<div dir="ltr">I added that option but the code still gets stuck at the same call MatZeroRows with 3 processors. </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 28, 2023 at 7:23 PM Amneet Bhalla <<a href="mailto:mail2amneet@gmail.com">mail2amneet@gmail.com</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"><div><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 28, 2023 at 6:42 PM Barry Smith <<a href="mailto:bsmith@petsc.dev" target="_blank">bsmith@petsc.dev</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"><div><div><br></div><div> for (int comp = 0; comp < 2; ++comp)</div><div> {</div><div> .......</div><div> for (Box<NDIM>::Iterator bc(bc_coef_box); bc; bc++)</div><div> {</div><div> ......</div><div> if (IBTK::abs_equal_eps(b, 0.0))</div><div> {</div><div> const double diag_value = a;</div><div> ierr = MatZeroRows(mat, 1, &u_dof_index, diag_value, NULL, NULL);</div><div> IBTK_CHKERRQ(ierr);</div><div> }</div><div> }</div><div> }</div><div><br></div><div>In general, this code will not work because each process calls MatZeroRows a different number of times, so it cannot match up with all the processes.</div><div><br></div><div>If u_dof_index is always local to the current process, you can call MatSetOption(mat, MAT_NO_OFF_PROC_ENTRIES,PETSC_TRUE) above the for loop and </div><div>the MatZeroRows will not synchronize across the MPI processes (since it does not need to and you told it that).</div></div></blockquote><div dir="auto"><br></div><div dir="auto">Yes, u_dof_index is going to be local and I put a check on it a few lines before calling MatZeroRows.</div><div dir="auto"><br></div><div dir="auto">Can MatSetOption() be called after the matrix has been assembled?</div><div dir="auto"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto"></div><div><br></div><div>If the u_dof_index will not always be local, then you need, on each process, to list all the u_dof_index for each process in an array and then call MatZeroRows()</div><div>once after the loop so it can exchange the needed information with the other MPI processes to get the row indices to the right place.</div></div><div><div><br></div><div>Barry</div><div><br></div><div><br></div><div><br></div><div><br><blockquote type="cite"><div>On Nov 28, 2023, at 6:44 PM, Amneet Bhalla <<a href="mailto:mail2amneet@gmail.com" target="_blank">mail2amneet@gmail.com</a>> wrote:</div><br><div><div dir="ltr"><div><br></div><div>Hi Folks, </div><div><br></div><div>I am using MatZeroRows() to set Dirichlet boundary conditions. This works fine for the serial run and the solver produces correct results (verified through analytical solution). However, when I run the case in parallel, the simulation gets stuck at MatZeroRows(). My understanding is that this function needs to be called after the MatAssemblyBegin{End}() has been called, and should be called by all processors. Here is that bit of the code which calls MatZeroRows() after the matrix has been assembled</div><br clear="all"><div><a href="https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L724-L801" target="_blank">https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L724-L801</a><br></div><span class="gmail_signature_prefix"><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">I ran the parallel code (on 3 processors) in the debugger (-start_in_debugger). Below is the call stack from the processor that gets stuck</span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix"><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">amneetb</span><span style="font-variant-ligatures:no-common-ligatures">@</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(47,180,29)">APSB-MBP-16:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">~</span><span style="font-variant-ligatures:no-common-ligatures">$ lldb<span> </span>-p 4307<span> </span></span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">(lldb) process attach --pid 4307</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Process 4307 stopped</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">* thread #1, queue = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(47,180,29)">'com.apple.main-thread'</span><span style="font-variant-ligatures:no-common-ligatures">, stop reason = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">signal SIGSTOP</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #0: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x000000018a2d750c</span><span style="font-variant-ligatures:no-common-ligatures"> libsystem_kernel.dylib`__semwait_signal + 8</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">libsystem_kernel.dylib`:</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">-><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x18a2d750c <+8>:<span> </span>b.lo <span> </span>0x18a2d752c <span> </span>; <+40></span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x18a2d7510 <+12>: pacibsp<span> </span></span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x18a2d7514 <+16>: stp<span> </span>x29, x30, [sp, #-0x10]!</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x18a2d7518 <+20>: mov<span> </span>x29, sp</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Target 0: (fo_acoustic_streaming_solver_2d) stopped.</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Executable module set to "/Users/amneetb/Softwares/IBAMR-Git/objs-dbg/tests/IBTK/fo_acoustic_streaming_solver_2d".</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Architecture set to: arm64-apple-macosx-.</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgba(97,97,97,0.91);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">(lldb) </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(242,242,242)">cont</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Process 4307 resuming</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Process 4307 stopped</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">* thread #1, queue = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(47,180,29)">'com.apple.main-thread'</span><span style="font-variant-ligatures:no-common-ligatures">, stop reason = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">signal SIGSTOP</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #0: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000109d281b8</span><span style="font-variant-ligatures:no-common-ligatures"> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 400</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather:</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">-><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x109d281b8 <+400>: ldr<span> </span>w9, [x24]</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x109d281bc <+404>: cmp<span> </span>w8, w9</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x109d281c0 <+408>: <a href="http://b.lt/" target="_blank">b.lt</a> <span> </span>0x109d281a0 <span> </span>; <+376></span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)"><span> </span></span><span style="font-variant-ligatures:no-common-ligatures"> 0x109d281c4 <+412>: bl <span> </span>0x109d28e64 <span> </span>; MPID_Progress_test</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">Target 0: (fo_acoustic_streaming_solver_2d) stopped.</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgba(97,97,97,0.91);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">(lldb) </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(242,242,242)">bt</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures">* thread #1, queue = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(47,180,29)">'com.apple.main-thread'</span><span style="font-variant-ligatures:no-common-ligatures">, stop reason = </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">signal SIGSTOP</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>* frame #0: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000109d281b8</span><span style="font-variant-ligatures:no-common-ligatures"> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 400</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #1: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000109d27d14</span><span style="font-variant-ligatures:no-common-ligatures"> libpmpi.12.dylib`MPIDI_SHM_mpi_barrier + 224</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #2: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000109d27b60</span><span style="font-variant-ligatures:no-common-ligatures"> libpmpi.12.dylib`MPIDI_Barrier_intra_composition_alpha + 44</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #3: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000109d0d490</span><span style="font-variant-ligatures:no-common-ligatures"> libpmpi.12.dylib`MPIR_Barrier + 900</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #4: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x000000010224d030</span><span style="font-variant-ligatures:no-common-ligatures"> libmpi.12.dylib`MPI_Barrier + 684</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #5: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x00000001045ea638</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`PetscCommDuplicate(comm_in=-2080374782, comm_out=0x000000010300bcb0, first_tag=0x000000010300bce4) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">tagm.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">235</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">5</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #6: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x00000001045f2910</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`PetscHeaderCreate_Private(h=0x000000010300bc70, classid=1211227, class_name="PetscSF", descr="Star Forest", mansec="PetscSF", comm=-2080374782, destroy=(libpetsc.3.17.dylib`PetscSFDestroy at sf.c:224), view=(libpetsc.3.17.dylib`PetscSFView at sf.c:841)) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">inherit.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">62</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">3</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #7: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x00000001049cf820</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`PetscSFCreate(comm=-2080374782, sf=0x000000016f911a50) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">sf.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">62</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">3</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #8: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000104cd3024</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`MatZeroRowsMapLocal_Private(A=0x00000001170c1270, N=1, rows=0x000000016f912cb4, nr=0x000000016f911df8, olrows=0x000000016f911e00) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">zerorows.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">36</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">5</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #9: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x000000010504ea50</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`MatZeroRows_MPIAIJ(A=0x00000001170c1270, N=1, rows=0x000000016f912cb4, diag=1, x=0x0000000000000000, b=0x0000000000000000) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">mpiaij.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">768</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">3</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #10: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000104d95fac</span><span style="font-variant-ligatures:no-common-ligatures"> libpetsc.3.17.dylib`MatZeroRows(mat=0x00000001170c1270, numRows=1, rows=0x000000016f912cb4, diag=1, x=0x0000000000000000, b=0x0000000000000000) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">matrix.c</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">5935</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">3</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #11: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x000000010067d320</span><span style="font-variant-ligatures:no-common-ligatures"> fo_acoustic_streaming_solver_2d`IBAMR::AcousticStreamingPETScMatUtilities::constructPatchLevelFOAcousticStreamingOp(mat=0x000000016f91c178, omega=1, sound_speed=1, rho_idx=3, mu_idx=2, lambda_idx=4, u_bc_coefs=0x000000016f91c3a8, data_time=NaN, num_dofs_per_proc=size=3, u_dof_index_idx=27, p_dof_index_idx=28, patch_level=Pointer<SAMRAI::hier::PatchLevel<2> > @ 0x000000016f914ed0, mu_interp_type=VC_HARMONIC_INTERP) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">AcousticStreamingPETScMatUtilities.cpp</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">794</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">36</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #12: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000100694bdc</span><span style="font-variant-ligatures:no-common-ligatures"> fo_acoustic_streaming_solver_2d`IBAMR::FOAcousticStreamingPETScLevelSolver::initializeSolverStateSpecialized(this=0x000000016f91c028, x=0x000000016f91d788, (null)=0x000000016f91d690) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">FOAcousticStreamingPETScLevelSolver.cpp</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">149</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">5</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #13: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x000000010083232c</span><span style="font-variant-ligatures:no-common-ligatures"> fo_acoustic_streaming_solver_2d`IBTK::PETScLevelSolver::initializeSolverState(this=0x000000016f91c028, x=0x000000016f91d788, b=0x000000016f91d690) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">PETScLevelSolver.cpp</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">340</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">5</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #14: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x00000001004eb230</span><span style="font-variant-ligatures:no-common-ligatures"> fo_acoustic_streaming_solver_2d`main(argc=11, argv=0x000000016f91f460) at </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(46,174,187)">fo_acoustic_streaming_solver.cpp</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">400</span><span style="font-variant-ligatures:no-common-ligatures">:</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">22</span></div><div style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:18px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span style="font-variant-ligatures:no-common-ligatures"><span> </span>frame #15: </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(159,160,28)">0x0000000189fbbf28</span><span style="font-variant-ligatures:no-common-ligatures"> dyld`start + 2236</span></div></span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">Any suggestions on how to avoid this barrier? Here are all MAT options I am using (in the debug mode), if that is helpful:</span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix"><a href="https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L453-L458" target="_blank">https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L453-L458</a><br></span></div><div><span class="gmail_signature_prefix"><br></span></div><div><span class="gmail_signature_prefix">Thanks, </span></div>-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>--Amneet <br><br></div><div><br></div><div><br></div></div></div></div>
</div></blockquote></div><br></div></blockquote></div></div>
</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>--Amneet <br><br></div><div><br></div><div><br></div></div></div>