[Trilinos-Users] Zoltan question

[Erik Boman]

JB,

Zoltan2 has a different design. All communication is done using the 
Teuchos and Tpetra packages, with the exception of a few optional 
libraries like ParMetis and PT-Scotch that require MPI. Teuchos::Comm is 
the abstraction layer for communication, and you could try to implement 
an interface to your custom communication library.

Erik

Biddiscombe, John A. wrote:
> Erik
>
>   
>> Zoltan assumes "everyone" has MPI on parallel machines so there is no
>> abstraction layer above that. However, Zoltan only uses a small subset
>> of MPI so you could implement that subset in your own messaging library
>> and link with that as a "fake" MPI library. We use that approach for
>> serial builds, so it should work.
>>     
>
> OK. That sounds quite doable. I’ll have a go at that.
>
> Would that same argument hold for zoltan2, or are the dependencies on
> other parts of trilinos such that it would become too complicated as they
> all pull in other bits of MPI?
>
> Ta
>
> JB
>
>
>