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<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2>Hi
All,</FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2>Has anyone used
Conjugate Gradient Solver + Icomplete Cholesky Preconditionner in parallel case?
I tried as said in the manual : I use MATMPIROWBS for the storage of the
matrice. However I get this message :</FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2>PETSC ERROR: To use
incomplete
Cholesky<BR>
preconditioning with a MATMPIROWBS matrix you must declare it to
be<BR>
symmetric using the option
MatSetOption(A,MAT_SYMMETRIC)!<BR></FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2>So I tried adding
this option (even if in the namual it is written that it is not required). Then
I obtained this message</FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2>PETSC ERROR:
MatSetOption_MPIRowbs() line 1411 in src/mat/impls/rowbs/mpi/mpirowbs.c<BR>PETSC
ERROR: No support for this operation for this object type!<BR>PETSC ERROR:
unknown option!<BR>PETSC ERROR: MatSetOption() line 4137 in
src/mat/interface/matrix.c<BR></FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=239023314-09052006><FONT face=Arial size=2><FONT face=Courier
size=3><FONT face=Arial size=2>In advance
thanks,</FONT></FONT></FONT></SPAN></DIV>
<DIV><SPAN class=239023314-09052006><SPAN><FONT face=Arial
size=2></FONT> </DIV></SPAN></SPAN>
<DIV> </DIV>
<DIV align=left><FONT face=Arial size=2>Faïza</FONT></DIV>
<DIV> </DIV>
<FONT SIZE=3 COLOR=BLUE><PRE>
Pensez à visiter le site BRGM sur.... http://www.brgm.fr/
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