merrymercy commented on a change in pull request #5962: URL: https://github.com/apache/incubator-tvm/pull/5962#discussion_r449999028
########## File path: python/tvm/ansor/utils.py ########## @@ -0,0 +1,195 @@ +# 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. + +"""Common utilities for ansor""" + +from typing import Hashable +import multiprocessing +import multiprocessing.pool +import queue +import signal + +try: + import psutil +except ImportError: + raise ImportError("psutil not found, try `pip install psutil` to fix this") + +from tvm.tir import expr +from tvm.tir.transform import Simplify +from tvm.ir.transform import Sequential +from ..te import Tensor, placeholder + + +def get_func_name(func): + """Get name of a function. + + Parameters + ---------- + func: Function + The target function. + + Returns + ------- + name: str + The function name. + """ + return func.func_name if hasattr(func, 'func_name') else func.__name__ + + +def get_const_int(exp): + """Verifies expr is integer and get the constant value. + + Parameters + ---------- + exp : tvm.Expr or int + The input expression. + + Returns + ------- + out_value : int + The output. + """ + if isinstance(exp, int): + return exp + if not isinstance(exp, (expr.IntImm)): + opt = Sequential([Simplify()]) + exp = opt(exp) + if not isinstance(exp, (expr.IntImm)): + raise ValueError("Expect value to be constant int") + return exp.value + + +def get_const_tuple(in_tuple): + """Verifies input tuple is IntImm, returns tuple of int. + + Parameters + ---------- + in_tuple : tuple of Expr + The input. + + Returns + ------- + out_tuple : tuple of int + The output. + """ + return tuple(get_const_int(x) for x in in_tuple) + + + +def list_to_tuple(x): + """ Convert a list to a tuple recursively. """ + assert isinstance(x, list) + return tuple(list_to_tuple(y) if isinstance(y, list) else y for y in x) + + +def serialize_args(args): + """ + Serialize arguments of a function to a hashable and jsonable tuple. + Currently this is mainly used for tvm.tensor.Tensor + """ + ret = [] + for t in args: + if isinstance(t, Tensor): + t = ('TENSOR', get_const_tuple(t.shape), t.dtype) + elif isinstance(t, list): + t = list_to_tuple(t) + + assert isinstance(t, Hashable), str(t) + " is not hashable" + ret.append(t) + + return tuple(ret) + + +def deserialize_args(args): + """The inverse function of :code:`serialize_args`""" + ret = [] + for t in args: + if isinstance(t, (tuple, list)) and t[0] == 'TENSOR': + ret.append(placeholder(shape=t[1], dtype=t[2])) + else: + ret.append(t) + return ret + + +class NoDaemonProcess(multiprocessing.Process): + @property + def daemon(self): + return False + + @daemon.setter + def daemon(self, value): + pass + + +class NoDaemonContext(type(multiprocessing.get_context())): + Process = NoDaemonProcess + + +class NoDaemonPool(multiprocessing.pool.Pool): + """A no daemon pool version of multiprocessing.Pool. Review comment: @MarisaKirisame This class inherits the builtin class in python and only sets the `daemon` property to false. Do you have a better name? @yangjunpro This is not related to synchronous or asynchronous pool ---------------------------------------------------------------- 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: us...@infra.apache.org
