<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style lang="EN-US"><font face="Times New Roman">Dear Sir</font></span><span style>£¬</span><span style lang="EN-US"></span></font></p>
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<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">I have two questions about BLIS.</font></font></span></p>
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<div style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">First, I have used it to solve a IP problem successfully in about 30 seconds.</font></font></span></div>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">But when I disable the cutStretagy (setted in the par file) it cannot solve the same problem using best-first or best-estimate search strategy.</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">It will cause the MPI to abort saying “one task is killed and other tasks is terminated.”</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">When using the depth-first, it reached the setted nodelimate 1 million</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Will BLIS use normal BB when the cutStretagy is disabled? </font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Or am I wrong to only disable the cutstretagy without changing other options?</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Or the efficiency difference between cut and normal BB are so large?</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Why it can not solve the IP problem?</font></font></span></p>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Our IP model has 75861 rows, 115173 columns and 1417123 elements(MPS file)</font></font></span></p>
<div style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman"></font></font></span> </div>
<div style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">Second, the Blis_heurStrategy and Blis_cutStrategy have an auto option.</font></font></span></div>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3"><font face="Times New Roman">If auto is on when will it do or not do heuristic or cut?</font></font></span></p></blockquote>
<p style="TEXT-INDENT:21.75pt;MARGIN:0cm 0cm 0pt" class="MsoNormal"><span style lang="EN-US"><font size="3" face="Times New Roman"> </font></span></p><span style lang="EN-US">Thank you very much.</span>