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Floating point exception (core dump)

code crash during the training

Core was generated by `python -m emg.app --model cnn --gesture_num 8 --lr 0.01 --epoch 60 --train_batc'.

Program terminated with signal SIGFPE, Arithmetic exception.

#0  0x00007f27da86a45a in c10::cuda::CUDACachingAllocator::THCCachingAllocator::malloc(void**, unsigned long, CUstream_st*) () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libc10_cuda.so
[Current thread is 1 (Thread 0x7f28240fb740 (LWP 4325))]
(gdb) bt
#0  0x00007f27da86a45a in c10::cuda::CUDACachingAllocator::THCCachingAllocator::malloc(void**, unsigned long, CUstream_st*) () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libc10_cuda.so
#1  0x00007f27da86b347 in c10::cuda::CUDACachingAllocator::CudaCachingAllocator::allocate(unsigned long) const () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libc10_cuda.so
#2  0x00007f27e6828706 in THCStorage_resize ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2_gpu.so
#3  0x00007f27e683ee68 in THCTensor_resizeNd ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2_gpu.so
#4  0x00007f27e683fcd8 in THCudaTensor_resize1d ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2_gpu.so
#5  0x00007f27e778a500 in THNN_CudaClassNLLCriterion_updateOutput ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2_gpu.so
#6  0x00007f27e67f557b in at::CUDAType::_thnn_nll_loss_forward(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) const ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2_gpu.so
#7  0x00007f27e2a344da in at::native::nll_loss_forward(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2.so
#8  0x00007f27e2dd35ac in at::TypeDefault::nll_loss_forward(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) const ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2.so
#9  0x00007f27db1329b9 in torch::autograd::VariableType::nll_loss_forward(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) const ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libtorch.so.1
#10 0x00007f27e2a343aa in at::native::nll_loss(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2.so
#11 0x00007f27e2dd375c in at::TypeDefault::nll_loss(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) const () from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libcaffe2.so
#12 0x00007f27daf1dc53 in torch::autograd::VariableType::nll_loss(at::Tensor const&, at::Tensor const&, at::Tensor const&, long, long) const ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libtorch.so.1
#13 0x00007f28111ee1ff in torch::autograd::THPVariable_nll_loss(_object*, _object*, _object*) ()
   from /home/teng/miniconda3/envs/py36/lib/python3.6/site-packages/torch/lib/libtorch_python.so
#14 0x000056308af36744 in _PyCFunction_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/methodobject.c:231
#15 0x000056308afbd42c in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4851
#16 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#17 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#18 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#19 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#20 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#21 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#22 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#23 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#24 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#25 0x000056308afb6bfe in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#26 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#27 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#28 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#29 0x000056308afb753b in _PyFunction_FastCall (globals=<optimised out>, nargs=1, args=<optimised out>, 
    co=<optimised out>) at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4933
#30 fast_function () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4968
#31 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#32 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#33 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#34 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#35 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#36 0x000056308afe3147 in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3351
#37 0x000056308afb6bfe in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#38 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#39 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#40 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#41 0x000056308afb753b in _PyFunction_FastCall (globals=<optimised out>, nargs=1, args=<optimised out>, 
    co=<optimised out>) at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4933
#42 fast_function () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4968
#43 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#44 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#45 0x000056308afb8289 in _PyEval_EvalCodeWithName (qualname=0x0, name=<optimised out>, closure=0x0, 
    kwdefs=0x0, defcount=0, defs=0x0, kwstep=2, kwcount=<optimised out>, kwargs=0x7f2823f608a8, 
    kwnames=0x7f2823f608a0, argcount=<optimised out>, args=0x7f2822325cd8, locals=0x0, 
    globals=<optimised out>, _co=0x7f2822500db0)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#46 PyEval_EvalCodeEx () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4187
#47 0x000056308afb91a6 in function_call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/funcobject.c:604
#48 0x000056308af3654e in PyObject_Call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2261
#49 0x000056308afe3a6c in do_call_core (kwdict=0x7f28224dbb40, callargs=0x7f28240bb048, func=0x7f28223082f0)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5120
#50 _PyEval_EvalFrameDefault () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3404
#51 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#52 0x000056308afb7e6a in _PyFunction_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5084
#53 0x000056308af36b0f in _PyObject_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2310
#54 0x000056308af3b6a3 in _PyObject_Call_Prepend ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2373
#55 0x000056308af3654e in PyObject_Call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2261
#56 0x000056308afe3a6c in do_call_core (kwdict=0x7f2822302ee8, callargs=0x7f282409cd30, func=0x7f28240ae348)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5120
#57 _PyEval_EvalFrameDefault () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3404
#58 0x000056308afb753b in _PyFunction_FastCall (globals=<optimised out>, nargs=2, args=<optimised out>, 
    co=<optimised out>) at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4933
#59 fast_function () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4968
#60 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#61 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#62 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#63 0x000056308afb7e6a in _PyFunction_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5084
#64 0x000056308af36b0f in _PyObject_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2310
#65 0x000056308af3b6a3 in _PyObject_Call_Prepend ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2373
#66 0x000056308af3654e in PyObject_Call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2261
#67 0x000056308afe3a6c in do_call_core (kwdict=0x7f28224bb630, callargs=0x7f28240bb048, func=0x7f2822561148)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5120
#68 _PyEval_EvalFrameDefault () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3404
#69 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#70 0x000056308afb7c4c in _PyFunction_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:5084
#71 0x000056308af36b0f in _PyObject_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2310
#72 0x000056308af3b6a3 in _PyObject_Call_Prepend ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2373
#73 0x000056308af3654e in PyObject_Call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2261
#74 0x000056308af90a91 in slot_tp_call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/typeobject.c:6207
#75 0x000056308af3692b in _PyObject_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2331
#76 0x000056308afbd57e in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4875
#77 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#78 0x000056308afb8289 in _PyEval_EvalCodeWithName (qualname=0x0, name=<optimised out>, closure=0x0, 
    kwdefs=0x0, defcount=0, defs=0x0, kwstep=2, kwcount=<optimised out>, kwargs=0x0, kwnames=0x0, 
    argcount=0, args=0x0, locals=0x7f28240711f8, globals=0x7f28240711f8, _co=0x7f282252c030)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#79 PyEval_EvalCodeEx () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4187
#80 0x000056308afb901c in PyEval_EvalCode (co=co@entry=0x7f282252c030, 
    globals=globals@entry=0x7f28240711f8, locals=locals@entry=0x7f28240711f8)
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:731
#81 0x000056308afdfd97 in builtin_exec_impl.isra.11 (locals=0x7f28240711f8, globals=0x7f28240711f8, 
    source=0x7f282252c030) at /tmp/build/80754af9/python_1546130271559/work/Python/bltinmodule.c:983
#82 builtin_exec () at /tmp/build/80754af9/python_1546130271559/work/Python/clinic/bltinmodule.c.h:283
#83 0x000056308af36681 in _PyCFunction_FastCallDict ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/methodobject.c:234
#84 0x000056308afbd42c in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4851
#85 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#86 0x000056308afb68e4 in _PyEval_EvalCodeWithName ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#87 0x000056308afb7771 in fast_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4992
#88 0x000056308afbd505 in call_function ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4872
#89 0x000056308afe238a in _PyEval_EvalFrameDefault ()
    at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:3335
#90 0x000056308afb8289 in _PyEval_EvalCodeWithName (qualname=0x0, name=<optimised out>, closure=0x0, 
    kwdefs=0x0, defcount=1, defs=0x7f2822525060, kwstep=2, kwcount=<optimised out>, kwargs=0x0, 
    kwnames=0x0, argcount=<optimised out>, args=0x56308bd53c80, locals=0x0, globals=<optimised out>, 
    _co=0x7f2822517b70) at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4166
#91 PyEval_EvalCodeEx () at /tmp/build/80754af9/python_1546130271559/work/Python/ceval.c:4187
#92 0x000056308afb9109 in function_call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/funcobject.c:604
#93 0x000056308af3654e in PyObject_Call ()
    at /tmp/build/80754af9/python_1546130271559/work/Objects/abstract.c:2261
#94 0x000056308b034b07 in RunModule () at /tmp/build/80754af9/python_1546130271559/work/Modules/main.c:215
#95 0x000056308b03f1b6 in Py_Main () at /tmp/build/80754af9/python_1546130271559/work/Modules/main.c:752
#96 0x000056308af0802e in main () at /tmp/build/80754af9/python_1546130271559/work/Programs/python.c:69
#97 0x00007f2823902b97 in __libc_start_main (main=0x56308af07f40 <main>, argc=19, argv=0x7ffd1ac92a38, 
    init=<optimised out>, fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7ffd1ac92a28)
    at ../csu/libc-start.c:310
#98 0x000056308afe8e0e in _start () at ../sysdeps/x86_64/elf/start.S:103

Model Selection

要根据validation score来选择hyperparameter，根据test score来选择hyperparameter就是在test set上过拟合

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