40 lines
1003 B
Julia
40 lines
1003 B
Julia
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using MXNet
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# NDArray is row-major so by default all dimensions are reversed in MXNet.
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# MXArray tranposes when loading/storing to fix this.
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reversedims!(dest, xs) = permutedims!(dest, xs, ndims(xs):-1:1)
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immutable MXArray{N}
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data::mx.NDArray
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scratch::Array{Float32,N}
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end
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MXArray{T}(data::mx.NDArray, scratch::Array{Float32, T}) = MXArray{T}(data, scratch)
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MXArray(data::mx.NDArray) = MXArray(data, Array{Float32}(size(data)))
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MXArray(dims::Integer...) = MXArray(mx.zeros(reverse(dims)))
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Base.size(xs::MXArray) = reverse(size(xs.data))
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function Base.copy!(mx::MXArray, xs::AbstractArray)
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@assert size(mx) == size(xs)
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reversedims!(mx.scratch, xs)
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copy!(mx.data, mx.scratch)
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return mx
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end
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function Base.copy!(xs::AbstractArray, mx::MXArray)
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@assert size(xs) == size(mx)
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copy!(mx.scratch, mx.data)
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reversedims!(xs, mx.scratch)
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end
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Base.copy(mx::MXArray) = copy!(Array{Float32}(size(mx)), mx)
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function MXArray(xs::AbstractArray)
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mx = MXArray(size(xs)...)
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copy!(mx, xs)
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end
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