Speed enhancement of dynamic BEM on inexpensive hardware with parallel fortran 2008

Stamos, AA

dc.contributor.author	Stamos, AA	en
dc.date.accessioned	2014-03-01T02:53:28Z
dc.date.available	2014-03-01T02:53:28Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36347
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-80054808646&partnerID=40&md5=fbcee90a02f04b175599ca14eae127cd	en
dc.subject	BEM	en
dc.subject	Dynamic steady-state problems	en
dc.subject	Fortran 2008	en
dc.subject	Parallel	en
dc.subject	Transient problems	en
dc.subject.other	BEM	en
dc.subject.other	Computer clusters	en
dc.subject.other	Computer processing power	en
dc.subject.other	Dynamic problem	en
dc.subject.other	Frequency computations	en
dc.subject.other	Low-bandwidth	en
dc.subject.other	Multi core	en
dc.subject.other	Multiprocessor computers	en
dc.subject.other	Parallel	en
dc.subject.other	Physical limits	en
dc.subject.other	Processing power	en
dc.subject.other	Processor speed	en
dc.subject.other	Remote memory	en
dc.subject.other	Special hardware	en
dc.subject.other	Speed enhancement	en
dc.subject.other	Sufficient set	en
dc.subject.other	Transient problems	en
dc.subject.other	Civil engineering	en
dc.subject.other	Computational methods	en
dc.subject.other	Computer hardware	en
dc.subject.other	Earthquakes	en
dc.subject.other	Engineering geology	en
dc.subject.other	FORTRAN (programming language)	en
dc.subject.other	Laplace transforms	en
dc.subject.other	Parallel architectures	en
dc.subject.other	Parallel processing systems	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Boundary element method	en
dc.title	Speed enhancement of dynamic BEM on inexpensive hardware with parallel fortran 2008	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	The Boundary Element Method (BEM) has been extensively used in dynamic problems in structural engineering. The method is computationally intensive and traditionally depends on raw computer processing power to solve larger structures. However, advances on processor speed have stagnated due to physical limits. Instead, processing power is now based on parallel computing. The BEM can benefit from parallel computing, in dynamic problems in the Laplace transform domain, as the computation for each (complex) frequency is independent to each other, and can be executed concurrently by a different core or processor. The volume, in bytes, of the outcome of each frequency computation is small, so that it can be sent through a network with negligible overhead. Thus, the method does not need special hardware and it can be executed equally well by an ordinary, off-the-shelf, multi-core and/or multiprocessor computer, as well as by a typical computer cluster of low bandwidth. The method is implemented using coarrays as described in the upcoming Fortran 2008 standard. The biggest advantage of Fortran 2008 is that remote memory is referred to directly, like an array with the instance identity as index, instead of having to call a subroutine for loading and storing data. A small but sufficient set of easily learned statements and constructs are defined, which make the program much clearer. The method is tested with typical dynamic problems and shows promising results.	en
heal.journalName	ECCOMAS Thematic Conference - COMPDYN 2011: 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering: An IACM Special Interest Conference, Programme	en