[petsc-users] An internal abort when perform LU decomposition.

[Yang Zongze]

Hi,   I am solving a Linear system with LU factorization. But failed with the following error. Is there some suggestions on debugging this error? Thanks!   The configure.log of PETSc is attached!   ``` Assertion failed in file ./src/include/mpir_request.h at line 446: req != NULL /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x2e6072) [0x7fd51f801072] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x20a8a8) [0x7fd51f7258a8] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(+0x2a0318) [0x7fd51f7bb318] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpi.so.12(MPI_Isend+0x498) [0x7fd51f600ae8] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libmpifort.so.12(PMPI_ISEND+0x51) [0x7fd51cf0acd1] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(__dmumps_buf_MOD_dmumps_buf_send_contrib_type3+0x145b) [0x7fd520b1011d] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_buf_send_contrib_type3_i_+0xb8) [0x7fd520af584c] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_build_and_send_cb_root_+0x167e) [0x7fd520b6252c] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_stack_+0xf00) [0x7fd520c60c88] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(__dmumps_fac_par_m_MOD_dmumps_fac_par+0xade) [0x7fd520c56e27] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_par_i_+0x216) [0x7fd520c000c2] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_b_+0x975) [0x7fd520c00a3f] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_fac_driver_+0x5d2f) [0x7fd520bcd6cf] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_+0x2c6a) [0x7fd520b5c499] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_f77_+0x190b) [0x7fd520aef9f7] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(dmumps_c+0xe10) [0x7fd520aedfb4] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0x50d7a3) [0x7fd5200f77a3] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(MatLUFactorNumeric+0x369) [0x7fd520272431] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0xc67f73) [0x7fd520851f73] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(PCSetUp+0x621) [0x7fd5208d0029] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(KSPSetUp+0xd57) [0x7fd5206ffcf2] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(+0xb17d4c) [0x7fd520701d4c] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/src/petsc/default/lib/libpetsc.so.3.016(KSPSolve+0x13) [0x7fd520704f13] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0xe18eb) [0x7fd52169c8eb] /lib64/libpython3.6m.so.1.0(_PyCFunction_FastCallDict+0x353) [0x7fd5307a3a73] /lib64/libpython3.6m.so.1.0(+0x167dd0) [0x7fd5307a3dd0] /lib64/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x474) [0x7fd5307cc5b4] /lib64/libpython3.6m.so.1.0(PyEval_EvalCodeEx+0x337) [0x7fd5307ae727] /lib64/libpython3.6m.so.1.0(+0x17369e) [0x7fd5307af69e] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0x71ed3) [0x7fd52162ced3] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0xd75f6) [0x7fd5216925f6] /home/z2yang/opt/firedrake-env/firedrake-mini-petsc/lib64/python3.6/site-packages/petsc4py/lib/default/PETSc.cpython-36m-x86_64-linux-gnu.so(+0x717bf) [0x7fd52162c7bf] internal ABORT - process 0 ```   Best wishes, Zongze