merrymercy commented on a change in pull request #6190: URL: https://github.com/apache/incubator-tvm/pull/6190#discussion_r464971878
########## File path: include/tvm/auto_scheduler/feature.h ########## @@ -0,0 +1,122 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +/*! + * \file auto_scheduler/feature.h + * \brief Feature extraction for the cost model. + * We extract one feature vector per BufferStoreNode statement in a TIR Stmt, + * so we call this feature as "Per Store" feature. + * The cost model also does prediction for each BufferStoreNode statement and aggregates + * the predictions as the whole score for a TVM IR (Stmt). + * + * The feature specification is defined by `src/auto_scheduler/feature.cc:: FeatureSet` + */ + +#ifndef TVM_AUTO_SCHEDULER_FEATURE_H_ +#define TVM_AUTO_SCHEDULER_FEATURE_H_ + +#include <tvm/auto_scheduler/compute_dag.h> +#include <tvm/auto_scheduler/measure.h> + +#include <string> +#include <vector> + +namespace tvm { +namespace auto_scheduler { + +/*! + * \brief Get PerStore feature from a TIR Stmt + * \param stmt The input lowered TIR statement + * \param cache_line_size The size of cache line in bytes + * \param max_n_bufs The maximum number of extracted buffers for one statement + * \param ret The returned feature vector + */ +void GetPerStoreFeature(const Stmt& stmt, int cache_line_size, int max_n_bufs, Review comment: They write to a pre-allocated buffer in parallel. I think this method introduces less trouble. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
