<div dir="ltr">Hi Kihang,<div>Without seeing the exact error message, and an example of the graphical output, this is difficult to answer. Changing vpYF or tmYLLabelDeltaF should not result in a segmentation fault per se. I wonder if you are running out of memory? Is the seg fault a malloc error? If it is, can you alter the code to use less memory, or switch to a different machine? If it is not, then I unfortunately do not know what to suggest. Hopefully someone else on the ncl-talk list can chime in here.</div><div>Adam</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Aug 22, 2021 at 4:53 AM Kihang Youn via ncl-talk <<a href="mailto:ncl-talk@mailman.ucar.edu">ncl-talk@mailman.ucar.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<span style="margin:0px;font-size:12pt;color:rgb(0,0,0);font-family:calibri,arial,helvetica,sans-serif">Hi All,</span>
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<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">I got some segmentation errors during draw or frame steps. </span><span style="margin:0px"></span></div>
<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><br>
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<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">To debug or figure out a workaround, I tried commenting out the functions.</span></div>
<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><br>
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<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">First, once I comment on the gsn_add_polyline function, Seg error does not occur.</span></div>
<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><br>
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<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">But polyline is needed, so I uncommented it and looked at the other values, and as a result, </span><span style="margin:0px;font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">no
error occurred by adjusting the following variables </span><span style="margin:0px;font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">res@vpYF or </span><span style="margin:0px;font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">res@tmYLLabelDeltaF.</span></div>
<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="margin:0px"><br>
</span></div>
<div style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="margin:0px;font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Can such variables affect the size of an image or frame and cause a segmentation
fault? </span></div>
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<span style="margin:0px;font-size:12pt;color:rgb(0,0,0)"><span style="margin:0px;font-family:calibri,arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">For information, the ncl script draws multiple pictures with the do statement,
but an error occurs only in some pictures.</span></span>
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Please let me know if you have any suggestions.</div>
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Belows are system information and library information</div>
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CentOS Linux release 8.3.2011<br>
Derived from Red Hat Enterprise Linux 8.3<br>
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ncl/6.6.2<br>
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ulimit -a
<div>core file size (blocks, -c) unlimited</div>
<div>data seg size (kbytes, -d) unlimited</div>
<div>scheduling priority (-e) 0</div>
<div>file size (blocks, -f) unlimited</div>
<div>pending signals (-i) 2317435</div>
<div>max locked memory (kbytes, -l) unlimited</div>
<div>max memory size (kbytes, -m) unlimited</div>
<div>open files (-n) 16384</div>
<div>pipe size (512 bytes, -p) 8</div>
<div>POSIX message queues (bytes, -q) 819200</div>
<div>real-time priority (-r) 0</div>
<div>stack size (kbytes, -s) unlimited</div>
<div>cpu time (seconds, -t) unlimited</div>
<div>max user processes (-u) 300</div>
<div>virtual memory (kbytes, -v) 16777216</div>
file locks (-x) unlimited<br>
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Best Regards,</div>
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Kihang<br>
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<span style="color:rgb(12,100,192)"><b>Kihang Youn</b></span> - Application Analyst | Lenovo DCG <span>Professional Services</span>
<div>Mobile: +82-10-9374-9396<br>
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E-mail: <a href="mailto:kyoun@lenovo.com" target="_blank">kyoun@lenovo.com</a><br>
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<a href="https://mailman.ucar.edu/mailman/listinfo/ncl-talk" rel="noreferrer" target="_blank">https://mailman.ucar.edu/mailman/listinfo/ncl-talk</a></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div><span><font color="#888888">Adam Phillips <br></font></span></div><span><font color="#888888">Associate Scientist, </font></span><span><font color="#888888">Climate and Global Dynamics Laboratory, NCAR<br></font></span></div></div><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli/" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> </font></span><span><font color="#888888">303-497-1726 </font></span></div><span><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>