|
|
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
|
|
|
|
|
|
|
|
<!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) -->
|
|
|
|
|
<HTML>
|
|
|
|
|
<HEAD>
|
|
|
|
|
<TITLE>Dense Vector Data Structure</TITLE>
|
|
|
|
|
<META NAME="description" CONTENT="Dense Vector Data Structure">
|
|
|
|
|
<META NAME="keywords" CONTENT="userhtml">
|
|
|
|
|
<META NAME="resource-type" CONTENT="document">
|
|
|
|
|
<META NAME="distribution" CONTENT="global">
|
|
|
|
|
|
|
|
|
|
<META NAME="Generator" CONTENT="LaTeX2HTML v2018">
|
|
|
|
|
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
|
|
|
|
|
|
|
|
|
|
<LINK REL="STYLESHEET" HREF="userhtml.css">
|
|
|
|
|
|
|
|
|
|
<LINK REL="next" HREF="node50.html">
|
|
|
|
|
<LINK REL="previous" HREF="node23.html">
|
|
|
|
|
<LINK REL="up" HREF="node9.html">
|
|
|
|
|
<LINK REL="next" HREF="node44.html">
|
|
|
|
|
</HEAD>
|
|
|
|
|
|
|
|
|
|
<BODY >
|
|
|
|
|
|
|
|
|
|
<DIV CLASS="navigation"><!--Navigation Panel-->
|
|
|
|
|
<A NAME="tex2html776"
|
|
|
|
|
HREF="node44.html">
|
|
|
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
|
|
|
<A NAME="tex2html772"
|
|
|
|
|
HREF="node9.html">
|
|
|
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
|
|
|
<A NAME="tex2html766"
|
|
|
|
|
HREF="node42.html">
|
|
|
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
|
|
|
<A NAME="tex2html774"
|
|
|
|
|
HREF="node1.html">
|
|
|
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
<B> Next:</B> <A NAME="tex2html777"
|
|
|
|
|
HREF="node44.html">Vector Methods</A>
|
|
|
|
|
<B> Up:</B> <A NAME="tex2html773"
|
|
|
|
|
HREF="node9.html">Data Structures and Classes</A>
|
|
|
|
|
<B> Previous:</B> <A NAME="tex2html767"
|
|
|
|
|
HREF="node42.html">Named Constants</A>
|
|
|
|
|
<B> <A NAME="tex2html775"
|
|
|
|
|
HREF="node1.html">Contents</A></B>
|
|
|
|
|
<BR>
|
|
|
|
|
<BR></DIV>
|
|
|
|
|
<!--End of Navigation Panel-->
|
|
|
|
|
|
|
|
|
|
<H2><A NAME="SECTION00043000000000000000"></A>
|
|
|
|
|
<A NAME="sec:vecttype"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
Dense Vector Data Structure
|
|
|
|
|
</H2>
|
|
|
|
|
The vdata<TT>psb_T_vect_type</TT> data structure
|
|
|
|
|
encapsulates the dense vectors in a way similar to sparse matrices,
|
|
|
|
|
i.e. including a base type vbasedata<TT> psb_T_base_vect_type</TT>.
|
|
|
|
|
The user will not, in general, access the vector components directly,
|
|
|
|
|
but rather via the routines of sec. <A HREF="node71.html#sec:toolsrout">6</A>. Among other
|
|
|
|
|
simple things, we define here an extraction method that can be used to
|
|
|
|
|
get a full copy of the part of the vector stored on the local
|
|
|
|
|
process.
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
The type declaration is shown in
|
|
|
|
|
figure <A HREF="#fig:vectype">5</A> where <code>T</code> is a placeholder for the
|
|
|
|
|
data type and precision variants
|
|
|
|
|
<DL>
|
|
|
|
|
<DT><STRONG>I</STRONG></DT>
|
|
|
|
|
<DD>Integer;
|
|
|
|
|
</DD>
|
|
|
|
|
<DT><STRONG>S</STRONG></DT>
|
|
|
|
|
<DD>Single precision real;
|
|
|
|
|
</DD>
|
|
|
|
|
<DT><STRONG>D</STRONG></DT>
|
|
|
|
|
<DD>Double precision real;
|
|
|
|
|
</DD>
|
|
|
|
|
<DT><STRONG>C</STRONG></DT>
|
|
|
|
|
<DD>Single precision complex;
|
|
|
|
|
</DD>
|
|
|
|
|
<DT><STRONG>Z</STRONG></DT>
|
|
|
|
|
<DD>Double precision complex.
|
|
|
|
|
</DD>
|
|
|
|
|
</DL>
|
|
|
|
|
The actual data is contained in the polymorphic component <code>v%v</code>;
|
|
|
|
|
the separation between the application and the actual data is
|
|
|
|
|
essential for cases where it is necessary to link to data storage made
|
|
|
|
|
available elsewhere outside the direct control of the
|
|
|
|
|
compiler/application, e.g. data stored in a graphics accelerator's
|
|
|
|
|
private memory.
|
|
|
|
|
|
|
|
|
|
<DIV ALIGN="CENTER"><A NAME="fig:vectype"></A><A NAME="939"></A>
|
|
|
|
|
<TABLE>
|
|
|
|
|
<CAPTION ALIGN="BOTTOM"><STRONG>Figure 5:</STRONG>
|
|
|
|
|
The PSBLAS defined data type that
|
|
|
|
|
contains a dense vector.</CAPTION>
|
|
|
|
|
<TR><TD><DIV ALIGN="CENTER">
|
|
|
|
|
</DIV><TABLE WIDTH="85%">
|
|
|
|
|
<TR><TD>
|
|
|
|
|
<PRE>
|
|
|
|
|
type psb_T_base_vect_type
|
|
|
|
|
TYPE(KIND_), allocatable :: v(:)
|
|
|
|
|
end type psb_T_base_vect_type
|
|
|
|
|
|
|
|
|
|
type psb_T_vect_type
|
|
|
|
|
class(psb_T_base_vect_type), allocatable :: v
|
|
|
|
|
end type psb_T_vect_type
|
|
|
|
|
</PRE></TD></TR>
|
|
|
|
|
</TABLE>
|
|
|
|
|
<DIV ALIGN="CENTER">
|
|
|
|
|
</DIV></TD></TR>
|
|
|
|
|
</TABLE>
|
|
|
|
|
</DIV>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
<BR><HR>
|
|
|
|
|
<!--Table of Child-Links-->
|
|
|
|
|
<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
|
|
|
|
|
|
|
|
|
|
<UL CLASS="ChildLinks">
|
|
|
|
|
<LI><A NAME="tex2html778"
|
|
|
|
|
HREF="node44.html">Vector Methods</A>
|
|
|
|
|
<LI><A NAME="tex2html779"
|
|
|
|
|
HREF="node45.html">get_nrows -- Get number of rows in a dense vector</A>
|
|
|
|
|
<LI><A NAME="tex2html780"
|
|
|
|
|
HREF="node46.html">sizeof -- Get memory occupation in bytes
|
|
|
|
|
of a dense vector</A>
|
|
|
|
|
<LI><A NAME="tex2html781"
|
|
|
|
|
HREF="node47.html">set -- Set contents of the vector</A>
|
|
|
|
|
<LI><A NAME="tex2html782"
|
|
|
|
|
HREF="node48.html">get_vect -- Get a copy of the vector contents</A>
|
|
|
|
|
<LI><A NAME="tex2html783"
|
|
|
|
|
HREF="node49.html">clone -- Clone current object</A>
|
|
|
|
|
</UL>
|
|
|
|
|
<!--End of Table of Child-Links-->
|
|
|
|
|
|
|
|
|
|
<DIV CLASS="navigation"><HR>
|
|
|
|
|
<!--Navigation Panel-->
|
|
|
|
|
<A NAME="tex2html776"
|
|
|
|
|
HREF="node44.html">
|
|
|
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
|
|
|
<A NAME="tex2html772"
|
|
|
|
|
HREF="node9.html">
|
|
|
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
|
|
|
<A NAME="tex2html766"
|
|
|
|
|
HREF="node42.html">
|
|
|
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
|
|
|
<A NAME="tex2html774"
|
|
|
|
|
HREF="node1.html">
|
|
|
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
<B> Next:</B> <A NAME="tex2html777"
|
|
|
|
|
HREF="node44.html">Vector Methods</A>
|
|
|
|
|
<B> Up:</B> <A NAME="tex2html773"
|
|
|
|
|
HREF="node9.html">Data Structures and Classes</A>
|
|
|
|
|
<B> Previous:</B> <A NAME="tex2html767"
|
|
|
|
|
HREF="node42.html">Named Constants</A>
|
|
|
|
|
<B> <A NAME="tex2html775"
|
|
|
|
|
HREF="node1.html">Contents</A></B> </DIV>
|
|
|
|
|
<!--End of Navigation Panel-->
|
|
|
|
|
|
|
|
|
|
</BODY>
|
|
|
|
|
</HTML>
|
