<div dir="ltr">Thiago,<div><br></div><div>I keep coming back to this when I get free time, and it's still a bit perplexing. Is the ndn-debug-scenario.cc that you have at <a href="https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043#file-valgrind-leak-check-full-txt">https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043#file-valgrind-leak-check-full-txt</a> up to date? </div><div><br></div><div>The Valgrind points to line 195 as being the culprit, but that's just setting a prefix (
<span style="color:rgb(36,41,46);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:pre;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">producerHelper.</span><span class="gmail-pl-c1" style="box-sizing:border-box;color:rgb(0,92,197);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:pre;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">SetPrefix</span><span style="color:rgb(36,41,46);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:pre;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">(ndnPrefix);)</span></div><div><span style="color:rgb(36,41,46);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,Courier,monospace;font-size:12px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:pre;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div>
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span>Some things we can at least look into:</span></span><br></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span><br></span></span></div><div><ol><li>What version of the C standard library is installed on your system? (ldd --version)<br><br></li><li>When you said "ndnSIM 2.4 didn't work for us", did you mean you couldn't install ndnSIM 2.4, or you did install it and it still doesn't work?<br><br></li><li>Deep in the belly of ns-3 (<a href="https://www.nsnam.org/doxygen/simple-ref-count_8h_source.html#l00105">https://www.nsnam.org/doxygen/simple-ref-count_8h_source.html#l00105</a>) - it appears there is an m_count variable, but it's an unsigned 32 bit integer... not 64 bit. So I'm wondering if the number of references it's tracking exceeds <span style="color:rgb(34,34,34);font-family:Roboto,arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">4,294,967,295. </span>
<br><br></li><li>Alternatively, the problem most clearly (unclearly?) says it's "
<pre class="gmail-aLF-aPX-K0-aPE" style="display:block;font-family:"Courier New",Courier,monospace,arial,sans-serif;margin:0px;white-space:pre-wrap;word-wrap:break-word;background-color:rgb(255,255,255);color:rgb(0,0,0);font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">Address 0x8 is not stack'd, malloc'd or (recently) free'd
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">and</span></pre></li></ol><span style="color:rgb(0,0,0);font-family:"Courier New",Courier,monospace,arial,sans-serif;font-size:14px;white-space:pre-wrap"> ==1647== Process terminating with default action of signal 11 (SIGSEGV) ==1647== Access not within mapped region at address 0x8</span></div><div><font color="#000000" face="Courier New, Courier, monospace, arial, sans-serif"><span style="font-size:14px;white-space:pre-wrap"><br></span></font></div><div><font color="#000000" face="Courier New, Courier, monospace, arial, sans-serif"><span style="font-size:14px;white-space:pre-wrap"><br></span></font>So I'm wondering... where is this 0x8 address having a value assigned or being accessed? 0x8 doesn't seem to be a likely memory address to be allocated... so a pointer is being set to the value "8" somewhere.... I don't see you doing that anywhere. So I'm wondering if there's a buffer overflow somewhere.<span style="color:rgb(0,0,0);font-family:"Courier New",Courier,monospace,arial,sans-serif;font-size:14px;white-space:pre-wrap">
</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span><br></span></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span><br></span></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span>Thanks,</span></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span><br></span></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span>John</span></span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 16, 2018 at 5:10 PM, Thiago Teixeira <span dir="ltr"><<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
<div class="m_3458002992727898148WordSection1">
<p class="MsoNormal">Hi John,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I added more memory when I upgraded to the latest Valgrind version. This test was run with 4GB of memory on the VM. My colleague also performed the same test on a VM with 8GB, same result.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Is there any other test that we can run? (ndnSIM 2.4 didn’t work for us)<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Thiago<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><a name="m_3458002992727898148__MailEndCompose"><u></u> <u></u></a></p>
<span></span>
<p class="MsoNormal"><span class=""><b>From:</b> John Baugh [mailto:<a href="mailto:jpbaugh@umich.edu" target="_blank">jpbaugh@umich.edu</a>] <br>
</span><b>Sent:</b> Wednesday, May 16, 2018 3:53 PM<br>
<b>To:</b> Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>></p><div><div class="h5"><br>
<b>Cc:</b> Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu" target="_blank">shijunxiao@email.arizona.edu</a>><wbr>; ndnsim <<a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a>><br>
<b>Subject:</b> Re: [ndnSIM] Simulation terminated with signal SIGSEGV - possible bug<u></u><u></u></div></div><p></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Thiago,<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">My best estimate is this based on valgrind: your simulation is using almost 900 MB of memory, and your system only has 2.0 GB. I think by the time it gets to 2,000 or so seconds, you simply are running out of memory and there's a SIGSEGV.
You'll probably need more memory in this system, or to use a more powerful system. Under HEAP SUMMARY, it says
<u></u><u></u></p>
<pre style="background:white"><span style="font-size:10.5pt;color:black"> in use at exit: <b>897,122,422</b> bytes in 7,147,817 blocks<u></u><u></u></span></pre>
<pre style="background:white"><span style="font-size:10.5pt;color:black">==1647== total heap usage: 40,377,629,822 allocs, 40,370,482,008 frees, 4,349,761,010,258 bytes allocated<u></u><u></u></span></pre>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">I assume with the OS, other apps running, and the simulator, it's just too much for the device you're on.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">John<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Wed, May 16, 2018 at 10:18 AM, Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal">Hi John,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">The Valgrind (version 3.13) test ended. Please see output attached. I also posted
<a href="https://umass.box.com/s/s9qql8vo1kjy170qm8ijxcm6181ioip4" target="_blank">
here</a> for future reference.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Please let me know is there’s something else I can do.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Best,<u></u><u></u></p>
<p class="MsoNormal">Thiago<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><a name="m_3458002992727898148_m_7247890011309502609__MailEndCompose"> </a><u></u><u></u></p>
<p class="MsoNormal"><b>From:</b> John Baugh [mailto:<a href="mailto:jpbaugh@umich.edu" target="_blank">jpbaugh@umich.edu</a>]
<br>
<b>Sent:</b> Monday, May 7, 2018 4:02 AM<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><br>
<b>To:</b> Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>><br>
<b>Cc:</b> Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu" target="_blank">shijunxiao@email.arizona.edu</a>><wbr>; ndnsim <<a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a>><br>
<b>Subject:</b> Re: [ndnSIM] Simulation terminated with signal SIGSEGV - possible bug<u></u><u></u></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">Thiago,<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I am sorry to ask you to do this, but could you perhaps upgrade your Valgrind and run again if possible? I've been looking into your issue and I found a few places that said Valgrind
3.11.0 doesn't recognize the <span style="font-size:9.0pt;font-family:Consolas;color:#24292e;background:white">
random_device::_M_getval()</span> instruction so Valgrind is exiting too soon before it finds the actual problem, in my estimation. The _M_getval is used several calls deep from some of the ndnSIM code, and Valgrind doesn't recognize it, so it's terminating
and not giving much useful information.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">John<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">On Sun, May 6, 2018 at 12:58 PM, Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
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<div>
<p class="MsoNormal">Hi John,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Please find the Valgrind output. I ran both Valgrind leak-check=yes and leak-check=full<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><a href="https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043#file-valgrind-leak-check-full-txt" target="_blank">https://gist.github.com/<wbr>thiteixeira/<wbr>8c4fd1deb884b548d1f071ebb1bee0<wbr>43#file-valgrind-leak-check-<wbr>full-txt</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><a href="https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043#file-valgrind-leak-check-yes-txt" target="_blank">https://gist.github.com/<wbr>thiteixeira/<wbr>8c4fd1deb884b548d1f071ebb1bee0<wbr>43#file-valgrind-leak-check-<wbr>yes-txt</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">TT<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><b>From:</b> John Baugh [mailto:<a href="mailto:jpbaugh@umich.edu" target="_blank">jpbaugh@umich.edu</a>]
<br>
<b>Sent:</b> Sunday, May 6, 2018 8:40 AM<br>
<b>To:</b> Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>><br>
<b>Cc:</b> Junxiao Shi <<a href="mailto:shijunxiao@email.arizona.edu" target="_blank">shijunxiao@email.arizona.edu</a>><wbr>; ndnsim <<a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a>><u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><br>
<b>Subject:</b> Re: [ndnSIM] Simulation terminated with signal SIGSEGV - possible bug<u></u><u></u></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">Looks like a heap corruption of some sort.<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Can we try valgrind?<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">This may help:. <a href="http://www.lists.cs.ucla.edu/pipermail/ndnsim/2017-July/003991.html" target="_blank">http://www.lists.cs.<wbr>ucla.edu/pipermail/ndnsim/<wbr>2017-July/003991.html</a><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">John<u></u><u></u></p>
</div>
</div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<div>
<p class="MsoNormal">On Sun, May 6, 2018, 7:35 AM Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>> wrote:<u></u><u></u></p>
</div>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Hi,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Thanks for your answers. I ran the simulation again and posted the gdb back trace full on the Gist (<a href="https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043#file-gbd_bt_full_output-txt" target="_blank">https://gist.github.com/<wbr>thiteixeira/<wbr>8c4fd1deb884b548d1f071ebb1bee0<wbr>43#file-gbd_bt_full_output-txt</a><wbr>)<u></u><u></u></p>
<p class="MsoNormal"><a name="m_3458002992727898148_m_7247890011309502609_m_-686377555702368"> </a><u></u><u></u></p>
<p class="MsoNormal">@John, I will try ndnSIM 2.4, thanks.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Best,<u></u><u></u></p>
<p class="MsoNormal">Thiago<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><b>From:</b> John Baugh [mailto:<a href="mailto:jpbaugh@umich.edu" target="_blank">jpbaugh@umich.edu</a>]
<br>
<b>Sent:</b> Saturday, May 5, 2018 6:16 PM<br>
<b>To:</b> Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>><br>
<b>Cc:</b> <a href="mailto:ndnsim@lists.cs.ucla.edu" target="_blank">ndnsim@lists.cs.ucla.edu</a><br>
<b>Subject:</b> Re: [ndnSIM] Simulation terminated with signal SIGSEGV - possible bug<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">Thiago,<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I was able to run your scenario in ndnSIM 2.4. So I suspect this is either an introduced bug in the simulator itself, or perhaps there's something not correctly configured in your
environment. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">I can't reproduce the error, so as Dr. Shi suggested, it would be useful to see your GDB and/or Valgrind output.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">John<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Sat, May 5, 2018 at 9:23 AM, Thiago Teixeira <<a href="mailto:tteixeira@umass.edu" target="_blank">tteixeira@umass.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hi all,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">We have a scenario where nodes have two interfaces, one wireless and one wired. Nodes are position on a grid fashion and the producer is located in the center of the grid.<u></u><u></u></p>
<p class="MsoNormal">We run this scenario for 4,000 seconds, but the simulation ends at 2,099 seconds with the code
<u></u><u></u></p>
<p class="MsoNormal"> Command ['/home/vagrant/ndnSIM/ns-3/<wbr>build/scratch/ndn-debug-<wbr>scenario'] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program>
--command-template="gdb --args %s <args>").<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Running with GDB didn’t offer any other insights. Here are the steps to reproduce the issue:<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### Expected behavior<u></u><u></u></p>
<p class="MsoNormal">Simulations run until the specified time Simulator::Stop(Seconds(4000.<wbr>0));<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### Actual behavior<u></u><u></u></p>
<p class="MsoNormal">Simulations crash (see error message below) before Simulator::Stop(Seconds(4000.<wbr>0));<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">`Command ['/home/vagrant/ndnSIM/ns-3/<wbr>build/scratch/ndn-debug-<wbr>scenario'] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb
--args %s <args>").`<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### Code to reproduce the problem<u></u><u></u></p>
<p class="MsoNormal">See Gist:<u></u><u></u></p>
<p class="MsoNormal"><a href="https://gist.github.com/thiteixeira/8c4fd1deb884b548d1f071ebb1bee043" target="_blank">https://gist.github.com/<wbr>thiteixeira/<wbr>8c4fd1deb884b548d1f071ebb1bee0<wbr>43</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### ndnSIM version<u></u><u></u></p>
<p class="MsoNormal">ndnSIM-2.5-2-ge674a01<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### Operating system and version<u></u><u></u></p>
<p class="MsoNormal">Ubuntu 16.04.4 LTS<u></u><u></u></p>
<p class="MsoNormal">memory size: 2000MiB<u></u><u></u></p>
<p class="MsoNormal">1 cpu: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">#### Other relevant information<u></u><u></u></p>
<p class="MsoNormal">compiled ndnSIM using the optimized version:<u></u><u></u></p>
<p class="MsoNormal">./waf configure -d optimized<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Increasing the number of nodes makes the simulation crash at an earlier time.<u></u><u></u></p>
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______________________________<wbr>_________________<br>
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<a href="http://www.lists.cs.ucla.edu/mailman/listinfo/ndnsim" target="_blank">http://www.lists.cs.ucla.edu/<wbr>mailman/listinfo/ndnsim</a><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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