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psblas3:
base/internals/psi_idx_ins_cnv.f90 base/modules/psb_base_tools_mod.f90 base/modules/psb_gen_block_map_mod.f90 base/modules/psb_hash_map_mod.f90 base/modules/psb_indx_map_mod.f90 base/modules/psb_list_map_mod.f90 base/modules/psb_repl_map_mod.f90 base/modules/psi_i_mod.f90 base/tools/psb_cdins.f90 docs/html/footnode.html docs/html/index.html docs/html/node1.html docs/html/node10.html docs/html/node100.html docs/html/node101.html docs/html/node102.html docs/html/node103.html docs/html/node104.html docs/html/node105.html docs/html/node106.html docs/html/node107.html docs/html/node108.html docs/html/node109.html docs/html/node11.html docs/html/node110.html docs/html/node111.html docs/html/node112.html docs/html/node113.html docs/html/node114.html docs/html/node115.html docs/html/node116.html docs/html/node117.html docs/html/node118.html docs/html/node119.html docs/html/node12.html docs/html/node120.html docs/html/node13.html docs/html/node14.html docs/html/node15.html docs/html/node16.html docs/html/node17.html docs/html/node18.html docs/html/node19.html docs/html/node2.html docs/html/node20.html docs/html/node21.html docs/html/node22.html docs/html/node23.html docs/html/node24.html docs/html/node25.html docs/html/node26.html docs/html/node27.html docs/html/node28.html docs/html/node29.html docs/html/node3.html docs/html/node30.html docs/html/node31.html docs/html/node32.html docs/html/node33.html docs/html/node34.html docs/html/node35.html docs/html/node36.html docs/html/node37.html docs/html/node38.html docs/html/node39.html docs/html/node4.html docs/html/node40.html docs/html/node41.html docs/html/node42.html docs/html/node43.html docs/html/node44.html docs/html/node45.html docs/html/node46.html docs/html/node47.html docs/html/node48.html docs/html/node49.html docs/html/node5.html docs/html/node50.html docs/html/node51.html docs/html/node52.html docs/html/node53.html docs/html/node54.html docs/html/node55.html docs/html/node56.html docs/html/node57.html docs/html/node58.html docs/html/node59.html docs/html/node6.html docs/html/node60.html docs/html/node61.html docs/html/node62.html docs/html/node63.html docs/html/node64.html docs/html/node65.html docs/html/node66.html docs/html/node67.html docs/html/node68.html docs/html/node69.html docs/html/node7.html docs/html/node70.html docs/html/node71.html docs/html/node72.html docs/html/node73.html docs/html/node74.html docs/html/node75.html docs/html/node76.html docs/html/node77.html docs/html/node78.html docs/html/node79.html docs/html/node8.html docs/html/node80.html docs/html/node81.html docs/html/node82.html docs/html/node83.html docs/html/node84.html docs/html/node85.html docs/html/node86.html docs/html/node87.html docs/html/node88.html docs/html/node89.html docs/html/node9.html docs/html/node90.html docs/html/node91.html docs/html/node92.html docs/html/node93.html docs/html/node94.html docs/html/node95.html docs/html/node96.html docs/html/node97.html docs/html/node98.html docs/html/node99.html docs/html/userhtml.html docs/psblas-3.0.pdf docs/src/intro.tex New docs for LIDX. New LIDX parm in idx_cnv_ins.
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Salvatore Filippone
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@@ -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_precbld -- Builds a preconditioner</TITLE>
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<META NAME="description" CONTENT="psb_precbld -- Builds a preconditioner">
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<TITLE>psb_precinit -- Initialize a preconditioner</TITLE>
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<META NAME="description" CONTENT="psb_precinit -- Initialize a preconditioner">
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<META NAME="resource-type" CONTENT="document">
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<META NAME="distribution" CONTENT="global">
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@@ -20,137 +20,118 @@ 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="tex2html1629"
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HREF="node114.html">psb_precaply Preconditioner</A>
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<B> Up:</B> <A NAME="tex2html1625"
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HREF="node111.html">Preconditioner routines</A>
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<B> Previous:</B> <A NAME="tex2html1619"
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HREF="node112.html">psb_precinit Initialize</A>
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<B> <A NAME="tex2html1627"
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<B> Next:</B> <A NAME="tex2html1630"
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HREF="node114.html">psb_precbld Builds</A>
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<B> Up:</B> <A NAME="tex2html1626"
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HREF="node112.html">Preconditioner routines</A>
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<B> Previous:</B> <A NAME="tex2html1620"
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HREF="node112.html">Preconditioner routines</A>
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<B> <A NAME="tex2html1628"
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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="SECTION000112000000000000000">
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psb_precbld -- Builds a preconditioner</A>
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<H2><A NAME="SECTION000111000000000000000">
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psb_precinit -- Initialize a preconditioner</A>
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</H2>
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<P>
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<PRE>
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call psb_precbld(a, desc_a, prec, info,amold,vmold)
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call psb_precinit(prec, ptype, info)
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</PRE>
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<P>
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Synchronous.
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<DD>Asynchronous.
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</DD>
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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>a</STRONG></DT>
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<DD>the system sparse matrix.
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Scope: <B>local</B>
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<DT><STRONG>ptype</STRONG></DT>
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<DD>the type of preconditioner.
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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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<BR>
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Intent: <B>in</B>, target.
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Intent: <B>in</B>.
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<BR>
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Specified as: a sparse matrix data structure spdata<TT>psb_Tspmat_type</TT>.
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Specified as: a character string, see usage notes.
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</DD>
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<DT><STRONG><B>On Exit</B></STRONG></DT>
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<DD><P>
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</DD>
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<DT><STRONG>prec</STRONG></DT>
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<DD>the preconditioner.
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<BR>
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Scope: <B>local</B>
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<DD>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>inout</B>.
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<BR>
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Specified as: an already initialized precondtioner data structure precdata<TT>psb_prec_type</TT>
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<BR></DD>
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<DT><STRONG>desc_a</STRONG></DT>
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<DD>the problem communication descriptor.
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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>, target.
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<BR>
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Specified as: a communication descriptor data structure descdata<TT>psb_desc_type</TT>.
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Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
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</DD>
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<DT><STRONG>amold</STRONG></DT>
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<DD>The desired dynamic type for the internal matrix storage.
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<BR>
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Scope: <B>local</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: an object of a class derived from spbasedata<TT>psb_T_base_sparse_mat</TT>.
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</DD>
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<DT><STRONG>vmold</STRONG></DT>
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<DD>The desired dynamic type for the internal vector storage.
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<BR>
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Scope: <B>local</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: an object of a class derived from vbasedata<TT>psb_T_base_vect_type</TT>.
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<P>
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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>prec</STRONG></DT>
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<DD>the preconditioner.
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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>inout</B>.
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<BR>
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Specified as: a precondtioner data structure precdata<TT>psb_prec_type</TT>
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<BR></DD>
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<DT><STRONG>info</STRONG></DT>
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<DD>Error code.
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<DD>Scope: <B>global</B>
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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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Type: <B>required</B>
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<BR>
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Intent: <B>out</B>.
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<BR>
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An integer value; 0 means no error has been detected.
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Error code: if no error, 0 is returned.
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</DD>
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</DL>
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<FONT SIZE="+1"><B>Notes</B></FONT>
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Legal inputs to this subroutine are interpreted depending on the
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<IMG
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WIDTH="42" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
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SRC="img136.png"
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ALT="$ptype$"> string as follows<A NAME="tex2html30"
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HREF="footnode.html#foot7107"><SUP>3</SUP></A>:
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<DL>
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<DT><STRONG>NONE</STRONG></DT>
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<DD>No preconditioning, i.e. the preconditioner is just a copy
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operator.
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</DD>
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<DT><STRONG>DIAG</STRONG></DT>
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<DD>Diagonal scaling; each entry of the input vector is
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multiplied by the reciprocal of the sum of the absolute values of
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the coefficients in the corresponding row of matrix <IMG
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WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
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SRC="img1.png"
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ALT="$A$">;
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</DD>
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<DT><STRONG>BJAC</STRONG></DT>
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<DD>Precondition by a factorization of the
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block-diagonal of matrix <IMG
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WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
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SRC="img1.png"
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ALT="$A$">, where block boundaries are determined
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by the data allocation boundaries for each process; requires no
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communication. Only the incomplete factorization <IMG
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WIDTH="56" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
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SRC="img137.png"
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ALT="$ILU(0)$"> is
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currently implemented.
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</DD>
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</DL>
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