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blake: sometimes faster, or not

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This commit is contained in:
Tanguy Pruvot 2014-09-05 21:12:38 +02:00
parent b98239ec2a
commit ecc86af102
1 changed files with 14 additions and 28 deletions
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42
blake32.cu
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@ -34,6 +34,8 @@ extern "C" void blake256hash(void *output, const void *input, int rounds = 14)
#include "cuda_helper.h" #include "cuda_helper.h"
#define MAXU 0xffffffffU
// in cpu-miner.c // in cpu-miner.c
extern bool opt_n_threads; extern bool opt_n_threads;
extern bool opt_benchmark; extern bool opt_benchmark;
@ -47,22 +49,13 @@ static uint32_t __align__(32) c_Target[8];
__constant__ __constant__
static uint32_t __align__(32) c_data[20]; static uint32_t __align__(32) c_data[20];
#define MAXU 0xffffffffU
static uint32_t *d_resNounce[8]; static uint32_t *d_resNounce[8];
static uint32_t *h_resNounce[8]; static uint32_t *h_resNounce[8];
__constant__
#ifdef WIN32
/* what the fuck ! */
static uint8_t c_sigma[16][16];
const uint8_t host_sigma[16][16]
#else
/* prefer uint32_t to prevent size conversions = speed +5/10 % */ /* prefer uint32_t to prevent size conversions = speed +5/10 % */
__constant__
static uint32_t __align__(32) c_sigma[16][16]; static uint32_t __align__(32) c_sigma[16][16];
const uint32_t host_sigma[16][16] const uint32_t host_sigma[16][16] = {
#endif
= {
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }, {14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 }, {11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
@ -152,28 +145,19 @@ __device__ static
void blake256_compress(uint32_t *h, const uint32_t *block, const uint32_t T0, int blakerounds) void blake256_compress(uint32_t *h, const uint32_t *block, const uint32_t T0, int blakerounds)
{ {
uint32_t /* __align__(8) */ m[16]; uint32_t /* __align__(8) */ m[16];
uint32_t /* __align__(8) */ v[16];
m[0] = block[0]; m[0] = block[0];
m[1] = block[1]; m[1] = block[1];
m[2] = block[2]; m[2] = block[2];
m[3] = block[3]; m[3] = block[3];
if (T0 == 0x200) { for (uint32_t i = 4; i < 16; i++) {
//#pragma unroll 12 m[i] = (T0 == 0x200) ? block[i] : c_Padding[i];
for (int i = 4; i < 16; ++i) {
m[i] = block[i];
}
} else {
//#pragma unroll 12
for (int i = 4; i < 16; ++i) {
m[i] = c_Padding[i];
}
} }
uint32_t /* __align__(8) */ v[16];
//#pragma unroll 8 //#pragma unroll 8
for(int i = 0; i < 8; i++) for(uint32_t i = 0; i < 8; i++)
v[i] = h[i]; v[i] = h[i];
v[ 8] = c_u256[0]; v[ 8] = c_u256[0];
@ -200,8 +184,10 @@ void blake256_compress(uint32_t *h, const uint32_t *block, const uint32_t T0, in
} }
//#pragma unroll 16 //#pragma unroll 16
for(int i = 0; i < 16; i++) for (uint32_t i = 0; i < 16; i++) {
h[i % 8] ^= v[i]; uint32_t j = i % 8;
h[j] ^= v[i];
}
} }
__global__ __global__
@ -306,13 +292,13 @@ extern "C" int scanhash_blake256(int thr_id, uint32_t *pdata, const uint32_t *pt
do { do {
// GPU HASH // GPU HASH
uint32_t foundNonce = blake256_cpu_hash_80(thr_id, throughput, pdata[19], blakerounds); uint32_t foundNonce = blake256_cpu_hash_80(thr_id, throughput, pdata[19], blakerounds);
if (foundNonce != 0xffffffff) if (foundNonce != MAXU)
{ {
uint32_t endiandata[20]; uint32_t endiandata[20];
uint32_t vhashcpu[8]; uint32_t vhashcpu[8];
uint32_t Htarg = ptarget[7]; uint32_t Htarg = ptarget[7];
for (int k=0; k < 20; k++) for (int k=0; k < 19; k++)
be32enc(&endiandata[k], pdata[k]); be32enc(&endiandata[k], pdata[k]);
be32enc(&endiandata[19], foundNonce); be32enc(&endiandata[19], foundNonce);