Hi Barry,
Thanks for getting back to me. The diagnostics were generated when tracing under the VS debugger. To use the option –no_signal_handler, I believe I will need to reconfigure PETSc with this additional option. I will try it now. Thuc From: Barry Smith [mailto:bsm...@petsc.dev] Sent: Tuesday, September 19, 2023 8:24 AM To: Thuc Bui Cc: PETSc users list Subject: Re: [petsc-users] Problem with BLASdot in 3.19.4 Can you run in the Microsoft Visual Studio debugger? Use the additional PETSc option -no_signal_handler It won't show exactly where the SEGV happens but might focus in a bit on it. For example it may be ddot() or ddot_(). Barry On Sep 19, 2023, at 2:04 AM, Thuc Bui <b...@calcreek.com> wrote: Hi Barry, Visual Studio 2022 is the problem! The code linked to Petsc 3.18.6 built with VS 2022 also crashes at the same place. The same errors are shown below. I don’t remember for sure, but I don’t think I was able to configure Petsc 3.19.4 with VS 2019. However, I will still try that next. Thanks for your help, Thuc [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range [0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger [0]PETSC ERROR: or see <https://petsc.org/release/faq/#valgrind> https://petsc.org/release/faq/#valgrind and <https://petsc.org/release/faq/> https://petsc.org/release/faq/ [0]PETSC ERROR: --------------------- Stack Frames ------------------------------------ [0]PETSC ERROR: The line numbers in the error traceback are not always exact. [0]PETSC ERROR: #1 BLASdot() [0]PETSC ERROR: #2 VecNorm_Seq() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\vec\vec\impls\seq\bvec2.c:216 [0]PETSC ERROR: #3 VecNorm() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\vec\vec\interface\rvector.c:237 [0]PETSC ERROR: #4 VecNormalize() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\vec\vec\interface\rvector.c:318 [0]PETSC ERROR: #5 KSPGMRESCycle() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\ksp\ksp\impls\gmres\gmres.c:111 [0]PETSC ERROR: #6 KSPSolve_GMRES() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\ksp\ksp\impls\gmres\gmres.c:228 [0]PETSC ERROR: #7 KSPSolve_Private() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\ksp\ksp\interface\itfunc.c:899 [0]PETSC ERROR: #8 KSPSolve() at D:\Users\bbwannabe\Documents\Petsc\petsc-3.18.6\src\ksp\ksp\interface\itfunc.c:1071 job aborted: [ranks] message [0] application aborted aborting MPI_COMM_WORLD (comm=0x44000000), error 59, comm rank 0 From: petsc-users [ <mailto:petsc-users-boun...@mcs.anl.gov> mailto:petsc-users-boun...@mcs.anl.gov] On Behalf Of Thuc Bui Sent: Monday, September 18, 2023 4:24 PM To: 'Barry Smith' Cc: 'PETSc users list' Subject: Re: [petsc-users] Problem with BLASdot in 3.19.4 Thanks a lot Barry, for getting back to me. Will do what you have suggested, and get back with the results. Best regards, Thuc From: Barry Smith [ <mailto:bsm...@petsc.dev> mailto:bsm...@petsc.dev] Sent: Monday, September 18, 2023 3:43 PM To: Thuc Bui Cc: PETSc users list Subject: Re: [petsc-users] Problem with BLASdot in 3.19.4 Ok, two things are being changed at the same time: the version of PETSc and the version of Visual Studio. Could you please try with the new Visual Studio version but the same older PETSc version? If that works could you try with the old Visual Studio version but the new PETSc version? Barry On Sep 18, 2023, at 6:26 PM, Thuc Bui < <mailto:b...@calcreek.com> b...@calcreek.com> wrote: Dear Petsc users and experts, If someone can direct me how to track this bug, I would really appreciate it. The Petsc DLL library version 3.19.4 was built on Windows 10 with Visual Studio 2022, and with Microsoft MPI 10.1.2 and Intel MKL 2020.3.279. The same code works fine with Petsc 3.18.6 using the same versions of MS MPI and Intel MKL, and built with Visual Studio 2019. When my code calls PetscCall(KSPSolve(...)), it gets to PetscCall(KSPGMRESCycle(...)), PetscCall(VecNormalize(VEC_VV(0), &res)), PetscCall(VecNorm(x, NORM_2, &norm)) and then crashes in VecNorm_Seq() at: PetscCallBLAS("BLASdot", ztmp[type == NORM_1_AND_2] = PetscSqrtReal(PetscRealPart(BLASdot_(&bn, xx, &one, xx, &one)))); I tried to step into BLASdot_, but was unable to. I assume BLASdot_ belong to Intel MKL, and its library does not contain debug information. After the code exits, the errors are shown below the hash line. Should I install the latest Intel MKL to work with Petsc 3.19.4? Many thanks in advance for your help, Thuc Bui Senior R&D Engineer Calabazas Creek Research, Inc (650) 948-5361 ############################################### [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range [0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger [0]PETSC ERROR: or see <https://petsc.org/release/faq/#valgrind> https://petsc.org/release/faq/#valgrind and <https://petsc.org/release/faq/> https://petsc.org/release/faq/ [0]PETSC ERROR: --------------------- Stack Frames ------------------------------------ [0]PETSC ERROR: The line numbers in the error traceback are not always exact. [0]PETSC ERROR: #1 BLASdot() [0]PETSC ERROR: #2 VecNorm_Seq() at D:\Users\bbwannabe\Documents\Petsc\latest\src\vec\vec\impls\seq\bvec2.c:213 [0]PETSC ERROR: #3 VecNorm() at D:\Users\bbwannabe\Documents\Petsc\latest\src\vec\vec\interface\rvector.c:237 [0]PETSC ERROR: #4 VecNormalize() at D:\Users\bbwannabe\Documents\Petsc\latest\src\vec\vec\interface\rvector.c:318 [0]PETSC ERROR: #5 KSPGMRESCycle() at D:\Users\bbwannabe\Documents\Petsc\latest\src\ksp\ksp\impls\gmres\gmres.c:110 [0]PETSC ERROR: #6 KSPSolve_GMRES() at D:\Users\bbwannabe\Documents\Petsc\latest\src\ksp\ksp\impls\gmres\gmres.c:227 [0]PETSC ERROR: #7 KSPSolve_Private() at D:\Users\bbwannabe\Documents\Petsc\latest\src\ksp\ksp\interface\itfunc.c:898 [0]PETSC ERROR: #8 KSPSolve() at D:\Users\bbwannabe\Documents\Petsc\latest\src\ksp\ksp\interface\itfunc.c:1070 job aborted: [ranks] message [0] application aborted aborting MPI_COMM_WORLD (comm=0x44000000), error 59, comm rank 0
