NNPACK (https://github.com/Maratyszcza/NNPACK) "is an acceleration package for neural network computation". It would be interesting to benchmark the NNPACK convolution vs the Eigen TensorConvolution (https://eigen.tuxfamily.org/dox-devel/unsupported/TensorConvolution_8h_source.html). There is interest from that community in such benchmarks as well: https://github.com/Maratyszcza/NNPACK/issues/30.
Right now caffe2 (https://github.com/caffe2/caffe2) is using NNPACK in place of where Tensorflow uses Eigen.
Depending on the results of the benchmark, it would be good to apply what can be learned to improve the performance of Eigen.
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