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This commit is contained in:
Salvatore Filippone
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-1
@@ -413,7 +413,7 @@ doubling of memory occupation, and thus would be almost always far
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from optimal.
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\subsubsection{User-defined index mappings}
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\label{sec:usermaps}
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PSBLAS supports user-defined global to local index mappings, subject
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to the constraints outlined in sec.~\ref{sec:appstruct}:
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\begin{enumerate}
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+38
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@@ -154,11 +154,15 @@ An integer value; 0 means no error has been detected.
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indices. If \verb|globalcheck=.false.|, the subroutine will not
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check for overlap, and may be significantly faster, but the user
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is implicitly guaranteeing that there are neither orphan nor
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overlap indices. The optional argument \verb|lidx| is available for
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overlap indices.
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\item[lidx] The optional argument \verb|lidx| is available for
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those cases in which the user has already established a
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global-to-local mapping; if it is specified, each index in
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\verb|vl(i)| will be mapped to the corresponding local index
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\verb|lidx(i)|.
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\verb|lidx(i)|. When specifying the argument \verb|lidx| the user
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would also likely employ \verb|lidx| in calls to \verb|psb_cdins|
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and \verb|local| in calls to \verb|psb_spins| and \verb|psb_geins|;
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see also sec.~\ref{sec:usermaps}.
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\item[nl] If this argument is specified alone (i.e. without \verb|vl|)
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the result is a generalized row-block distribution in which each
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process $I$ gets assigned a consecutive chunk of $N_I=nl$ global
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@@ -196,13 +200,17 @@ An integer value; 0 means no error has been detected.
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\addcontentsline{toc}{subsection}{psb\_cdins}
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\begin{verbatim}
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call psb_cdins(nz, ia, ja, desc_a, info)
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call psb_cdins(nz, ia, ja, desc_a, info [,ila,jla])
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call psb_cdins(nz,ja,desc,info[,jla,mask,lidx])
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\end{verbatim}
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This subroutine examines the edges of the graph associated with the
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discretization mesh (and isomorphic to the sparsity pattern of a
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linear system coefficient matrix), storing them as necessary into the
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communication descriptor.
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communication descriptor. In the first form the edges are specified as
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pairs of indices $ia(i),ja(i)$; the starting index $ia(i)$ should
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belong to the current process.
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In the second form only the remote indices $ja(i)$ are specified.
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\begin{description}
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\item[Type:] Asynchronous.
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@@ -222,9 +230,20 @@ Scope: {\bf local}.\\
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Type: {\bf required}.\\
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Intent: {\bf in}.\\
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Specified as: an integer array of length $nz$.
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\item[mask] Mask entries in \verb|ja|, they are inserted only when the
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corresponding \verb|mask| entries are \verb|.true.|\\
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Scope: {\bf local}.\\
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Type: {\bf optional}.\\
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Intent: {\bf in}.\\
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Specified as: a logical array of length $nz$, default \verb|.true.|.
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\item[lidx] User defined local indices for \verb|ja|.\\
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Scope: {\bf local}.\\
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Type: {\bf optional}.\\
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Intent: {\bf in}.\\
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Specified as: an integer array of length $nz$.
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%% \item[is] the row offset.\\
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%% Scope:{\bf local}.\\
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%% Type:{\bf optional}.\\
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%% Type:{\bf optional}.\\a
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%% Specified as: an integer value.
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%% \item[js] the column offset.\\
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%% Scope: {\bf local}.\\
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@@ -244,6 +263,17 @@ Scope: {\bf local} \\
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Type: {\bf required} \\
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Intent: {\bf out}.\\
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An integer value; 0 means no error has been detected.
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\item[ila] the local indices of the starting vertex of the edges being inserted.\\
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Scope: {\bf local}.\\
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Type: {\bf optional}.\\
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Intent: {\bf out}.\\
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Specified as: an integer array of length $nz$.
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\item[jla] the local indices of the end vertex of the edges being inserted.\\
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Scope: {\bf local}.\\
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Type: {\bf optional}.\\
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Intent: {\bf out}.\\
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Specified as: an integer array of length $nz$.
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\end{description}
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{\par\noindent\large\bfseries Notes}
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\begin{enumerate}
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@@ -251,13 +281,9 @@ An integer value; 0 means no error has been detected.
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build state;
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\item This routine automatically ignores edges that do not
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insist on the current process, i.e. edges for which neither the starting
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nor the end vertex belong to the current process.
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\item There exists another interface for this routine
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\begin{verbatim}
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call psb_cdins(nz, ja, desc_a, info)
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\end{verbatim}
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which will digest all entries in \verb|ja| and add them to the
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communication requirements.
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nor the end vertex belong to the current process.
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\item The second form of this routine will be useful when dealing with
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user-specified index mappings; see also~\ref{sec:usermaps}.
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\end{enumerate}
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@@ -24,7 +24,7 @@
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\relax
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\pdfcompresslevel=0 %-- 0 = none, 9 = best
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\pdfinfo{ %-- Info dictionary of PDF output /Author (Alfredo Buttari)
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/Title (Parallel Sparse BLAS V. 3.0-beta)
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/Title (Parallel Sparse BLAS V. 3.0)
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/Subject (Parallel Sparse Basic Linear Algebra Subroutines)
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/Keywords (Computer Science Linear Algebra Fluid Dynamics Parallel Linux MPI PSBLAS Iterative Solvers Preconditioners)
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/Creator (pdfLaTeX)
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@@ -80,7 +80,7 @@
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\begin{document}
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\pdfbookmark{PSBLAS-v3.0-beta User's Guide}{title}
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\pdfbookmark{PSBLAS-v3.0 User's Guide}{title}
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\newlength{\centeroffset}
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\setlength{\centeroffset}{-0.5\oddsidemargin}
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@@ -90,7 +90,7 @@
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\vspace*{\stretch{1}}
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\noindent\hspace*{\centeroffset}\makebox[0pt][l]{\begin{minipage}{\textwidth}
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\flushright
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{\Huge\bfseries PSBLAS 3.0-beta User's guide
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{\Huge\bfseries PSBLAS 3.0 User's guide
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}
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\noindent\rule[-1ex]{\textwidth}{5pt}\\[2.5ex]
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\hfill\emph{\Large A reference guide for the Parallel Sparse BLAS library}
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@@ -103,7 +103,7 @@
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by Salvatore Filippone\\
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and Alfredo Buttari}\\
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University of Rome ``Tor Vergata''.\\[3ex]
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April 16, 2012
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May 4, 2012
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\end{minipage}}
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%\addtolength{\textwidth}{\centeroffset}
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@@ -86,9 +86,9 @@
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University of Rome ``Tor Vergata'', Italy\\[2ex]
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%\\[10ex]
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%\today
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Software version: 3.0-beta\\
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Software version: 3.0\\
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%\today
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April 16, 2012.
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May 4, 2012.
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\cleardoublepage
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\begingroup
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\renewcommand*{\thepage}{toc}
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