[petsc-users] Load distributed matrices from directory

[Matthieu Vitse]

> Le 29 sept. 2017 à 17:43, Barry Smith <bsmith at mcs.anl.gov <mailto:bsmith at mcs.anl.gov>> a écrit :
> 
>  Or is your matrix generator code sequential and cannot generate the full matrix so you want to generate chunks at a time and save to disk then load them? Better for you to refactor your code to work in parallel in generating the whole thing (since you can already generate parts the refactoring shouldn't be terribly difficult).

Thanks for your answer. 

The matrix is already generated in parallel, but we want to keep control on the decomposition which conflicts with directly using PCASM. That’s why we would really like to work only with the distributed matrices. Are there some issues that would prevent me from doing that ? Moreover, ASM is a first step, we would like then to use those matrices for multi-preconditioning our problem, and take into account MPCs (as a consequence we really need to know the decomposition). 

Thanks, 

— 
Matt
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