<div dir="ltr"><div>Dear All,</div><div>Greetings from India.</div><div><br></div><div>I am new to petsc4py. I was trying out the example on slides 18, and 19 at</div><div><br></div><div><a href="https://urldefense.us/v3/__https://www.bu.edu/pasi/files/2011/01/Lisandro-Dalcin-petsc4py.pdf__;!!G_uCfscf7eWS!ehNmddsrNhTg2K1fvJVZhjNXm7zt2pz25zK1Th5iKAIPiWNt4cl3DL63Z2e4zzZ0-e1Ff4Xg7-UB4QGl2eBfEVBffcVp$">https://www.bu.edu/pasi/files/2011/01/Lisandro-Dalcin-petsc4py.pdf</a></div><div><br></div><div>However, I get a zero vector for the solution `x`.</div><div><br></div><div>I am using petsc4py 3.21.3 on Linux.</div><div><br></div><div>Any help would be appreciated.</div><div><br></div><div>With regards</div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr">Vaishak Prasad</div><div><span style="background-color:rgb(255,255,255);color:rgb(102,102,102)">Post Doctoral Fellow</span><br></div><div dir="ltr"><div><div><font color="#888888">Astrophysical Relativity Group<br>
</font></div><font color="#888888">International Center for Theoretical Sciences<br>
Tata Institute of Fundamental Research<br>
Survey No. 151, Shivakote, Hesaraghatta Hobli,<br>Bengaluru, Karnataka, India, <br>Earth, Solar system, </font></div><div><font color="#888888">Milky Way Galaxy, </font><span style="color:rgb(136,136,136)">The Local Group</span></div></div></div></div></div>