Study on Communication Overlapping for Parallel CAF Programs

2014 Fiscal Year Final Research Report

• Project/Area Number: 24500068
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Computer system/Network
• Research Institution: Kyushu University
• Principal Investigator: NANRI TAKESHI 九州大学, 学内共同利用施設等, 准教授 (70284578)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 並列計算 / 高性能通信 / オーバーラップ

Outline of Final Research Achievements

Non-blocking collective communication is a key technique for enabling overlap of collective communication and computation to achieve higher scalability on large scale parallel computers. There can be many types of implementation methods for non-blocking collective communications. To sufficiently obtain effect of overlap,
appropriate method should be chosen. Therefore, it is important to study characteristics of each method. This work examined a characteristic of each method of implementation and evaluated the characteristic by performing the experiment using a simple test program. In addition to that, this work proposed an implementation with lower overhead, and evaluates the performance. From the results of these experiments, there have been some investigations to understand how to choose an appropriate method according to the characteristics of the programs.

Free Research Field

並列処理