Category
@PROCESS
None.
Context
None.
Purpose
Informs the compiler that a given compilation unit may reference write-through-enabled or cache-inhibited storage.
Defaults
-qnodirectstorage
Usage
Use this option with discretion. It is intended for programmers who know how the memory and cache blocks work, and how to tune their applications for optimal performance. For a program to execute correctly on all Power® implementations of cache organization, the programmer should assume that separate instruction and data caches exist, and should program to the separate cache model.
Note: Using
the -qdirectstorage option together with
the CACHE_ZERO directive
may cause your program to fail, or to produce incorrect results.
Related information
- CACHE_ZERO in the XL Fortran Language Reference.