From 87a08563841715806972398dfeb7770d2b69d30b Mon Sep 17 00:00:00 2001 From: tangwei12 Date: Fri, 11 May 2018 16:24:08 +0800 Subject: [PATCH] add checkpoint save op --- paddle/fluid/operators/cpkt_save_op.cc | 158 +++++++++++++++++++++++++ 1 file changed, 158 insertions(+) create mode 100644 paddle/fluid/operators/cpkt_save_op.cc diff --git a/paddle/fluid/operators/cpkt_save_op.cc b/paddle/fluid/operators/cpkt_save_op.cc new file mode 100644 index 000000000..352bd3350 --- /dev/null +++ b/paddle/fluid/operators/cpkt_save_op.cc @@ -0,0 +1,158 @@ +/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. */ + +#include +#include +#include +#include +#include +#include "paddle/fluid/framework/data_type.h" +#include "paddle/fluid/framework/data_type_transform.h" +#include "paddle/fluid/framework/framework.pb.h" +#include "paddle/fluid/framework/lod_tensor.h" +#include "paddle/fluid/framework/op_registry.h" +#include "paddle/fluid/platform/device_context.h" + +namespace paddle { +namespace operators { + +// TODO(sidgoyal78): These function are needed by other files (save_op), move +// them to paddle::filesystem namespace. (as noted by yuyang18 in save_op). +constexpr char kSEP = '/'; +static bool FileExists(const std::string &filepath) { + struct stat buffer; + return (stat(filepath.c_str(), &buffer) == 0); +} + +static std::string DirName(const std::string &filepath) { + auto pos = filepath.rfind(kSEP); + if (pos == std::string::npos) { + return ""; + } + return filepath.substr(0, pos); +} + +static void MkDir(const char *path) { + if (mkdir(path, 0755)) { + PADDLE_ENFORCE_EQ(errno, EEXIST, "%s mkdir failed!", path); + } +} + +static void MkDirRecursively(const char *fullpath) { + if (*fullpath == '\0') return; // empty string + if (FileExists(fullpath)) return; + + MkDirRecursively(DirName(fullpath).c_str()); + MkDir(fullpath); +} + +class CkptSaveOp : public framework::OperatorBase { + public: + CkptSaveOp(const std::string &type, const framework::VariableNameMap &inputs, + const framework::VariableNameMap &outputs, + const framework::AttributeMap &attrs) + : OperatorBase(type, inputs, outputs, attrs) {} + + private: + void RunImpl(const framework::Scope &scope, + const platform::Place &place) const override { + auto filename = Attr("file_path"); + auto overwrite = Attr("overwrite"); + + bool is_present = FileExists(filename); + if (is_present && !overwrite) { + PADDLE_THROW("%s exists!, cannot save_combine to it when overwrite=false", + filename, overwrite); + } + + MkDirRecursively(DirName(filename).c_str()); + std::ofstream fout(filename); + PADDLE_ENFORCE(static_cast(fout), "Cannot open %s to write", + filename); + + auto inp_var_names = Inputs("X"); + PADDLE_ENFORCE_GT(static_cast(inp_var_names.size()), 0, + "The number of input variables should be greater than 0"); + + // get device context from pool + platform::DeviceContextPool &pool = platform::DeviceContextPool::Instance(); + auto &dev_ctx = *pool.Get(place); + + for (size_t i = 0; i < inp_var_names.size(); i++) { + auto *var = scope.FindVar(inp_var_names[i]); + + PADDLE_ENFORCE(var != nullptr, + "Cannot find variable %s for save_combine_op", + inp_var_names[i]); + PADDLE_ENFORCE(var->IsType(), + "SaveCombineOp only supports LoDTensor, %s has wrong type", + inp_var_names[i]); + + auto &tensor = var->Get(); + // Serialize tensors one by one + + // Check types to see if a fp16 transformation is required + auto in_dtype = framework::ToDataType(tensor.type()); + auto out_dtype = in_dtype; + + if (in_dtype != out_dtype) { + auto in_kernel_type = framework::OpKernelType(in_dtype, place); + auto out_kernel_type = framework::OpKernelType(out_dtype, place); + framework::LoDTensor out; + // copy LoD info to the new tensor + out.set_lod(tensor.lod()); + framework::TransDataType(in_kernel_type, out_kernel_type, tensor, &out); + framework::SerializeToStream(fout, out, dev_ctx); + } else { + framework::SerializeToStream(fout, tensor, dev_ctx); + } + } + fout.close(); + } +}; + +class CkptSaveOpProtoMaker : public framework::OpProtoAndCheckerMaker { + public: + CkptSaveOpProtoMaker(OpProto *proto, OpAttrChecker *op_checker) + : OpProtoAndCheckerMaker(proto, op_checker) { + AddInput( + "X", + "(vector) Input LoDTensors that need to be saved together in a file.") + .AsDuplicable(); + AddComment(R"DOC( +SaveCombine operator + +This operator will serialize and write a list of input LoDTensor variables +to a file on disk. +)DOC"); + AddAttr("overwrite", + "(boolean, default true)" + "Overwrite the output file if it exists.") + .SetDefault(true); + + AddAttr( + "file_path", + "(string)" + "The \"file_path\" where the LoDTensor variables will be saved.") + .AddCustomChecker( + [](const std::string &path) { return !path.empty(); }); + } +}; + +} // namespace operators +} // namespace paddle + +namespace ops = paddle::operators; + +REGISTER_OPERATOR(ckpt_save, ops::CkptSaveOp, ops::CkptSaveOpProtoMaker); -- GitLab