[petsc-users] Argument out of range error only in certain mpi sizes

[Sajid Ali]

One last question I have is : Does PETSc automatically chose a good chunk
size for the size of the vector it has and use it to write the dataset ? Or
is this something I shouldn't really worry about (not that it affects me
now but it would be good to not have a slow read from a python script for
post-processing).
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