devicebuffer.h File Reference

#include "config.h"
#include "gromacs/gpu_utils/devicebuffer_datatype.h"
#include "gromacs/utility/gmxassert.h"
#include "gromacs/utility/smalloc.h"
#include "gromacs/gpu_utils/devicebuffer.cuh"

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Description

Implements the logic for handling of DeviceBuffer types in OpenCL/CUDA. Can only be included on GPU build paths.

Author

Aleksei Iupinov a.yup.nosp@m.inov.nosp@m.@gmai.nosp@m.l.co.nosp@m.m

Functions
template<typename ValueType >
void	reallocateDeviceBuffer (DeviceBuffer< ValueType > *buffer, size_t numValues, int *currentNumValues, int *currentMaxNumValues, DeviceContext deviceContext)
	Reallocates the device-side buffer. More...

Function Documentation

template<typename ValueType >

void reallocateDeviceBuffer	(	DeviceBuffer< ValueType > *	buffer,
		size_t	numValues,
		int *	currentNumValues,
		int *	currentMaxNumValues,
		DeviceContext	deviceContext
	)

Reallocates the device-side buffer.

Reallocates the device-side memory pointed by buffer. Allocation is buffered and therefore freeing is only needed if the previously allocated space is not enough. currentNumValues and currentMaxNumValues are updated. TODO: currentNumValues, currentMaxNumValues, deviceContext should all be encapsulated in a host-side class together with the buffer.

Template Parameters

ValueType

Raw value type of the buffer.

Parameters

[in,out]	buffer	Pointer to the device-side buffer
[in]	numValues	Number of values to accommodate.
[in,out]	currentNumValues	The pointer to the buffer's number of values.
[in,out]	currentMaxNumValues	The pointer to the buffer's capacity.
[in]	deviceContext	The buffer's device context.