/
errata_from_331_to_340.html
1018 lines (935 loc) · 22.5 KB
/
errata_from_331_to_340.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
<meta name="generator" content="AsciiDoc 8.6.9" />
<title>Bugs corrected from 3.3.1 to 3.4.0</title>
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div.title, caption.title,
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text-decoration: underline;
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padding-top: 0.5em;
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margin-left: 0;
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border: 1px solid silver;
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p {
margin-top: 0.5em;
margin-bottom: 0.5em;
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ul, ol, li > p {
margin-top: 0;
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ul > li > * { color: black; }
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font-size: inherit;
color: navy;
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margin: 0;
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font-weight: bold;
font-size: 1.1em;
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}
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margin-bottom: 1.5em;
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div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
div.admonitionblock {
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margin-bottom: 1.5em;
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div.admonitionblock {
margin-top: 2.0em;
margin-bottom: 2.0em;
margin-right: 10%;
color: #606060;
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div.content { /* Block element content. */
padding: 0;
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margin-top: 1.0em;
margin-bottom: 0.5em;
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div.title + * {
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td div.title:first-child {
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span.maroon { color: maroon; }
span.navy { color: navy; }
span.olive { color: olive; }
span.purple { color: purple; }
span.red { color: red; }
span.silver { color: silver; }
span.teal { color: teal; }
span.white { color: white; }
span.yellow { color: yellow; }
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span.black-background { background: black; }
span.blue-background { background: blue; }
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span.teal-background { background: teal; }
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span.yellow-background { background: yellow; }
span.big { font-size: 2em; }
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div.unbreakable { page-break-inside: avoid; }
/*
* xhtml11 specific
*
* */
div.tableblock {
margin-top: 1.0em;
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color: #527bbd;
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p.table {
margin-top: 0;
}
/* Because the table frame attribute is overriden by CSS in most browsers. */
div.tableblock > table[frame="void"] {
border-style: none;
}
div.tableblock > table[frame="hsides"] {
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border-right-style: none;
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div.tableblock > table[frame="vsides"] {
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/*
* html5 specific
*
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table.tableblock.frame-sides {
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table.tableblock.frame-none {
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text-align: center;
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th.tableblock.halign-right, td.tableblock.halign-right {
text-align: right;
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th.tableblock.valign-top, td.tableblock.valign-top {
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th.tableblock.valign-bottom, td.tableblock.valign-bottom {
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/*
* manpage specific
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padding-bottom: 0.5em;
border-top: 2px solid silver;
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body.manpage div.sectionbody {
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@media print {
body.manpage div#toc { display: none; }
}
</style>
<script type="text/javascript">
/*<+'])');
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// browsers).
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/////////////////////////////////////////////////////////////////////
// Footnotes generator
/////////////////////////////////////////////////////////////////////
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*/
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<body class="article">
<div id="header">
<h1>Bugs corrected from 3.3.1 to 3.4.0</h1>
<div id="toc">
<div id="toctitle">Table of Contents</div>
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</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_strong_span_class_green_bug0084_span_strong_bug_ming_gu"><strong><span class="green">bug0084</span></strong> :: Bug Ming Gu</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug reported by Ming Gu (UC Berkeley) through Jim Demmel
</p>
</li>
<li>
<p>
LAPACK driver routine infected: All SVD solvers when asked for singular values only. (Pathological matrix only)
</p>
</li>
<li>
<p>
bug is present in LAPACK since 3.1.1 and in Matlab 2010a and 2010b
</p>
</li>
<li>
<p>
For very specific matrices (given by Ming Gu), the DQDS code converges much slower than expected. The algorithm converges for these matrices un many more iterations
than the LAPACK maximum number of iterations allow.
</p>
</li>
<li>
<p>
bug fix: (1) increase the maximum number of iterations in xlasq2, (2) fall back on Demmel/Kahan algorithm in case of nonconvergence of dqds.
</p>
</li>
<li>
<p>
corrected by Benjamin Lipschitz on Mon Oct 3rd 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0083_span_strong_bug_in_the_testing_of_cherfsx_function"><strong><span class="green">bug0083</span></strong> :: Bug in the testing of CHERFSX function</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug reported by Olga Mitrofanova (Intel MKL team), on the LAPACK forum
</p>
</li>
<li>
<p>
see <a href="https://icl.cs.utk.edu/lapack-forum/viewtopic.php?t=2644">forum topic 2644</a>
</p>
</li>
<li>
<p>
Test of CHERFSX function doesn’t work because there is an error in ../TESTING/LIN/cerrhex.f ( lines 284-330 ). This function uses the diagonal pivoting factorization of a Hermitian indefinite matrix instead of the diagonal pivoting factorization of a Hermitian indefinite packed matrix. When CHERFSX is included in conditional "IF( LSAMEN( 2, C2, <em>HE</em> ) ) THEN " the test works.
</p>
</li>
<li>
<p>
corrected by Julie on Mon Aug 15th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0082_span_strong_cz_laed2_memory_problems_when_compz_i_in_dstedc"><strong><span class="green">bug0082</span></strong> :: [CZ]laed2 Memory problems when COMPZ='I' in DSTEDC</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug reported by Edward Smyth (NAG)
</p>
</li>
<li>
<p>
Added IF statement to prevent potential out of range errors with "K+1" indices.
</p>
</li>
<li>
<p>
corrected by Rodney on Wed Jun 21th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0081_span_strong_sd_laed2_workspace_size_is_wrong_when_ncvt_nru_ncc_0"><strong><span class="green">bug0081</span></strong> :: [SD]laed2 WORKSPACE size is wrong when NCVT = NRU = NCC = 0</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug reported by Hatem Ltaief (KAUST)
</p>
</li>
<li>
<p>
Update Workspace requirement to 4*N because the routine call [SD]LASCL that requires a 4*N workspace.
</p>
</li>
<li>
<p>
corrected by Julie on Thu May 19th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0080_span_strong_cz_bdsqr_workspace_size_is_wrong_when_ncvt_nru_ncc_0"><strong><span class="green">bug0080</span></strong> :: [CZ]BDSQR WORKSPACE size is wrong when NCVT = NRU = NCC = 0</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug reported by Hatem Ltaief (KAUST)
</p>
</li>
<li>
<p>
Update Workspace requirement to 4*N because the routine call [SD]LASCL that requires a 4*N workspace.
</p>
</li>
<li>
<p>
corrected by Julie on Thu May 19th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0079_span_strong_ila_sdcz_lr_out_of_bound_access_in_the_do_loop_for_array_a"><strong><span class="green">bug0079</span></strong> :: ILA[SDCZ]LR out of bound access in the DO LOOP for array A.</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug detected by Julie
</p>
</li>
<li>
<p>
Change DO LOOP condition and add a IF inside the DO LOOP
</p>
</li>
<li>
<p>
corrected by Rodney on Tue April 21th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0065_span_strong_workspace_queries_not_being_used"><strong><span class="green">bug0065</span></strong> :: workspace queries not being used</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
bug report by Clint Whaley on October 27th, 2010
</p>
</li>
<li>
<p>
DGESVD does not perform a workspace query on worker
</p>
</li>
<li>
<p>
functions such as DGELQF, but rather it hardwires in an assumption as
</p>
</li>
<li>
<p>
to LQF’s workspace requirements. This means that if LQF is changed,
</p>
</li>
<li>
<p>
GESVD breaks. This actually happens in ATLAS, because we provide a
</p>
</li>
<li>
<p>
faster GELQF, which sometimes uses extra workspace. For LAPACK itself,
</p>
</li>
<li>
<p>
it represents extra dependencies that don’t need to be there.
</p>
</li>
<li>
<p>
corrected by Julie on Mon Nov 7th 2011
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_strong_span_class_green_bug0029_span_strong_problem_of_workspace_query_with_dstedc"><strong><span class="green">bug0029</span></strong> :: problem of WORKSPACE query with DSTEDC</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<strong>CORRECTED</strong>
</p>
</li>
<li>
<p>
reported by Tiago Requeijo on Mon Mar 30 2009
</p>
</li>
<li>
<p>
see <a href="http://icl.cs.utk.edu/lapack-forum/viewtopic.php?f=2&t=1389">forum topic 1389</a>
</p>
</li>
<li>
<p>
see also email from Edward Smyth on June 21st 2011
</p>