HP Fortran Programmer's Guide (March 2010)

Compiling and linking
Compiling with the f90 command
Chapter 2 35
• A model number (for example, 750 or 870)
• One of the PA-RISC processor names (for example, PA7000, PA7100, or
PA8000)
•The word portable, which causes the compiler to generate code that is
compatible across all PA-RISC 1.1 and 2.0 systems
For best performance, use +DA with the model number or architecture of the
machine on which you plan to execute the program.
The +DA option also specifies the appropriate search path for HP-UX math
libraries. If your program calls mathematical functions, +DA2.0 links in the
PA2.0 version of the math library, while +DA1.1 links in the PA1.1 library
version. (For more information about using math libraries, see the HP-UX
Floating-Point Guide.)
With +DA2.0W, memory addresses are 64-bit values. This allows common
blocks and dynamically allocated memory to exceed 32-bit address limits.
This feature is restricted by the available virtual memory on the system
where the application is run.
NOTE You must specify +DA2.OW to generate 64-bit code. At PA64,
all data types remain the same size as at PA32 except for
pointers. Fortran pointers are hidden from the user and
cannot be directly manipulated.
+DA2.0W
Changes the default size of a Cray pointer. It will become the large of a
default-sized integer and a C pointer (8-bytes), rather than the 4-byte
default.
+DC
Specifies cache values to the compiler. The syntax is +DC<a>:<b>:<c> where
<a> is the total cache size in bytes; where <b> is the cache line size in bytes;
and <c> is the cache associativity.
+DC7200
+DC7200 performs memory hierarchy optimizations for the PA7200
processor.
+DDdatamodel