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psblas3:
base/modules/Makefile base/modules/psb_gen_block_map_mod.f90 base/modules/psb_hash_map_mod.f90 docs/html/footnode.html docs/html/img1.png docs/html/img10.png docs/html/img100.png docs/html/img101.png docs/html/img102.png docs/html/img103.png docs/html/img104.png docs/html/img105.png docs/html/img106.png docs/html/img107.png docs/html/img108.png docs/html/img109.png docs/html/img11.png docs/html/img110.png docs/html/img111.png docs/html/img112.png docs/html/img113.png docs/html/img114.png docs/html/img115.png docs/html/img116.png docs/html/img117.png docs/html/img118.png docs/html/img119.png docs/html/img12.png docs/html/img120.png docs/html/img121.png docs/html/img122.png docs/html/img123.png docs/html/img124.png docs/html/img125.png docs/html/img126.png docs/html/img127.png docs/html/img128.png docs/html/img129.png docs/html/img13.png docs/html/img130.png docs/html/img131.png docs/html/img132.png docs/html/img133.png docs/html/img134.png docs/html/img135.png docs/html/img136.png 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Worked on documentation. 2. Fixed performance problem with gen_block_map: changed to use a hash internally. 3. Changed ppde to implement a convection-diffusion problem with centered differences.
This commit is contained in:
Salvatore Filippone
+164
-94
@@ -7,8 +7,8 @@ original version by: Nikos Drakos, CBLU, University of Leeds
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Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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<HTML>
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<HEAD>
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<TITLE>psb_spasb -- Sparse matrix assembly routine</TITLE>
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<META NAME="description" CONTENT="psb_spasb -- Sparse matrix assembly routine">
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<TITLE>psb_gather -- Gather Global Dense Matrix</TITLE>
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<META NAME="description" CONTENT="psb_gather -- Gather Global Dense Matrix">
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@@ -20,44 +20,135 @@ original version by: Nikos Drakos, CBLU, University of Leeds
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<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
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<BR>
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<B> Next:</B> <A NAME="tex2html854"
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HREF="node54.html">psb_spfree Frees</A>
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<B> Up:</B> <A NAME="tex2html850"
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HREF="node44.html">Data management routines</A>
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<B> Previous:</B> <A NAME="tex2html844"
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HREF="node52.html">psb_spins Insert</A>
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<B> <A NAME="tex2html852"
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<B> Next:</B> <A NAME="tex2html863"
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HREF="node54.html">psb_scatter Scatter</A>
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<B> Up:</B> <A NAME="tex2html859"
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HREF="node50.html">Communication routines</A>
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<B> Previous:</B> <A NAME="tex2html853"
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HREF="node52.html">psb_ovrl Overlap</A>
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<B> <A NAME="tex2html861"
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HREF="node1.html">Contents</A></B>
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<BR>
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<BR>
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<!--End of Navigation Panel-->
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<H2><A NAME="SECTION00079000000000000000">
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psb_spasb -- Sparse matrix assembly routine</A>
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<H2><A NAME="SECTION00063000000000000000">
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psb_gather -- Gather Global Dense Matrix</A>
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</H2>
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<P>
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These subroutines collect the portions of global dense matrix
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distributed over all process into one single array stored on one
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process.
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<P>
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<BR><P></P>
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<DIV ALIGN="CENTER">
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<!-- MATH
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\begin{displaymath}
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glob\_x \leftarrow collect(loc\_x_i)
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\end{displaymath}
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-->
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<IMG
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WIDTH="163" HEIGHT="28" BORDER="0"
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SRC="img73.png"
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ALT="\begin{displaymath}glob\_x \leftarrow collect(loc\_x_i) \end{displaymath}">
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</DIV>
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<BR CLEAR="ALL">
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<P></P>
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where:
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<DL>
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<DT><STRONG><IMG
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WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img74.png"
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ALT="$glob\_x$"></STRONG></DT>
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<DD>is the global submatrix <!-- MATH
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$glob\_x_{1:m,1:n}$
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-->
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<IMG
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WIDTH="91" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img75.png"
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ALT="$glob\_x_{1:m,1:n}$">
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</DD>
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<DT><STRONG><IMG
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WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img76.png"
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ALT="$loc\_x_i$"></STRONG></DT>
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<DD>is the local portion of global dense matrix on
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process <IMG
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WIDTH="9" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
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SRC="img4.png"
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ALT="$i$">.
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</DD>
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<DT><STRONG><IMG
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WIDTH="49" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
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SRC="img77.png"
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ALT="$collect$"></STRONG></DT>
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<DD>is the collect function.
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</DD>
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</DL>
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<P>
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<BR><P></P>
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<DIV ALIGN="CENTER"><A NAME="2769"></A>
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<TABLE>
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<CAPTION><STRONG>Table 15:</STRONG>
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Data types</CAPTION>
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<TR><TD>
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<DIV ALIGN="CENTER">
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<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
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<TR><TD ALIGN="LEFT"><IMG
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WIDTH="33" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img78.png"
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ALT="$x_i, y$"></TD>
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<TD ALIGN="LEFT"><B>Subroutine</B></TD>
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</TR>
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<TR><TD ALIGN="LEFT">Integer</TD>
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<TD ALIGN="LEFT">psb_gather</TD>
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</TR>
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<TR><TD ALIGN="LEFT">Short Precision Real</TD>
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<TD ALIGN="LEFT">psb_gather</TD>
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</TR>
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<TR><TD ALIGN="LEFT">Long Precision Real</TD>
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<TD ALIGN="LEFT">psb_gather</TD>
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</TR>
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<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
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<TD ALIGN="LEFT">psb_gather</TD>
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</TR>
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<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
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<TD ALIGN="LEFT">psb_gather</TD>
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</TR>
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</TABLE>
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</DIV>
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</TD></TR>
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</TABLE>
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</DIV><P></P>
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<BR>
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<P>
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<PRE>
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call psb_spasb(a, desc_a, info, afmt, upd, dupl)
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call psb_gather(glob_x, loc_x, desc_a, info, root)
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call psb_gather(glob_x, loc_x, desc_a, info, root)
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</PRE>
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<P>
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@@ -68,68 +159,70 @@ call psb_spasb(a, desc_a, info, afmt, upd, dupl)
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<DT><STRONG><B>On Entry</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>loc_x</STRONG></DT>
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<DD>the local portion of global dense matrix
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<IMG
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WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img74.png"
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ALT="$glob\_x$">.
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<BR>
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Scope: <B>local</B>
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<BR>
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Type: <B>required</B>
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: a rank one or two array containing numbers of the type
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indicated in Table <A HREF="#tab:gather">15</A>.
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</DD>
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<DT><STRONG>desc_a</STRONG></DT>
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<DD>the communication descriptor.
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<DD>contains data structures for communications.
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<BR>
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Scope:<B>local</B>.
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Scope: <B>local</B>
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<BR>
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Type:<B>required</B>.
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Type: <B>required</B>
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
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</DD>
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<DT><STRONG>afmt</STRONG></DT>
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<DD>the storage format for the sparse matrix.
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<DT><STRONG>root</STRONG></DT>
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<DD>The process that holds the global copy. If <IMG
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WIDTH="75" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img79.png"
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ALT="$root=-1$"> all
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the processes will have a copy of the global vector.
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<BR>
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Scope: <B>global</B>.
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Scope: <B>global</B>
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<BR>
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Type: <B>optional</B>.
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Type: <B>optional</B>
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: an array of characters. Defalt: 'CSR'.
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Specified as: an integer variable <!-- MATH
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$-1\le root\le np-1$
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-->
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<IMG
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WIDTH="140" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img80.png"
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ALT="$-1\le root\le np-1$">, default <IMG
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WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img81.png"
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ALT="$-1$">.
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</DD>
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<DT><STRONG>upd</STRONG></DT>
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<DD>Provide for updates to the matrix coefficients.
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<BR>
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Scope: <B>global</B>.
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<BR>
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Type: <B>optional</B>.
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: integer, possible values: <code>psb_upd_srch_</code>, <code>psb_upd_perm_</code>
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</DD>
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<DT><STRONG>dupl</STRONG></DT>
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<DD>How to handle duplicate coefficients.
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<BR>
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Scope: <B>global</B>.
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<BR>
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Type: <B>optional</B>.
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: integer, possible values: <code>psb_dupl_ovwrt_</code>,
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<code>psb_dupl_add_</code>, <code>psb_dupl_err_</code>.
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</DD>
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>a</STRONG></DT>
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<DD>the matrix to be assembled.
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<DT><STRONG>glob_x</STRONG></DT>
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<DD>The array where the local parts must be gathered.
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<BR>
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Scope:<B>local</B>
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Scope: <B>global</B>
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<BR>
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Type:<B>required</B>
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Type: <B>required</B>
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<BR>
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Intent: <B>inout</B>.
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Intent: <B>out</B>.
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<BR>
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Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
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Specified as: a rank one or two array.
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</DD>
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<DT><STRONG>info</STRONG></DT>
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<DD>Error code.
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@@ -144,52 +237,29 @@ An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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<P>
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<FONT SIZE="+1"><B>Notes</B></FONT>
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<OL>
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<LI>On entry to this routine the descriptor must be in the
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assembled state, i.e. <code>psb_cdasb</code> must already have been called.
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</LI>
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<LI>The sparse matrix may be in either the build or update state;
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</LI>
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<LI>Duplicate entries are detected and handled in both build and
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update state, with the exception of the error action that is only
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taken in the build state, i.e. on the first assembly;
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</LI>
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<LI>If the update choice is <code>psb_upd_perm_</code>, then subsequent
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calls to <code>psb_spins</code> to update the matrix must be arranged in
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such a way as to produce exactly the same sequence of coefficient
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values as encountered at the first assembly;
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</LI>
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<LI>On exit from this routine the matrix is in the assembled state,
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and thus is suitable for the computational routines.
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</LI>
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</OL>
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<P>
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<HR>
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<!--Navigation Panel-->
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<A NAME="tex2html853"
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<A NAME="tex2html862"
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HREF="node54.html">
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