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DoD HPF Training -- 4. HPF Data Mapping Facilities

Given by Chuck Koelbel -- Rice University at DoD Training and Others on 1995-98. Foils prepared August 7 98

Fourth in HPF Tutorial Sequence of Chuck Koelbel
Discussion of Data Mapping in HPF using Multigrid as an exampleobullet1:DISTRIBUTE ALIGN DYNAMIC REALIGN REDISTRIBUTE
Subroutine Interfaces

Table of Contents for DoD HPF Training -- 4. HPF Data Mapping Facilities

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1 "High Performance Fortran in Practice" tutorial 4. HPF Data Mapping Features
Presented at SIAM Parallel Processing San Francisco, Feb. 14, 1995
Presented at Supercomputer '95, Mannheim, Germany, June 27, 1995
Presented at Supercomputing '95, San Diego, December 4, 1995
Presented at University of Tennessee (short form), Knoxville, March 21, 1996
Presented at Metacenter Regional Alliances, Cornell, May 6, 1996
Presented at Summer of HPF Workshop, Vienna, July 1, 1996
Presented at Institute for Mathematics & its Applications, Minneapolis, September 11-13, 1996
Presented at Corps of Engineers Waterways Experiments Station, Vicksburg, MS, October 30-November 1, 1996
Presented at Supercomputing '96, Pittsburgh, PA, November 17, 1996
Presented at NAVO, Stennis Space Center, MS, Feb 13, 1997
Presented at HPF Users Group (short version), Santa Fe, NM, February 23, 1997
Presented at ASC, Wright-Patterson Air Force Base, OH, March 5, 1997
Parts presented at SC'97, November 17, 1997
Parts presented (slideshow mode) at SC'97, November 15-21, 1997
Presented at DOD HPC Users Group, June 1, 1998
2 Outline
3 Data Mapping
4 Data Mapping, cont.
5 A. distribute directive
The DISTRIBUTE Directive
6 Examples of DISTRIBUTE
7 More Examples of DISTRIBUTE
8 Why Use DISTRIBUTE?
9 DISTRIBUTE and Communication
10 Choosing a Good Distribution Pattern
11 Choosing a Good Distribution Pattern (cont.)
12 Choosing a Good Distribution Pattern (cont.)
13 Distribution Patterns and
Load Balance
14 Rules of Thumb for Communication
15 Typical Uses of DISTRIBUTE
16 Multigrid: A Complicated
Case for DISTRIBUTE
17 Possible Data Structures for Multigrid
18 Possible DISTRIBUTE Patterns
for Multigrid
19 Possible DISTRIBUTE Patterns
for Multigrid (cont.)
20 Implementation of DISTRIBUTE
21 B. align directive
The ALIGN Directive
22 Examples of ALIGN
23 More Examples of ALIGN
24 Even More Examples of ALIGN
25 Son of Even More Examples of ALIGN
26 ALIGN and Communication
27 Why Use ALIGN?
28 Implementation of ALIGN
29 C. dynamic mapping
Dynamic Data Mapping
30 The DYNAMIC Directive
31 The REALIGN Directive
32 The REDISTRIBUTE Directive
33 Typical Use of Dynamic Data Mapping
34 More Typical Uses of Dynamic Data Mapping
35 D. Subroutine linkage
Data Mapping in Subroutine Calls
36 Mapping Options for Dummy Arguments
37 Subroutine Interfaces for Dummies
38 When Are Two Mappings the Same?
39 Specialized and Generalized Mappings
40 Explicit Interfaces for
Mapping Dummy Arguments
41 Rules of Thumb for Dummy Arguments
42 Other Mapping Features
43 Hints for Using Data Mapping
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