We are leaving the GPU version. Objetive function too complex

- It still better to keep using normal Optimization method, it seems
that possible divergences are negligible compared to register
pressure/exhaustion

- Now, it seems that the positions are calculated

- `distances` field was uninitialized

Some errors are yet to be iron

of each GPU object

I'm making sure every allocation is foundated

changed using env. variables via CMAKE

functions and methods