77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
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* Copyright (c) 2014-2015 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Sooraj Puthoor
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*/
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#include "gpu-compute/of_scheduling_policy.hh"
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#include "gpu-compute/wavefront.hh"
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Wavefront*
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OFSchedulingPolicy::chooseWave()
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{
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// Set when policy choose a wave to schedule
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bool waveChosen = false;
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Wavefront *selectedWave = nullptr;
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int selectedWaveID = -1;
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uint32_t selectedPosition = 0;
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for (int position = 0; position < scheduleList->size(); ++position) {
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Wavefront *curWave = scheduleList->at(position);
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uint32_t curWaveID = curWave->wfDynId;
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// Choosed wave with the lowest wave ID
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if (selectedWaveID == -1 || curWaveID < selectedWaveID) {
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waveChosen = true;
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selectedWaveID = curWaveID;
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selectedWave = curWave;
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selectedPosition = position;
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}
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}
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// Check to make sure ready list had atleast one schedulable wave
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if (waveChosen) {
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scheduleList->erase(scheduleList->begin() + selectedPosition);
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} else {
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panic("Empty ready list");
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}
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return selectedWave;
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}
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void
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OFSchedulingPolicy::bindList(std::vector<Wavefront*> *list)
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{
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scheduleList = list;
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}
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