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  1. >>> from mxnet import nd
  2. >>> a = nd.arange(20).reshape((10, 2))
  3. >>> b = nd.arange(10).reshape((10, 1))
  4. >>> nd.stack(a, b)
  5. [12:09:05] /Users/travis/build/dmlc/mxnet-distro/mxnet-build/dmlc-core/include/dmlc/logging.h:308: [12:09:05] include/mxnet/./tensor_blob.h:276: Check failed: this->shape_.Size() == shape.Size() (10 vs. 20) TBlob.get_with_shape: new and old shape do not match total elements
  6.  
  7. Stack trace returned 10 entries:
  8. [bt] (0) 0 libmxnet.so 0x000000010f0d1898 _ZN4dmlc15LogMessageFatalD2Ev + 40
  9. [bt] (1) 1 libmxnet.so 0x000000010f0f4797 _ZNK5mxnet5TBlob14get_with_shapeIN7mshadow3cpuELi3EfEENS2_6TensorIT_XT0_ET1_EERKNS2_5ShapeIXT0_EEEPNS2_6StreamIS5_EE + 807
  10. [bt] (2) 2 libmxnet.so 0x000000010ff0fd9f _ZN5mxnet2op14StackOpForwardIN7mshadow3cpuEEEvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNSt3__16vectorINS_5TBlobENSB_9allocatorISD_EEEERKNSC_INS_9OpReqTypeENSE_ISJ_EEEESI_ + 5935
  11. [bt] (3) 3 libmxnet.so 0x000000011005b40b _ZZN5mxnet10imperative12PushFComputeERKNSt3__18functionIFvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNS1_6vectorINS_5TBlobENS1_9allocatorISB_EEEERKNSA_INS_9OpReqTypeENSC_ISH_EEEESG_EEEPKNS3_2OpES6_RKNS_7ContextERKNSA_IPNS_6engine3VarENSC_ISY_EEEES12_RKNSA_INS_8ResourceENSC_IS13_EEEERKNSA_IPNS_7NDArrayENSC_IS19_EEEES1D_RKNSA_IjNSC_IjEEEESL_ENKUlNS_10RunContextEE_clES1I_ + 571
  12. [bt] (4) 4 libmxnet.so 0x000000010fff4f32 _ZNSt3__110__function6__funcIZN5mxnet6engine14ThreadedEngine8PushSyncENS_8functionIFvNS2_10RunContextEEEENS2_7ContextERKNS_6vectorIPNS3_3VarENS_9allocatorISC_EEEESH_NS2_10FnPropertyEiPKcE3$_1NSD_ISL_EEFvS6_NS3_18CallbackOnCompleteEEEclEOS6_OSN_ + 50
  13. [bt] (5) 5 libmxnet.so 0x000000010fff7812 _ZN5mxnet6engine14ThreadedEngine15ExecuteOprBlockENS_10RunContextEPNS0_8OprBlockE + 386
  14. [bt] (6) 6 libmxnet.so 0x000000010fffa691 _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZZN5mxnet6engine23ThreadedEnginePerDevice13PushToExecuteEPNS4_8OprBlockEbENKUlvE_clEvEUlNS_10shared_ptrINS4_10ThreadPool11SimpleEventEEEE_SC_EEEvDpOT_ + 145
  15. [bt] (7) 7 libmxnet.so 0x000000010fff8249 _ZNSt3__114__thread_proxyINS_5tupleIJNS_8functionIFvNS_10shared_ptrIN5mxnet6engine10ThreadPool11SimpleEventEEEEEES8_EEEEEPvSC_ + 137
  16. [bt] (8) 8 libsystem_pthread.dylib 0x00007fffc391793b _pthread_body + 180
  17. [bt] (9) 9 libsystem_pthread.dylib 0x00007fffc3917887 _pthread_body + 0
  18.  
  19. [12:09:05] /Users/travis/build/dmlc/mxnet-distro/mxnet-build/dmlc-core/include/dmlc/logging.h:308: [12:09:05] src/engine/./threaded_engine.h:359: [12:09:05] include/mxnet/./tensor_blob.h:276: Check failed: this->shape_.Size() == shape.Size() (10 vs. 20) TBlob.get_with_shape: new and old shape do not match total elements
  20.  
  21. Stack trace returned 10 entries:
  22. [bt] (0) 0 libmxnet.so 0x000000010f0d1898 _ZN4dmlc15LogMessageFatalD2Ev + 40
  23. [bt] (1) 1 libmxnet.so 0x000000010f0f4797 _ZNK5mxnet5TBlob14get_with_shapeIN7mshadow3cpuELi3EfEENS2_6TensorIT_XT0_ET1_EERKNS2_5ShapeIXT0_EEEPNS2_6StreamIS5_EE + 807
  24. [bt] (2) 2 libmxnet.so 0x000000010ff0fd9f _ZN5mxnet2op14StackOpForwardIN7mshadow3cpuEEEvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNSt3__16vectorINS_5TBlobENSB_9allocatorISD_EEEERKNSC_INS_9OpReqTypeENSE_ISJ_EEEESI_ + 5935
  25. [bt] (3) 3 libmxnet.so 0x000000011005b40b _ZZN5mxnet10imperative12PushFComputeERKNSt3__18functionIFvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNS1_6vectorINS_5TBlobENS1_9allocatorISB_EEEERKNSA_INS_9OpReqTypeENSC_ISH_EEEESG_EEEPKNS3_2OpES6_RKNS_7ContextERKNSA_IPNS_6engine3VarENSC_ISY_EEEES12_RKNSA_INS_8ResourceENSC_IS13_EEEERKNSA_IPNS_7NDArrayENSC_IS19_EEEES1D_RKNSA_IjNSC_IjEEEESL_ENKUlNS_10RunContextEE_clES1I_ + 571
  26. [bt] (4) 4 libmxnet.so 0x000000010fff4f32 _ZNSt3__110__function6__funcIZN5mxnet6engine14ThreadedEngine8PushSyncENS_8functionIFvNS2_10RunContextEEEENS2_7ContextERKNS_6vectorIPNS3_3VarENS_9allocatorISC_EEEESH_NS2_10FnPropertyEiPKcE3$_1NSD_ISL_EEFvS6_NS3_18CallbackOnCompleteEEEclEOS6_OSN_ + 50
  27. [bt] (5) 5 libmxnet.so 0x000000010fff7812 _ZN5mxnet6engine14ThreadedEngine15ExecuteOprBlockENS_10RunContextEPNS0_8OprBlockE + 386
  28. [bt] (6) 6 libmxnet.so 0x000000010fffa691 _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZZN5mxnet6engine23ThreadedEnginePerDevice13PushToExecuteEPNS4_8OprBlockEbENKUlvE_clEvEUlNS_10shared_ptrINS4_10ThreadPool11SimpleEventEEEE_SC_EEEvDpOT_ + 145
  29. [bt] (7) 7 libmxnet.so 0x000000010fff8249 _ZNSt3__114__thread_proxyINS_5tupleIJNS_8functionIFvNS_10shared_ptrIN5mxnet6engine10ThreadPool11SimpleEventEEEEEES8_EEEEEPvSC_ + 137
  30. [bt] (8) 8 libsystem_pthread.dylib 0x00007fffc391793b _pthread_body + 180
  31. [bt] (9) 9 libsystem_pthread.dylib 0x00007fffc3917887 _pthread_body + 0
  32.  
  33. A fatal error occurred in asynchronous engine operation. If you do not know what caused this error, you can try set environment variable MXNET_ENGINE_TYPE to NaiveEngine and run with debugger (i.e. gdb). This will force all operations to be synchronous and backtrace will give you the series of calls that lead to this error. Remember to set MXNET_ENGINE_TYPE back to empty after debugging.
  34.  
  35. Stack trace returned 7 entries:
  36. [bt] (0) 0 libmxnet.so 0x000000010f0d1898 _ZN4dmlc15LogMessageFatalD2Ev + 40
  37. [bt] (1) 1 libmxnet.so 0x000000010fff7aeb _ZN5mxnet6engine14ThreadedEngine15ExecuteOprBlockENS_10RunContextEPNS0_8OprBlockE + 1115
  38. [bt] (2) 2 libmxnet.so 0x000000010fffa691 _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZZN5mxnet6engine23ThreadedEnginePerDevice13PushToExecuteEPNS4_8OprBlockEbENKUlvE_clEvEUlNS_10shared_ptrINS4_10ThreadPool11SimpleEventEEEE_SC_EEEvDpOT_ + 145
  39. [bt] (3) 3 libmxnet.so 0x000000010fff8249 _ZNSt3__114__thread_proxyINS_5tupleIJNS_8functionIFvNS_10shared_ptrIN5mxnet6engine10ThreadPool11SimpleEventEEEEEES8_EEEEEPvSC_ + 137
  40. [bt] (4) 4 libsystem_pthread.dylib 0x00007fffc391793b _pthread_body + 180
  41. [bt] (5) 5 libsystem_pthread.dylib 0x00007fffc3917887 _pthread_body + 0
  42. [bt] (6) 6 libsystem_pthread.dylib 0x00007fffc391708d thread_start + 13
  43.  
  44. libc++abi.dylib: terminating with uncaught exception of type dmlc::Error: [12:09:05] src/engine/./threaded_engine.h:359: [12:09:05] include/mxnet/./tensor_blob.h:276: Check failed: this->shape_.Size() == shape.Size() (10 vs. 20) TBlob.get_with_shape: new and old shape do not match total elements
  45.  
  46. Stack trace returned 10 entries:
  47. [bt] (0) 0 libmxnet.so 0x000000010f0d1898 _ZN4dmlc15LogMessageFatalD2Ev + 40
  48. [bt] (1) 1 libmxnet.so 0x000000010f0f4797 _ZNK5mxnet5TBlob14get_with_shapeIN7mshadow3cpuELi3EfEENS2_6TensorIT_XT0_ET1_EERKNS2_5ShapeIXT0_EEEPNS2_6StreamIS5_EE + 807
  49. [bt] (2) 2 libmxnet.so 0x000000010ff0fd9f _ZN5mxnet2op14StackOpForwardIN7mshadow3cpuEEEvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNSt3__16vectorINS_5TBlobENSB_9allocatorISD_EEEERKNSC_INS_9OpReqTypeENSE_ISJ_EEEESI_ + 5935
  50. [bt] (3) 3 libmxnet.so 0x000000011005b40b _ZZN5mxnet10imperative12PushFComputeERKNSt3__18functionIFvRKN4nnvm9NodeAttrsERKNS_9OpContextERKNS1_6vectorINS_5TBlobENS1_9allocatorISB_EEEERKNSA_INS_9OpReqTypeENSC_ISH_EEEESG_EEEPKNS3_2OpES6_RKNS_7ContextERKNSA_IPNS_6engine3VarENSC_ISY_EEEES12_RKNSA_INS_8ResourceENSC_IS13_EEEERKNSA_IPNS_7NDArrayENSC_IS19_EEEES1D_RKNSA_IjNSC_IjEEEESL_ENKUlNS_10RunContextEE_clES1I_ + 571
  51. [bt] (4) 4 libmxnet.so 0x000000010fff4f32 _ZNSt3__110__function6__funcIZN5mxnet6engine14ThreadedEngine8PushSyncENS_8functionIFvNS2_10RunContextEEEENS2_7ContextERKNS_6vectorIPNS3_3VarENS_9allocatorISC_EEEESH_NS2_10FnPropertyEiPKcE3$_1NSD_ISL_EEFvS6_NS3_18CallbackOnCompleteEEEclEOS6_OSN_ + 50
  52. [bt] (5) 5 libmxnet.so 0x000000010fff7812 _ZN5mxnet6engine14ThreadedEngine15ExecuteOprBlockENS_10RunContextEPNS0_8OprBlockE + 386
  53. [bt] (6) 6 libmxnet.so 0x000000010fffa691 _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZZN5mxnet6engine23ThreadedEnginePerDevice13PushToExecuteEPNS4_8OprBlockEbENKUlvE_clEvEUlNS_10shared_ptrINS4_10ThreadPool11SimpleEventEEEE_SC_EEEvDpOT_ + 145
  54. [bt] (7) 7 libmxnet.so 0x000000010fff8249 _ZNSt3__114__thread_proxyINS_5tupleIJNS_8functionIFvNS_10shared_ptrIN5mxnet6engine10ThreadPool11SimpleEventEEEEEES8_EEEEEPvSC_ + 137
  55. [bt] (8) 8 libsystem_pthread.dylib 0x00007fffc391793b _pthread_body + 180
  56. [bt] (9) 9 libsystem_pthread.dylib 0x00007fffc3917887 _pthread_body + 0
  57.  
  58. A fatal error occurred in asynchronous engine operation. If you do not know what caused this error, you can try set environment variable MXNET_ENGINE_TYPE to NaiveEngine and run with debugger (i.e. gdb). This will force all operations to be synchronous and backtrace will give you the series of calls that lead to this error. Remember to set MXNET_ENGINE_TYPE back to empty after debugging.
  59.  
  60. Stack trace returned 7 entries:
  61. [bt] (0) 0 libmxnet.so 0x000000010f0d1898 _ZN4dmlc15LogMessageFatalD2Ev + 40
  62. [bt] (1) 1 libmxnet.so 0x000000010fff7aeb _ZN5mxnet6engine14ThreadedEngine15ExecuteOprBlockENS_10RunContextEPNS0_8OprBlockE + 1115
  63. [bt] (2) 2 libmxnet.so 0x000000010fffa691 _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZZN5mxnet6engine23ThreadedEnginePerDevice13PushToExecuteEPNS4_8OprBlockEbENKUlvE_clEvEUlNS_10shared_ptrINS4_10ThreadPool11SimpleEventEEEE_SC_EEEvDpOT_ + 145
  64. [bt] (3) 3 libmxnet.so 0x000000010fff8249 _ZNSt3__114__thread_proxyINS_5tupleIJNS_8functionIFvNS_10shared_ptrIN5mxnet6engine10ThreadPool11SimpleEventEEEEEES8_EEEEEPvSC_ + 137
  65. [bt] (4) 4 libsystem_pthread.dylib 0x00007fffc391793b _pthread_body + 180
  66. [bt] (5) 5 libsystem_pthread.dylib 0x00007fffc3917887 _pthread_body + 0
  67. [bt] (6) 6 libsystem_pthread.dylib 0x00007fffc391708d thread_start + 13
  68.  
  69. Abort trap: 6
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