scholarly journals Enabling highly scalable remote memory access programming with MPI-3 one sided

2018 ◽  
Vol 61 (10) ◽  
pp. 106-113 ◽  
Author(s):  
Robert Gerstenberger ◽  
Maciej Besta ◽  
Torsten Hoefler
Keyword(s):  
Memory Access ◽  
Remote Memory ◽  
Remote Memory Access

scholarly journals Remote Memory Access: A Case for Portable, Efficient and Library Independent Parallel Programming

2004 ◽  
Vol 12 (3) ◽  
pp. 169-183 ◽  
Author(s):  
Alexandros V. Gerbessiotis ◽  
Seung-Yeop Lee
Keyword(s):  
Message Passing ◽  
Matrix Multiplication ◽  
Memory Access ◽  
Parallel Computer ◽  
Remote Memory ◽  
Dense Matrix ◽  
Radix Sort ◽  
Matrix Multiplication Algorithm ◽  
Bulk Synchronous Parallel ◽  
Remote Memory Access

In this work we make a strong case for remote memory access (RMA) as the effective way to program a parallel computer by proposing a framework that supports RMA in a library independent, simple and intuitive way. If one uses our approach the parallel code one writes will run transparently under MPI-2 enabled libraries but also bulk-synchronous parallel libraries. The advantage of using RMA is code simplicity, reduced programming complexity, and increased efficiency. We support the latter claims by implementing under this framework a collection of benchmark programs consisting of a communication and synchronization performance assessment program, a dense matrix multiplication algorithm, and two variants of a parallel radix-sort algorithm and examine their performance on a LINUX-based PC cluster under three different RMA enabled libraries: LAM MPI, BSPlib, and PUB. We conclude that implementations of such parallel algorithms using RMA communication primitives lead to code that is as efficient as the message-passing equivalent code and in the case of radix-sort substantially more efficient. In addition our work can be used as a comparative study of the relevant capabilities of the three libraries.

VM-based shared memory on low-latency, remote-memory-access networks

1997 ◽  
Vol 25 (2) ◽  
pp. 157-169 ◽  
Author(s):  
Leonidas Kontothanassis ◽  
Galen Hunt ◽  
Robert Stets ◽  
Nikolaos Hardavellas ◽  
Michał Cierniak ◽  
...  
Keyword(s):  
Shared Memory ◽  
Access Networks ◽  
Memory Access ◽  
Remote Memory ◽  
Low Latency ◽  
Remote Memory Access
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