<div dir="ltr">GASM does assume the index set includes every equation in the matrix. It should probably check this as it has pmat.<div><br></div><div>I guess I can add these BC vertices in.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Jun 26, 2016 at 11:20 AM, Mark Adams <span dir="ltr"><<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra">Fande,</div><div class="gmail_extra"><br></div><div class="gmail_extra">An alternative debug path that may be simpler and direct, as it works with master: 'make runex56' in ksp/examples/tutorials in branch mark/gamg-agg-asm.</div><div class="gmail_extra"><br></div><div class="gmail_extra">This runs clean in valgrind (for me), I've added an ISView call to see the data that causes the error, it runs on one processor, uses a 3^3 cell grid (tiny), it exits cleanly with the error:</div><div class="gmail_extra"><br></div><div class="gmail_extra"> ....</div><div class="gmail_extra"><div class="gmail_extra">87 189</div><div class="gmail_extra">88 190</div><div class="gmail_extra">89 191</div></div><div class="gmail_extra"><span class=""><div class="gmail_extra">> [0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</div></span><div class="gmail_extra">> [0]PETSC ERROR: Argument out of range</div><div class="gmail_extra">> [0]PETSC ERROR: Index 144 at 42 location greater than max 144</div><div class="gmail_extra"><div class="gmail_extra">[0]PETSC ERROR: #1 VecScatterCheckIndices_Private() line 39 in /Users/markadams/Codes/petsc/src/vec/vec/utils/vscat.c</div><div class="gmail_extra">[0]PETSC ERROR: #2 VecScatterCreate() line 1227 in /Users/markadams/Codes/petsc/src/vec/vec/utils/vscat.c</div><div class="gmail_extra">[0]PETSC ERROR: #3 PCSetUp_GASM() line 481 in /Users/markadams/Codes/petsc/src/ksp/pc/impls/gasm/gasm.c</div></div><div> ....</div><div><br></div><div>This index 144 is very suspicious to me because there are 144 REAL dofs in this test, 192 "gross" dofs, minus (48) boundary conditions. This problem has just two aggregates with sizes 54 & 90 (=144). (I strip out the BC vertices.)</div><div><br></div><div>Maybe GASM is getting confused because I do not give it domains that cover the entire mesh (I strip out BC vertices). GASM thinks there are 144 equations in this system when in fact there are 192.</div><div><br></div><div>It looks to me like GASM is working a space stripped of BCs but it is using my indices that are in the full space.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Mark</div><div><br></div><div><br></div></font></span></div></div>
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