Did it fail without GPU at 64 MPI ranks? --Junchao Zhang
On Thu, Feb 10, 2022 at 1:22 PM Sajid Ali Syed <[email protected]> wrote: > Hi PETSc-developers, > > I’m seeing the following crash that occurs during the setup phase of the > preconditioner when using multiple GPUs. The relevant error trace is shown > below: > > (GTL DEBUG: 26) cuIpcOpenMemHandle: resource already mapped, > CUDA_ERROR_ALREADY_MAPPED, line no 272 > [24]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [24]PETSC ERROR: General MPI error > [24]PETSC ERROR: MPI error 1 Invalid buffer pointer > [24]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting. > [24]PETSC ERROR: Petsc Development GIT revision: > f351d5494b5462f62c419e00645ac2e477b88cae GIT Date: 2022-02-08 15:08:19 +0000 > ... > [24]PETSC ERROR: #1 PetscSFLinkWaitRequests_MPI() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/vec/is/sf/impls/basic/sfmpi.c:54 > [24]PETSC ERROR: #2 PetscSFLinkFinishCommunication() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/include/../src/vec/is/sf/impls/basic/sfpack.h:274 > [24]PETSC ERROR: #3 PetscSFBcastEnd_Basic() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/vec/is/sf/impls/basic/sfbasic.c:218 > [24]PETSC ERROR: #4 PetscSFBcastEnd() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/vec/is/sf/interface/sf.c:1499 > [24]PETSC ERROR: #5 VecScatterEnd_Internal() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/vec/is/sf/interface/vscat.c:87 > [24]PETSC ERROR: #6 VecScatterEnd() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/vec/is/sf/interface/vscat.c:1366 > [24]PETSC ERROR: #7 MatMult_MPIAIJCUSPARSE() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu:302 > [24]PETSC ERROR: #8 MatMult() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/mat/interface/matrix.c:2438 > [24]PETSC ERROR: #9 PCApplyBAorAB() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/pc/interface/precon.c:730 > [24]PETSC ERROR: #10 KSP_PCApplyBAorAB() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/include/petsc/private/kspimpl.h:421 > [24]PETSC ERROR: #11 KSPGMRESCycle() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/ksp/impls/gmres/gmres.c:162 > [24]PETSC ERROR: #12 KSPSolve_GMRES() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/ksp/impls/gmres/gmres.c:247 > [24]PETSC ERROR: #13 KSPSolve_Private() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/ksp/interface/itfunc.c:925 > [24]PETSC ERROR: #14 KSPSolve() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/ksp/interface/itfunc.c:1103 > [24]PETSC ERROR: #15 PCGAMGOptProlongator_AGG() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/pc/impls/gamg/agg.c:1127 > [24]PETSC ERROR: #16 PCSetUp_GAMG() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/pc/impls/gamg/gamg.c:626 > [24]PETSC ERROR: #17 PCSetUp() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/pc/interface/precon.c:1017 > [24]PETSC ERROR: #18 KSPSetUp() at > /tmp/sajid/spack-stage/spack-stage-petsc-main-mnj56kbexro3fipf6kheyttljzwss7fo/spack-src/src/ksp/ksp/interface/itfunc.c:417 > [24]PETSC ERROR: #19 main() at poisson3d.c:69 > [24]PETSC ERROR: PETSc Option Table entries: > [24]PETSC ERROR: -dm_mat_type aijcusparse > [24]PETSC ERROR: -dm_vec_type cuda > [24]PETSC ERROR: -ksp_monitor > [24]PETSC ERROR: -ksp_norm_type unpreconditioned > [24]PETSC ERROR: -ksp_type cg > [24]PETSC ERROR: -ksp_view > [24]PETSC ERROR: -log_view > [24]PETSC ERROR: -mg_levels_esteig_ksp_type cg > [24]PETSC ERROR: -mg_levels_ksp_type chebyshev > [24]PETSC ERROR: -mg_levels_pc_type jacobi > [24]PETSC ERROR: -pc_gamg_agg_nsmooths 1 > [24]PETSC ERROR: -pc_gamg_square_graph 1 > [24]PETSC ERROR: -pc_gamg_threshold 0.0 > [24]PETSC ERROR: -pc_gamg_threshold_scale 0.0 > [24]PETSC ERROR: -pc_gamg_type agg > [24]PETSC ERROR: -pc_type gamg > [24]PETSC ERROR: ----------------End of Error Message -------send entire > error message to [email protected] > > Attached with this email is the full error log and the submit script for a > 8-node/64-GPU/64 MPI rank job. I’ll also note that the same program did not > crash when using either 2 or 4 nodes (with 8 & 16 GPUs/MPI ranks > respectively) and attach those logs as well if that helps. Could someone > let me know what this error means and what can be done to prevent it? > > Thank You, > Sajid Ali (he/him) | Research Associate > > Scientific Computing Division > > Fermi National Accelerator Laboratory > > s-sajid-ali.github.io > >
