By John M. Levesque
Contents: advent; Supercomputer structure; Fortran; Vectorization of Fortran courses. Index. This e-book explains intimately either the underlying structure of modern-day supercomputers and the way in which a compiler maps Fortran code onto that structure. most crucial, the constructs combating complete optimizations are defined, and particular suggestions for restructuring a software are supplied
Read or Download A Guidebook to Fortran on Supercomputers PDF
Similar software books
Computeractive is the UK’s best-selling laptop journal and your pleasant consultant to computers, devices and the net! It contains normal information updates, undertaking rules, support and suggestion on well known reader queries, articles on anti-virus software program, positive factors on patron rights, and a complete lot extra that can assist you get some of the best from your laptop.
Have you needed to fill out and signal a PDF-based shape? Or swap the date on a PDF-based flyer? touch upon a rfile despatched round your place of work as a PDF dossier? experiment a rfile to PDF and OCR the textual content? Smile's PDFpen five can practice those and lots of different PDF manipulations extra simply than Adobe Acrobat, and at a fragment of the associated fee.
Professor Dr. Mladen Victor Wickerhauser lehrt an der collage in St. Louis, Missouri, united states.
Unified Modeling Language (UML) hat sich in kurzer Zeit zur Standard-Notation f r objektorientierte Modelle entwickelt. Unter durchgehender Verwendung der UML werden wesentliche Bestandteile objektorientierter Software-Entwicklung dargestellt. Teil I gibt einen berblick ber objektorientierte Prinzipien, die UML und bew hrte Prinzipien des Software-Engineerings.
- Software Engineering — ESEC/FSE ’99: 7th European Software Engineering Conference Held Jointly with the 7th ACM SIGSOFT Symposium on the Foundations of Software Engineering Toulouse, France, September 6–10, 1999 Proceedings
- DigiScript™: Edits Digital Manuscripts
- Software for Computer Control. Proceedings of the Second IFAC/IFIP Symposium on Software for Computer Control, Prague, Czechoslovakia, 11–15 June 1979
- MultiBody System SIMulation: Numerical Methods, Algorithms, and Software
- Large-Scale Kernel Machines
Additional resources for A Guidebook to Fortran on Supercomputers
On the CYBER 205, a vector operation under control of a bit vector is as 50 SUPERCOMPUTER ARCHITECTURE fast as the operation without bit vector control. Consider the following DO Loop: INTEGER S 10 DO 10 I = 1, 10000, S A(I) = B(I) + C(I) CONTINUE The two methods of vectorizing this loop on the CYBER 205 are 1) periodically gather arrays B and C into temporary memory vectors TB and TC, add TB to TC, and store into temporary memory vector TA; then periodically scatter TA into A; or 2) add B to C over the entire index range 1 to 10000, using a bit vector that will only store into every Sth element of A.
8 39 4- N / . 8 Compress Vector A (Z # of element compressed) 52 + Z/2 52 + Z/4 52 + Z/4 52 + Z/8 Expand Vector A (Z # of elements expanded) 58 + Z/2 58 + Z/4 58 + Z/4 58 + Z/8 Sum of Elements 116+ N 116 + N 116-hN 116 + N Dot Product 116+ N 116 + N 116+ N 116+ N a Vector length = N. Format is startup time + result rate. Table derived from Clifford N. Arnold, "Vector Optimization on the CYBER 205," Control Data Corporation, Arden Hills, MN. shortening the vector seen by each pipeline, but the startup time remains constant.
Fetch the next 64 elements of Y to a vector register (V4). • Generate register V5 by choosing elements from V3 where the corre sponding bit of VM is 1 and by choosing elements from V4 where the bits are zero. • Store V5 into the 64 elements of the array Y. Or to state it more simply, perform all the computation in vector mode for all elements, then store only those elements for which the condition is true. GE. 0 true for all odd values of I. Although all computation of all elements is performed, vector-mask computation is so fast that it will outperform scalar mode any time that the condition is true a significant percentage of the time.
A Guidebook to Fortran on Supercomputers by John M. Levesque