[petsc-users] MPI barrier issue using MatZeroRows
Amneet Bhalla
mail2amneet at gmail.com
Wed Nov 29 17:48:49 CST 2023
Thanks Barry! I tried that and it seems to be working. This is what I did.
It would be great if you could take a look at it and let me know if this is
what you had in mind.
1. Collected Dirichlet rows locally
https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L731
https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L797
2. MPI_allgatherv Dirichlet rows
https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L805-L810
3. Called the MatZeroRows function
https://github.com/IBAMR/IBAMR/blob/amneetb/acoustically-driven-flows/src/acoustic_streaming/AcousticStreamingPETScMatUtilities.cpp#L812-L814
On Wed, Nov 29, 2023 at 11:32 AM Barry Smith <bsmith at petsc.dev> wrote:
>
>
> On Nov 29, 2023, at 2:11 PM, Matthew Knepley <knepley at gmail.com> wrote:
>
> On Wed, Nov 29, 2023 at 1:55 PM Amneet Bhalla <mail2amneet at gmail.com>
> wrote:
>
>> So the code logic is after the matrix is assembled, I iterate over all
>> distributed patches in the domain to see which of the patch is abutting a
>> Dirichlet boundary. Depending upon which patch abuts a physical and
>> Dirichlet boundary, a processor will call this routine. However, that same
>> processor is “owning” that DoF, which would be on its diagonal.
>>
>> I think Barry already mentioned this is not going to work unless I use
>> the flag to not communicate explicitly. However, that flag is not working
>> as it should over here for some reason.
>>
>
> Oh, I do not think that is right.
>
> Barry, when I look at the code, MPIU_Allreduce is always going to be
> called to fix up the nonzero_state. Am I wrong about that?
>
>
> No, you are correct. I missed that in my earlier look. Setting those
> flags reduce the number of MPI reductions but does not eliminate them
> completely.
>
> MatZeroRows is collective (as its manual page indicates) so you have to
> do the second thing I suggested. Inside your for loop construct an array
> containing all the local
> rows being zeroed and then make a single call by all MPI processes to
> MatZeroRows(). Note this is a small change of just a handful of lines of
> code.
>
> Barry
>
>
> Thanks,
>
> Matt
>
>
>> I can always change the matrix coefficients for Dirichlet rows during
>> MatSetValues. However, that would lengthen my code and I was trying to
>> avoid that.
>>
>> On Wed, Nov 29, 2023 at 10:02 AM Matthew Knepley <knepley at gmail.com>
>> wrote:
>>
>>> 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
>>>>>>>>
>>>>>>>>
>
> --
> 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/>
>
>
>
--
--Amneet
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20231129/4bd782d6/attachment-0001.html>
More information about the petsc-users
mailing list