This section lists restrictions you should observe when using
the HP Fortran compiler and when using HP Fortran language features
in your programs.
+FPI |
 |
+FPI will not work when calling any type of runtime
libraries or intrinsics.
Object
files generated at optimization level 4 |
|
Object files generated by the compiler at optimization level
4, called intermediate object files, are intended to be temporary
files. These object files contain an intermediate representation of
the user code in a format that is designed for advanced optimizations.
Therefore, Hewlett-Packard may be required to change the format
of these intermediate files in any compiler release or patch. Use
of intermediate object files should be limited to the compiler which
created them. For the same reason, intermediate object files should
not be included into archived libraries that may be used by different
versions of the compiler. The compiler will issue an error message
and terminate when an incompatible intermediate object file is detected.
+Oparallel_intrinsics |
|
The +Oparallel_intrinsics option links in the parallel version
of many of the Fortran intrinsics located in libF90_parallel. However,
libF90_parallel for Itanium®-based
systems is still only a serial library. It will be parallelized
in a future patch.
“OUT
OF FREE SPACE” Error |
|
The HP Fortran Programmer’s Reference states
that the IOSTAT= and ERR= specifiers return error 913 (OUT OF FREE
SPACE) when the I/O library attempts to use more memory than is
available. However, these specifiers do not detect all instances
of error 913, especially those caused by memory allocation failures
in the I/O library.
NODEPCHK
ignored |
|
The NODEPCHK directive is sometimes ignored. The symptom was
that programs which use the directive would not parallelize as well
as expected.
To parallelize your code, use another directive such as loop_parallel. In loops defined with NODEPCHK, we recommend that you not invoke parallelism.
Printable version
