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Virtual Workshop Modules
Fortran 90
Introduction
1. What is Fortran 90?
2. Syntax Improvements
   2.1 Fortran 77 Extensions
   2.2 Attributes
3. Array Features
   3.1 Elemental Operations
   3.2 Array Sections and Constructors
   3.3 Allocatable Arrays
4. Automatic Arrays
   4.1 Declaring Dummy Arguments
5. Interface Block
   5.1 Interface Block Example
   5.2 Module and Use Statements
6. Array Inquiry Functions
   6.1 Example
   6.2 Array Transformation Functions
   6.3 Reduction Operations
   6.4 WHERE
   6.5 Vector Subscripts
7. INTENT Attributes
   7.1 Keyword and Optional Arguments
   7.2 Derived Types
8. HPF and Fortran 90
   8.1 Fortran 90, not HPF
   8.2 Fortran 90 and MPI-2
References
Quiz
Evaluation
Questions?
8. HPF and Fortran 90
Clearly Fortran 90 provides an excellent starting place for any data parallel programming language. Indeed, in some cases the facilities provided in Fortran 90 may be all that is required to implement a data parallel algorithm. However, HPF goes further in not only providing array based operations but more importantly by providing the directives to distribute and align the data.

Most HPF compilers support the following F90 features:

  • FORTRAN77 (except sequence and storage association)
  • Syntax improvements ( __, !, lower case, long names)
  • DO... END DO, IMPLICIT NONE, INCLUDE
  • Attributes in type declarations
  • Array syntax
  • New intrinsics (not necessarily parallelized)

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