Dear Sir,
I have be using PETSc for many days. Recently I find one subroutine in
PETSc is a little slow, It is an initialization subroutine to fill in the
matrix elements:
call MatSetValues(A,ione,II,ione,JJ,v,INSERT_VALUES,ierr)
I find that the total time to fill in the matrix data is even much longer
than the iteration time to solve the system
call KSPSolve(ksp,b,x,ierr)
How could this happen? Could I accelerate the time for filling in the
data?
Sincerely,
Changjun Chen
