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Application works with UCX_LOG_LEVEL=info (or more verbose levels), but hangs otherwise #9532

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bedroge opened this issue Dec 5, 2023 · 6 comments
Open

Application works with UCX_LOG_LEVEL=info (or more verbose levels), but hangs otherwise #9532

bedroge opened this issue Dec 5, 2023 · 6 comments
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@bedroge
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bedroge commented Dec 5, 2023

Describe the bug

I'm running into a weird issue on one particular system where importing the Python interface of waLBerla, which I compiled from source using EasyBuild, hangs:

# doesn't work
mpirun -np 1 python -c "import waLBerla"

Then I found that disabling the UCX PML solved the issue:

# works
mpirun --mca pml ^ucx -np 1 python -c "import waLBerla"

So I tried again with UCX and some more debugging output, but then suddenly it works:

# works
UCX_LOG_LEVEL=DEBUG mpirun -np 1 python -c "import waLBerla"

# works too
UCX_LOG_LEVEL=INFO mpirun -np 1 python -c "import waLBerla"

# doesn't work
UCX_LOG_LEVEL=DIAG mpirun -np 1 python -c "import waLBerla"

I've tried it with both the following set of dependencies:

Currently Loaded Modules:
  1) GCCcore/12.2.0
  2) zlib/1.2.12-GCCcore-12.2.0
  3) binutils/2.39-GCCcore-12.2.0
  4) bzip2/1.0.8-GCCcore-12.2.0
  5) ncurses/6.3-GCCcore-12.2.0
  6) libreadline/8.2-GCCcore-12.2.0
  7) Tcl/8.6.12-GCCcore-12.2.0
  8) SQLite/3.39.4-GCCcore-12.2.0
  9) XZ/5.2.7-GCCcore-12.2.0
 10) GMP/6.2.1-GCCcore-12.2.0
 11) libffi/3.4.4-GCCcore-12.2.0
 12) OpenSSL/1.1
 13) Python/3.10.8-GCCcore-12.2.0
 14) pybind11/2.10.3-GCCcore-12.2.0
 15) GCC/12.2.0
 16) OpenBLAS/0.3.21-GCC-12.2.0
 17) FlexiBLAS/3.2.1-GCC-12.2.0
 18) FFTW/3.3.10-GCC-12.2.0
 19) gfbf/2022b
 20) SciPy-bundle/2023.02-gfbf-2022b
 21) numactl/2.0.16-GCCcore-12.2.0
 22) libxml2/2.10.3-GCCcore-12.2.0
 23) libpciaccess/0.17-GCCcore-12.2.0
 24) hwloc/2.8.0-GCCcore-12.2.0
 25) libevent/2.1.12-GCCcore-12.2.0
 26) UCX/1.13.1-GCCcore-12.2.0
 27) libfabric/1.16.1-GCCcore-12.2.0
 28) PMIx/4.2.2-GCCcore-12.2.0
 29) UCC/1.1.0-GCCcore-12.2.0
 30) OpenMPI/4.1.4-GCC-12.2.0
 31) gompi/2022b
 32) gzip/1.12-GCCcore-12.2.0
 33) lz4/1.9.4-GCCcore-12.2.0
 34) zstd/1.5.2-GCCcore-12.2.0
 35) ICU/72.1-GCCcore-12.2.0
 36) Boost.MPI/1.77.0-gompi-2022b

and with some slightly newer versions:

Currently Loaded Modules:
  1) OpenSSL/1.1
  2) GCC/12.3.0
  3) OpenBLAS/0.3.23-GCC-12.3.0
  4) FlexiBLAS/3.3.1-GCC-12.3.0
  5) FFTW/3.3.10-GCC-12.3.0
  6) gfbf/2023a
  7) binutils/2.40-GCCcore-12.3.0
  8) bzip2/1.0.8-GCCcore-12.3.0
  9) ncurses/6.4-GCCcore-12.3.0
 10) libreadline/8.2-GCCcore-12.3.0
 11) zlib/1.2.13-GCCcore-12.3.0
 12) Tcl/8.6.13-GCCcore-12.3.0
 13) SQLite/3.42.0-GCCcore-12.3.0
 14) XZ/5.4.2-GCCcore-12.3.0
 15) libffi/3.4.4-GCCcore-12.3.0
 16) cffi/1.15.1-GCCcore-12.3.0
 17) cryptography/41.0.1-GCCcore-12.3.0
 18) virtualenv/20.23.1-GCCcore-12.3.0
 19) Python-bundle-PyPI/2023.06-GCCcore-12.3.0
 20) GCCcore/12.3.0
 21) Python/3.11.3-GCCcore-12.3.0
 22) pybind11/2.11.1-GCCcore-12.3.0
 23) SciPy-bundle/2023.07-gfbf-2023a
 24) numactl/2.0.16-GCCcore-12.3.0
 25) libxml2/2.11.4-GCCcore-12.3.0
 26) libpciaccess/0.17-GCCcore-12.3.0
 27) hwloc/2.9.1-GCCcore-12.3.0
 28) libevent/2.1.12-GCCcore-12.3.0
 29) UCX/1.14.1-GCCcore-12.3.0
 30) libfabric/1.18.0-GCCcore-12.3.0
 31) PMIx/4.2.4-GCCcore-12.3.0
 32) UCC/1.2.0-GCCcore-12.3.0
 33) OpenMPI/4.1.5-GCC-12.3.0
 34) gompi/2023a
 35) gzip/1.12-GCCcore-12.3.0
 36) lz4/1.9.4-GCCcore-12.3.0
 37) zstd/1.5.5-GCCcore-12.3.0
 38) ICU/73.2-GCCcore-12.3.0
 39) Boost.MPI/1.79.0-gompi-2023a

And also with UCX/1.15.0 I'm still seeing this same issue.

These are the last lines of strace output for a run that hangs:

read(28, "", 20)                        = 0
close(28)                               = 0
poll([{fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}, {fd=26, events=POLLIN}], 6, 0) = 0 (Timeout)
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
fstat(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0x5), ...}) = 0
fstat(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0x5), ...}) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
fstat(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0x5), ...}) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
getpgrp()                               = 643343
ioctl(0, TIOCGPGRP, [643343])           = 0
poll([{fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}, {fd=26, events=POLLIN}, {fd=0, events=POLLIN}], 7, -1) = 1 ([{fd=5, revents=POLLIN}])
read(5, "\1\0\0\0\0\0\0\0", 8)          = 8
poll([{fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}, {fd=26, events=POLLIN}, {fd=0, events=POLLIN}], 7, 0) = 0 (Timeout)
poll([{fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=7, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}, {fd=26, events=POLLIN}, {fd=0, events=POLLIN}], 7, -1

I'm not sure how to get more information, as increasing the verbosity solves the issue. I've included the output for a (successful) run with UCX_LOG_LEVEL at the bottom of this issue.

Steps to Reproduce

  • Command line: mpirun -np 1 python -c "import waLBerla"
  • UCX version used (from github branch XX or release YY) + UCX configure flags (can be checked by ucx_info -v)
    • 1.13.1, 1.14.1, 1.15.0
  • Any UCX environment variables used: none or only UCX_LOG_LEVEL

Setup and versions

  • OS version (e.g Linux distro) + CPU architecture (x86_64/aarch64/ppc64le/...)

    • cat /etc/issue or cat /etc/redhat-release + uname -a
    • Rocky Linux 8.5, Linux login1 4.18.0-348.12.2.el8_5.x86_64 #1 SMP Wed Jan 19 17:53:40 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

  • For RDMA/IB/RoCE related issues:

    • Driver version:
      • rpm -q rdma-core: rdma-core-35.0-1.el8.x86_64
      • rpm -q libibverbs: libibverbs-35.0-1.el8.x86_64
    • HW information from ibstat or ibv_devinfo -vv command: ibstat is available, but there's no Infiniband, hence no output from the command

Additional information (depending on the issue)

  • OpenMPI version: 4.1.4 and 4.1.5
  • Output of ucx_info -d to show transports and devices recognized by UCX:
# Memory domain: self
#     Component: self
#             register: unlimited, cost: 0 nsec
#           remote key: 0 bytes
#         memory types: host (access,reg,cache)
#
#      Transport: self
#         Device: memory
#           Type: loopback
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 0.00/ppn + 6911.00 MB/sec
#              latency: 0 nsec
#             overhead: 10 nsec
#            put_short: <= 4294967295
#            put_bcopy: unlimited
#            get_bcopy: unlimited
#             am_short: <= 8K
#             am_bcopy: <= 8K
#               domain: cpu
#           atomic_add: 32, 64 bit
#           atomic_and: 32, 64 bit
#            atomic_or: 32, 64 bit
#           atomic_xor: 32, 64 bit
#          atomic_fadd: 32, 64 bit
#          atomic_fand: 32, 64 bit
#           atomic_for: 32, 64 bit
#          atomic_fxor: 32, 64 bit
#          atomic_swap: 32, 64 bit
#         atomic_cswap: 32, 64 bit
#           connection: to iface
#      device priority: 0
#     device num paths: 1
#              max eps: inf
#       device address: 0 bytes
#        iface address: 8 bytes
#       error handling: ep_check
#
#
# Memory domain: tcp
#     Component: tcp
#             register: unlimited, cost: 0 nsec
#           remote key: 0 bytes
#         memory types: host (access,reg,cache)
#
#      Transport: tcp
#         Device: lo
#           Type: network
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 11.91/ppn + 0.00 MB/sec
#              latency: 10960 nsec
#             overhead: 50000 nsec
#            put_zcopy: <= 18446744073709551590, up to 6 iov
#  put_opt_zcopy_align: <= 1
#        put_align_mtu: <= 0
#             am_short: <= 8K
#             am_bcopy: <= 8K
#             am_zcopy: <= 64K, up to 6 iov
#   am_opt_zcopy_align: <= 1
#         am_align_mtu: <= 0
#            am header: <= 8037
#           connection: to ep, to iface
#      device priority: 1
#     device num paths: 1
#              max eps: 256
#       device address: 18 bytes
#        iface address: 2 bytes
#           ep address: 10 bytes
#       error handling: peer failure, ep_check, keepalive
#
#      Transport: tcp
#         Device: eth0
#           Type: network
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 11.32/ppn + 0.00 MB/sec
#              latency: 10960 nsec
#             overhead: 50000 nsec
#            put_zcopy: <= 18446744073709551590, up to 6 iov
#  put_opt_zcopy_align: <= 1
#        put_align_mtu: <= 0
#             am_short: <= 8K
#             am_bcopy: <= 8K
#             am_zcopy: <= 64K, up to 6 iov
#   am_opt_zcopy_align: <= 1
#         am_align_mtu: <= 0
#            am header: <= 8037
#           connection: to ep, to iface
#      device priority: 0
#     device num paths: 1
#              max eps: 256
#       device address: 6 bytes
#        iface address: 2 bytes
#           ep address: 10 bytes
#       error handling: peer failure, ep_check, keepalive
#
#
# Connection manager: tcp
#      max_conn_priv: 2064 bytes
#
# Memory domain: sysv
#     Component: sysv
#             allocate: unlimited
#           remote key: 12 bytes
#           rkey_ptr is supported
#         memory types: host (access,alloc,cache)
#
#      Transport: sysv
#         Device: memory
#           Type: intra-node
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 0.00/ppn + 15360.00 MB/sec
#              latency: 80 nsec
#             overhead: 10 nsec
#            put_short: <= 4294967295
#            put_bcopy: unlimited
#            get_bcopy: unlimited
#             am_short: <= 100
#             am_bcopy: <= 8256
#               domain: cpu
#           atomic_add: 32, 64 bit
#           atomic_and: 32, 64 bit
#            atomic_or: 32, 64 bit
#           atomic_xor: 32, 64 bit
#          atomic_fadd: 32, 64 bit
#          atomic_fand: 32, 64 bit
#           atomic_for: 32, 64 bit
#          atomic_fxor: 32, 64 bit
#          atomic_swap: 32, 64 bit
#         atomic_cswap: 32, 64 bit
#           connection: to iface
#      device priority: 0
#     device num paths: 1
#              max eps: inf
#       device address: 8 bytes
#        iface address: 8 bytes
#       error handling: ep_check
#
#
# Memory domain: posix
#     Component: posix
#             allocate: <= 16173312K
#           remote key: 24 bytes
#           rkey_ptr is supported
#         memory types: host (access,alloc,cache)
#
#      Transport: posix
#         Device: memory
#           Type: intra-node
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 0.00/ppn + 15360.00 MB/sec
#              latency: 80 nsec
#             overhead: 10 nsec
#            put_short: <= 4294967295
#            put_bcopy: unlimited
#            get_bcopy: unlimited
#             am_short: <= 100
#             am_bcopy: <= 8256
#               domain: cpu
#           atomic_add: 32, 64 bit
#           atomic_and: 32, 64 bit
#            atomic_or: 32, 64 bit
#           atomic_xor: 32, 64 bit
#          atomic_fadd: 32, 64 bit
#          atomic_fand: 32, 64 bit
#           atomic_for: 32, 64 bit
#          atomic_fxor: 32, 64 bit
#          atomic_swap: 32, 64 bit
#         atomic_cswap: 32, 64 bit
#           connection: to iface
#      device priority: 0
#     device num paths: 1
#              max eps: inf
#       device address: 8 bytes
#        iface address: 8 bytes
#       error handling: ep_check
#
# < failed to open connection manager rdmacm >
#
# Memory domain: cma
#     Component: cma
#             register: unlimited, cost: 9 nsec
#         memory types: host (access,reg,cache)
#
#      Transport: cma
#         Device: memory
#           Type: intra-node
#  System device: <unknown>
#
#      capabilities:
#            bandwidth: 0.00/ppn + 11145.00 MB/sec
#              latency: 80 nsec
#             overhead: 2000 nsec
#            put_zcopy: unlimited, up to 16 iov
#  put_opt_zcopy_align: <= 1
#        put_align_mtu: <= 1
#            get_zcopy: unlimited, up to 16 iov
#  get_opt_zcopy_align: <= 1
#        get_align_mtu: <= 1
#           connection: to iface
#      device priority: 0
#     device num paths: 1
#              max eps: inf
#       device address: 8 bytes
#        iface address: 4 bytes
#       error handling: peer failure, ep_check
#
  • Configure result - config.log
  • Log file - configure UCX with "--enable-logging" - and run with "UCX_LOG_LEVEL=data"
    With UCX_LOG_LEVEL=data things work fine, but here it is anyway:
[1701777539.029420] [login1:643305:0]           debug.c:1146 UCX  DEBUG using signal stack 0x7fe1dcc9b000 size 141824
[1701777539.029493] [login1:643305:0]             cpu.c:233  UCX  DEBUG CPU does not support invariant TSC, using fallback timer
[1701777539.029518] [login1:643305:0]            init.c:118  UCX  DEBUG /project/boegelbot/Rocky8/haswell/software/UCX/1.13.1-GCCcore-12.2.0/lib/libucs.so.0 loaded at 0x7fe1dce15000
[1701777539.029541] [login1:643305:0]            init.c:120  UCX  DEBUG cmd line: python -c import waLBerla 
[1701777539.029555] [login1:643305:0]          module.c:72   UCX  DEBUG ucs library path: /project/boegelbot/Rocky8/haswell/software/UCX/1.13.1-GCCcore-12.2.0/lib/libucs.so.0
[1701777539.029560] [login1:643305:0]          module.c:282  UCX  DEBUG loading modules for ucs
[1701777539.030590] [login1:643305:0]            time.c:22   UCX  DEBUG arch clock frequency: 1000000.00 Hz
[1701777539.030660] [login1:643305:0]     ucp_context.c:1849 UCX  INFO  Version 1.13.1 (loaded from /project/boegelbot/Rocky8/haswell/software/UCX/1.13.1-GCCcore-12.2.0/lib/libucp.so.0)
[1701777539.030672] [login1:643305:0]     ucp_context.c:1624 UCX  DEBUG estimated number of endpoints is 1
[1701777539.030675] [login1:643305:0]     ucp_context.c:1631 UCX  DEBUG estimated number of endpoints per node is 1
[1701777539.030682] [login1:643305:0]     ucp_context.c:1638 UCX  DEBUG estimated bcopy bandwidth is 6081740800.000000
[1701777539.030702] [login1:643305:0]     ucp_context.c:1705 UCX  DEBUG allocation method[0] is md 'sysv'
[1701777539.030709] [login1:643305:0]     ucp_context.c:1705 UCX  DEBUG allocation method[1] is md 'posix'
[1701777539.030716] [login1:643305:0]     ucp_context.c:1717 UCX  DEBUG allocation method[2] is 'huge'
[1701777539.030722] [login1:643305:0]     ucp_context.c:1717 UCX  DEBUG allocation method[3] is 'thp'
[1701777539.030725] [login1:643305:0]     ucp_context.c:1705 UCX  DEBUG allocation method[4] is md '*'
[1701777539.030732] [login1:643305:0]     ucp_context.c:1717 UCX  DEBUG allocation method[5] is 'mmap'
[1701777539.030734] [login1:643305:0]     ucp_context.c:1717 UCX  DEBUG allocation method[6] is 'heap'
[1701777539.030751] [login1:643305:0]          module.c:282  UCX  DEBUG loading modules for uct
[1701777539.033561] [login1:643305:0]          module.c:282  UCX  DEBUG loading modules for uct_ib
[1701777539.033640] [login1:643305:0]           ib_md.c:1195 UCX  DEBUG Failed to get IB device list, assuming no devices are present
[1701777539.034009] [login1:643305:0]           ib_md.c:1195 UCX  DEBUG Failed to get IB device list, assuming no devices are present
[1701777539.034080] [login1:643305:0]           mpool.c:98   UCX  DEBUG mpool rcache_mp: align 8, maxelems 4294967295, elemsize 144
[1701777539.037397] [login1:643305:0]           async.c:230  UCX  DEBUG added async handler 0x954bf0 [id=23 ref 1] ucs_rcache_invalidate_handler() to hash
[1701777539.037532] [login1:643305:0]           async.c:508  UCX  DEBUG listening to async event fd 23 events 0x1 mode thread_spinlock
[1701777539.037600] [login1:643305:0]          module.c:282  UCX  DEBUG loading modules for ucm
[1701777539.037632] [login1:643305:0]     ucp_context.c:1913 UCX  DEBUG created ucp context 0x95dcb0 0x95dcb0 [5 mds 6 tls] features 0x1 tl bitmap 0x3f 0x0
[1701777539.044183] [login1:643305:0]           async.c:155  UCX  DEBUG removed async handler 0x954bf0 [id=23 ref 1] ucs_rcache_invalidate_handler() from hash
[1701777539.044199] [login1:643305:0]           async.c:561  UCX  DEBUG removing async handler 0x954bf0 [id=23 ref 1] ucs_rcache_invalidate_handler()
[1701777539.044270] [login1:643305:0]           async.c:170  UCX  DEBUG release async handler 0x954bf0 [id=23 ref 0] ucs_rcache_invalidate_handler()
[1701777539.044283] [login1:643305:0]         pgtable.c:618  UCX  DEBUG purge empty page table
[1701777539.044293] [login1:643305:0]           mpool.c:154  UCX  DEBUG mpool rcache_mp destroyed
@bedroge bedroge added the Bug label Dec 5, 2023
@bedroge
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bedroge commented Dec 5, 2023

Forgot to mention it, but the same version of waLBerla works fine on this system (regardless of UCX_LOG_LEVEL) when using even older versions of the compiler toolchain:

Currently Loaded Modules:
  1) GCCcore/10.3.0
  2) zlib/1.2.11-GCCcore-10.3.0
  3) binutils/2.36.1-GCCcore-10.3.0
  4) GCC/10.3.0
  5) numactl/2.0.14-GCCcore-10.3.0
  6) XZ/5.2.5-GCCcore-10.3.0
  7) libxml2/2.9.10-GCCcore-10.3.0
  8) libpciaccess/0.16-GCCcore-10.3.0
  9) hwloc/2.4.1-GCCcore-10.3.0
 10) OpenSSL/1.1
 11) libevent/2.1.12-GCCcore-10.3.0
 12) UCX/1.10.0-GCCcore-10.3.0
 13) libfabric/1.12.1-GCCcore-10.3.0
 14) PMIx/3.2.3-GCCcore-10.3.0
 15) OpenMPI/4.1.1-GCC-10.3.0
 16) OpenBLAS/0.3.15-GCC-10.3.0
 17) FlexiBLAS/3.0.4-GCC-10.3.0
 18) gompi/2021a
 19) FFTW/3.3.9-gompi-2021a
 20) ScaLAPACK/2.1.0-gompi-2021a-fb
 21) foss/2021a
 22) bzip2/1.0.8-GCCcore-10.3.0
 23) ncurses/6.2-GCCcore-10.3.0
 24) libreadline/8.1-GCCcore-10.3.0
 25) Tcl/8.6.11-GCCcore-10.3.0
 26) SQLite/3.35.4-GCCcore-10.3.0
 27) GMP/6.2.1-GCCcore-10.3.0
 28) libffi/3.3-GCCcore-10.3.0
 29) Python/3.9.5-GCCcore-10.3.0
 30) pybind11/2.6.2-GCCcore-10.3.0
 31) gzip/1.10-GCCcore-10.3.0
 32) lz4/1.9.3-GCCcore-10.3.0
 33) zstd/1.4.9-GCCcore-10.3.0
 34) ICU/69.1-GCCcore-10.3.0
 35) Boost.MPI/1.76.0-gompi-2021a
 36) SciPy-bundle/2021.05-foss-2021a

@yosefe
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yosefe commented Dec 5, 2023

@bedroge can you pls attach to the hanging process with gdb and post the backtrace of the hang (gdb command is "thread apply all backtrace")

@bedroge
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bedroge commented Dec 6, 2023

Sure! Here it is (for the python process):

(gdb) thread apply all backtrace

Thread 4 (Thread 0x7f5467989700 (LWP 903569)):
#0  0x00007f547e24775d in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00007f547e240b44 in pthread_mutex_lock () from /lib64/libpthread.so.0
#2  0x00007f547efcd19f in tls_get_addr_tail.isra () from /lib64/ld-linux-x86-64.so.2
#3  0x00007f547efd3cdc in __tls_get_addr () from /lib64/ld-linux-x86-64.so.2
#4  0x00007f546c27fe8a in ucs_log_set_thread_name (format=format@entry=0x7f546c2930a8 "a") at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/log.c:576
#5  0x00007f546c26f85e in ucs_async_thread_func (arg=0xf64c90) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/thread.c:108
#6  0x00007f547e23e17a in start_thread () from /lib64/libpthread.so.0
#7  0x00007f547dd69dc3 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f546ea21700 (LWP 903566)):
#0  0x00007f547dd6a0f7 in epoll_wait () from /lib64/libc.so.6
#1  0x00007f546f4a54b3 in epoll_dispatch () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#2  0x00007f546f49bc95 in event_base_loop () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#3  0x00007f546ead67e1 in progress_engine () from /project/boegelbot/Rocky8/haswell/software/PMIx/4.2.2-GCCcore-12.2.0/lib/libpmix.so.2
#4  0x00007f547e23e17a in start_thread () from /lib64/libpthread.so.0
#5  0x00007f547dd69dc3 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f546f44b700 (LWP 903565)):
#0  0x00007f547dd5ea41 in poll () from /lib64/libc.so.6
#1  0x00007f546f4a4825 in poll_dispatch () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#2  0x00007f546f49bc95 in event_base_loop () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#3  0x00007f546f8f854e in progress_engine () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libopen-pal.so.40
#4  0x00007f547e23e17a in start_thread () from /lib64/libpthread.so.0
#5  0x00007f547dd69dc3 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f547f1d7740 (LWP 903564)):
#0  0x00007f547e23f66d in __pthread_timedjoin_ex () from /lib64/libpthread.so.0
#1  0x00007f546c26f579 in ucs_async_thread_stop () at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/thread.c:257
#2  0x00007f546c26f7de in ucs_async_thread_remove_event_fd (async=<optimized out>, event_fd=<optimized out>) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/thread.c:353
#3  0x00007f546c26d595 in ucs_async_remove_handler (id=<optimized out>, is_sync=is_sync@entry=1) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/async.c:567
#4  0x00007f546c28239a in ucs_rcache_global_list_remove (rcache=0xbe3a70) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/rcache.c:1193
#5  0x00007f546c2830eb in ucs_rcache_t_cleanup (self=0xbe3a70) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/rcache.c:1331
#6  0x00007f546c28dcae in ucs_class_call_cleanup_chain (cls=cls@entry=0x7f546c2a8620 <ucs_rcache_t_class>, obj=obj@entry=0xbe3a70, limit=limit@entry=-1)
    at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/class.c:56
#7  0x00007f546c2841f8 in ucs_rcache_destroy (self=0xbe3a70) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucs/rcache.c:1358
#8  0x00007f546c31add1 in ucp_mem_rcache_cleanup (context=<optimized out>) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucp/ucp_mm.c:1048
#9  0x00007f546c307afb in ucp_cleanup (context=0xf5e630) at /tmp/boegelbot/UCX/1.13.1/GCCcore-12.2.0/ucx-1.13.1/src/ucp/ucp_context.c:1938
#10 0x00007f546c3a3265 in mca_pml_ucx_close () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/openmpi/mca_pml_ucx.so
#11 0x00007f546c3a5719 in mca_pml_ucx_component_close () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/openmpi/mca_pml_ucx.so
#12 0x00007f546f9148d9 in mca_base_component_close () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libopen-pal.so.40
#13 0x00007f546f914965 in mca_base_components_close () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libopen-pal.so.40
#14 0x00007f546fc64de4 in mca_pml_base_select () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libmpi.so.40
#15 0x00007f546fc70da8 in ompi_mpi_init () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libmpi.so.40
#16 0x00007f546fc14c04 in PMPI_Init () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/libmpi.so.40
#17 0x00007f5470584fa3 in walberla::mpi::MPIManager::initializeMPI(int*, char***, bool) ()
--Type <RET> for more, q to quit, c to continue without paging--
   from /home/bedroge/easybuildinstall/software/waLBerla/6.1-foss-2022b/pythonmodule/waLBerla/walberla_cpp.cpython-310-x86_64-linux-gnu.so
#18 0x00007f5470834bdb in walberla::python_coupling::initWalberlaForPythonModule() ()
   from /home/bedroge/easybuildinstall/software/waLBerla/6.1-foss-2022b/pythonmodule/waLBerla/walberla_cpp.cpython-310-x86_64-linux-gnu.so
#19 0x00007f54703de732 in InitObject::InitObject() ()
   from /home/bedroge/easybuildinstall/software/waLBerla/6.1-foss-2022b/pythonmodule/waLBerla/walberla_cpp.cpython-310-x86_64-linux-gnu.so
#20 0x00007f547038663a in _GLOBAL__sub_I_PythonModule.cpp ()
   from /home/bedroge/easybuildinstall/software/waLBerla/6.1-foss-2022b/pythonmodule/waLBerla/walberla_cpp.cpython-310-x86_64-linux-gnu.so
#21 0x00007f547efca8ba in call_init.part () from /lib64/ld-linux-x86-64.so.2
#22 0x00007f547efca9ba in _dl_init () from /lib64/ld-linux-x86-64.so.2
#23 0x00007f547dda530c in _dl_catch_exception () from /lib64/libc.so.6
#24 0x00007f547efcee8e in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#25 0x00007f547dda52b4 in _dl_catch_exception () from /lib64/libc.so.6
#26 0x00007f547efce6b1 in _dl_open () from /lib64/ld-linux-x86-64.so.2
#27 0x00007f547e7d91ea in dlopen_doit () from /lib64/libdl.so.2
#28 0x00007f547dda52b4 in _dl_catch_exception () from /lib64/libc.so.6
#29 0x00007f547dda5373 in _dl_catch_error () from /lib64/libc.so.6
#30 0x00007f547e7d9969 in _dlerror_run () from /lib64/libdl.so.2
#31 0x00007f547e7d928a in dlopen@@GLIBC_2.2.5 () from /lib64/libdl.so.2
#32 0x00007f547edd9aae in _PyImport_FindSharedFuncptr (prefix=0x7f547ee6b42f "PyInit", shortname=0x7f5470c4b2f0 "walberla_cpp", 
    pathname=0x7f5470c7f540 "/home/bedroge/easybuildinstall/software/waLBerla/6.1-foss-2022b/pythonmodule/waLBerla/walberla_cpp.cpython-310-x86_64-linux-gnu.so", fp=0x0)
    at Modules/transmogrify.h:100
#33 0x00007f547edd89d3 in _PyImport_LoadDynamicModuleWithSpec (fp=<optimized out>, spec=0x7f5470cabbb0) at ./Python/pycore_hashtable.h:137
#34 _imp_create_dynamic_impl (module=<optimized out>, file=<optimized out>, spec=0x7f5470cabbb0) at Objects/pylifecycle.c:2049
#35 _imp_create_dynamic (module=<optimized out>, args=<optimized out>, nargs=<optimized out>) at Modules/fastsearch.h:330
#36 0x00007f547ed4414a in cfunction_vectorcall_FASTCALL (func=0x7f547f1858a0, args=0x7f5470c4bd78, nargsf=<optimized out>, kwnames=<optimized out>) at ./Python/pycore_bitutils.h:430
#37 0x00007f547ed3bcf0 in _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4277
#38 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#39 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#40 0x00007f547ed398b9 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f1005c8, callable=0x7f547f139510, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#41 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f1005c8, callable=0x7f547f139510) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#42 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdb640, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#43 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4181
#44 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#45 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#46 0x00007f547ed38dff in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f190838, callable=0x7f547f1ba950, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#47 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f190838, callable=0x7f547f1ba950) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#48 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdb8a0, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#49 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4198
#50 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
--Type <RET> for more, q to quit, c to continue without paging--
#51 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=1, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#52 0x00007f547ed38ab4 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f139ea0, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#53 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f139ea0) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#54 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdbb00, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#55 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4213
#56 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#57 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=1, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#58 0x00007f547ed38ab4 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13a0e0, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#59 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13a0e0) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#60 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdbd60, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#61 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4213
#62 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#63 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#64 0x00007f547ed38ab4 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13b2e0, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#65 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13b2e0) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#66 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdbfc0, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#67 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4213
#68 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#69 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#70 0x00007f547ed437cb in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=2, args=0x7fffcecdc150, callable=0x7f547f13b370, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:99
#71 object_vacall (tstate=0x9823c0, base=<optimized out>, callable=0x7f547f13b370, vargs=0x7fffcecdc1e0) at ./Modules/abstract.h:734
#72 0x00007f547ed4ef08 in _PyObject_CallMethodIdObjArgs (obj=0x0, name=<optimized out>) at ./Modules/abstract.h:825
#73 0x00007f547ed4e7da in import_find_and_load (abs_name=0x7f5470ac9d40, abs_name@entry=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=0x9823c0, tstate@entry=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/pylifecycle.c:1521
#74 PyImport_ImportModuleLevelObject (name=0x7f5470ad4370, globals=<optimized out>, locals=<optimized out>, fromlist=0x7f5470c4b7f0, level=1) at Objects/pylifecycle.c:1622
#75 0x00007f547ed3c068 in import_name (level=0x7f547f0d80f0, fromlist=0x7f5470c4b7f0, name=0x7f5470ad4370, f=<optimized out>, tstate=<optimized out>) at Objects/ceval_gil.h:6016
#76 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:3695
#77 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#78 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=0, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#79 0x00007f547edad249 in PyEval_EvalCode (co=0x7f5470c7ddc0, globals=0x7f5470c9d940, locals=0x7f5470c9d940) at Objects/ceval_gil.h:1134
#80 0x00007f547edb4497 in builtin_exec_impl (module=<optimized out>, locals=0x7f5470c9d940, globals=0x7f5470c9d940, source=0x7f5470c7ddc0) at Python/getplatform.c:1003
#81 builtin_exec (module=<optimized out>, args=<optimized out>, nargs=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/cellobject.c:371
#82 0x00007f547ed4414a in cfunction_vectorcall_FASTCALL (func=0x7f547f170e00, args=0x7f5470cb7458, nargsf=<optimized out>, kwnames=<optimized out>) at ./Python/pycore_bitutils.h:430
#83 0x00007f547ed3bcf0 in _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4277
--Type <RET> for more, q to quit, c to continue without paging--
#84 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#85 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=3, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#86 0x00007f547ed398b9 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f19f648, callable=0x7f547f139510, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#87 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f19f648, callable=0x7f547f139510) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#88 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdca20, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#89 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4181
#90 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#91 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#92 0x00007f547ed38dff in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f1960c0, callable=0x7f547f1b9a20, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#93 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7f547f1960c0, callable=0x7f547f1b9a20) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#94 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdcc80, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#95 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4198
#96 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#97 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=1, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#98 0x00007f547ed38ab4 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13a0e0, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#99 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13a0e0) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#100 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdcee0, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#101 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4213
#102 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#103 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#104 0x00007f547ed38ab4 in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13b2e0, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#105 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=<optimized out>, callable=0x7f547f13b2e0) at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:123
#106 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, trace_info=0x7fffcecdd140, tstate=<optimized out>) at Objects/ceval_gil.h:5891
#107 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:4213
#108 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#109 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=2, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#110 0x00007f547ed437cb in _PyObject_VectorcallTstate (kwnames=0x0, nargsf=2, args=0x7fffcecdd2d0, callable=0x7f547f13b370, tstate=0x9823c0)
    at /tmp/boegelbot/Python/3.10.8/GCCcore-12.2.0/Python-3.10.8/abstract.c:99
#111 object_vacall (tstate=0x9823c0, base=<optimized out>, callable=0x7f547f13b370, vargs=0x7fffcecdd360) at ./Modules/abstract.h:734
#112 0x00007f547ed4ef08 in _PyObject_CallMethodIdObjArgs (obj=0x0, name=<optimized out>) at ./Modules/abstract.h:825
#113 0x00007f547ed4e7da in import_find_and_load (abs_name=0x7f5470c46370, abs_name@entry=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=0x9823c0, tstate@entry=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/pylifecycle.c:1521
#114 PyImport_ImportModuleLevelObject (name=0x7f5470c46370, globals=<optimized out>, locals=<optimized out>, fromlist=0x7f547efa5ae0 <_Py_NoneStruct>, level=0)
--Type <RET> for more, q to quit, c to continue without paging--
    at Objects/pylifecycle.c:1622
#115 0x00007f547ed3c068 in import_name (level=0x7f547f0d80d0, fromlist=0x7f547efa5ae0 <_Py_NoneStruct>, name=0x7f5470c46370, f=<optimized out>, tstate=<optimized out>)
    at Objects/ceval_gil.h:6016
#116 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, throwflag=<optimized out>) at Objects/ceval_gil.h:3695
#117 0x00007f547ed379cb in _PyEval_EvalFrame (throwflag=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    f=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>, 
    tstate=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/marshal.c:46
#118 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=0, kwnames=<optimized out>) at Objects/ceval_gil.h:5065
#119 0x00007f547edad249 in PyEval_EvalCode (co=0x7f5470befe10, globals=0x7f5470c00100, locals=0x7f5470c00100) at Objects/ceval_gil.h:1134
#120 0x00007f547edbd9e3 in run_eval_code_obj (tstate=0x9823c0, co=0x7f5470befe10, globals=0x7f5470c00100, locals=0x7f5470c00100) at Modules/find.h:1291
#121 0x00007f547edb96ea in run_mod (mod=<optimized out>, filename=<optimized out>, globals=0x7f5470c00100, locals=0x7f5470c00100, flags=<optimized out>, arena=<optimized out>)
    at Modules/find.h:1312
#122 0x00007f547edb17cd in PyRun_StringFlags (str=<optimized out>, start=257, globals=0x7f5470c00100, locals=0x7f5470c00100, flags=0x7fffcecdd8a0) at Modules/find.h:1183
#123 0x00007f547edb172c in PyRun_SimpleStringFlags (command=0x7f5470c12a10 "import waLBerla\n", flags=0x7fffcecdd8a0) at Modules/find.h:503
#124 0x00007f547edc9c7b in pymain_run_command (command=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at Objects/fileutils.c:248
#125 pymain_run_python (exitcode=0x7fffcecdd894) at Objects/fileutils.c:578
#126 Py_RunMain () at Objects/fileutils.c:666
#127 0x00007f547ed9ff67 in Py_BytesMain (argc=<optimized out>, argv=<optimized out>) at Objects/fileutils.c:720
#128 0x00007f547dc90493 in __libc_start_main () from /lib64/libc.so.6
#129 0x000000000040106e in _start ()

And for the mpirun process itself:

(gdb) thread apply all backtrace

Thread 4 (Thread 0x7f91a7de2700 (LWP 903563)):
#0  0x00007f91a919c29f in select () from /lib64/libc.so.6
#1  0x00007f91a7deba80 in listen_thread () from /project/boegelbot/Rocky8/haswell/software/OpenMPI/4.1.4-GCC-12.2.0/lib/openmpi/mca_oob_tcp.so
#2  0x00007f91a947517a in start_thread () from /lib64/libpthread.so.0
#3  0x00007f91a91a4dc3 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f91a8608700 (LWP 903562)):
#0  0x00007f91a919c29f in select () from /lib64/libc.so.6
#1  0x00007f91a8f9e087 in listen_thread () from /project/boegelbot/Rocky8/haswell/software/PMIx/4.2.2-GCCcore-12.2.0/lib/libpmix.so.2
#2  0x00007f91a947517a in start_thread () from /lib64/libpthread.so.0
#3  0x00007f91a91a4dc3 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f91a8e13700 (LWP 903561)):
#0  0x00007f91a91a50f7 in epoll_wait () from /lib64/libc.so.6
#1  0x00007f91a9a354b3 in epoll_dispatch () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#2  0x00007f91a9a2bc95 in event_base_loop () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#3  0x00007f91a8ec17e1 in progress_engine () from /project/boegelbot/Rocky8/haswell/software/PMIx/4.2.2-GCCcore-12.2.0/lib/libpmix.so.2
#4  0x00007f91a947517a in start_thread () from /lib64/libpthread.so.0
#5  0x00007f91a91a4dc3 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f91a90a3740 (LWP 903560)):
#0  0x00007f91a9199a41 in poll () from /lib64/libc.so.6
#1  0x00007f91a9a34825 in poll_dispatch () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#2  0x00007f91a9a2bc95 in event_base_loop () from /project/boegelbot/Rocky8/haswell/software/libevent/2.1.12-GCCcore-12.2.0/lib/libevent_core-2.1.so.7
#3  0x0000000000401399 in orterun ()
#4  0x00007f91a90cb493 in __libc_start_main () from /lib64/libc.so.6
#5  0x000000000040113e in _start ()

@yosefe
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yosefe commented Dec 6, 2023

A quick search shows it could be this issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903514

@bedroge
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bedroge commented Dec 12, 2023

A quick search shows it could be this issue: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903514

Thanks, I looked into this a bit, and I'm not sure if I completely understood that issue. But I tried recompiling OpenBLAS with USE_TLS=0, but that didn't make a difference. Or did you mean that it could be a similar issue, but between glibc and UCX? Is there any way I can test this somehow?

By the way, I also tried to use the same compiler toolchain but with an older UCX version (1.10.0), and that did work fine.

@yosefe
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yosefe commented Dec 12, 2023

A quick search shows it could be this issue: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903514

Thanks, I looked into this a bit, and I'm not sure if I completely understood that issue. But I tried recompiling OpenBLAS with USE_TLS=0, but that didn't make a difference. Or did you mean that it could be a similar issue, but between glibc and UCX? Is there any way I can test this somehow?

By the way, I also tried to use the same compiler toolchain but with an older UCX version (1.10.0), and that did work fine.

it seems like an issue between glibc and UCX: a deadlock between reading TLS value from one thread and dlclose() from another thread. dlclose() takes TLS lock, which calls UCX destructor, which tries to stop a thread that is reading TLS and stuck on the TLS lock.
One workaround I can think of is that the main thread would wait for the async thread to get past the point of reading TLS value when spawning a new thread, and before returning to main thread flow and allowing dlclose() to happen.
UCX version 1.10.0 did not use TLS.

@bedroge bedroge mentioned this issue Dec 12, 2023
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