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Updated docs with CLONE method.
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Salvatore Filippone
2013-04-01 14:34:41 +00:00
parent db2daa7ab9
commit 8ba8f2b213
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@@ -7,8 +7,8 @@ original version by: Nikos Drakos, CBLU, University of Leeds
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
<TITLE>psb_spall -- Allocates a sparse matrix</TITLE>
<META NAME="description" CONTENT="psb_spall -- Allocates a sparse matrix">
<TITLE>psb_cdfree -- Frees a communication descriptor</TITLE>
<META NAME="description" CONTENT="psb_cdfree -- Frees a communication descriptor">
<META NAME="keywords" CONTENT="userhtml">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
@@ -20,44 +20,44 @@ original version by: Nikos Drakos, CBLU, University of Leeds
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<H2><A NAME="SECTION00077000000000000000">
psb_spall -- Allocates a sparse matrix</A>
<H2><A NAME="SECTION00075000000000000000">
psb_cdfree -- Frees a communication descriptor</A>
</H2>
<P>
<PRE>
call psb_spall(a, desc_a, info, nnz)
call psb_cdfree(desc_a, info)
</PRE>
<P>
@@ -69,28 +69,16 @@ call psb_spall(a, desc_a, info, nnz)
<DD>
</DD>
<DT><STRONG>desc_a</STRONG></DT>
<DD>the communication descriptor.
<DD>the communication descriptor to be freed.
<BR>
Scope:<B>local</B>.
<BR>
Type:<B>required</B>.
<BR>
Intent: <B>in</B>.
Intent: <B>inout</B>.
<BR>
Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
</DD>
<DT><STRONG>nnz</STRONG></DT>
<DD>An estimate of the number of nonzeroes in the local
part of the assembled matrix.
<BR>
Scope: <B>global</B>.
<BR>
Type: <B>optional</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: an integer value.
</DD>
</DL>
<P>
@@ -98,17 +86,6 @@ Specified as: an integer value.
<DT><STRONG><B>On Return</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>a</STRONG></DT>
<DD>the matrix to be allocated.
<BR>
Scope:<B>local</B>
<BR>
Type:<B>required</B>
<BR>
Intent: <B>out</B>.
<BR>
Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>.
</DD>
<DT><STRONG>info</STRONG></DT>
<DD>Error code.
<BR>
@@ -121,49 +98,9 @@ Intent: <B>out</B>.
An integer value; 0 means no error has been detected.
</DD>
</DL>
<FONT SIZE="+1"><B>Notes</B></FONT>
<OL>
<LI>On exit from this routine the sparse matrix is in the build
state.
</LI>
<LI>The descriptor may be in either the build or assembled state.
</LI>
<LI>Providing a good estimate for the number of nonzeroes <IMG
WIDTH="31" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img100.png"
ALT="$nnz$"> in
the assembled matrix may substantially improve performance in the
matrix build phase, as it will reduce or eliminate the need for
(potentially multiple) data reallocations.
</LI>
</OL>
<P>
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