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New docs for LIDX in CDALL.
This commit is contained in:
Salvatore Filippone
2012-04-16 12:35:14 +00:00
parent 4afc6f1f41
commit 4accecb0c9
96 changed files with 1725 additions and 1657 deletions
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docs/html/node56.html
+37 -15
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@@ -59,7 +59,7 @@ psb_cdall -- Allocates a communication descriptor</A>
<PRE>
call psb_cdall(icontxt, desc_a, info,mg=mg,parts=parts)
call psb_cdall(icontxt, desc_a, info,vg=vg,[mg=mg,flag=flag])
call psb_cdall(icontxt, desc_a, info,vl=vl,[nl=nl,globalcheck=.true.])
call psb_cdall(icontxt, desc_a, info,vl=vl,[nl=nl,globalcheck=.true.,lidx=lidx])
call psb_cdall(icontxt, desc_a, info,nl=nl)
call psb_cdall(icontxt, desc_a, info,mg=mg,repl=.true.)
</PRE>
@@ -181,8 +181,8 @@ Specified as: an integer value. May be specified together with
<code>vl</code>.
</DD>
<DT><STRONG>repl</STRONG></DT>
<DD>Data allocation: build a replicated index space (i.e. all
processes own all indices).
<DD>Data allocation: build a replicated index space
(i.e. all processes own all indices).
<BR>
Scope:<B>global</B>.
<BR>
@@ -204,6 +204,24 @@ Intent: <B>in</B>.
<BR>
Specified as: a logical value, default: <code>.true.</code>
</DD>
<DT><STRONG>lidx</STRONG></DT>
<DD>Data allocation: the set of local indices
<IMG
WIDTH="81" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img85.png"
ALT="$lidx(1:nl)$"> to be assigned to the global indices <IMG
WIDTH="17" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img86.png"
ALT="$vl$">.
<BR>
Scope:<B>local</B>.
<BR>
Type:<B>optional</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: an integer array.
</DD>
</DL>
<P>
@@ -286,10 +304,10 @@ An integer value; 0 means no error has been detected.
-->
<IMG
WIDTH="107" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img85.png"
SRC="img87.png"
ALT="$0\le pv(i) &lt; np$">; if <IMG
WIDTH="51" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img86.png"
SRC="img88.png"
ALT="$nv&gt;1$"> we have an index assigned to multiple
processes, i.e. we have an overlap among the subdomains.
@@ -312,15 +330,15 @@ An integer value; 0 means no error has been detected.
The vector <code>vg</code> must be identical on all
calling processes; its entries may have the ranges <IMG
WIDTH="94" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img87.png"
SRC="img89.png"
ALT="$(0\dots np-1)$">
or <IMG
WIDTH="65" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img88.png"
SRC="img90.png"
ALT="$(1\dots np)$"> according to the value of <code>flag</code>.
The size <IMG
WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img89.png"
SRC="img91.png"
ALT="$mg$"> may be specified via the optional argument <code>mg</code>;
the default is to use the entire vector <code>vg</code>, thus having
<code>mg=size(vg)</code>.
@@ -330,33 +348,37 @@ An integer value; 0 means no error has been detected.
<code>vl(1:nl)</code> assigned to the current process; thus, the global
problem size <IMG
WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img89.png"
SRC="img91.png"
ALT="$mg$"> is given by
the range of the aggregate of the individual vectors <code>vl</code> specified
in the calling processes. The size may be specified via the optional
argument <code>nl</code>; the default is to use the entire vector <code>vl</code>, thus having
<code>nl=size(vl)</code>.
argument <code>nl</code>; the default is to use the entire vector
<code>vl</code>, thus having <code>nl=size(vl)</code>.
If <code>globalcheck=.true.</code> the subroutine will check how many
times each entry in the global index space <IMG
WIDTH="70" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img90.png"
SRC="img92.png"
ALT="$(1\dots mg)$"> is
specified in the input lists <code>vl</code>, thus allowing for the
presence of overlap in the input, and checking for ``orphan''
indices. If <code>globalcheck=.false.</code>, the subroutine will not
check for overlap, and may be significantly faster, but the user
is implicitly guaranteeing that there are neither orphan nor
overlap indices.
overlap indices. The optional argument <code>lidx</code> is available for
those cases in which the user has already established a
global-to-local mapping; if it is specified, each index in
<code>vl(i)</code> will be mapped to the corresponding local index
<code>lidx(i)</code>.
</DD>
<DT><STRONG>nl</STRONG></DT>
<DD>If this argument is specified alone (i.e. without <code>vl</code>)
the result is a generalized row-block distribution in which each
process <IMG
WIDTH="13" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img91.png"
SRC="img93.png"
ALT="$I$"> gets assigned a consecutive chunk of <IMG
WIDTH="60" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img92.png"
SRC="img94.png"
ALT="$N_I=nl$"> global
indices.
</DD>