[petsc-users] GMRES restart guidelines

[Justin Chang]

Hi all,

When exactly would one need to modify the default restart value of 30 for
GMRES? I have seen papers like this
<http://computation.llnl.gov/projects/hypre-scalable-linear-solvers-multigrid-methods/Baker-2009-GMRES.pdf>
which suggest playing around with values between 1 and 30, but are there
cases where people need to use large restart values like 50 or 100?


Thanks,
Justin
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