I have added MatAXPY_MPIDense() to petsc-dev; it will also be in the next patch for petsc-3.0.0 Barry On Dec 30, 2008, at 11:21 PM, Yujie wrote: > Hi, PETSc Developers > > I have checked the codes in PETSc3.0.0. I cannot find there is > MatAXPY() for MPIDense. Now, MatAXPY() supports MPIDense format? if > not, how to do it? thanks a lot. > > Regards, > Yujie