[GRASS-dev] Debugging, parallelism, etc.

[Brad ReDacted]

On 10/9/2022 11:25 PM, Maris Nartiss wrote:

> There is no issue with supporting both OpenMP and pthreads as most of
> libraries use neither of them. There are a few modules with some
> parallelism implemented and in such case they use only one of options
> thus bypassing any compatibility issues per se.
This is true today. Will it be true tomorrow? Some guidelines are in order.
> As for valgrind noise – it comes from design decisions made decades a
> go – each module is a short running independent program and thus it is
> left to OS to reclaim memory at exit. Analysis tools sometimes also
> report potential uninitialized use but in cases that can not be
> reached during a normal GRASS module run. Unfortunately improving
> GRASS quite often is like restoring an ancient artefact where it is
> hard to tell bugs from features apart.

Valgrind's issue is it doesn't support OpenMP without tricking GCC into 
converting to pthreads, which completely defeats the point.

-- 

Best Regards,
-Brad