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Hello, <br>
I don't think that I set preallocation values when I created the matrix, would you please have look at my code. It is just the petsc related part from my code.<br>
I was able to fix some of the error messages. Now I have a new set of error messages related to the KSP solver (attached)<br>
<br>
I appreciate your help</div>
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Sawsan</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Mark Adams <mfadams@lbl.gov><br>
<b>Sent:</b> Wednesday, December 20, 2023 6:44 AM<br>
<b>To:</b> Shatanawi, Sawsan Muhammad <sawsan.shatanawi@wsu.edu><br>
<b>Cc:</b> petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov><br>
<b>Subject:</b> Re: [petsc-users] Help with Integrating PETSc into Fortran Groundwater Flow Simulation Code</font>
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<span style="font-size:10.0pt; color:black"><b>[EXTERNAL EMAIL]</span></b></p>
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<div dir="ltr">Did you set preallocation values when you created the matrix?
<div>Don't do that.</div>
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<br>
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<div dir="ltr" class="x_gmail_attr">On Wed, Dec 20, 2023 at 9:36 AM Shatanawi, Sawsan Muhammad <<a href="mailto:sawsan.shatanawi@wsu.edu">sawsan.shatanawi@wsu.edu</a>> wrote:<br>
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<div dir="ltr">Hello, </div>
<div dir="ltr"><br>
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<div dir="ltr">I am trying to create a sparse matrix( which is as I believe a zero matrix) then adding some nonzero elements to it over a loop, then assembling it </div>
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Get <a href="https://urldefense.com/v3/__https://aka.ms/o0ukef__;!!JmPEgBY0HMszNaDT!uUJ_jeYf45gcXDGR_PeMjhU7hbd_fKcXJPn0pM9eb-YQihKNYuXMYM9x-hglsbXsCFIwNBWgHXdetHODupsOloE$" originalsrc="https://urldefense.com/v3/__https://aka.ms/o0ukef__;!!JmPEgBY0HMszNaDT!uUJ_jeYf45gcXDGR_PeMjhU7hbd_fKcXJPn0pM9eb-YQihKNYuXMYM9x-hglsbXsCFIwNBWgHXdetHODupsOloE$" shash="F+oAf9PmtZs67KR1BloAoNOwM/azCkZ0dUvnvwdPIrbT6fd6E9rQX5NduQVn48FvKg7tyb9HRX14+6IvE1aFFZtXQoWMAbmCGxzZ4VxDVNP7Uw0Thh5YorNtJ/0rAjxkRLPzY3zXpzHpBe3iCjJE5CJRaP1kP5hL2GF/i3nPvAU=" target="_blank">
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<div id="x_m_-677654408871201876divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif"><b>From:</b> Mark Adams <<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>><br>
<b>Sent:</b> Wednesday, December 20, 2023 2:48 AM<br>
<b>To:</b> Shatanawi, Sawsan Muhammad <<a href="mailto:sawsan.shatanawi@wsu.edu" target="_blank">sawsan.shatanawi@wsu.edu</a>><br>
<b>Cc:</b> <a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a> <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>><br>
<b>Subject:</b> Re: [petsc-users] Help with Integrating PETSc into Fortran Groundwater Flow Simulation Code
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<span style="font-size:10pt; color:black"><b>[EXTERNAL EMAIL]</b></span></p>
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<div dir="ltr">I am guessing that you are creating a matrix, adding to it, finalizing it ("assembly"), and then adding to it again, which is fine, but you are adding new non-zeros to the sparsity pattern.
<div>If this is what you want then you can tell the matrix to let you do that.</div>
<div>Otherwise you have a bug.</div>
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<div>Mark</div>
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<div dir="ltr" class="x_gmail_attr">On Tue, Dec 19, 2023 at 9:50 PM Shatanawi, Sawsan Muhammad via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov" target="_blank">petsc-users@mcs.anl.gov</a>> wrote:<br>
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Hello everyone,
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<div>I hope this email finds you well.</div>
<div><span><br>
</span></div>
<div><span> My Name is Sawsan Shatanawi,</span><span><span style="display:inline; color:rgb(55,65,81)"> and I am currently working on developing a Fortran code for simulating groundwater flow in a 3D system. The code involves solving a nonlinear system, and
I have created the matrix to be solved using the PCG solver and Picard iteration. However, </span></span><span>when I tried to assign it as a PETSc matrix I started getting a lot of error messages.</span></div>
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<div>I am kindly asking if someone can help me,<span style="display:inline; color:rgb(55,65,81)"> I would be happy to share my code with him/her.</span></div>
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<div><span>Please find the attached file contains a list of errors I have gotten</span></div>
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<div><span style="color:rgb(55,65,81)">Thank you in advance for your time and assistance.</span><br>
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Best regards,</p>
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Sawsan</p>
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