pmalloc.cpp File Reference

#include "gmxpre.h"
#include "pmalloc.h"
#include "gromacs/utility/smalloc.h"

Include dependency graph for pmalloc.cpp:

Description

Define functions for host-side memory handling when using OpenCL devices or no GPU device.

Author

Anca Hamuraru anca@.nosp@m.stre.nosp@m.amcom.nosp@m.puti.nosp@m.ng.eu

Functions
void	pmalloc (void **h_ptr, size_t nbytes, const DeviceContext *)
	Allocates nbytes of host memory. Use pfree to free memory allocated with this function. More...
void	pfree (void *h_ptr, const DeviceContext *)
	Frees memory allocated with pmalloc. More...
void	pmallocSetDefaultDeviceContext (const DeviceContext *)
void	pmallocClearDefaultDeviceContext ()

Function Documentation

void pfree	(	void *	h_ptr,
		const DeviceContext *
	)

Frees memory allocated with pmalloc.

Parameters

[in]

h_ptr

Buffer allocated with pmalloc that needs to be freed.

void pmalloc	(	void **	h_ptr,
		size_t	nbytes,
		const DeviceContext *
	)

Allocates nbytes of host memory. Use pfree to free memory allocated with this function.

Todo:

This function should allocate page-locked memory to help reduce D2H and H2D transfer times, similar with pmalloc from pmalloc.cu.

Parameters

[in,out]	h_ptr	Pointer where to store the address of the newly allocated buffer.
[in]	nbytes	Size in bytes of the buffer to be allocated.