CudaGridMap.h
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上传日期:2022-04-05
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- /*
- FastGrid (formerly AutoGrid)
- Copyright (C) 2009 The Scripps Research Institute. All rights reserved.
- Copyright (C) 2009 Masaryk University. All rights reserved.
- AutoGrid is a Trade Mark of The Scripps Research Institute.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #pragma once
- #include "cuda_internal/Interface.h"
- #include "../autogrid.h"
- // This class implements a gridmap representation on the GPU and takes care of padding.
- class CudaGridMap
- {
- public:
- // The constructor creates the gridmap, and copies it to the GPU (asynchronous)
- CudaGridMap(const Vec3i &numGridPoints, const Vec3i &numGridPointsPadded, const double *inputEnergies, cudaStream_t stream);
- ~CudaGridMap();
- void copyFromDeviceToHost(); // Copies the gridmap from the GPU to page-locked system memory (asynchronous)
- void readFromHost(double *outputEnergies); // Saves the gridmap into outputEnergies
- float *getEnergiesDevicePtr() { return energiesDevice; }
- private:
- cudaStream_t stream;
- Vec3i numGridPoints, numGridPointsPadded;
- float *energiesDevice, *energiesHost;
- void copyGridMapPadded(float *dst, const Vec3i &numGridPointsDst,
- const float *src, const Vec3i &numGridPointsSrc,
- cudaMemcpyKind kind);
- };