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nixpkgs/pkgs/development/python-modules/pytorch/default.nix
2020-04-10 17:54:53 +01:00

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{ stdenv, fetchurl, fetchgit, buildPythonPackage, python, pythonOlder,
cudaSupport ? false, cudatoolkit ? null, cudnn ? null, nccl ? null, magma ? null,
mklSupport ? false, mkl ? null,
openMPISupport ? false, openmpi ? null,
buildNamedTensor ? false,
buildBinaries ? false,
cudaArchList ? null,
fetchFromGitHub, lib, numpy, pyyaml, cffi, click, typing, cmake, hypothesis, numactl,
linkFarm, symlinkJoin,
# ninja (https://ninja-build.org) must be available to run C++ extensions tests,
ninja,
# dependencies for torch.utils.tensorboard
tensorboardSupport ? true, pillow, six, future, tensorflow-tensorboard,
utillinux, which, isPy3k }:
assert !openMPISupport || openmpi != null;
assert !tensorboardSupport || tensorflow-tensorboard != null;
# assert that everything needed for cuda is present and that the correct cuda versions are used
assert !cudaSupport || cudatoolkit != null;
assert cudnn == null || cudatoolkit != null;
assert !cudaSupport || (let majorIs = lib.versions.major cudatoolkit.version;
in majorIs == "9" || majorIs == "10");
let
hasDependency = dep: pkg: lib.lists.any (inp: inp == dep) pkg.buildInputs;
matchesCudatoolkit = hasDependency cudatoolkit;
matchesMkl = hasDependency mkl;
in
# confirm that cudatoolkits are sync'd across dependencies
assert !(openMPISupport && cudaSupport) || matchesCudatoolkit openmpi;
assert !cudaSupport || matchesCudatoolkit magma;
# confirm that mkl is sync'd across dependencies
assert !mklSupport || mkl != null;
assert !(mklSupport && cudaSupport) || matchesMkl magma;
assert !mklSupport || (numpy.blasImplementation == "mkl" && numpy.blas == mkl);
let
cudatoolkit_joined = symlinkJoin {
name = "${cudatoolkit.name}-unsplit";
# nccl is here purely for semantic grouping it could be moved to nativeBuildInputs
paths = [ cudatoolkit.out cudatoolkit.lib nccl.dev nccl.out ];
};
# Give an explicit list of supported architectures for the build, See:
# - pytorch bug report: https://github.com/pytorch/pytorch/issues/23573
# - pytorch-1.2.0 build on nixpks: https://github.com/NixOS/nixpkgs/pull/65041
#
# This list was selected by omitting the TORCH_CUDA_ARCH_LIST parameter,
# observing the fallback option (which selected all architectures known
# from cudatoolkit_10_0, pytorch-1.2, and python-3.6), and doing a binary
# searching to find offending architectures.
#
# NOTE: Because of sandboxing, this derivation can't auto-detect the hardware's
# cuda architecture, so there is also now a problem around new architectures
# not being supported until explicitly added to this derivation.
#
# FIXME: CMake is throwing the following warning on python-1.2:
#
# ```
# CMake Warning at cmake/public/utils.cmake:172 (message):
# In the future we will require one to explicitly pass TORCH_CUDA_ARCH_LIST
# to cmake instead of implicitly setting it as an env variable. This will
# become a FATAL_ERROR in future version of pytorch.
# ```
# If this is causing problems for your build, this derivation may have to strip
# away the standard `buildPythonPackage` and use the
# [*Adjust Build Options*](https://github.com/pytorch/pytorch/tree/v1.2.0#adjust-build-options-optional)
# instructions. This will also add more flexibility around configurations
# (allowing FBGEMM to be built in pytorch-1.1), and may future proof this
# derivation.
brokenArchs = [ "3.0" ]; # this variable is only used as documentation.
cuda9ArchList = [
"3.5"
"5.0"
"5.2"
"6.0"
"6.1"
"7.0"
"7.0+PTX" # I am getting a "undefined architecture compute_75" on cuda 9
# which leads me to believe this is the final cuda-9-compatible architecture.
];
cuda10ArchList = cuda9ArchList ++ [
"7.5"
"7.5+PTX" # < most recent architecture as of cudatoolkit_10_0 and pytorch-1.2.0
];
final_cudaArchList =
if !cudaSupport || cudaArchList != null
then cudaArchList
else
if lib.versions.major cudatoolkit.version == "9"
then cuda9ArchList
else cuda10ArchList; # the assert above removes any ambiguity here.
# Normally libcuda.so.1 is provided at runtime by nvidia-x11 via
# LD_LIBRARY_PATH=/run/opengl-driver/lib. We only use the stub
# libcuda.so from cudatoolkit for running tests, so that we dont have
# to recompile pytorch on every update to nvidia-x11 or the kernel.
cudaStub = linkFarm "cuda-stub" [{
name = "libcuda.so.1";
path = "${cudatoolkit}/lib/stubs/libcuda.so";
}];
cudaStubEnv = lib.optionalString cudaSupport
"LD_LIBRARY_PATH=${cudaStub}\${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH ";
in buildPythonPackage rec {
version = "1.2.0";
pname = "pytorch";
disabled = !isPy3k;
outputs = [
"out" # output standard python package
"dev" # output libtorch only
];
src = fetchFromGitHub {
owner = "pytorch";
repo = "pytorch";
rev = "v${version}";
fetchSubmodules = true;
sha256 = "1biyq2p48chakf2xw7hazzqmr5ps1nx475ql8vkmxjg5zaa071cz";
};
dontUseCmakeConfigure = true;
preConfigure = lib.optionalString cudaSupport ''
export TORCH_CUDA_ARCH_LIST="${lib.strings.concatStringsSep ";" final_cudaArchList}"
export CC=${cudatoolkit.cc}/bin/gcc CXX=${cudatoolkit.cc}/bin/g++
'' + lib.optionalString (cudaSupport && cudnn != null) ''
export CUDNN_INCLUDE_DIR=${cudnn}/include
'';
preFixup = ''
function join_by { local IFS="$1"; shift; echo "$*"; }
function strip2 {
IFS=':'
read -ra RP <<< $(patchelf --print-rpath $1)
IFS=' '
RP_NEW=$(join_by : ''${RP[@]:2})
patchelf --set-rpath \$ORIGIN:''${RP_NEW} "$1"
}
for f in $(find ''${out} -name 'libcaffe2*.so')
do
strip2 $f
done
'';
# Override the (weirdly) wrong version set by default. See
# https://github.com/NixOS/nixpkgs/pull/52437#issuecomment-449718038
# https://github.com/pytorch/pytorch/blob/v1.0.0/setup.py#L267
PYTORCH_BUILD_VERSION = version;
PYTORCH_BUILD_NUMBER = 0;
BUILD_NAMEDTENSOR = buildNamedTensor; # experimental feature
USE_SYSTEM_NCCL=true; # don't build pytorch's third_party NCCL
# Suppress a weird warning in mkl-dnn, part of ideep in pytorch
# (upstream seems to have fixed this in the wrong place?)
# https://github.com/intel/mkl-dnn/commit/8134d346cdb7fe1695a2aa55771071d455fae0bc
# https://github.com/pytorch/pytorch/issues/22346
#
# Also of interest: pytorch ignores CXXFLAGS uses CFLAGS for both C and C++:
# https://github.com/pytorch/pytorch/blob/v1.2.0/setup.py#L17
NIX_CFLAGS_COMPILE = lib.optionals (numpy.blas == mkl) [ "-Wno-error=array-bounds" ];
nativeBuildInputs = [
cmake
utillinux
which
ninja
] ++ lib.optionals cudaSupport [ cudatoolkit_joined ];
buildInputs = [
numpy.blas
] ++ lib.optionals cudaSupport [ cudnn magma nccl ]
++ lib.optionals stdenv.isLinux [ numactl ];
propagatedBuildInputs = [
cffi
click
numpy
pyyaml
] ++ lib.optionals openMPISupport [ openmpi ]
++ lib.optional (pythonOlder "3.5") typing
++ lib.optionals tensorboardSupport [pillow six future tensorflow-tensorboard];
checkInputs = [ hypothesis ninja ];
doCheck = false; # tests take a long time for channel release, so doCheck should be overridden only when developing
checkPhase = "${cudaStubEnv}python test/run_test.py"
+ " --exclude utils" # utils requires git, which is not allowed in the check phase
# Other tests which have been disabled in previous nix derivations of pytorch.
# --exclude dataloader sparse torch utils thd_distributed distributed cpp_extensions
;
postInstall = ''
mkdir $dev
cp -r $out/${python.sitePackages}/torch/lib $dev/lib
cp -r $out/${python.sitePackages}/torch/include $dev/include
'';
postFixup = stdenv.lib.optionalString stdenv.isDarwin ''
for f in $(ls $dev/lib/*.dylib); do
install_name_tool -id $dev/lib/$(basename $f) $f || true
done
install_name_tool -change @rpath/libshm.dylib $dev/lib/libshm.dylib $dev/lib/libtorch_python.dylib
install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libtorch_python.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libtorch_python.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libtorch.dylib
install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_observers.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_observers.dylib
install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_module_test_dynamic.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_module_test_dynamic.dylib
install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_detectron_ops.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_detectron_ops.dylib
install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libshm.dylib
install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libshm.dylib
'';
meta = {
description = "Open source, prototype-to-production deep learning platform";
homepage = "https://pytorch.org/";
license = lib.licenses.bsd3;
platforms = with lib.platforms; linux ++ lib.optionals (!cudaSupport) darwin;
maintainers = with lib.maintainers; [ teh thoughtpolice stites tscholak ]; # tscholak esp. for darwin-related builds
};
}