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mld2p4-2:

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Docs updates.
This commit is contained in:
Salvatore Filippone
2017-04-21 13:29:28 +00:00
parent f47513eb80
commit 05ab5f4d55
79 changed files with 6788 additions and 8368 deletions
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docs/src/gettingstarted.tex
+9 -9
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@@ -41,9 +41,9 @@ The following steps are required:
is multi-level, then two steps must be performed, as specified next.
\begin{enumerate}
\item[4.1] \emph{Build the aggregation hierarchy for a given matrix.} This is
performed by the routine \verb|hierarchy_bld|.
performed by the routine \verb|hierarchy_build|.
\item[4.2] \emph{Build the preconditioner for a given matrix.} This is performed
by the routine \verb|smoothers_bld|.
by the routine \verb|smoothers_build|.
\end{enumerate}
If the selected preconditioner is one-level, it is built in a single step,
performed by the routine \verb|bld|.
@@ -118,7 +118,7 @@ on parallel computers.
The code reported in Figure~\ref{fig:ex1} shows how to set and apply the default
multi-level preconditioner available in the real double precision version
of MLD2P4 (see Table~\ref{tab:precinit}). This preconditioner is chosen
by simply specifying \verb|'ML'| as second argument of \verb|P%init|
by simply specifying \verb|'ML'| as the second argument of \verb|P%init|
(a call to \verb|P%set| is not needed) and is applied with the CG
solver provided by PSBLAS (the matrix of the system to be solved is
assumed to be positive definite). As previously observed, the modules
@@ -179,8 +179,8 @@ the corresponding codes are available in \verb|examples/fileread/|.
call P%init(P,'ML',info)
!
! build the preconditioner
call P%hierarchy_bld(A,desc_A,P,info)
call P%smoothers_bld(A,desc_A,P,info)
call P%hierarchy_build(A,desc_A,P,info)
call P%smoothers_build(A,desc_A,P,info)
!
! set the solver parameters and the initial guess
@@ -264,8 +264,8 @@ boundary conditions are also available in the directory \verb|examples/pdegen|.
call_P%set(P,'SMOOTHER_TYPE','BJAC',info)
call P%set(P,'COARSE_SOLVE','BJAC',info)
call P%set(P,'COARSE_SWEEPS',8,info)
call P%hierarchy_bld(A,desc_A,P,info)
call P%smoothers_bld(A,desc_A,P,info)
call P%hierarchy_build(A,desc_A,P,info)
call P%smoothers_build(A,desc_A,P,info)
... ...
\end{verbatim}
}
@@ -291,8 +291,8 @@ boundary conditions are also available in the directory \verb|examples/pdegen|.
call P%set('SMOOTHER_SWEEPS',2,info,pos='POST')
call P%set('COARSE_SOLVE','MUMPS',info)
call P%set('COARSE_MAT','DIST',info)
call P%hierarchy_bld(A,desc_A,P,info)
call P%smoothers_bld(A,desc_A,P,info)
call P%hierarchy_build(A,desc_A,P,info)
call P%smoothers_build(A,desc_A,P,info)
... ...
! solve Ax=b with preconditioned CG
call psb_krylov('BICGSTAB',A,P,b,x,tol,desc_A,info)