vud_mem.h File Reference

#include "vud.h"
#include <stdint.h>

Go to the source code of this file.

Typedefs
typedef uint32_t	vud_mram_addr
typedef uint32_t	vud_mram_size

Functions
void	vud_broadcast_transfer (vud_rank *r, vud_mram_size sz, const uint64_t(*src)[sz], vud_mram_addr tgt)
	transfer the same buffer to all DPUs of one rank
void	vud_simple_transfer (vud_rank *r, vud_mram_size sz, const uint64_t *(*src)[64], vud_mram_addr tgt)
	transfer 64 possibly different buffers to the DPUs of one rank
void	vud_simple_gather (vud_rank *r, vud_mram_size sz, vud_mram_addr src, uint64_t *(*tgt)[64])
	transfer words from all DPUs to the host
void	vud_broadcast_to (vud_rank *r, vud_mram_size sz, const uint64_t(*src)[sz], const char *symbol)
	broadcast data to some variable in MRAM
void	vud_transfer_to (vud_rank *r, vud_mram_size sz, const uint64_t *(*src)[64], const char *symbol)
	transfer per-DPU data to some variable in MRAM
void	vud_gather_from (vud_rank *r, vud_mram_size sz, const char *symbol, uint64_t *(*tgt)[64])
	gather data per-DPU from some variable in MRAM

Typedef Documentation

vud_mram_addr

typedef uint32_t vud_mram_addr

vud_mram_size

typedef uint32_t vud_mram_size

Function Documentation

vud_broadcast_to()

void vud_broadcast_to	(	vud_rank *	r,
		vud_mram_size	sz,
		const uint64_t(*)	src[sz],
		const char *	symbol
	)

broadcast data to some variable in MRAM

NOTE: In hotloops, it may be desirable to call vud_get_symbol directly and cache the result, as these functions call readelf at each invocation.

Parameters

r	rank to broadcast data to
sz	amount of words (8-bytes each) to transfer
src	buffer holding data to transfer
symbol	name of the variable to transfer to - call vud_ime_load before

vud_broadcast_transfer()

void vud_broadcast_transfer	(	vud_rank *	r,
		vud_mram_size	sz,
		const uint64_t(*)	src[sz],
		vud_mram_addr	tgt
	)

transfer the same buffer to all DPUs of one rank

Parameters

r	rank to transfer buffer to
sz	amount of words (8-bytes each) to transfer
src	buffer holding data to transfer
tgt	mram address to copy buffer to

vud_gather_from()

void vud_gather_from	(	vud_rank *	r,
		vud_mram_size	sz,
		const char *	symbol,
		uint64_t *(*)	tgt[64]
	)

gather data per-DPU from some variable in MRAM

Parameters

r	rank to gather data from
sz	amount of words (8-bytes each) to gather
symbol	variable in MRAM to gather data from
tgt	Buffer to write words to.

vud_simple_gather()

void vud_simple_gather	(	vud_rank *	r,
		vud_mram_size	sz,
		vud_mram_addr	src,
		uint64_t *(*)	tgt[64]
	)

transfer words from all DPUs to the host

Parameters

r	rank to transfer bytes from
sz	amount of words (8-bytes each) to transfer
src	Address to read from, the same for all DPUs.
tgt	Buffer to write words to.

vud_simple_transfer()

void vud_simple_transfer	(	vud_rank *	r,
		vud_mram_size	sz,
		const uint64_t *(*)	src[64],
		vud_mram_addr	tgt
	)

transfer 64 possibly different buffers to the DPUs of one rank

Parameters

r	rank to transfer to
sz	amount of words (8-bytes each) to transfer
src	array of pointers to the 64 buffers
tgt	mram address to copy buffers to (same for all DPUs)

vud_transfer_to()

void vud_transfer_to	(	vud_rank *	r,
		vud_mram_size	sz,
		const uint64_t *(*)	src[64],
		const char *	symbol
	)

transfer per-DPU data to some variable in MRAM

Parameters

r	rank to transfer data to
sz	amount of words (8-bytes each) to transfer
src	array of pointers to the 64 buffers
symbol	name of the variable to transfer to - call vud_ime_load before