Dear sir: I output the value of the "PETSC_SMALL", it is 1E-10. But i think it should be more smaller than this for double float number.Regards
You're probably looking for PETSC_MACHINE_EPSILON.
ztdepyahoo via petsc-users writes:
> Dear sir:
> I output the value of the "PETSC_SMALL", it is 1E-10. But i think it
> should be more smaller than this for double float number.
> Regards
Given the nonzero structure of the matrix I'd be surprised if either
GAMG/boomerAMG or ASM was particularly efficacious. I don't have any
recommendations for iterative methods.
Barry
> On Feb 11, 2019, at 8:41 AM, Abhyankar, Shrirang G via petsc-users
> wrote:
>
>
>
> From: Just
Justin Chang via petsc-users writes:
> So I used -mat_view draw -draw_pause -1 on my medium sized matrix and got
> this output:
>
> [image: 1MPI.png]
>
> So it seems there are lots of off-diagonal terms, and that a decomposition
> of the problem via matload would give a terrible unbalanced proble
Hello,
I am trying to load matrix in Matrix Market format. I found an example on
mat file (ex78) whih can be tested by using .dat file. Since .dat file and
.mtx file are similar in structure (specially afiro_A.dat file is similar
to amesos2_test_mat0.mtx since they both have 3 columns and the co
