boennecd / Rtorchcpp

The main objective of this package is to provide a template to

• use PyTorch C++ API from an R package
• with Rcpp
• with test in both R and C++ using testthat and the wrapper in testthat of the C++ Catch library
• and which is easy to use (e.g. can use R CMD INSTALL, R CMD build, and devtools::test()).

Installation

This is instructions for Linux. Download and unzip LibTorch (https://pytorch.org/)

https://download.pytorch.org/libtorch/cu101/libtorch-cxx11-abi-shared-with-deps-1.4.0.zip

Set the following enviroment variable

export TORCH_INSTALL_PREFIX=/your/path/to/libtorch

Install the package

git clone https://github.com/boennecd/Rtorchcpp
R CMD build Rtorchcpp  && R CMD INSTALL Rtorchcpp_0.1.0.tar.gz
# or
R CMD INSTALL Rtorchcpp

The first build may fail but gives instruction on what to do.

Testing

R CMD build Rtorchcpp && R CMD check --as-cran Rtorchcpp_0.1.0.tar.gz

Or

# assuming that you are in the package directory
devtools::test()

TODOs

• What about the GPU version?
• Ask the user to create a symlink to libtorch.so instead. Otherwise, consider some other alternative (e.g. what is done in rJava package).
• Support more platforms.