Exception: process 3 terminated with signal SIGKILL

[glemarivero]

Hi, when using more than 1 GPU I get the following error:

Traceback (most recent call last):
  File "projects/WSL/tools/train_net.py", line 257, in <module>
    args=(args,),
  File "DRN-WSOD-pytorch/detectron2/engine/launch.py", line 59, in launch                                                                                                                   
    daemon=False,
  File "/opt/conda/lib/python3.7/site-packages/torch/multiprocessing/spawn.py", line 199, in spawn
    return start_processes(fn, args, nprocs, join, daemon, start_method='spawn')
  File "/opt/conda/lib/python3.7/site-packages/torch/multiprocessing/spawn.py", line 157, in start_processes
    while not context.join():
  File "/opt/conda/lib/python3.7/site-packages/torch/multiprocessing/spawn.py", line 107, in join
    (error_index, name)
Exception: process 3 terminated with signal SIGKILL

Do you know what could be the problem? If I use only one GPU, I get a memory error when loading the weights.

This is my configuration:

----------------------  -------------------------------------------------------------------------------
sys.platform            linux
Python                  3.7.10 | packaged by conda-forge | (default, Feb 19 2021, 16:07:37) [GCC 9.3.0]
numpy                   1.19.5
detectron2              0.2 @/home/usr_341317_ulta_com/work/brand-detection/DRN-WSOD-pytorch/detectron2
Compiler                GCC 8.3
CUDA compiler           CUDA 11.0
detectron2 arch flags   sm_70
DETECTRON2_ENV_MODULE   <not set>
PyTorch                 1.7.1 @/opt/conda/lib/python3.7/site-packages/torch
PyTorch debug build     False
GPU available           True
GPU 0,1,2,3             Tesla V100-SXM2-16GB
CUDA_HOME               /usr/local/cuda
Pillow                  8.1.0
torchvision             0.8.2 @/opt/conda/lib/python3.7/site-packages/torchvision
torchvision arch flags  sm_35, sm_50, sm_60, sm_70, sm_75, sm_80
fvcore                  0.1.4.post20210323
cv2                     4.5.1
----------------------  -------------------------------------------------------------------------------
PyTorch built with:
  - GCC 7.3
  - C++ Version: 201402
  - Intel(R) Math Kernel Library Version 2020.0.4 Product Build 20200917 for Intel(R) 64 architecture applications
  - Intel(R) MKL-DNN v1.6.0 (Git Hash 5ef631a030a6f73131c77892041042805a06064f)
  - OpenMP 201511 (a.k.a. OpenMP 4.5)
  - NNPACK is enabled
  - CPU capability usage: AVX2
  - CUDA Runtime 11.0
  - NVCC architecture flags: -gencode;arch=compute_37,code=sm_37;-gencode;arch=compute_50,code=sm_50;-gencode;arch=compute_60,code=sm_60;-gencode;arch=compute_61,code=sm_61;-gencode;arch=compute_70,code=sm_70;-gencode;arch=compute_75,code=sm_75;-gencode;arch=compute_80,code=sm_80;-gencode;arch=compute_37,code=compute_37
  - CuDNN 8.0.5
  - Magma 2.5.2
  - Build settings: BLAS=MKL, BUILD_TYPE=Release, CXX_FLAGS= -Wno-deprecated -fvisibility-inlines-hidden -DUSE_PTHREADPOOL -fopenmp -DNDEBUG -DUSE_FBGEMM -DUSE_QNNPACK -DUSE_PYTORCH_QNNPACK -DUSE_XNNPACK -DUSE_VULKAN_WRAPPER -O2 -fPIC -Wno-narrowing -Wall -Wextra -Werror=return-type -Wno-missing-field-initializers -Wno-type-limits -Wno-array-bounds -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-parameter -Wno-unused-variable -Wno-unused-function -Wno-unused-result -Wno-unused-local-typedefs -Wno-strict-overflow -Wno-strict-aliasing -Wno-error=deprecated-declarations -Wno-stringop-overflow -Wno-psabi -Wno-error=pedantic -Wno-error=redundant-decls -Wno-error=old-style-cast -fdiagnostics-color=always -faligned-new -Wno-unused-but-set-variable -Wno-maybe-uninitialized -fno-math-errno -fno-trapping-math -Werror=format -Wno-stringop-overflow, PERF_WITH_AVX=1, PERF_WITH_AVX2=1, PERF_WITH_AVX512=1, USE_CUDA=ON, USE_EXCEPTION_PTR=1, USE_GFLAGS=OFF, USE_GLOG=OFF, USE_MKL=ON, USE_MKLDNN=ON, USE_MPI=OFF, USE_NCCL=ON, USE_NNPACK=ON, USE_OPENMP=ON, 

Thanks

[shenyunhang]

Hi. Sorry, I can't find what causes the problem. Can you run the original detectorn2 code?