| Chapter 6 |
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6
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Using Parallel Compiler Directives
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6.1
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OpenMP Fortran API Compiler Directives
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6.1.1
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Compiler Command Line Option
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6.1.2
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Format for OpenMP Fortran API Directives
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6.1.2.1
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Directive Prefixes
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6.1.2.2
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Conditional Compilation Prefixes
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6.1.3
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Directive Summary Descriptions
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6.1.4
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The Parallel Processing Thread Model
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6.1.5
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Controlling the Data Environment
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6.1.5.1
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Privitizing Named Common Blocks
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6.1.5.2
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Controlling Data Scope Attributes
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6.1.6
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Parallel Region Construct
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6.1.7
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Worksharing Constructs
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6.1.7.1
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DO and END DO directives
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6.1.7.2
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SECTIONS, SECTION, and END SECTIONS Directives
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6.1.7.3
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SINGLE and END SINGLE Directives
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6.1.8
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Combined Parallel/Worksharing Constructs
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6.1.8.1
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PARALLEL DO and END PARALLEL DO Directives
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6.1.8.2
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PARALLEL SECTIONS and END PARALLEL SECTIONS Directives
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6.1.9
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Synchronization Constructs
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6.1.9.1
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ATOMIC Directive
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6.1.9.2
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BARRIER Directive
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6.1.9.3
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CRITICAL Directive
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6.1.9.4
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FLUSH Directive
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6.1.9.5
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MASTER Directive
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6.1.9.6
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ORDERED Directive
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6.2
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DIGITAL Fortran Parallel Compiler Directives
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6.2.1
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Compiler Command Line Option
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6.2.2
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Format for DIGITAL Fortran Parallel Directives
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6.2.2.1
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Directive Prefixes
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6.2.3
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Directive Summary Descriptions
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6.2.4
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The Parallel Processing Thread Model
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6.2.5
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Controlling the Data Environment
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6.2.5.1
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Privitizing Named Common Blocks
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6.2.5.2
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Controlling Data Scope Attributes
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6.2.6
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Parallel Region Construct
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6.2.7
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Worksharing Constructs
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6.2.7.1
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PDO and END PDO Directives
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6.2.7.2
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PSECTIONS, SECTION, and END PSECTIONS Directives
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6.2.7.3
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SINGLE PROCESS and END SINGLE PROCESS Directives
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6.2.8
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Combined Parallel/Worksharing Constructs
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6.2.8.1
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PARALLEL DO and END PARALLEL DO Directives
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6.2.8.2
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PARALLEL SECTIONS and END PARALLEL SECTIONS Directives
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6.2.9
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Synchronization Constructs
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6.2.9.1
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BARRIER Directive
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6.2.9.2
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CRITICAL SECTION and END CRITICAL SECTION Directives
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6.2.10
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Specifying a Default Chunk Size
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6.2.11
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Specifying a Default Schedule Type
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6.3
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Decomposing Loops for Parallel Processing
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6.3.1
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Directed Decomposition
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6.3.1.1
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Resolving Dependences Manually
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6.3.1.2
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Coding Restrictions
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6.3.1.3
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Manual Optimization
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6.3.1.4
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Adjusting the Run-Time Environment
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6.4
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Calls to Programs Written in Other Languages
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6.5
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Compiling, Linking, and Running Parallelized Programs
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6.6
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Debugging Parallelized Programs
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6.6.1
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Parallel Regions
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6.6.2
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Shared Variables
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| Chapter 7 |
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7
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DIGITAL Fortran 90 Input/Output (I/O)
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7.1
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Logical I/O Units
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7.2
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Types of I/O Statements
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7.3
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Forms of I/O Statements
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7.4
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Types of Files and File Characteristics
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7.4.1
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File Organizations
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7.4.2
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Internal Files and Scratch Files
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7.4.3
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Record Types, Record Overhead, and Maximum Record Length
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7.4.3.1
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Portability Considerations of Record Types
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7.4.3.2
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Record Overhead
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7.4.3.3
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Maximum Record Length
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7.4.4
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Other File Characteristics
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7.5
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File Operations: OPEN, INQUIRE, CLOSE Statements
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7.5.1
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Opening Files: The OPEN Statement
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7.5.1.1
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Using Preconnected Standard I/O Files
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7.5.1.2
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OPEN Statement Specifiers
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7.5.1.3
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Methods to Specify the Unit, File Name, and Directory
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7.5.1.4
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Accessing Files: Implied and Explicit File and Pathnames
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7.5.1.5
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How DIGITAL Fortran 90 Applies a Default Pathname and File Name
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7.5.1.6
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Coding File Locations in an OPEN Statement
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7.5.1.7
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Using Environment Variables
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7.5.2
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Obtaining File Information: The INQUIRE Statement
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7.5.2.1
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Inquiry by Unit
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7.5.2.2
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Inquiry by File Name
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7.5.2.3
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Inquiry by Output Item List
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7.5.3
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Closing a File: The CLOSE Statement
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7.6
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Record Operations
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7.6.1
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Record I/O Statement Specifiers
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7.6.2
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Record Access Modes and File Sharing
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7.6.2.1
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Sequential Access
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7.6.2.2
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Direct Access
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7.6.2.3
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Limitations of Record Access by File Organization and Record Type
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7.6.2.4
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File Sharing
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7.6.3
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Specifying the Initial Record Position
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7.6.4
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Advancing and Nonadvancing Record I/O
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7.6.5
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Record Transfer
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7.6.5.1
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Input Record Transfer
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7.6.5.2
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Output Record Transfer
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7.7
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User-Supplied OPEN Procedures: the USEROPEN Specifier
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7.7.1
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Restrictions of Called USEROPEN Functions
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7.7.2
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Example USEROPEN Program and Function
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7.8
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Format of DIGITAL Fortran 90 Record Types
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7.8.1
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Fixed-Length Records
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7.8.2
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Variable-Length Records
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7.8.3
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Segmented Records
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7.8.4
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Stream File Data
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7.8.5
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Stream_CR and Stream_LF Records
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