FAQs
### Q: When did Xiaohan Qin receive their Ph.D.?
A: Xiaohan Qin received their Ph.D. from the University of Washington in 1998.

### Q: What was the topic of Xiaohan Qin's doctoral thesis?
A: Their thesis was titled "On the Use and Performance of Communication Primitives in Software Controlled Cache-coherent Cluster Architectures."

### Q: Who was Xiaohan Qin's doctoral advisor?
A: Xiaohan Qin's doctoral advisor was Jean-Loup Baer, a French-American computer scientist.

## Why They Matter
Xiaohan Qin represents a specific era of academic research in computer architecture that laid the groundwork for modern parallel computing. Working under Jean-Loup Baer, a prominent figure in the field, Qin engaged with the complex problems of cache coherence—a fundamental challenge in multi-processor systems.

Their focus on "software controlled" approaches provided important academic data on the trade-offs between hardware and software management of memory hierarchies. This research is part of the broader lineage of computer science lineage documented by the Mathematics Genealogy Project (ID: 71863), preserving the evolution of thought regarding cluster architectures and inter-process communication during the 1990s.

## Notable For
*   **Doctoral Research:** Authored the thesis "On the Use and Performance of Communication Primitives in Software Controlled Cache-coherent Cluster Architectures."
*   **Academic Lineage:** Served as a Ph.D. student to Jean-Loup Baer, a significant figure in computer architecture.
*   **Institutional Affiliation:** Completed advanced graduate studies at the University of Washington.
*   **Data Classification:** Listed as a human instance of "computer scientist" in structured knowledge bases.

## Body
### Educational Background
Xiaohan Qin pursued higher education in the United States, culminating in a doctorate from the University of Washington. According to academic records, the specific point in time for the doctorate was 1997, with the degree widely recognized as completed in 1998. The academic focus of the degree was in computer science and computer engineering.

### Academic Research
Qin's research was centered on the optimization of computer architecture. Their thesis, **"On the Use and Performance of Communication Primitives in Software Controlled Cache-coherent Cluster Architectures,"** investigated how clusters of computers share memory and communicate efficiently. The study of "communication primitives" refers to the basic methods and protocols used to send data between processors, a critical component in the performance of supercomputers and high-performance computing clusters.

### Professional Network
During their academic career, Xiaohan Qin was associated with the **Mathematics Genealogy Project** (ID: 71863), which tracks the academic lineage of mathematicians and computer scientists. Their work was mentored by **Jean-Loup Baer**, a French-American computer scientist recognized for his contributions to the field. This mentorship placed Qin within a specific academic tree focused on the advancement of computer systems and architecture.

## References

1. Mathematics Genealogy Project
2. WorldCat