Train with multiple GPU - errors

[jesusbft]

Trying train with multiple GPU, not worked:

party -d cuda:0,cuda:1,cuda:2,cuda:3 train -q early --lag 20 --augment -t dataset/train.lst -e dataset/val.lst -B 20 --workers 16 --threads 16 -o models/Portuguese

GPU available: True (cuda), used: True
TPU available: False, using: 0 TPU cores
HPU available: False, using: 0 HPUs
Trainer(val_check_interval=1.0) was configured so validation will run at the end of the training epoch..
Loading from huggingface hub 10.5281/zenodo.14616981.
Initializing distributed: GLOBAL_RANK: 0, MEMBER: 1/4
Loading from huggingface hub 10.5281/zenodo.14616981.
Loading from huggingface hub 10.5281/zenodo.14616981.
Loading from huggingface hub 10.5281/zenodo.14616981.
Initializing distributed: GLOBAL_RANK: 2, MEMBER: 3/4
Initializing distributed: GLOBAL_RANK: 1, MEMBER: 2/4
Initializing distributed: GLOBAL_RANK: 3, MEMBER: 4/4

distributed_backend=nccl
All distributed processes registered. Starting with 4 processes

[rank1]:[E131 16:15:16.686699493 ProcessGroupNCCL.cpp:616] [Rank 1] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800004 milliseconds before timing out.
[rank3]:[E131 16:15:16.688074713 ProcessGroupNCCL.cpp:616] [Rank 3] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800005 milliseconds before timing out.
[rank3]:[E131 16:15:16.698386699 ProcessGroupNCCL.cpp:1785] [PG ID 0 PG GUID 0(default_pg) Rank 3] Exception (either an error or timeout) detected by watchdog at work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank3]:[E131 16:15:16.698412854 ProcessGroupNCCL.cpp:1834] [PG ID 0 PG GUID 0(default_pg) Rank 3] Timeout at NCCL work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank3]:[E131 16:15:16.698420406 ProcessGroupNCCL.cpp:630] [Rank 3] Some NCCL operations have failed or timed out. Due to the asynchronous nature of CUDA kernels, subsequent GPU operations might run on corrupted/incomplete data.
[rank3]:[E131 16:15:16.698428398 ProcessGroupNCCL.cpp:636] [Rank 3] To avoid data inconsistency, we are taking the entire process down.
[rank1]:[E131 16:15:16.698436714 ProcessGroupNCCL.cpp:1785] [PG ID 0 PG GUID 0(default_pg) Rank 1] Exception (either an error or timeout) detected by watchdog at work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank1]:[E131 16:15:16.698474862 ProcessGroupNCCL.cpp:1834] [PG ID 0 PG GUID 0(default_pg) Rank 1] Timeout at NCCL work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank1]:[E131 16:15:16.698493613 ProcessGroupNCCL.cpp:630] [Rank 1] Some NCCL operations have failed or timed out. Due to the asynchronous nature of CUDA kernels, subsequent GPU operations might run on corrupted/incomplete data.
[rank1]:[E131 16:15:16.698508402 ProcessGroupNCCL.cpp:636] [Rank 1] To avoid data inconsistency, we are taking the entire process down.
[rank3]:[E131 16:15:16.705394686 ProcessGroupNCCL.cpp:1595] [PG ID 0 PG GUID 0(default_pg) Rank 3] Process group watchdog thread terminated with exception: [Rank 3] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800005 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7c9529a8a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x7c94dedcc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x7c94dedd3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x7c94dedd561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x7c952b29a5c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x7c952bf4aac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x7c952bfdba04 in /lib/x86_64-linux-gnu/libc.so.6)

terminate called after throwing an instance of 'c10::DistBackendError'
what(): [PG ID 0 PG GUID 0(default_pg) Rank 3] Process group watchdog thread terminated with exception: [Rank 3] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800005 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7c9529a8a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x7c94dedcc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x7c94dedd3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x7c94dedd561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x7c952b29a5c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x7c952bf4aac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x7c952bfdba04 in /lib/x86_64-linux-gnu/libc.so.6)

Exception raised from ncclCommWatchdog at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:1601 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7c9529a8a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: + 0xe4271b (0x7c94dea4271b in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: + 0x145c0 (0x7c952b29a5c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #3: + 0x94ac3 (0x7c952bf4aac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #4: clone + 0x44 (0x7c952bfdba04 in /lib/x86_64-linux-gnu/libc.so.6)

[rank1]:[E131 16:15:16.707598872 ProcessGroupNCCL.cpp:1595] [PG ID 0 PG GUID 0(default_pg) Rank 1] Process group watchdog thread terminated with exception: [Rank 1] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800004 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x70be4e97e446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x70be03dcc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x70be03dd3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x70be03dd561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x70be501695c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x70be50e19ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x70be50eaaa04 in /lib/x86_64-linux-gnu/libc.so.6)

terminate called after throwing an instance of 'c10::DistBackendError'
what(): [PG ID 0 PG GUID 0(default_pg) Rank 1] Process group watchdog thread terminated with exception: [Rank 1] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800004 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x70be4e97e446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x70be03dcc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x70be03dd3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x70be03dd561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x70be501695c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x70be50e19ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x70be50eaaa04 in /lib/x86_64-linux-gnu/libc.so.6)

Exception raised from ncclCommWatchdog at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:1601 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x70be4e97e446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: + 0xe4271b (0x70be03a4271b in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: + 0x145c0 (0x70be501695c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #3: + 0x94ac3 (0x70be50e19ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #4: clone + 0x44 (0x70be50eaaa04 in /lib/x86_64-linux-gnu/libc.so.6)

[rank2]:[E131 16:15:16.729492418 ProcessGroupNCCL.cpp:616] [Rank 2] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800047 milliseconds before timing out.
[rank2]:[E131 16:15:16.729856038 ProcessGroupNCCL.cpp:1785] [PG ID 0 PG GUID 0(default_pg) Rank 2] Exception (either an error or timeout) detected by watchdog at work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank2]:[E131 16:15:16.729864759 ProcessGroupNCCL.cpp:1834] [PG ID 0 PG GUID 0(default_pg) Rank 2] Timeout at NCCL work: 1, last enqueued NCCL work: 1, last completed NCCL work: -1.
[rank2]:[E131 16:15:16.729869534 ProcessGroupNCCL.cpp:630] [Rank 2] Some NCCL operations have failed or timed out. Due to the asynchronous nature of CUDA kernels, subsequent GPU operations might run on corrupted/incomplete data.
[rank2]:[E131 16:15:16.729873967 ProcessGroupNCCL.cpp:636] [Rank 2] To avoid data inconsistency, we are taking the entire process down.
[rank2]:[E131 16:15:16.733099300 ProcessGroupNCCL.cpp:1595] [PG ID 0 PG GUID 0(default_pg) Rank 2] Process group watchdog thread terminated with exception: [Rank 2] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800047 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7029f4ee6446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x7029aa1cc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x7029aa1d3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x7029aa1d561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x7029f67355c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x7029f73e5ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x7029f7476a04 in /lib/x86_64-linux-gnu/libc.so.6)

terminate called after throwing an instance of 'c10::DistBackendError'
what(): [PG ID 0 PG GUID 0(default_pg) Rank 2] Process group watchdog thread terminated with exception: [Rank 2] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=1, OpType=BROADCAST, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800047 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7029f4ee6446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x7029aa1cc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x7029aa1d3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x7029aa1d561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x7029f67355c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x7029f73e5ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x7029f7476a04 in /lib/x86_64-linux-gnu/libc.so.6)

Exception raised from ncclCommWatchdog at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:1601 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x7029f4ee6446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: + 0xe4271b (0x7029a9e4271b in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: + 0x145c0 (0x7029f67355c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #3: + 0x94ac3 (0x7029f73e5ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #4: clone + 0x44 (0x7029f7476a04 in /lib/x86_64-linux-gnu/libc.so.6)

[rank0]:[E131 16:15:16.794976876 ProcessGroupNCCL.cpp:616] [Rank 0] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=3, OpType=ALLREDUCE, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800093 milliseconds before timing out.
[rank0]:[E131 16:15:16.796087449 ProcessGroupNCCL.cpp:1785] [PG ID 0 PG GUID 0(default_pg) Rank 0] Exception (either an error or timeout) detected by watchdog at work: 3, last enqueued NCCL work: 3, last completed NCCL work: 2.
[rank0]:[E131 16:15:16.796125481 ProcessGroupNCCL.cpp:1834] [PG ID 0 PG GUID 0(default_pg) Rank 0] Timeout at NCCL work: 3, last enqueued NCCL work: 3, last completed NCCL work: 2.
[rank0]:[E131 16:15:16.796148045 ProcessGroupNCCL.cpp:630] [Rank 0] Some NCCL operations have failed or timed out. Due to the asynchronous nature of CUDA kernels, subsequent GPU operations might run on corrupted/incomplete data.
[rank0]:[E131 16:15:16.796161145 ProcessGroupNCCL.cpp:636] [Rank 0] To avoid data inconsistency, we are taking the entire process down.
[rank0]:[E131 16:15:16.801508681 ProcessGroupNCCL.cpp:1595] [PG ID 0 PG GUID 0(default_pg) Rank 0] Process group watchdog thread terminated with exception: [Rank 0] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=3, OpType=ALLREDUCE, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800093 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x76bb3f18a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x76baf45cc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x76baf45d3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x76baf45d561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x76bb409f45c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x76bb416a4ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x76bb41735a04 in /lib/x86_64-linux-gnu/libc.so.6)

terminate called after throwing an instance of 'c10::DistBackendError'
what(): [PG ID 0 PG GUID 0(default_pg) Rank 0] Process group watchdog thread terminated with exception: [Rank 0] Watchdog caught collective operation timeout: WorkNCCL(SeqNum=3, OpType=ALLREDUCE, NumelIn=1, NumelOut=1, Timeout(ms)=1800000) ran for 1800093 milliseconds before timing out.
Exception raised from checkTimeout at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:618 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x76bb3f18a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: c10d::ProcessGroupNCCL::WorkNCCL::checkTimeout(std::optional<std::chrono::duration<long, std::ratio<1l, 1000l> > >) + 0x282 (0x76baf45cc772 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: c10d::ProcessGroupNCCL::watchdogHandler() + 0x233 (0x76baf45d3bb3 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #3: c10d::ProcessGroupNCCL::ncclCommWatchdog() + 0x14d (0x76baf45d561d in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #4: + 0x145c0 (0x76bb409f45c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #5: + 0x94ac3 (0x76bb416a4ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #6: clone + 0x44 (0x76bb41735a04 in /lib/x86_64-linux-gnu/libc.so.6)

Exception raised from ncclCommWatchdog at ../torch/csrc/distributed/c10d/ProcessGroupNCCL.cpp:1601 (most recent call first):
frame #0: c10::Error::Error(c10::SourceLocation, std::string) + 0x96 (0x76bb3f18a446 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libc10.so)
frame #1: + 0xe4271b (0x76baf424271b in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch_cuda.so)
frame #2: + 0x145c0 (0x76bb409f45c0 in /workspace/venv/lib/python3.11/site-packages/torch/lib/libtorch.so)
frame #3: + 0x94ac3 (0x76bb416a4ac3 in /lib/x86_64-linux-gnu/libc.so.6)
frame #4: clone + 0x44 (0x76bb41735a04 in /lib/x86_64-linux-gnu/libc.so.6)

Aborted (core dumped)