[petsc-users] exit kspsolve at half of the max iterations if residual is not reduced by an order

[NAN ZHAO]

Dear all,

I am trying to find ways to speed up my pests kspsolve, my old code use an
older solver and it exit the solving loop when residual is not reduced by a
certain amount compared with initial residual, and then redo the
computation with other tricks. I am wondering if PETSC has this function.

Thanks,
Nan
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