Dependencies to external repositories go in this directory.
Currently our fork of ATen is included as a submodule tied to the latest commit
which includes the expand* broadcasting functions. ATen is a mirror of the
aten folder in pytorch and is maintained by the pytorch community.
build-aten.sh is a script that builds the aten library within the pytorch
repo, including the shared TH library functions.
The shared library that is generated (libATen.dylib on OSX and libATen.so/.a on linux) is loaded and required at runtime by the hasktorch library.
build-aten-spec.sh.bk is a backup script which preprocesses PyTorch's *.cwrap
files to be yaml-compliant formats to be use by ProcessSpec.hs in codegen. Use of
cwrap files for code generation was experimental and is not in active development.
Currently, all of this code is broken and it looks like a dead end, but aten support
may be rekindled if they expose a C-API.
Default clang versions on OSX are older and do not support modern C++
(C++11/14/17) language extensions, leading to compilation failures. This is why
the build-aten.sh script asks for gcc7 to be installed with homebrew.