Runtime Support and Compilation Methods for User-Specified Data Distributions
INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA
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This paper describes two new ideas by which an HPF compiler can deal with irregular computations effectively. The first mechanism invokes a user specified mapping procedure via a set of compiler directives. The directives allow use of program arrays to describe graph connectivity, spatial location of array elements and computational load. The second mechanism is a simple conservative method that in many cases enables a compiler to recognize that it is possible to reuse previously computed information from inspectors e.g. communication schedules, loop iteration partitions, information that associates off-processor data copies with on-processor buffer locations. We present performance results for these mechanisms from a Fortran 90D compiler implementation.
- Computer Programming and Software
- Computer Hardware