parallel_scientific_computing_in_c _and_mpi.pdf

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1、ParallelScientificComputinginC++andMPIAseamlessapproachtoparallelalgorithmsandtheirimplementationGeorgeEmKarniadakisandRobertM.KirbyIICambridgeUniversityPressPrefaceScientificcomputingisbyitsverynatureapracticalsubject-itrequirestoolsandalotofpractice.Tosolverealisti

2、cproblemsweneednotonlyfastalgorithmsbutalsoacombinationofgoodtoolsandfastcomputers.Thisisthesubjectofthecurrentbook,whichemphasizesequallyallthree:algorithms,tools,andcomputers.Oftentimessuchconceptsandtoolsaretaughtseriallyacrossdifferentcoursesanddifferenttextbooks

3、,andhencetheinterconnectionbetweenthemisnotimmediatelyapparent.Webelievethatsuchacloseintegrationisimportantfromtheoutset.ThebookstartswithaheavydosageofC++andbasicmathematicalandcomputationalconcepts,anditendsemphasizingadvancedparallelalgorithmsthatareusedinmoder

4、nsimulations.Wehavetriedtomakethisbookfuntoread,tosomewhatdemystifythesubject,andthusthestyleissometimesinformalandpersonal.Itmayseemthatthishappensattheexpenseofrigor,andindeedwehavetriedtolimitnotationandtheoremproofing.Instead,weemphasizeconceptsandusefultricks-o

5、f-the-tradewithmanycodesegments,remarks,reminders,andwarningsthroughoutthebook.Thematerialofthisbookhasbeentaughtatdifferenttimestostudentsinengineering,physics,computerscience,andappliedmathematicsatPrincetonUniversity,BrownUniver-sity,andMIToverthelast15years.Diffe

6、rentsegmentshavebeentaughttoundergraduatesandgraduates,tonovicesaswellastoexperts.Tothisend,onallthreesubjectscovered,westartwithsimpleintroductoryconceptsandproceedtomoreadvancedtopics-bandwidth,webelieve,isonestrengthofthisbook.Wehavebeeninvolvedinlarge-scalepara

7、llelcomputingformanyyearsfrombenchmark-ingnewsystemstosolvingcomplexengineeringproblemsincomputationalmechanics.Werepresenttwodifferentgenerationsofcomputationalscienceandsupercomputing,andourexpertisearebothoverlappingandcomplementary.Thematerialweselectedtoinclude

8、inthisbookisbasedonourexperiencesandneedsascomputationalscientistsforhigh-orderaccuracy,modularcode,anddomaindecomposition.Thesearenecessaryingre