cudpp_globals.h File Reference

Global declarations defining machine characteristics of GPU target These are currently set for best performance on G8X GPUs. The optimal parameters may change on future GPUs. In the future, we hope to make CUDPP a self-tuning library. More...

Defines
#define	__EMUSYNC
	Macro to insert necessary __syncthreads() in device emulation mode.
#define	AVOID_BANK_CONFLICTS
Variables
const int	NUM_BANKS = 16
const int	LOG_NUM_BANKS = 4
const int	CTA_SIZE = 128
const int	WARP_SIZE = 32
const int	LOG_CTA_SIZE = 7
const int	LOG_WARP_SIZE = 5
const int	LOG_SIZEOF_FLOAT = 2
const int	SCAN_ELTS_PER_THREAD = 8
const int	SEGSCAN_ELTS_PER_THREAD = 8
const int	maxSharedMemoryPerBlock = 16384
const int	maxThreadsPerBlock = CTA_SIZE

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Detailed Description

Global declarations defining machine characteristics of GPU target These are currently set for best performance on G8X GPUs. The optimal parameters may change on future GPUs. In the future, we hope to make CUDPP a self-tuning library.

cudpp_globals.h

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Define Documentation

#define AVOID_BANK_CONFLICTS

Set if by default, we want our shared memory allocation to perform additional computation to avoid bank conflicts

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Variable Documentation

const int NUM_BANKS = 16

Number of shared memory banks

const int LOG_NUM_BANKS = 4

log_2(NUM_BANKS)

const int CTA_SIZE = 128

Number of threads in a CTA

const int WARP_SIZE = 32

Number of threads in a warp

const int LOG_CTA_SIZE = 7

log_2(CTA_SIZE)

const int LOG_WARP_SIZE = 5

log_2(WARP_SIZE)

const int LOG_SIZEOF_FLOAT = 2

log_2(sizeof(float))

const int SCAN_ELTS_PER_THREAD = 8

Number of elements per scan thread

const int SEGSCAN_ELTS_PER_THREAD = 8

Number of elements per segmented scan thread

const int maxSharedMemoryPerBlock = 16384

Number of bytes of shared memory in each block

const int maxThreadsPerBlock = CTA_SIZE

Maximum number of threads in a CTA