High Performance Fortran Programming by Dr. A C Marshall

Slides

• Course Philosophy
• Fortran Evolution
• Drawbacks of FORTRAN 77
• Fortran 90 New features
• Language Obsolescence
• Obsolescent Features
• Undesirable Features
• Object Oriented Facilities
• Example
• Source Form
• Character Set
• Significance of Blanks
• Names
• Comments
• Statement Ordering
• Intrinsic Types
• Literal Constants
• Implicit Typing
• Numeric and Logical Declarations
• Character Declarations
• Constants (Parameters)
• Initialisation
• Expressions
• Assignment
• Intrinsic Numeric Operations
• Intrinsic Character Operations - Substrings
• Intrinsic Character Operations - Concatenation
• Relational Operators
• Intrinsic Logical Operations
• Operator Precedence
• Precedence Example
• Control Flow
• IF Statement
• IF Construct
• Nested and Named IF Constructs
• Conditional Exit Loops
• Conditional Cycle Loops
• Named and Nested Loops
• Indexed DO Loops
• Examples of Loop Counts
• Scope of DO Variables
• SELECT CASE Construct
• Example Of SELECT CASE Construct
• PRINT Statement
• PRINT Statement
• READ Statement
• Mixed Type Numeric Expressions
• Mixed Type Assignment
• Integer Division
• Intrinsic Procedures
• Type Conversion Functions
• Mathematical Intrinsic Functions
• Numeric Intrinsic Functions
• Array Terminology
• Visualisation of Arrays
• Declarations
• Array Element Ordering
• Array Syntax
• Whole Array Expressions
• Array Conformance
• Array Sections
• Array Sections - Visualisation
• Array Inquiry Intrinsics
• Array Constructors
• The RESHAPE Intrinsic Function
• Array Constructors in Initialisation Statements
• Allocatable Arrays
• Deallocating Arrays
• Array I/O
• Array I/O Example
• Masked Array Assignment - Where Statement
• Where Construct
• Vector-valued Subscripts
• Random Number Intrinsic
• Vector and Matrix Multiply Intrinsics
• Maximum and Minimum Intrinsics
• Array Location Intrinsics
• Array Reduction Intrinsics
• Array Reduction Intrinsics (Cont'd)
• Program Units
• Procedure Classes
• Main Program Syntax
• Program Example
• Introduction to Procedures
• Subroutine Syntax
• Subroutine Example
• External Subroutine Example
• Function Syntax
• External Function Example
• Scoping Rules
• Host Association
• Scope of Names
• SAVE Statement
• Implicit SAVE Attribute and the SAVE Statement
• Procedure Interfaces
• What Appears in an Interface?
• Interface Example
• Argument Intent
• Dummy Array Arguments
• Assumed-shape Arrays
• Automatic Arrays
• Array-valued Functions
• Modules - An Overview
• General Form
• Modules - Global Data
• Stack Simulation
• Implementation of a Stack
• Module Global Data Example
• Visualisation of Global Storage
• Modules - Interface Declaration
• Modules Interface Declaration Example
• Modules - Procedure Declaration
• Modules - Procedure Encapsulation
• Encapsulation - Stack example
• The USE Renames Facility
• USE ONLY Statement
• Bit Manipulation Intrinsic Functions
• Array Construction Intrinsics
• MERGE Intrinsic
• SPREAD Intrinsic
• PACK Intrinsic
• UNPACK Intrinsic
• TRANSFER Intrinsic
• Parallel Processing
• Processor Configurations
• Parallel Programs
• The Concept of HPF
• SPMD Model
• Processor Communications
• HPF and Data Parallelism
• Subset HPF
• Subset HPF
• Common Extensions
• HPF 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
• HPF Programming Issues II
• HPFacts
• More Distributions
• 2D Example
• Alignment
• Alignment Syntax
• Example and Visualisation
• Simple 2D Alignment Example
• Visualisation of Simple Alignment Example
• Transposed Alignment Example
• Visualisation of Transposed Alignment Example
• Strided Alignment Example
• Reverse Strided Alignment Example
• Practical Example of Alignment
• Aligning Allocatable Arrays
• Example
• Other Pitfalls
• Collapsing Dimensions
• Replicating Dimensions
• Gaussian Elimination - 2D Grid
• Visualisation of 2D Gaussian Elimination
• New HPF Intrinsics
• Template Syntax
• Simple Template Example
• Alternative Template Syntax
• Another Template Example
• Visualisation
• Alignment and Distribution of Templates
• Aligning to a Template Section
• Aligning Scalars
• Explicit Replication Using Templates
• Data Parallel Execution
• Forall Statement
• Forall Examples
• Execution Process
• Do-loops and Forall Statements
• Forall Construct
• Pure Procedures
• Pure Procedures
• Pure Function Example
• Pure Subroutine Example
• MIMD Example
• The INDEPENDENT Directive
• Independent Loops - Conditions
• Independent Example 1
• Visualisation of Independent Loop
• Independent Example 2
• INDEPENDENT NEW Loops
• New Variables - Conditions
• New Variables Example 1
• Visualisation of New Variables Example 1
• New Variables Example 2
• Input and Output
• HPF Procedure Interfaces
• Mapping and Procedures
• Prescriptive Distribution
• Descriptive Distribution
• Examples of Dummy Distributions
• Consequences
• Templates and Modules
• Problems with 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
• A Possible Solution
• The Next Problem
• Extrinsic Procedures
• Extrinsic Procedure Example
• Extrinsic Example Continued
• Extrinsic Example Continued
• Extrinsic Example Continued
• Rules for Extrinsic Procedures
• Uses of Extrinsics
• Extrinsic instead of INDEPENDENT
• Calls to the NAG Library
• New Intrinsics in HPF
• 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
• Array Combining Scatter Functions II
• Prefix and Suffix Functions
• Prefix and Suffix Functions II
• Prefix and Suffix Functions III
• SEGMENT and EXCLUSIVE
• Array Sorting Functions
• Example of Array Sorting Functions
• Further Example of Array Sorting Functions
• Storage and Sequence Association
• Dual Fortran 90 and HPF Codes
• Full HPF
• HPF 2
• HPF Kernel