On Sat, Dec 24, 2011 at 7:42 AM, TAY wee-beng <span dir="ltr"><<a href="mailto:zonexo@gmail.com">zonexo@gmail.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
I am solving 4 linear equations in my cfd code. I have declared them as:<br>
<br>
KSP ksp,ksp_semi_x,ksp_semi_y,ksp_<u></u>semi_z<br>
<br>
PC pc,pc_semi_x,pc_semi_y,pc_<u></u>semi_z<br>
<br>
PCType ptype<br>
<br>
KSPType ksptype<br>
<br>
However, I only want to solve the 1st eqn via hypre (thru command prompt), and the others via KSPBCGS.<br>
<br>
I now add:<br>
<br>
ksp_type richardson -pc_type hypre -pc_type_hypre boomeramg<br>
<br>
Are all the eqns now solved using hypre?<br>
<br>
How should I specify in the command prompt?</blockquote><div><br></div><div><br></div><div>Are you using DMDA? If so, its easy to do PCFIELDSPLIT from the command line.</div><div><br></div><div> Matt </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Yours sincerely,<br>
<br>
TAY wee-beng<br>
<br>
</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<br>