Thank you very much. On Wednesday, 29 July 2020 09:59:43 UTC-7, Wolfgang Bangerth wrote: > > On 7/28/20 12:11 PM, 孙翔 wrote: > > Hi, I followed step-17 and build a system matrix of which type > > is PETScWrappers::MPI::SparseMatrix. I want to output it after > assembling. How > > should I do it? Thank you very much. > > If performance doesn't matter, just loop over all indices i and j and > output > the value of the matrix. If you're running in parallel, you need to > restrict > the loop over i to the locally owned range. > > Best > W. > > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bang...@colostate.edu > <javascript:> > www: http://www.math.colostate.edu/~bangerth/ > >
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