c29523665e
SimplePoolManager doesn't allow mapping of two WGs simultaneously on the same Compute Unit (provided the previous WG has been mapped to all the SIMDs) even if there is sufficient VRF and SRF space available. DynPoolManager takes care of that by dynamically allocating and deallocating register file space to wavefronts Change-Id: I2255c68d4b421615d7b231edc05d3ebb27cbd66c Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32034 Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Reviewed-by: Alexandru Duțu <alexandru.dutu@amd.com>
77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
/*
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* Copyright (c) 2015-2017 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
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* contributors may be used to endorse or promote products derived from this
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* software 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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#ifndef __POOL_MANAGER_HH__
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#define __POOL_MANAGER_HH__
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#include <cassert>
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#include <cstdint>
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#include <string>
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#include "params/PoolManager.hh"
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#include "sim/sim_object.hh"
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// Pool Manager Logic
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class PoolManager : public SimObject
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{
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public:
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PoolManager(const PoolManagerParams &p);
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virtual ~PoolManager() { _poolSize = 0; }
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uint32_t minAllocation() { return _minAllocation; }
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virtual std::string printRegion() = 0;
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virtual uint32_t regionSize(std::pair<uint32_t,uint32_t> ®ion) = 0;
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virtual bool canAllocate(uint32_t numRegions, uint32_t size) = 0;
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virtual uint32_t allocateRegion(const uint32_t size,
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uint32_t *reserved) = 0;
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virtual void freeRegion(uint32_t firstIdx, uint32_t lastIdx) = 0;
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uint32_t poolSize() { return _poolSize; }
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// I don't think with the current API it is possible to do what
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// we intend to - reset the entire register pool.
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// Because we need to reset the register pool when all WGs on
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// the Compute Unit are finished - before launching WGs from
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// another kernel.
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// TsungTai Yeh added a virtual method do the very same - at a diff
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// place though.
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virtual void resetRegion(const int & regsPerSimd) {}; // do nothing
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private:
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// minimum size that can be reserved per allocation
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uint32_t _minAllocation;
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// pool size in number of elements
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uint32_t _poolSize;
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};
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#endif // __POOL_MANAGER_HH__
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