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<H1><A NAME="SECTION04760000000000000000">Wrong Results</A></H1>
<A NAME="secwrongresults"> </A><A NAME="6327"> </A>
<P>
Wrong results from ScaLAPACK routines are most often caused by
incorrect usage.
It is also possible that wrong results are caused by a bug
outside of ScaLAPACK, in the compiler or in one of the library routines,
such as the BLAS, the BLACS, or the underlying message-passing layer, that
are linked with ScaLAPACK.
Test suites are available for ScaLAPACK, the PBLAS, the BLACS, and the BLAS.
The ScaLAPACK installation guide [<A HREF="node189.html#lawn93">24</A>] or the BLACS installation
guide should be consulted
for descriptions of the tests and for advice on resolving problems.
<P>
A list of known problems, compiler errors, and bugs in ScaLAPACK routines is
maintained on <EM>netlib</EM>; see Chapter <A HREF="node8.html#chapessentials">1</A>.
<P>
Users who suspect they have found a new bug in a ScaLAPACK routine are
encouraged to report it promptly to the developers as directed in
Chapter <A HREF="node8.html#chapessentials">1</A>.
The bug report should include a test case, a description of
the problem and expected results, and the actions, if any,
that the user has already taken to fix the bug.
<P>
<BR> <HR>
<P><ADDRESS>
<I>Susan Blackford <BR>
Tue May 13 09:21:01 EDT 1997</I>
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