System for automatically increasing program execution speed

Details System for automatically increasing program execution speed System for automatically increasing program execution speed

1992-02-25

1994-02-01

Envall, Jr., Roy N.

Boots, shoes, and leggings

36441901, G06F 1520, G06F 1538

Patent

active

052837300

ABSTRACT:
Based on dynamic characteristics as a FORTRAN program is run, which are obtained by using a tool for collecting program running characteristics for computer hardware having a vector processing architecture, a subroutine selecting unit compares previously entered target values with its actual computing performance for an execution frequency, CPU execution time, an execution cost ratio and a vectoring ratio of each subroutine invoked as the entire program is run once, and extracts any subroutine which does not reach the target value as one to be revised while, at the performance information collecting unit, any non-vectored DO loop is detected from among the subroutines to be revised, and subsequently, it is determined whether vectoring directives may be issued or not or whether it is possible to vector the loop or not. A source program revising means revises its coding to make it possible to automatically carry out speedy revising operations issuing for the vectoring directives.

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