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allow dynamic axis for operator space_to_depth. #3724

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allow dynamic axis for operator space_to_depth. #3724

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2 changes: 1 addition & 1 deletion Source/CNTKv2LibraryDll/Function.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2039,7 +2039,7 @@ namespace CNTK
NDShape inputShape = input.Shape();
if (inputShape.Rank() != 3)
LogicError("SpaceToDepth: Input operand (shape: %S) must be a 3-dimensional tensor, e.g. a 2D image with channels.", inputShape.AsString().c_str());
if ((inputShape[0] % blockSize != 0) || (inputShape[1] % blockSize != 0))
if ((inputShape[0] % blockSize != 0 && inputShape[0] != NDShape::FreeDimension) || (inputShape[1] % blockSize != 0 && inputShape[1] != NDShape::FreeDimension))
LogicError("SpaceToDepth: All spatial dimensions in the operand (%zu x %zu) must be divisible by blocksize (%zu).", inputShape[0], inputShape[1], blockSize);
}

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