Optimization
In the interest of successful compilation of a usable software package
“out of the box,” the default configuration for OOMMF does not
stretch to maximize optimization. However, the configuration files
config/options.tcl and config/platforms/<platform>.tcl include
optimization controls. In the former,
Oc_Option Add * Platform optlevel 2
selects a relatively high but robust level of optimization, equivalent
typically to a compiler option of “-O2” or similar. You may
try increasing optlevel to 3. If you are familiar with your
compiler's command line options, then for finer control you can
experiment with the <platform>.tcl file options
-
program_compiler_c++_remove_flags
- and
-
-
program_compiler_c++_add_flags
The remove flags control selects options to be removed from the compiler
command line. The setting value should be a Tcl list of regular
expressions. (Refer to the
Tcl documentation
on the regexp command for details.) The add flags value is a list of
values to append to the compile command (applied after the remove flags
request, if any). An extended discussion of these controls can be found
in the “Configuration Files” section of the
OOMMF Programming
Manual.
OOMMF Documentation Team
September 27, 2024