#include <gauge_field.h>

Inheritance diagram for quda::cudaGaugeField:

Collaboration diagram for quda::cudaGaugeField:

[legend]

Public Member Functions
	cudaGaugeField (const GaugeFieldParam &)

virtual	~cudaGaugeField ()

void	exchangeGhost (QudaLinkDirection link_direction=QUDA_LINK_BACKWARDS)
	Exchange the ghost and store store in the padded region. More...

void	injectGhost (QudaLinkDirection link_direction=QUDA_LINK_BACKWARDS)
	The opposite of exchangeGhost: take the ghost zone on x, send to node x-1, and inject back into the field. More...

void	createComms (const int *R, bool no_comms_fill)
	Create the communication handlers and buffers. More...

void	allocateGhostBuffer (const int *R, bool no_comms_fill) const
	Allocate the ghost buffers. More...

void	recvStart (int dim, int dir)
	Start the receive communicators. More...

void	sendStart (int dim, int dir, cudaStream_t *stream_p=nullptr)
	Start the sending communicators. More...

void	commsComplete (int dim, int dir)
	Wait for communication to complete. More...

void	exchangeExtendedGhost (const int *R, bool no_comms_fill=false)
	This does routine will populate the border / halo region of a gauge field that has been created using copyExtendedGauge. More...

void	exchangeExtendedGhost (const int *R, TimeProfile &profile, bool no_comms_fill=false)
	This does routine will populate the border / halo region of a gauge field that has been created using copyExtendedGauge. Overloaded variant that will start and stop a comms profile. More...

void	copy (const GaugeField &src)

void	loadCPUField (const cpuGaugeField &cpu)
	Download into this field from a CPU field. More...

void	loadCPUField (const cpuGaugeField &cpu, TimeProfile &profile)
	Download into this field from a CPU field. Overloaded variant that includes profiling. More...

void	saveCPUField (cpuGaugeField &cpu) const
	Upload from this field into a CPU field. More...

void	saveCPUField (cpuGaugeField &cpu, TimeProfile &profile) const
	Upload from this field into a CPU field. Overloaded variant that includes profiling. More...

void *	Gauge_p ()

void *	Even_p ()

void *	Odd_p ()

const void *	Gauge_p () const

const void *	Even_p () const

const void *	Odd_p () const

void	setGauge (void *_gauge)

void	zero ()

void	backup () const
	Backs up the cudaGaugeField to CPU memory. More...

void	restore ()
	Restores the cudaGaugeField to CUDA memory. More...

Public Member Functions inherited from quda::GaugeField
	GaugeField (const GaugeFieldParam &param)

virtual	~GaugeField ()

int	Length () const

int	Ncolor () const

QudaReconstructType	Reconstruct () const

QudaGaugeFieldOrder	Order () const

double	Anisotropy () const

double	Tadpole () const

double	Scale () const

QudaTboundary	TBoundary () const

QudaLinkType	LinkType () const

QudaGaugeFixed	GaugeFixed () const

QudaGaugeFieldOrder	FieldOrder () const

QudaFieldGeometry	Geometry () const

QudaStaggeredPhase	StaggeredPhase () const

bool	StaggeredPhaseApplied () const

void	applyStaggeredPhase ()

void	removeStaggeredPhase ()

double	iMu () const

const double &	LinkMax () const

int	Nface () const

void	checkField (const LatticeField &) const

bool	isNative () const

size_t	Bytes () const

size_t	PhaseBytes () const

size_t	PhaseOffset () const

const void **	Ghost () const

void **	Ghost ()

size_t	SiteOffset () const

size_t	SiteSize () const

uint64_t	checksum (bool mini=false) const

Public Member Functions inherited from quda::LatticeField
	LatticeField (const LatticeFieldParam &param)

	LatticeField (const LatticeField &field)

virtual	~LatticeField ()

void	allocateGhostBuffer (size_t ghost_bytes) const
	Allocate the static ghost buffers. More...

void	createComms (bool no_comms_fill=false)

void	destroyComms ()

void	createIPCComms ()

bool	ipcCopyComplete (int dir, int dim)

bool	ipcRemoteCopyComplete (int dir, int dim)

const cudaEvent_t &	getIPCCopyEvent (int dir, int dim) const

const cudaEvent_t &	getIPCRemoteCopyEvent (int dir, int dim) const

int	Ndim () const

const int *	X () const

int	Volume () const

int	VolumeCB () const

const int *	SurfaceCB () const

int	SurfaceCB (const int i) const

int	Stride () const

int	Pad () const

const int *	R () const

QudaGhostExchange	GhostExchange () const

QudaPrecision	Precision () const

virtual QudaSiteSubset	SiteSubset () const

virtual QudaMemoryType	MemType () const

int	Nvec () const

QudaFieldLocation	Location () const

size_t	GBytes () const

void	checkField (const LatticeField &a) const

virtual void	read (char *filename)

virtual void	write (char *filename)

virtual void	gather (int nFace, int dagger, int dir, cudaStream_t *stream_p=NULL)

virtual void	commsStart (int nFace, int dir, int dagger=0, cudaStream_t *stream_p=NULL, bool gdr_send=false, bool gdr_recv=true)

virtual int	commsQuery (int nFace, int dir, int dagger=0, cudaStream_t *stream_p=NULL, bool gdr_send=false, bool gdr_recv=true)

virtual void	commsWait (int nFace, int dir, int dagger=0, cudaStream_t *stream_p=NULL, bool gdr_send=false, bool gdr_recv=true)

virtual void	scatter (int nFace, int dagger, int dir)

const char *	VolString () const

Public Member Functions inherited from quda::Object
	Object ()

virtual	~Object ()

Private Attributes
void *	gauge

void *	even

void *	odd

Additional Inherited Members
Static Public Member Functions inherited from quda::LatticeField
static void	freeGhostBuffer (void)
	Free statically allocated ghost buffers. More...

static void	destroyIPCComms ()

Static Public Member Functions inherited from quda::Object
static void *	operator new (std::size_t size)

static void	operator delete (void *p)

static void *	operator new[] (std::size_t size)

static void	operator delete[] (void *p)

Static Public Attributes inherited from quda::LatticeField
static int	bufferIndex = 0

static bool	ghost_field_reset = false

Protected Member Functions inherited from quda::GaugeField
void	exchange (void recv, void send, QudaDirection dir) const
	Exchange the buffers across all dimensions in a given direction. More...

void	createGhostZone (const int *R, bool no_comms_fill) const

Protected Member Functions inherited from quda::LatticeField
virtual void	setTuningString ()

Protected Attributes inherited from quda::GaugeField
size_t	bytes

int	phase_offset

int	phase_bytes

int	length

int	real_length

int	nColor

int	nFace

QudaFieldGeometry	geometry

QudaReconstructType	reconstruct

int	nInternal

QudaGaugeFieldOrder	order

QudaGaugeFixed	fixed

QudaLinkType	link_type

QudaTboundary	t_boundary

double	anisotropy

double	tadpole

double	fat_link_max

double	scale

QudaFieldCreate	create

void *	ghost [2 *QUDA_MAX_DIM]

int	ghostFace [QUDA_MAX_DIM]

QudaStaggeredPhase	staggeredPhaseType

bool	staggeredPhaseApplied

double	i_mu

size_t	site_offset

size_t	site_size

Protected Attributes inherited from quda::LatticeField
int	volume

int	volumeCB

int	stride

int	pad

size_t	total_bytes

int	nDim

int	x [QUDA_MAX_DIM]

int	surface [QUDA_MAX_DIM]

int	surfaceCB [QUDA_MAX_DIM]

int	r [QUDA_MAX_DIM]

QudaPrecision	precision

QudaSiteSubset	siteSubset

QudaGhostExchange	ghostExchange

int	nDimComms

size_t	ghost_bytes

size_t	ghost_face_bytes [QUDA_MAX_DIM]

int	ghostOffset [QUDA_MAX_DIM][2]

int	ghostNormOffset [QUDA_MAX_DIM][2]

void *	my_face_h [2]

void *	my_face_hd [2]

void *	my_face_dim_dir_h [2][QUDA_MAX_DIM][2]

void *	my_face_dim_dir_hd [2][QUDA_MAX_DIM][2]

void *	my_face_dim_dir_d [2][QUDA_MAX_DIM][2]

void *	from_face_h [2]

void *	from_face_hd [2]

void *	from_face_dim_dir_h [2][QUDA_MAX_DIM][2]

void *	from_face_dim_dir_hd [2][QUDA_MAX_DIM][2]

void *	from_face_dim_dir_d [2][QUDA_MAX_DIM][2]

MsgHandle *	mh_recv_fwd [2][QUDA_MAX_DIM]

MsgHandle *	mh_recv_back [2][QUDA_MAX_DIM]

MsgHandle *	mh_send_fwd [2][QUDA_MAX_DIM]

MsgHandle *	mh_send_back [2][QUDA_MAX_DIM]

MsgHandle *	mh_recv_rdma_fwd [2][QUDA_MAX_DIM]

MsgHandle *	mh_recv_rdma_back [2][QUDA_MAX_DIM]

MsgHandle *	mh_send_rdma_fwd [2][QUDA_MAX_DIM]

MsgHandle *	mh_send_rdma_back [2][QUDA_MAX_DIM]

bool	initComms

char	vol_string [TuneKey::volume_n]

QudaMemoryType	mem_type

char *	backup_h

char *	backup_norm_h

bool	backed_up

Static Protected Attributes inherited from quda::LatticeField
static void *	ghost_send_buffer_d [2] = {nullptr, nullptr}

static void *	ghost_recv_buffer_d [2] = {nullptr, nullptr}

static void *	ghost_pinned_buffer_h [2] = {nullptr, nullptr}

static void *	ghost_pinned_buffer_hd [2] = {nullptr, nullptr}

static void *	ghost_remote_send_buffer_d [2][QUDA_MAX_DIM][2]

static size_t	ghostFaceBytes = 0

static bool	initGhostFaceBuffer = false

static MsgHandle *	mh_send_p2p_fwd [2][QUDA_MAX_DIM] { }

static MsgHandle *	mh_send_p2p_back [2][QUDA_MAX_DIM] { }

static MsgHandle *	mh_recv_p2p_fwd [2][QUDA_MAX_DIM] { }

static MsgHandle *	mh_recv_p2p_back [2][QUDA_MAX_DIM] { }

static int	buffer_send_p2p_fwd [2][QUDA_MAX_DIM] { }

static int	buffer_recv_p2p_fwd [2][QUDA_MAX_DIM] { }

static int	buffer_send_p2p_back [2][QUDA_MAX_DIM] { }

static int	buffer_recv_p2p_back [2][QUDA_MAX_DIM] { }

static cudaEvent_t	ipcCopyEvent [2][2][QUDA_MAX_DIM]

static cudaEvent_t	ipcRemoteCopyEvent [2][2][QUDA_MAX_DIM]

static bool	initIPCComms = false

Detailed Description

Definition at line 298 of file gauge_field.h.

Constructor & Destructor Documentation

◆ cudaGaugeField()

quda::cudaGaugeField::cudaGaugeField ( const GaugeFieldParam & param )

Definition at line 8 of file cuda_gauge_field.cu.

References quda::GaugeField::bytes, quda::GaugeField::create, errorQuda, even, exchangeGhost(), gauge, quda::GaugeField::geometry, quda::GaugeField::ghost, quda::LatticeField::ghostExchange, fused_exterior_ndeg_tm_dslash_cuda_gen::i, quda::GaugeField::isNative(), quda::GaugeField::link_type, quda::LatticeField::nDim, quda::GaugeField::nFace, quda::GaugeField::nInternal, odd, quda::GaugeField::order, quda::LatticeField::pad, param, quda::GaugeField::phase_offset, pool_device_malloc, quda::LatticeField::precision, QUDA_ASQTAD_MOM_LINKS, QUDA_BQCD_GAUGE_ORDER, QUDA_COARSE_GEOMETRY, QUDA_CPS_WILSON_GAUGE_ORDER, QUDA_GHOST_EXCHANGE_PAD, QUDA_LINK_BACKWARDS, QUDA_LINK_BIDIRECTIONAL, QUDA_NULL_FIELD_CREATE, QUDA_QDP_GAUGE_ORDER, QUDA_QDPJIT_GAUGE_ORDER, QUDA_RECONSTRUCT_13, QUDA_RECONSTRUCT_9, QUDA_REFERENCE_FIELD_CREATE, QUDA_TIFR_GAUGE_ORDER, QUDA_TIFR_PADDED_GAUGE_ORDER, QUDA_VECTOR_GEOMETRY, QUDA_ZERO_FIELD_CREATE, quda::GaugeField::reconstruct, quda::LatticeField::surface, quda::LatticeField::surfaceCB, and tex.

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◆ ~cudaGaugeField()

quda::cudaGaugeField::~cudaGaugeField ( )

virtual

Definition at line 156 of file cuda_gauge_field.cu.

References quda::GaugeField::create, quda::LatticeField::destroyComms(), gauge, quda::GaugeField::geometry, quda::GaugeField::ghost, fused_exterior_ndeg_tm_dslash_cuda_gen::i, quda::GaugeField::isNative(), quda::LatticeField::nDim, pool_device_free, QUDA_COARSE_GEOMETRY, and QUDA_REFERENCE_FIELD_CREATE.

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Member Function Documentation

◆ allocateGhostBuffer()

void quda::cudaGaugeField::allocateGhostBuffer	(	const int *	R,
		bool	no_comms_fill
	)		const

Allocate the ghost buffers.

Parameters

R	The thickness of the extended region in each dimension
no_comms_fill	Do local exchange to fill out the extended region in non-partitioned dimensions

Definition at line 344 of file cuda_gauge_field.cu.

References quda::LatticeField::allocateGhostBuffer(), quda::GaugeField::createGhostZone(), quda::LatticeField::ghost_bytes, and quda::LatticeField::R().

Referenced by createComms().

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◆ backup()

void quda::cudaGaugeField::backup ( ) const

virtual

Backs up the cudaGaugeField to CPU memory.

Reimplemented from quda::LatticeField.

Definition at line 777 of file cuda_gauge_field.cu.

References quda::LatticeField::backed_up, quda::LatticeField::backup_h, quda::GaugeField::bytes, checkCudaError, errorQuda, and gauge.

◆ commsComplete()

void quda::cudaGaugeField::commsComplete	(	int	dim,
		int	dir
	)

Wait for communication to complete.

Parameters

[in]	dim	The communication dimension
[in]	dir	The communication direction (0=backwards, 1=forwards)

Definition at line 428 of file cuda_gauge_field.cu.

Referenced by exchangeExtendedGhost(), exchangeGhost(), and injectGhost().

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◆ copy()

void quda::cudaGaugeField::copy ( const GaugeField & src )

virtual

Generic gauge field copy

Parameters

[in] src Source from which we are copying

Implements quda::GaugeField.

Definition at line 587 of file cuda_gauge_field.cu.

Referenced by computeHISQForceQuda(), initFields(), quda::DiracCoarse::initializeCoarse(), loadCPUField(), loadGaugeQuda(), loadSloppyGaugeQuda(), performAPEnStep(), performOvrImpSTOUTnStep(), and performSTOUTnStep().

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◆ createComms()

void quda::cudaGaugeField::createComms	(	const int *	R,
		bool	no_comms_fill
	)

Create the communication handlers and buffers.

Parameters

R	The thickness of the extended region in each dimension
no_comms_fill	Do local exchange to fill out the extended region in non-partitioned dimensions

Definition at line 350 of file cuda_gauge_field.cu.

References allocateGhostBuffer(), quda::LatticeField::createComms(), quda::LatticeField::createIPCComms(), quda::LatticeField::destroyIPCComms(), quda::LatticeField::ghost_field_reset, quda::LatticeField::ghost_pinned_buffer_h, quda::LatticeField::initComms, quda::LatticeField::my_face_h, and quda::LatticeField::R().

Referenced by exchangeExtendedGhost(), exchangeGhost(), and injectGhost().

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◆ Even_p() [1/2]

void* quda::cudaGaugeField::Even_p ( )

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 430 of file gauge_field.h.

References even.

◆ Even_p() [2/2]

const void* quda::cudaGaugeField::Even_p ( ) const

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 434 of file gauge_field.h.

References even.

◆ exchangeExtendedGhost() [1/2]

void quda::cudaGaugeField::exchangeExtendedGhost	(	const int *	R,
		bool	no_comms_fill = `false`
	)

This does routine will populate the border / halo region of a gauge field that has been created using copyExtendedGauge.

Parameters

R	The thickness of the extended region in each dimension
no_comms_fill	Do local exchange to fill out the extended region in non-partitioned dimensions

Definition at line 471 of file cuda_gauge_field.cu.

Referenced by computeHISQForceQuda(), exchangeExtendedGhost(), hisq_force_test(), performAPEnStep(), performOvrImpSTOUTnStep(), and performSTOUTnStep().

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◆ exchangeExtendedGhost() [2/2]

void quda::cudaGaugeField::exchangeExtendedGhost	(	const int *	R,
		TimeProfile &	profile,
		bool	no_comms_fill = `false`
	)

This does routine will populate the border / halo region of a gauge field that has been created using copyExtendedGauge. Overloaded variant that will start and stop a comms profile.

Parameters

R	The thickness of the extended region in each dimension
profile	TimeProfile intance which will record the time taken
no_comms_fill	Do local exchange to fill out the extended region in non-partitioned dimensions

Definition at line 533 of file cuda_gauge_field.cu.

References exchangeExtendedGhost(), quda::QUDA_PROFILE_COMMS, and quda::LatticeField::R().

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◆ exchangeGhost()

void quda::cudaGaugeField::exchangeGhost ( QudaLinkDirection link_direction = QUDA_LINK_BACKWARDS )

virtual

Exchange the ghost and store store in the padded region.

Parameters

[in] link_direction Which links are we exchanging: this flag only applies to bi-directional coarse-link fields

Implements quda::GaugeField.

Definition at line 179 of file cuda_gauge_field.cu.

Referenced by quda::GaugeField::applyStaggeredPhase(), copy(), cudaGaugeField(), loadGaugeQuda(), performWuppertalnStep(), and quda::GaugeField::removeStaggeredPhase().

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◆ Gauge_p() [1/2]

void* quda::cudaGaugeField::Gauge_p ( )

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 429 of file gauge_field.h.

References gauge.

Referenced by quda::calculateY(), computeHISQForceQuda(), and main().

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◆ Gauge_p() [2/2]

const void* quda::cudaGaugeField::Gauge_p ( ) const

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 433 of file gauge_field.h.

References gauge.

◆ injectGhost()

void quda::cudaGaugeField::injectGhost ( QudaLinkDirection link_direction = QUDA_LINK_BACKWARDS )

virtual

The opposite of exchangeGhost: take the ghost zone on x, send to node x-1, and inject back into the field.

Parameters

[in] link_direction Which links are we injecting: this flag only applies to bi-directional coarse-link fields

Implements quda::GaugeField.

Definition at line 264 of file cuda_gauge_field.cu.

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◆ loadCPUField() [1/2]

void quda::cudaGaugeField::loadCPUField ( const cpuGaugeField & cpu )

Download into this field from a CPU field.

Parameters

[in] cpu The CPU field source

Definition at line 690 of file cuda_gauge_field.cu.

References checkCudaError, copy(), and quda::qudaDeviceSynchronize().

Referenced by computeGaugeFixingFFTQuda(), computeGaugeFixingOVRQuda(), computeGaugeForceQuda(), computeHISQForceQuda(), computeKSLinkQuda(), computeStaggeredForceQuda(), createGaugeFieldQuda(), hisq_force_init(), hisq_force_test(), loadCPUField(), momActionQuda(), packTest(), projectSU3Quda(), staggeredPhaseQuda(), unitarize_link_test(), and updateGaugeFieldQuda().

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◆ loadCPUField() [2/2]

void quda::cudaGaugeField::loadCPUField	(	const cpuGaugeField &	cpu,
		TimeProfile &	profile
	)

Download into this field from a CPU field. Overloaded variant that includes profiling.

Parameters

[in]	cpu	The CPU field source
[in]	profile	Time profile to record the transfer

Definition at line 696 of file cuda_gauge_field.cu.

References loadCPUField(), and quda::QUDA_PROFILE_H2D.

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◆ Odd_p() [1/2]

void* quda::cudaGaugeField::Odd_p ( )

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 431 of file gauge_field.h.

References odd.

◆ Odd_p() [2/2]

const void* quda::cudaGaugeField::Odd_p ( ) const

inlinevirtual

Reimplemented from quda::GaugeField.

Definition at line 435 of file gauge_field.h.

References odd.

◆ recvStart()

void quda::cudaGaugeField::recvStart	(	int	dim,
		int	dir
	)

Start the receive communicators.

Parameters

[in]	dim	The communication dimension
[in]	dir	The communication direction (0=backwards, 1=forwards)

Definition at line 364 of file cuda_gauge_field.cu.

References quda::LatticeField::bufferIndex, comm_dim_partitioned(), comm_gdr_enabled(), comm_peer2peer_enabled(), comm_start(), dim, quda::LatticeField::mh_recv_back, quda::LatticeField::mh_recv_fwd, quda::LatticeField::mh_recv_p2p_back, quda::LatticeField::mh_recv_p2p_fwd, quda::LatticeField::mh_recv_rdma_back, and quda::LatticeField::mh_recv_rdma_fwd.

Referenced by exchangeExtendedGhost(), exchangeGhost(), and injectGhost().

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◆ restore()

void quda::cudaGaugeField::restore ( )

virtual

Restores the cudaGaugeField to CUDA memory.

Reimplemented from quda::LatticeField.

Definition at line 785 of file cuda_gauge_field.cu.

References quda::LatticeField::backed_up, quda::LatticeField::backup_h, quda::GaugeField::bytes, checkCudaError, errorQuda, and gauge.

◆ saveCPUField() [1/2]

void quda::cudaGaugeField::saveCPUField ( cpuGaugeField & cpu ) const

Upload from this field into a CPU field.

Parameters

[out] cpu The CPU field source

Definition at line 702 of file cuda_gauge_field.cu.

References quda::GaugeField::bytes, quda::GaugeField::Bytes(), checkCudaError, quda::GaugeField::checkField(), quda::copyExtendedGauge(), quda::copyGenericGauge(), quda::create_gauge_buffer(), quda::create_ghost_buffer(), d, errorQuda, quda::free_gauge_buffer(), quda::free_ghost_buffer(), gauge, quda::cpuGaugeField::gauge, quda::cpuGaugeField::Gauge_p(), quda::GaugeField::geometry, quda::GaugeField::Geometry(), quda::GaugeField::Ghost(), quda::LatticeField::ghost_bytes, quda::LatticeField::GhostExchange(), quda::GaugeField::nColor, quda::GaugeField::nFace, quda::GaugeField::Order(), pool_pinned_free, pool_pinned_malloc, quda::LatticeField::Precision(), QUDA_BQCD_GAUGE_ORDER, QUDA_COARSE_GEOMETRY, QUDA_CPU_FIELD_LOCATION, QUDA_CUDA_FIELD_LOCATION, QUDA_GHOST_EXCHANGE_EXTENDED, QUDA_GHOST_EXCHANGE_NO, QUDA_GHOST_EXCHANGE_PAD, QUDA_MILC_SITE_GAUGE_ORDER, QUDA_QDP_GAUGE_ORDER, QUDA_RECONSTRUCT_NO, quda::qudaDeviceSynchronize(), qudaMemcpy, quda::GaugeField::Reconstruct(), quda::reorder_location(), quda::GaugeField::staggeredPhaseApplied, quda::GaugeField::staggeredPhaseType, and quda::LatticeField::surface.

Referenced by quda::CoarseOp(), computeCloverForceQuda(), computeGaugeFixingFFTQuda(), computeGaugeFixingOVRQuda(), computeGaugeForceQuda(), computeHISQForceQuda(), computeKSLinkQuda(), computeStaggeredForceQuda(), hisq_force_test(), packTest(), projectSU3Quda(), saveCPUField(), saveGaugeFieldQuda(), saveGaugeQuda(), staggeredPhaseQuda(), TEST(), and updateGaugeFieldQuda().

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◆ saveCPUField() [2/2]

void quda::cudaGaugeField::saveCPUField	(	cpuGaugeField &	cpu,
		TimeProfile &	profile
	)		const

Upload from this field into a CPU field. Overloaded variant that includes profiling.

Parameters

[out]	cpu	The CPU field source
[in]	profile	Time profile to record the transfer

Definition at line 771 of file cuda_gauge_field.cu.

References quda::QUDA_PROFILE_D2H, and saveCPUField().

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◆ sendStart()

void quda::cudaGaugeField::sendStart	(	int	dim,
		int	dir,
		cudaStream_t *	stream_p = `nullptr`
	)

Start the sending communicators.

Parameters

[in]	dim	The communication dimension
[in]	dir	The communication direction (0=backwards, 1=forwards)
[in]	stream_p	Pointer to CUDA stream to post the communication in (if 0, then use null stream)

Definition at line 389 of file cuda_gauge_field.cu.