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