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<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol;color:#333333;mso-fareast-language:ZH-CN"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ZH-CN">CPU time</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ZH-CN"> -
the time actually spent by CPU executing method code<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:24.0pt;text-indent:-.25in;line-height:13.5pt;mso-list:l0 level1 lfo1;background:white">
<![if !supportLists]><span style="font-size:10.0pt;font-family:Symbol;color:#333333;mso-fareast-language:ZH-CN"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ZH-CN">Wall time</span></b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333;mso-fareast-language:ZH-CN"> -
the real-world time elapsed between method entry and method exit. If there are other threads/processes concurrently running on the system, they can affect the results.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#333333">CPU time is the total execution time or runtime for which the CPU was dedicated to a process.<span class="apple-converted-space"> It is possible that the CPU
that master process was on had other processes that used many CPU cycles.</span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> chipps-bounces@list.coin-or.org [mailto:chipps-bounces@list.coin-or.org]
<b>On Behalf Of </b>???<br>
<b>Sent:</b> Thursday, January 12, 2012 2:44 AM<br>
<b>To:</b> chipps@list.coin-or.org<br>
<b>Subject:</b> [CHiPPS] Problems about the search log<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="background:#C7EDCC">Dear Professors,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="background:#C7EDCC">I have some troubles about the search log generated after the problem is solved.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="background:#C7EDCC">First, I would like to know the difference between wallclock and CPU time.</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="background:#C7EDCC">Second, there is these lines in the log file:</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Search CPU time (master) = 3.51222 seconds<o:p></o:p></p>
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<p class="MsoNormal">Max CPU time (worker) = 5.32033<br>
Min CPU time (worker) = 3.50822<o:p></o:p></p>
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<p class="MsoNormal">Search wallclock time (master) = 6.65905 seconds<o:p></o:p></p>
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<p class="MsoNormal">Max wallclock (worker) = 6.65418<br>
Min wallclock (worker) = 6.65133<o:p></o:p></p>
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<div>
<p class="MsoNormal"> <o:p></o:p></p>
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<div>
<p class="MsoNormal">Could you tell me the duration of master`s CPU time and wallclock? <o:p></o:p></p>
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<div>
<p class="MsoNormal">Is it the duration from the beginning to the end of the tree search?<o:p></o:p></p>
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<div>
<p class="MsoNormal">And why the master`s CPU time is shorter than the Max CPU time of worker?<o:p></o:p></p>
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<div>
<p class="MsoNormal">While the master`s wallclock is longer than the Max wallclock time of worker?<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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