linalg operators using C++

[mureva]

I would like to use the linalg operators from C++, but they don't get exposed in op.h (i'm currently using 1.7 iirc)
That need not be a problem of course, because I would guess I can get at them through mxnet::Operator. I'm just a little unclear on exactly how I would do that however.

Specifically, I want to take a tensor (batch, 4, n) of vertices V and multiply by a transformation matrix (4,4) T, so V2 = V*M (and also, elsewhere, I want to do much the same, but with the inverse of another transformation matrix).

I'm fairly sure I'll be wanting to do something like:

mxnet::Operator("linalg_batch_gemm").SetInput(...).CreateSymbol()

I'm just hoping to get some help on the specifics of what to put in SetInput, and if there's any other quirks or "gotchas" I should be careful of.

Any help most appreciated, thanks.

[mureva]

I shan't call this an answer until I know I can do batches, but this does at least work for the simple case without batches:

auto Y = mxnet::Operator("linalg_gemm").SetInput("A", transformationMat).SetInput("B",points).SetInput("C", zeroMat).CreateSymbol()