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130 lines
4.4 KiB
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130 lines
4.4 KiB
HTML
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<TITLE>Prerequisites</TITLE>
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<B> Next:</B> <A NAME="tex2html138"
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HREF="node7.html">Optional third party libraries</A>
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<B> Up:</B> <A NAME="tex2html134"
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HREF="node5.html">Configuring and Building MLD2P4</A>
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HREF="node5.html">Configuring and Building MLD2P4</A>
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<H2><A NAME="SECTION00051000000000000000">
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Prerequisites</A>
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</H2>
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<P>
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The following base libraries are needed:
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<DL>
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<DT><STRONG>BLAS</STRONG></DT>
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<DD>[<A
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HREF="node25.html#blas3">11</A>,<A
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HREF="node25.html#blas2">12</A>,<A
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HREF="node25.html#blas1">19</A>] Many vendors provide optimized versions
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of the Basic Linear Algebra Subprograms; if no vendor version is
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available for a given platform, the ATLAS software
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(<code>http://math-atlas.sourceforge.net/</code>)
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may be employed. The reference BLAS from Netlib
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(<code>http://www.netlib.org/blas</code>) are meant to define the standard
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behaviour of the BLAS interface, so they are not optimized for any
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particular plaftorm, and should only be used as a last
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resort. Note that BLAS computations form a relatively small part of
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the MLD2P4/PSBLAS computations; they are however critical when using
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preconditioners based on the UMFPACK or SuperLU third party
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libraries.
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</DD>
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<DT><STRONG>MPI</STRONG></DT>
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<DD>[<A
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HREF="node25.html#MPI2">18</A>,<A
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HREF="node25.html#MPI1">23</A>] A version of MPI is available on most
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high-performance computing systems;
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</DD>
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<DT><STRONG>PSBLAS</STRONG></DT>
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<DD>[<A
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HREF="node25.html#PSBLASGUIDE">15</A>,<A
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HREF="node25.html#psblas_00">17</A>] Parallel Sparse BLAS is
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available from
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<BR><code>http://www.ce.uniroma2.it/psblas</code>; version
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3.3 (or later) is required. Indeed, all the prerequisites
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listed so far are also prerequisites of PSBLAS.
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</DD>
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</DL>
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Please note that the four previous libraries must have Fortran
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interfaces compatible with MLD2P4;
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usually this means that they should all be built with the same
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compiler as MLD2P4.
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HREF="node7.html">Optional third party libraries</A>
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<B> Up:</B> <A NAME="tex2html134"
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HREF="node5.html">Configuring and Building MLD2P4</A>
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