[petsc-users] On the edge of 2^31 unknowns

[Eric Chamberland]

On 16/11/15 10:42 AM, Matthew Knepley wrote:
> Sometimes when we do not have exact counts, we need to overestimate
> sizes. This is especially true
> in sparse MatMat.

Ok... so, to be sure, I am correct if I say that recompiling petsc with
"--with-64-bit-indices" is the only solution to my problem?

I mean, no other fixes exist for this overestimation in a more recent 
release of petsc, like putting the result in a "long int" instead?

Thanks,

Eric