[petsc-users] MPI barrier issue using MatZeroRows
Matthew Knepley
knepley at gmail.com
Wed Nov 29 12:02:30 CST 2023
On Wed, Nov 29, 2023 at 12:30 PM Amneet Bhalla <mail2amneet at gmail.com>
wrote:
> Ok, I added both, but it still hangs. Here, is bt from all three tasks:
>
It looks like two processes are calling AllReduce, but one is not. Are all
procs not calling MatZeroRows?
Thanks,
Matt
> Task 1:
>
> amneetb at APSB-MacBook-Pro-16:~$ lldb -p 44691
>
> (lldb) process attach --pid 44691
>
> Process 44691 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000018a2d750c libsystem_kernel.dylib`__semwait_signal
> + 8
>
> libsystem_kernel.dylib`:
>
> -> 0x18a2d750c <+8>: b.lo 0x18a2d752c ; <+40>
>
> 0x18a2d7510 <+12>: pacibsp
>
> 0x18a2d7514 <+16>: stp x29, x30, [sp, #-0x10]!
>
> 0x18a2d7518 <+20>: mov x29, sp
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> Executable module set to
> "/Users/amneetb/Softwares/IBAMR-Git/objs-dbg/tests/IBTK/fo_acoustic_streaming_solver_2d".
>
> Architecture set to: arm64-apple-macosx-.
>
> (lldb) cont
>
> Process 44691 resuming
>
> Process 44691 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000010ba40b60
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_release + 752
>
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_release:
>
> -> 0x10ba40b60 <+752>: add w8, w8, #0x1
>
> 0x10ba40b64 <+756>: ldr w9, [x22]
>
> 0x10ba40b68 <+760>: cmp w8, w9
>
> 0x10ba40b6c <+764>: b.lt 0x10ba40b4c ; <+732>
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> (lldb) bt
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> * frame #0: 0x000000010ba40b60
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_release + 752
>
> frame #1: 0x000000010ba48528
> libpmpi.12.dylib`MPIDI_POSIX_mpi_allreduce_release_gather + 1088
>
> frame #2: 0x000000010ba47964
> libpmpi.12.dylib`MPIDI_Allreduce_intra_composition_gamma + 368
>
> frame #3: 0x000000010ba35e78 libpmpi.12.dylib`MPIR_Allreduce + 1588
>
> frame #4: 0x0000000103f587dc libmpi.12.dylib`MPI_Allreduce + 2280
>
> frame #5: 0x0000000106d67650
> libpetsc.3.17.dylib`MatZeroRows_MPIAIJ(A=0x0000000105846470, N=1,
> rows=0x000000016dbfa9f4, diag=1, x=0x0000000000000000,
> b=0x0000000000000000) at mpiaij.c:827:3
>
> frame #6: 0x0000000106aadfac
> libpetsc.3.17.dylib`MatZeroRows(mat=0x0000000105846470, numRows=1,
> rows=0x000000016dbfa9f4, diag=1, x=0x0000000000000000,
> b=0x0000000000000000) at matrix.c:5935:3
>
> frame #7: 0x00000001023952d0
> fo_acoustic_streaming_solver_2d`IBAMR::AcousticStreamingPETScMatUtilities::constructPatchLevelFOAcousticStreamingOp(mat=0x000000016dc04168,
> omega=1, sound_speed=1, rho_idx=3, mu_idx=2, lambda_idx=4,
> u_bc_coefs=0x000000016dc04398, 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> > @ 0x000000016dbfcec0,
> mu_interp_type=VC_HARMONIC_INTERP) at
> AcousticStreamingPETScMatUtilities.cpp:799:36
>
> frame #8: 0x00000001023acb8c
> fo_acoustic_streaming_solver_2d`IBAMR::FOAcousticStreamingPETScLevelSolver::initializeSolverStateSpecialized(this=0x000000016dc04018,
> x=0x000000016dc05778, (null)=0x000000016dc05680) at
> FOAcousticStreamingPETScLevelSolver.cpp:149:5
>
> frame #9: 0x000000010254a2dc
> fo_acoustic_streaming_solver_2d`IBTK::PETScLevelSolver::initializeSolverState(this=0x000000016dc04018,
> x=0x000000016dc05778, b=0x000000016dc05680) at PETScLevelSolver.cpp:340:5
>
> frame #10: 0x0000000102202e5c
> fo_acoustic_streaming_solver_2d`main(argc=11, argv=0x000000016dc07450) at
> fo_acoustic_streaming_solver.cpp:400:22
>
> frame #11: 0x0000000189fbbf28 dyld`start + 2236
>
> (lldb)
>
>
> Task 2:
>
> amneetb at APSB-MacBook-Pro-16:~$ lldb -p 44692
>
> (lldb) process attach --pid 44692
>
> Process 44692 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000018a2d750c libsystem_kernel.dylib`__semwait_signal
> + 8
>
> libsystem_kernel.dylib`:
>
> -> 0x18a2d750c <+8>: b.lo 0x18a2d752c ; <+40>
>
> 0x18a2d7510 <+12>: pacibsp
>
> 0x18a2d7514 <+16>: stp x29, x30, [sp, #-0x10]!
>
> 0x18a2d7518 <+20>: mov x29, sp
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> Executable module set to
> "/Users/amneetb/Softwares/IBAMR-Git/objs-dbg/tests/IBTK/fo_acoustic_streaming_solver_2d".
>
> Architecture set to: arm64-apple-macosx-.
>
> (lldb) cont
>
> Process 44692 resuming
>
> Process 44692 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000010e5a022c
> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 516
>
> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather:
>
> -> 0x10e5a022c <+516>: ldr x10, [x19, #0x4e8]
>
> 0x10e5a0230 <+520>: cmp x9, x10
>
> 0x10e5a0234 <+524>: b.hs 0x10e5a0254 ; <+556>
>
> 0x10e5a0238 <+528>: add w8, w8, #0x1
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> (lldb) bt
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> * frame #0: 0x000000010e5a022c
> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 516
>
> frame #1: 0x000000010e59fd14 libpmpi.12.dylib`MPIDI_SHM_mpi_barrier +
> 224
>
> frame #2: 0x000000010e59fb60
> libpmpi.12.dylib`MPIDI_Barrier_intra_composition_alpha + 44
>
> frame #3: 0x000000010e585490 libpmpi.12.dylib`MPIR_Barrier + 900
>
> frame #4: 0x0000000106ac5030 libmpi.12.dylib`MPI_Barrier + 684
>
> frame #5: 0x0000000108e62638
> libpetsc.3.17.dylib`PetscCommDuplicate(comm_in=1140850688,
> comm_out=0x00000001408ae4b0, first_tag=0x00000001408ae4e4) at tagm.c:235:5
>
> frame #6: 0x0000000108e6a910
> libpetsc.3.17.dylib`PetscHeaderCreate_Private(h=0x00000001408ae470,
> classid=1211228, class_name="KSP", descr="Krylov Method", mansec="KSP",
> comm=1140850688, destroy=(libpetsc.3.17.dylib`KSPDestroy at itfunc.c:1418),
> view=(libpetsc.3.17.dylib`KSPView at itcreate.c:113)) at inherit.c:62:3
>
> frame #7: 0x000000010aa28010
> libpetsc.3.17.dylib`KSPCreate(comm=1140850688, inksp=0x000000016b0a4160) at
> itcreate.c:679:3
>
> frame #8: 0x00000001050aa2f4
> fo_acoustic_streaming_solver_2d`IBTK::PETScLevelSolver::initializeSolverState(this=0x000000016b0a4018,
> x=0x000000016b0a5778, b=0x000000016b0a5680) at PETScLevelSolver.cpp:344:12
>
> frame #9: 0x0000000104d62e5c
> fo_acoustic_streaming_solver_2d`main(argc=11, argv=0x000000016b0a7450) at
> fo_acoustic_streaming_solver.cpp:400:22
>
> frame #10: 0x0000000189fbbf28 dyld`start + 2236
>
> (lldb)
>
>
> Task 3:
>
> amneetb at APSB-MacBook-Pro-16:~$ lldb -p 44693
>
> (lldb) process attach --pid 44693
>
> Process 44693 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000018a2d750c libsystem_kernel.dylib`__semwait_signal
> + 8
>
> libsystem_kernel.dylib`:
>
> -> 0x18a2d750c <+8>: b.lo 0x18a2d752c ; <+40>
>
> 0x18a2d7510 <+12>: pacibsp
>
> 0x18a2d7514 <+16>: stp x29, x30, [sp, #-0x10]!
>
> 0x18a2d7518 <+20>: mov x29, sp
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> Executable module set to
> "/Users/amneetb/Softwares/IBAMR-Git/objs-dbg/tests/IBTK/fo_acoustic_streaming_solver_2d".
>
> Architecture set to: arm64-apple-macosx-.
>
> (lldb) cont
>
> Process 44693 resuming
>
> Process 44693 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> frame #0: 0x000000010e59c68c
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_gather + 952
>
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_gather:
>
> -> 0x10e59c68c <+952>: ldr w9, [x21]
>
> 0x10e59c690 <+956>: cmp w8, w9
>
> 0x10e59c694 <+960>: b.lt 0x10e59c670 ; <+924>
>
> 0x10e59c698 <+964>: bl 0x10e59ce64 ;
> MPID_Progress_test
>
> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>
> (lldb) bt
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
> * frame #0: 0x000000010e59c68c
> libpmpi.12.dylib`MPIDI_POSIX_mpi_release_gather_gather + 952
>
> frame #1: 0x000000010e5a44bc
> libpmpi.12.dylib`MPIDI_POSIX_mpi_allreduce_release_gather + 980
>
> frame #2: 0x000000010e5a3964
> libpmpi.12.dylib`MPIDI_Allreduce_intra_composition_gamma + 368
>
> frame #3: 0x000000010e591e78 libpmpi.12.dylib`MPIR_Allreduce + 1588
>
> frame #4: 0x0000000106ab47dc libmpi.12.dylib`MPI_Allreduce + 2280
>
> frame #5: 0x00000001098c3650
> libpetsc.3.17.dylib`MatZeroRows_MPIAIJ(A=0x0000000136862270, N=1,
> rows=0x000000016b09e9f4, diag=1, x=0x0000000000000000,
> b=0x0000000000000000) at mpiaij.c:827:3
>
> frame #6: 0x0000000109609fac
> libpetsc.3.17.dylib`MatZeroRows(mat=0x0000000136862270, numRows=1,
> rows=0x000000016b09e9f4, diag=1, x=0x0000000000000000,
> b=0x0000000000000000) at matrix.c:5935:3
>
> frame #7: 0x0000000104ef12d0
> fo_acoustic_streaming_solver_2d`IBAMR::AcousticStreamingPETScMatUtilities::constructPatchLevelFOAcousticStreamingOp(mat=0x000000016b0a8168,
> omega=1, sound_speed=1, rho_idx=3, mu_idx=2, lambda_idx=4,
> u_bc_coefs=0x000000016b0a8398, 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> > @ 0x000000016b0a0ec0,
> mu_interp_type=VC_HARMONIC_INTERP) at
> AcousticStreamingPETScMatUtilities.cpp:799:36
>
> frame #8: 0x0000000104f08b8c
> fo_acoustic_streaming_solver_2d`IBAMR::FOAcousticStreamingPETScLevelSolver::initializeSolverStateSpecialized(this=0x000000016b0a8018,
> x=0x000000016b0a9778, (null)=0x000000016b0a9680) at
> FOAcousticStreamingPETScLevelSolver.cpp:149:5
>
> frame #9: 0x00000001050a62dc
> fo_acoustic_streaming_solver_2d`IBTK::PETScLevelSolver::initializeSolverState(this=0x000000016b0a8018,
> x=0x000000016b0a9778, b=0x000000016b0a9680) at PETScLevelSolver.cpp:340:5
>
> frame #10: 0x0000000104d5ee5c
> fo_acoustic_streaming_solver_2d`main(argc=11, argv=0x000000016b0ab450) at
> fo_acoustic_streaming_solver.cpp:400:22
>
> frame #11: 0x0000000189fbbf28 dyld`start + 2236
>
> (lldb)
>
>
> On Wed, Nov 29, 2023 at 7:22 AM Barry Smith <bsmith at petsc.dev> wrote:
>
>>
>>
>> On Nov 29, 2023, at 1:16 AM, Amneet Bhalla <mail2amneet at gmail.com> wrote:
>>
>> BTW, I think you meant using MatSetOption(mat,
>> *MAT_NO_OFF_PROC_ZERO_ROWS*, PETSC_TRUE)
>>
>>
>> Yes
>>
>> instead ofMatSetOption(mat, *MAT_NO_OFF_PROC_ENTRIES*, PETSC_TRUE) ??
>>
>>
>> Please try setting both flags.
>>
>> However, that also did not help to overcome the MPI Barrier issue.
>>
>>
>> If there is still a problem please trap all the MPI processes when they
>> hang in the debugger and send the output from using bt on all of them. This
>> way
>> we can see the different places the different MPI processes are stuck at.
>>
>>
>>
>> On Tue, Nov 28, 2023 at 9:57 PM Amneet Bhalla <mail2amneet at gmail.com>
>> wrote:
>>
>>> I added that option but the code still gets stuck at the same call
>>> MatZeroRows with 3 processors.
>>>
>>> On Tue, Nov 28, 2023 at 7:23 PM Amneet Bhalla <mail2amneet at gmail.com>
>>> wrote:
>>>
>>>>
>>>>
>>>> On Tue, Nov 28, 2023 at 6:42 PM Barry Smith <bsmith at petsc.dev> wrote:
>>>>
>>>>>
>>>>> for (int comp = 0; comp < 2; ++comp)
>>>>> {
>>>>> .......
>>>>> for (Box<NDIM>::Iterator bc(bc_coef_box); bc; bc++)
>>>>> {
>>>>> ......
>>>>> if (IBTK::abs_equal_eps(b, 0.0))
>>>>> {
>>>>> const double diag_value = a;
>>>>> ierr = MatZeroRows(mat, 1, &u_dof_index,
>>>>> diag_value, NULL, NULL);
>>>>> IBTK_CHKERRQ(ierr);
>>>>> }
>>>>> }
>>>>> }
>>>>>
>>>>> 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.
>>>>>
>>>>> 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
>>>>> the MatZeroRows will not synchronize across the MPI processes (since
>>>>> it does not need to and you told it that).
>>>>>
>>>>
>>>> Yes, u_dof_index is going to be local and I put a check on it a few
>>>> lines before calling MatZeroRows.
>>>>
>>>> Can MatSetOption() be called after the matrix has been assembled?
>>>>
>>>>
>>>>> 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()
>>>>> 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.
>>>>>
>>>>> Barry
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Nov 28, 2023, at 6:44 PM, Amneet Bhalla <mail2amneet at gmail.com>
>>>>> wrote:
>>>>>
>>>>>
>>>>> Hi Folks,
>>>>>
>>>>> 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
>>>>>
>>>>>
>>>>> https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L724-L801
>>>>>
>>>>> 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
>>>>>
>>>>> amneetb at APSB-MBP-16:~$ lldb -p 4307
>>>>> (lldb) process attach --pid 4307
>>>>> Process 4307 stopped
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = signal
>>>>> SIGSTOP
>>>>> frame #0: 0x000000018a2d750c
>>>>> libsystem_kernel.dylib`__semwait_signal + 8
>>>>> libsystem_kernel.dylib`:
>>>>> -> 0x18a2d750c <+8>: b.lo 0x18a2d752c ; <+40>
>>>>> 0x18a2d7510 <+12>: pacibsp
>>>>> 0x18a2d7514 <+16>: stp x29, x30, [sp, #-0x10]!
>>>>> 0x18a2d7518 <+20>: mov x29, sp
>>>>> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>>>>> Executable module set to
>>>>> "/Users/amneetb/Softwares/IBAMR-Git/objs-dbg/tests/IBTK/fo_acoustic_streaming_solver_2d".
>>>>> Architecture set to: arm64-apple-macosx-.
>>>>> (lldb) cont
>>>>> Process 4307 resuming
>>>>> Process 4307 stopped
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = signal
>>>>> SIGSTOP
>>>>> frame #0: 0x0000000109d281b8
>>>>> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 400
>>>>> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather:
>>>>> -> 0x109d281b8 <+400>: ldr w9, [x24]
>>>>> 0x109d281bc <+404>: cmp w8, w9
>>>>> 0x109d281c0 <+408>: b.lt 0x109d281a0 ; <+376>
>>>>> 0x109d281c4 <+412>: bl 0x109d28e64 ;
>>>>> MPID_Progress_test
>>>>> Target 0: (fo_acoustic_streaming_solver_2d) stopped.
>>>>> (lldb) bt
>>>>> * thread #1, queue = 'com.apple.main-thread', stop reason = signal
>>>>> SIGSTOP
>>>>> * frame #0: 0x0000000109d281b8
>>>>> libpmpi.12.dylib`MPIDI_POSIX_mpi_barrier_release_gather + 400
>>>>> frame #1: 0x0000000109d27d14
>>>>> libpmpi.12.dylib`MPIDI_SHM_mpi_barrier + 224
>>>>> frame #2: 0x0000000109d27b60
>>>>> libpmpi.12.dylib`MPIDI_Barrier_intra_composition_alpha + 44
>>>>> frame #3: 0x0000000109d0d490 libpmpi.12.dylib`MPIR_Barrier + 900
>>>>> frame #4: 0x000000010224d030 libmpi.12.dylib`MPI_Barrier + 684
>>>>> frame #5: 0x00000001045ea638
>>>>> libpetsc.3.17.dylib`PetscCommDuplicate(comm_in=-2080374782,
>>>>> comm_out=0x000000010300bcb0, first_tag=0x000000010300bce4) at tagm.c:
>>>>> 235:5
>>>>> frame #6: 0x00000001045f2910
>>>>> 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 inherit.c:62:3
>>>>> frame #7: 0x00000001049cf820
>>>>> libpetsc.3.17.dylib`PetscSFCreate(comm=-2080374782, sf=0x000000016f911a50)
>>>>> at sf.c:62:3
>>>>> frame #8: 0x0000000104cd3024
>>>>> libpetsc.3.17.dylib`MatZeroRowsMapLocal_Private(A=0x00000001170c1270, N=1,
>>>>> rows=0x000000016f912cb4, nr=0x000000016f911df8, olrows=0x000000016f911e00)
>>>>> at zerorows.c:36:5
>>>>> frame #9: 0x000000010504ea50
>>>>> libpetsc.3.17.dylib`MatZeroRows_MPIAIJ(A=0x00000001170c1270, N=1,
>>>>> rows=0x000000016f912cb4, diag=1, x=0x0000000000000000,
>>>>> b=0x0000000000000000) at mpiaij.c:768:3
>>>>> frame #10: 0x0000000104d95fac
>>>>> libpetsc.3.17.dylib`MatZeroRows(mat=0x00000001170c1270, numRows=1,
>>>>> rows=0x000000016f912cb4, diag=1, x=0x0000000000000000,
>>>>> b=0x0000000000000000) at matrix.c:5935:3
>>>>> frame #11: 0x000000010067d320
>>>>> 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
>>>>> AcousticStreamingPETScMatUtilities.cpp:794:36
>>>>> frame #12: 0x0000000100694bdc
>>>>> fo_acoustic_streaming_solver_2d`IBAMR::FOAcousticStreamingPETScLevelSolver::initializeSolverStateSpecialized(this=0x000000016f91c028,
>>>>> x=0x000000016f91d788, (null)=0x000000016f91d690) at
>>>>> FOAcousticStreamingPETScLevelSolver.cpp:149:5
>>>>> frame #13: 0x000000010083232c
>>>>> fo_acoustic_streaming_solver_2d`IBTK::PETScLevelSolver::initializeSolverState(this=0x000000016f91c028,
>>>>> x=0x000000016f91d788, b=0x000000016f91d690) at PETScLevelSolver.cpp:
>>>>> 340:5
>>>>> frame #14: 0x00000001004eb230
>>>>> fo_acoustic_streaming_solver_2d`main(argc=11, argv=0x000000016f91f460) at
>>>>> fo_acoustic_streaming_solver.cpp:400:22
>>>>> frame #15: 0x0000000189fbbf28 dyld`start + 2236
>>>>>
>>>>>
>>>>> Any suggestions on how to avoid this barrier? Here are all MAT options
>>>>> I am using (in the debug mode), if that is helpful:
>>>>>
>>>>>
>>>>> https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L453-L458
>>>>>
>>>>> Thanks,
>>>>> --
>>>>> --Amneet
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>> --
>>> --Amneet
>>>
>>>
>>>
>>>
>>
>> --
>> --Amneet
>>
>>
>>
>>
>>
>
> --
> --Amneet
>
>
>
>
--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20231129/fcc5d2ca/attachment-0001.html>
More information about the petsc-users
mailing list