High Performance Fortran Programming - Detailed Notes by Dr. A C Marshall

Notes

• Introduction
• Introduction
  • The Course
• Fortran Evolution
  • A Brief History of FORTRAN 77
  • Drawbacks of FORTRAN 77
  • New Fortran 90 Features
• Language Obsolescence
• Language Obsolescence
• Language Obsolescence
  • Obsolescent Features
    • Arithmetic IF Statement
    • ASSIGN Statement
    • ASSIGN ed GOTO Statement
    • ASSIGN ed FORMAT Statement
    • Hollerith Format Strings
    • PAUSE Statement
    • REAL and DOUBLE PRECISION DO-loop Variables
    • Shared DO-loop Termination
    • Alternate RETURN
    • Branching to an END IF
  • Undesirable Features
    • Fixed Source Form
    • Implicit Declaration of Variables
    • COMMON Blocks
    • Assumed Size Arrays
    • EQUIVALENCE Statement
    • ENTRY Statement
• Object Oriented Programming
• Object Oriented Programming
  • Fortran 90 's Object Oriented Facilities
    • Data Abstraction
    • Data Hiding
    • Encapsulation
    • Inheritance and Extensibility
    • Polymorphism
    • Reusability
  • Comparisons with C++
• Fortran 90 Programming
  • Example of a Fortran 90 Program
• Language Elements
  • Source Form
  • Free Format Code
  • Character Set
  • Significant Blanks
  • Names
  • Comments
  • Statement Ordering
• Data Objects
  • Intrinsic Types
  • Literal Constants
  • Implicit Typing
  • Numeric and Logical Declarations
  • Character Declarations
  • Constants (Parameters)
  • Initialisation
• Expressions and Assignment
  • Expressions
  • Assignment
  • Intrinsic Numeric Operations
  • Intrinsic Character Operations
    • Character Substrings
    • Concatenation
  • Relational Operators
  • Intrinsic Logical Operations
  • Operator Precedence
  • Precedence Example
• Control Flow
• Control Flow
  • IF Statement
  • IF Construct
  • Nested and Named IF Constructs
  • Conditional Exit Loops
  • Conditional Cycle Loops
  • Named and Nested Loops
  • Indexed DO Loop
    • Examples of Loop Counts
  • Scope of DO Variables
  • SELECT CASE Construct
    • Example Of SELECT CASE Construct
• Simple Input / Output
  • PRINT Statement
  • READ Statement
• Mixing Objects of Different Types
  • Mixed Numeric Type Expressions
  • Mixed Type Assignment
  • Integer Division
• Intrinsic Procedures
• Intrinsic Procedures
  • Type Conversion Functions
  • Mathematical Intrinsic Functions
  • Numeric Intrinsic Functions
• Arrays
  • Array Terminology
  • Declarations
  • Array Element Ordering
  • Array Syntax
  • Whole Array Expressions
  • Array Conformance
  • Array Sections
  • Visualising Array Sections
  • Array Inquiry Intrinsics
  • Array Constructors
  • The RESHAPE Intrinsic Function
  • Array Constructors in Initialisation Statements
  • Allocatable Arrays
  • Deallocating Arrays
  • Printing Arrays
  • Input of Arrays
    • Array I/O Example
  • Masked Assignment - Where Statement
  • Masked Assignment - Where Construct
  • Vector-valued Subscripts
• Selected Intrinsic Functions
  • Random Number Intrinsic
  • Vector and Matrix Multiply Intrinsics
  • Maximum and Minimum Intrinsics
  • Array Location Intrinsics
  • Array Reduction Intrinsics
• Program Units
  • Program Units
  • Procedure Classes
  • Main Program Syntax
    • Main Program Example
  • Procedures
  • Subroutine Syntax
    • Subroutine Example
    • External Subroutine Example
  • Function Syntax
    • Function Example
  • Scope
    • Local Data
    • Host Association
    • Example of Scoping Issues
  • SAVE Statement
  • Implicit SAVE Attribute
  • Procedure Interfaces
    • Interface Example
  • Argument Intent
• Procedures and Array Arguments
• Procedures and Array Arguments
  • Assumed-shape Arrays
  • Automatic Arrays
  • Array-valued Functions
• Modules
  • Modules - General Form
  • Modules - Global Data
    • Module Global Data Example
    • Module Global Data Example
    • Visualisation of Global Storage
  • Modules - Interface Declaration
    • Modules Interface Declaration Example
  • Modules - Procedure Declaration
    • Encapsulation Example
    • Encapsulation - Stack example
  • The USE Renames Facility
  • USE ONLY Statement
• Intrinsics
  • Bit Manipulation Intrinsic Functions
  • Array Construction Intrinsics
    • MERGE Intrinsic
    • SPREAD Intrinsic
    • PACK Intrinsic
    • UNPACK Intrinsic
  • TRANSFER Intrinsic
• Introduction to Parallel Processing
  • Parallel Processing
  • Processor Configurations
  • Parallel Programs
• High Performance Fortran
  • The Concept of HPF
  • SPMD Model
  • Processor Communications
• Data Distribution
  • HPF and Data Parallelism
  • Subset HPF
  • Common Extensions to Subset HPF
  • HPF Directives
    • Declarative Directives
    • Executable Directives
  • PROCESSORS Declaration
  • DISTRIBUTE Directive
  • BLOCK Distribution
  • CYCLIC Distribution
    • 2D Distribution Example
  • Visualisation of * Distribution
  • Commentary
  • Distribution of Allocatables
  • The Owner-Computes Rule
  • Scalar Variables
    • Examples of Good Distributions
    • Successive Over Relaxation Example
  • Other Mappings
  • HPF Programming Issues
  • HPFacts
    • Liverpool HPC Home Page
    • HPFF Home Page
    • HPF Library
    • HPF Book
  • More Distributions
  • Alignment
  • Alignment Syntax
    • Alignment Example
    • Simple 2D Alignment Example
    • Transposed Alignment Example
    • Strided Alignment Example
    • Reverse Strided Alignment Example
    • Practical Example of Alignment
  • Aligning Allocatable Arrays
  • Collapsing Dimensions
  • Replicating Dimensions
    • Example: 2D Gaussian Elimination
  • New HPF System Intrinsics
  • Template Syntax
    • Simple Template Example
  • Combined Directive
    • Another Template Example
    • Further Examples of Template Alignment
  • Aligning to a Template Section
  • Aligning Scalars
  • Explicit Replication Using Templates
• Data Parallel Execution
  • Data Parallel Execution
  • Forall Statement
    • Forall Examples
  • Execution Process
  • Do-loops and Forall Statements
  • Forall Construct
  • Pure Procedures
    • Pure Function Example
    • Pure Subroutine Example
    • MIMD Example
  • The INDEPENDENT Directive
  • Independent DO Loops - Conditions
    • Independent Example 1
    • Independent Example 2
  • INDEPENDENT NEW Loops
    • New Variables Example 1
    • New Variables Example 2
• Input and Output
  • Print and Read
• HPF and Procedures
  • HPF Procedure Interfaces
  • Procedures and Mapping
  • Prescriptive Distribution
  • Descriptive Distribution
    • Examples of Dummy Distributions
  • Consequences
  • Templates and Modules
  • Interfaces
  • Aligning to Dummy Arguments
  • Mapping Function Results
  • Argument Remapping
  • Explicit Intent
  • Passing Array Sections
    • Array Arguments Example 1
    • Array Arguments Example 2
  • Collapsing Dimensions
  • Scalar Arguments
  • Processors Problem
  • Extrinsic Procedures
    • Extrinsic Example
  • Rules for Extrinsic Procedures
  • Uses of Extrinsics
  • Extrinsic instead of INDEPENDENT
    • Calls to the NAG Library
• New HPF Intrinsics
• HPF Library Module
  • Mapping Inquiry Subroutines
    • Example of Mapping Inquiry Procedures
  • New HPF Reduction Functions
    • Example of New Reduction Functions
  • Bit Manipulation Functions
  • Array Combining Scatter Functions
  • Prefix and Suffix Functions
  • Array Sorting Functions
    • Example of Array Sorting Functions
• Storage and Sequence Association
• Dual Fortran 90 and HPF Codes
• Full HPF
• HPF-2
  • HPF Kernel
• References