test, fix sparse * dense exceptions and corner case (#61723)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/59916
This fixes two problems with sparse multiplication
- 0d-dense * sparse was creating a non-sparse output and failing.
- dense * sparse or sparse * dense is not supported, but would emit an unhelpful error message
<details>
<summary> unhelpful error message </summary>
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NotImplementedError: Could not run 'aten::_nnz' with arguments from the 'CPU' backend. This could be because the operator doesn't exist for this backend, or was omitted during the selective/custom build process (if using custom build). If you are a Facebook employee using PyTorch on mobile, please visit https://fburl.com/ptmfixes for possible resolutions. 'aten::_nnz' is only available for these backends: [SparseCPU, SparseCUDA, SparseCsrCPU, SparseCsrCUDA, BackendSelect, Python, Named, Conjugate, ADInplaceOrView, AutogradOther, AutogradCPU, AutogradCUDA, AutogradXLA, AutogradXPU, AutogradMLC, AutogradHPU, AutogradNestedTensor, AutogradPrivateUse1, AutogradPrivateUse2, AutogradPrivateUse3, Tracer, UNKNOWN_TENSOR_TYPE_ID, Autocast, Batched, VmapMode].
SparseCPU: registered at aten/src/ATen/RegisterSparseCPU.cpp:961 [kernel]
SparseCUDA: registered at aten/src/ATen/RegisterSparseCUDA.cpp:1092 [kernel]
SparseCsrCPU: registered at aten/src/ATen/RegisterSparseCsrCPU.cpp:202 [kernel]
SparseCsrCUDA: registered at aten/src/ATen/RegisterSparseCsrCUDA.cpp:229 [kernel]
BackendSelect: fallthrough registered at ../aten/src/ATen/core/BackendSelectFallbackKernel.cpp:3 [backend fallback]
Python: registered at ../aten/src/ATen/core/PythonFallbackKernel.cpp:38 [backend fallback]
Named: registered at ../aten/src/ATen/core/NamedRegistrations.cpp:7 [backend fallback]
Conjugate: registered at ../aten/src/ATen/ConjugateFallback.cpp:118 [backend fallback]
ADInplaceOrView: fallthrough registered at ../aten/src/ATen/core/VariableFallbackKernel.cpp:60 [backend fallback]
AutogradOther: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradCPU: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradCUDA: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradXLA: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradXPU: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradMLC: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradHPU: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradNestedTensor: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradPrivateUse1: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradPrivateUse2: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
AutogradPrivateUse3: registered at ../torch/csrc/autograd/generated/VariableType_2.cpp:11202 [autograd kernel]
Tracer: registered at ../torch/csrc/autograd/generated/TraceType_2.cpp:10254 [kernel]
UNKNOWN_TENSOR_TYPE_ID: fallthrough registered at ../aten/src/ATen/autocast_mode.cpp:446 [backend fallback]
Autocast: fallthrough registered at ../aten/src/ATen/autocast_mode.cpp:285 [backend fallback]
Batched: registered at ../aten/src/ATen/BatchingRegistrations.cpp:1016 [backend fallback]
VmapMode: fallthrough registered at ../aten/src/ATen/VmapModeRegistrations.cpp:33 [backend fallback]
</details>
Also added tests.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61723
Reviewed By: ezyang
Differential Revision: D29962639
Pulled By: cpuhrsch
fbshipit-source-id: 5455680ddfa91d5cc9925174d0fd3107c40f5b06
