[gmx-users] Warning in compiling GMX4.0.2

[Mark Abraham]

Mark Abraham wrote:
> Xavier Periole wrote:
>>
>> Here a following up of the compilation on the IBM.
>>
>> I got the following warning:
>>      1500-036: (I) The NOSTRICT option (default at OPT(3)) has the 
>> potential
>> to alter the semantics of a program. Please refer to documentation on the
>> STRICT/NOSTRICT option for more information.
>>
>> Should that be a worry?
> 
> Depending on the architecture, different optimizations get added in as 
> -Ox gets higher. You can selectively add "higher" things, e.g. -qhot, 
> which is probably a default at -O4. You should start with the compiler 
> man page to get some idea what this might affect.

More exhaustive PDF documentation does accompany all of the IBM 
compilers. Often you can find it in installed in a subdirectory near 
where the compiler is found in your path.

Mark