Generalized asynchronous iterations

1986 ◽  
pp. 272-278 ◽  
Author(s):  
Aydin Uresin ◽  
Michel Dubois
Keyword(s):  
Asynchronous Iterations

scholarly journals Asynchronous Parallelization of a CFD Solver

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Daniel S. Abdi ◽  
Girma T. Bitsuamlak
Keyword(s):  
Message Passing ◽  
Message Passing Interface ◽  
Stokes Equations ◽  
Domain Decomposition Method ◽  
Asynchronous Communication ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Asynchronous Iterations ◽  
Alternative Approach ◽  
Asynchronous Methods

A Navier-Stokes equations solver is parallelized to run on a cluster of computers using the domain decomposition method. Two approaches of communication and computation are investigated, namely, synchronous and asynchronous methods. Asynchronous communication between subdomains is not commonly used in CFD codes; however, it has a potential to alleviate scaling bottlenecks incurred due to processors having to wait for each other at designated synchronization points. A common way to avoid this idle time is to overlap asynchronous communication with computation. For this to work, however, there must be something useful and independent a processor can do while waiting for messages to arrive. We investigate an alternative approach of computation, namely, conducting asynchronous iterations to improve local subdomain solution while communication is in progress. An in-house CFD code is parallelized using message passing interface (MPI), and scalability tests are conducted that suggest asynchronous iterations are a viable way of parallelizing CFD code.

Convergence of discrete asynchronous iterations

2000 ◽  
Vol 74 (1) ◽  
pp. 113-125 ◽  
Author(s):  
Jacques M. Bahi ◽  
Christian J. Michel
Keyword(s):  
Asynchronous Iterations

scholarly journals Asynchronous iterations with flexible communication: contracting operators

2005 ◽  
Vol 176 (1) ◽  
pp. 91-103 ◽  
Author(s):  
Didier El Baz ◽  
Andreas Frommer ◽  
Pierre Spiteri
Keyword(s):  
Asynchronous Iterations
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