<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif">Thanks for the answer.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif"><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">So, when I run the code with "mpiexec -n 2 ./ex6" or "mpiexec -n 4 ./ex6" shouldn't it spit out </div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">the error "This is a uniprocessor example only!"? </div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">But it didn't do that rather run the code 2/4 times.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif"><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">Thanks.</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">Sincerely,</div><div class="gmail_default" style="font-family:comic sans ms,sans-serif">Huq</div></div><br><div class="gmail_quote"><div dir="ltr">On Sat, Nov 17, 2018 at 1:12 PM Fazlul Huq <<a href="mailto:huq2090@gmail.com">huq2090@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:"comic sans ms",sans-serif">Hello PETSc developers,</div><div class="gmail_default" style="font-family:"comic sans ms",sans-serif"><br></div><div class="gmail_default" style="font-family:"comic sans ms",sans-serif">In example 6 or vec section I don't understand this line:</div><div class="gmail_default"><font face="comic sans ms, sans-serif">if (size != 1) SETERRQ(PETSC_COMM_SELF,1,"This is a uniprocessor example only!");</font><br></div><div class="gmail_default"><font face="comic sans ms, sans-serif"><br></font></div><div class="gmail_default"><font face="comic sans ms, sans-serif">I tried to run the code with "mpiexec -n 2 ./ex6" or "mpiexec -n 4 ./ex6" or even "mpiexec -n 1 ./ex6" it the code runs properly.</font></div><div class="gmail_default"><font face="comic sans ms, sans-serif"><br></font></div><div class="gmail_default"><font face="comic sans ms, sans-serif">Thanks.</font></div><div class="gmail_default"><font face="comic sans ms, sans-serif"><br></font></div><div class="gmail_default"><font face="comic sans ms, sans-serif">Sincerely,</font></div><div class="gmail_default"><font face="comic sans ms, sans-serif">Huq</font></div><div><br></div>-- <br><div dir="ltr" class="m_2318007667578293952gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><br><div><font face="comic sans ms, sans-serif">Fazlul Huq</font></div><div><font face="comic sans ms, sans-serif">Graduate Research Assistant</font></div><div><font face="comic sans ms, sans-serif">Department of Nuclear, Plasma & Radiological Engineering (NPRE)</font></div><div><font face="comic sans ms, sans-serif">University of Illinois at Urbana-Champaign (UIUC)</font></div><div><font face="comic sans ms, sans-serif">E-mail: <a href="mailto:huq2090@gmail.com" target="_blank">huq2090@gmail.com</a></font></div></div></div></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><br><div><font face="comic sans ms, sans-serif">Fazlul Huq</font></div><div><font face="comic sans ms, sans-serif">Graduate Research Assistant</font></div><div><font face="comic sans ms, sans-serif">Department of Nuclear, Plasma & Radiological Engineering (NPRE)</font></div><div><font face="comic sans ms, sans-serif">University of Illinois at Urbana-Champaign (UIUC)</font></div><div><font face="comic sans ms, sans-serif">E-mail: <a href="mailto:huq2090@gmail.com" target="_blank">huq2090@gmail.com</a></font></div></div></div></div></div></div></div>