Copyright © Digital Equipment Corporation. 1999.
All Rights Reserved.
C*$* optimize set to level 6, KAP attempts parallel
execution of loops that contain I/O operations. KAP does not
ordinarily execute such loops in parallel. Use this directive
only on systems with parallel I/O capabilities and only when I/O
rarely if ever executes. For example, this directive is useful
in loops that check for error conditions unlikely to occur or in
loops containing status messages disabled by run-time flags. If
the I/O executes in parallel, the order of the I/O may be disturbed
resulting in irreproducible effects. See the parallelio
qualifier, Section 5.2.5. For additional
information about all C*$* optimize levels, see Section 6.3.6.
A higher optimization level results in increased compilation time. Many programs written for parallel execution do not need advanced transformations. A lower optimization level may suffice.
Copyright © Digital Equipment Corporation. 1999.
All Rights Reserved.