when using unique_ptr for arrays, they are cleaned up by calling
`delete[] bla.release()`.
At least, cppreference says that the release method
"returns a pointer to the managed object and releases the ownership ".
https://en.cppreference.com/w/cpp/memory/unique_ptr

I think it's more obvious when we talk about "index of component" and
"index of variable" what is meant, rather than having "FIELD_IDX" and
plain "IDX".

We will never use AdamsBashforth with more than 10 steps.

This reverts commit 6c803fa1.

This reverts commit f843c813.

Make it compile, but I would have prefer a class attribute instead of method to decompose template of field

Use a deleter to capture the free of the unique ptr allocated with fftw - update to use only ref of the field in particle system (avoid copy or move)

Berenger Bramas authored 8 years ago and Cristian Lalescu committed 7 years ago

Add a sampling method -- update to be generic against the field -- need to update NSVEparticles::do_stats

Use OpenMP in the new particles system -- parallelize adams_bashforth with a classic for - parallelize computation with a task based scheme

Make it works when the number of processes is not a factor of the size of the problem -- FFTW will give a partition of size 0 to several processes at the end in such case

Update the re-allocation of the particles array after re-distribution -- go to a simple model without memory re-use -- add a class to easily perform the same copy on position index and rhs