My understanding is that MatrixMarket format is different from Harwell-Boeing? I could not find a Harwell-Boeing loader in src/mat/examples/tests (though there is a writer). Does anyone have C (PETSc?) code to read in Harwell-Boeing? If so we could merge it into the MatrixMarket (coordiate storage) reader code and then (with a command line switch) read in either format and dump in PETSc format? Barry On Tue, 5 Apr 2005, Victor Eijkhout wrote:

At 10:32 AM -0500 4/5/05, Hong Zhang wrote:

...

We have code that read MatrixMarket format, and write into a petsc binary file. Then you can use petsc MatLoad() for viewing or computation.

I'm interested in this too. I wrote my own version. Maybe a good idea to add this to the petsc distribution?