[petsc-users] [dev at libelemental.org] Re: The product of two MPIDENSE matrices

[Jed Brown]

Joon Hee Choi <choi240 at purdue.edu> writes:

> ----- Original Message -----
> From: "Jack Poulson" <poulson at stanford.edu>
> To: dev at libelemental.org, "Jed Brown" <jedbrown at mcs.anl.gov>
> Cc: "Joon Hee Choi" <choi240 at purdue.edu>, "Hong Zhang" <hzhang at mcs.anl.gov>, "PETSc users list" <petsc-users at mcs.anl.gov>
> Sent: Tuesday, October 1, 2013 6:15:23 PM
> Subject: Re: [dev at libelemental.org] Re: [petsc-users] The product of two MPIDENSE matrices

This quoting style is bulky and looks like a forward.  We have to
complain to vendors about things like this or they ruin everything.

> Yes, we have the similar multiplication as the form. 
> BTW, can we use the multiplication function with the MPIAIJ matrix we created in Petsc? Usually, the parallel matrix is row distributed matrix.

You can use MatTransposeMatMult with an MPIAIJ and a MPIDENSE.  (This is
the standard case mentioned earlier, and I don't understand what
Elemental is offering you in this situation.  Do you have other dense
matrices running around?)
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