tqchen commented on code in PR #16254: URL: https://github.com/apache/tvm/pull/16254#discussion_r1434232120
########## python/tvm/relax/backend/dispatch_sort_scan.py: ########## @@ -0,0 +1,102 @@ +# 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. +# pylint: disable=invalid-name, unused-argument, redefined-argument-from-local +"""Dispatch sort and scan operators to platform dependent implementation.""" + +from tvm import topi +from tvm.ir import Op +from tvm.ir.module import IRModule +from tvm.ir.transform import PassContext, module_pass +from tvm.target import Target +from tvm.contrib.thrust import can_use_thrust +from tvm.relax import Expr, Function, Call, PyExprMutator, expr_functor, TensorStructInfo + + +@expr_functor.mutator +class SortScanDispatcher(PyExprMutator): + """ + Dispatcher to dispatch sort and scan. + + """ + + def __init__(self, mod): + super().__init__(mod) + + def _get_target(self, expr: Expr) -> Target: + sinfo = expr.struct_info + # Get target information from TensorStructInfo + if isinstance(sinfo, TensorStructInfo): + vdevice = sinfo.vdevice + if vdevice is not None: + return vdevice.target + # Return the target in current context + target = Target.current() + if target is None: + raise ValueError( + "Target not found. Please ensure that the target is annotated within the module, \ + or alternatively, execute this within a specified target context." + ) + return target + + def visit_call_(self, call: Call) -> Expr: + if not isinstance(call.op, Op): + return super().visit_call_(call) + + if call.op.name == "relax.sort": + tgt = self._get_target(call) + with tgt: + if can_use_thrust(tgt, "tvm.contrib.thrust.sort"): + return self.builder_.call_te( + topi.cuda.sort_thrust, + call.args[0], + call.attrs.axis, + not call.attrs.descending, + ) + return self.builder_.call_te( Review Comment: @jinhongyii do we also need to apply the default schedule in some way? i know certain function have pre-post tir blocks -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
