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~10% speedup

2upstream
pallas1 9 years ago committed by Tanguy Pruvot
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1 changed files with 138 additions and 118 deletions
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  1. 238
      Algo256/decred.cu

238
Algo256/decred.cu
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@ -2,6 +2,8 @@ @@ -2,6 +2,8 @@
* Blake-256 Decred 180-Bytes input Cuda Kernel (Tested on SM 5/5.2)
*
* Tanguy Pruvot - Feb 2016
*
* Revised for optimisation by pallas @ bitcointalk - Apr 2016
*/
#include <stdint.h>
@ -14,7 +16,9 @@ extern "C" { @@ -14,7 +16,9 @@ extern "C" {
}
/* threads per block */
#define TPB 256
#define TPB 512
/* nonces per round */
#define NPR 128
/* hash by cpu with blake 256 */
extern "C" void decred_hash(void *output, const void *input)
@ -46,6 +50,7 @@ static uint32_t *h_resNonce[MAX_GPUS]; @@ -46,6 +50,7 @@ static uint32_t *h_resNonce[MAX_GPUS];
static uint32_t extra_results[NBN] = { UINT32_MAX };
#endif
/* ############################################################################################################################### */
#define GSPREC(a,b,c,d,x,y) { \
@ -59,107 +64,106 @@ static uint32_t extra_results[NBN] = { UINT32_MAX }; @@ -59,107 +64,106 @@ static uint32_t extra_results[NBN] = { UINT32_MAX };
v[b] = SPH_ROTR32(v[b] ^ v[c], 7); \
}
__device__ __forceinline__
void blake256_compress_14(uint32_t *h, const uint32_t nonce, const uint32_t T0)
{
uint32_t v[16];
#pragma unroll 8
for(uint32_t i = 0; i < 8; i++)
v[i] = h[i];
#define GSPREC4(a0,b0,c0,d0,x0,y0,a1,b1,c1,d1,x1,y1,a2,b2,c2,d2,x2,y2,a3,b3,c3,d3,x3,y3) { \
v[a0] += (m[x0] ^ c_u256[y0]) + v[b0]; \
v[a1] += (m[x1] ^ c_u256[y1]) + v[b1]; \
v[a2] += (m[x2] ^ c_u256[y2]) + v[b2]; \
v[a3] += (m[x3] ^ c_u256[y3]) + v[b3]; \
v[d0] = __byte_perm(v[d0] ^ v[a0], 0, 0x1032); \
v[d1] = __byte_perm(v[d1] ^ v[a1], 0, 0x1032); \
v[d2] = __byte_perm(v[d2] ^ v[a2], 0, 0x1032); \
v[d3] = __byte_perm(v[d3] ^ v[a3], 0, 0x1032); \
v[c0] += v[d0]; \
v[c1] += v[d1]; \
v[c2] += v[d2]; \
v[c3] += v[d3]; \
v[b0] = SPH_ROTR32(v[b0] ^ v[c0], 12); \
v[b1] = SPH_ROTR32(v[b1] ^ v[c1], 12); \
v[b2] = SPH_ROTR32(v[b2] ^ v[c2], 12); \
v[b3] = SPH_ROTR32(v[b3] ^ v[c3], 12); \
v[a0] += (m[y0] ^ c_u256[x0]) + v[b0]; \
v[a1] += (m[y1] ^ c_u256[x1]) + v[b1]; \
v[a2] += (m[y2] ^ c_u256[x2]) + v[b2]; \
v[a3] += (m[y3] ^ c_u256[x3]) + v[b3]; \
v[d0] = __byte_perm(v[d0] ^ v[a0], 0, 0x0321); \
v[d1] = __byte_perm(v[d1] ^ v[a1], 0, 0x0321); \
v[d2] = __byte_perm(v[d2] ^ v[a2], 0, 0x0321); \
v[d3] = __byte_perm(v[d3] ^ v[a3], 0, 0x0321); \
v[c0] += v[d0]; \
v[c1] += v[d1]; \
v[c2] += v[d2]; \
v[c3] += v[d3]; \
v[b0] = SPH_ROTR32(v[b0] ^ v[c0], 7); \
v[b1] = SPH_ROTR32(v[b1] ^ v[c1], 7); \
v[b2] = SPH_ROTR32(v[b2] ^ v[c2], 7); \
v[b3] = SPH_ROTR32(v[b3] ^ v[c3], 7); \
}
const uint32_t c_u256[16] = {
static const __constant__ uint32_t c_u256[16] = {
0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344,
0xA4093822, 0x299F31D0, 0x082EFA98, 0xEC4E6C89,
0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C,
0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, 0xB5470917
};
v[ 8] = c_u256[0];
v[ 9] = c_u256[1];
v[10] = c_u256[2];
v[11] = c_u256[3];
v[12] = c_u256[4] ^ T0;
v[13] = c_u256[5] ^ T0;
v[14] = c_u256[6];
v[15] = c_u256[7];
uint32_t m[16];
m[0] = d_data[8];
m[1] = d_data[9];
m[2] = d_data[10];
m[3] = nonce;
__device__ __forceinline__
uint32_t blake256_compress_14(uint32_t *m, uint32_t *v_init, uint32_t d_data6, uint32_t d_data7)
{
uint32_t v[16];
#pragma unroll
for (uint32_t i = 4; i < 16; i++) {
m[i] = d_data[i+8U];
}
for (uint32_t i = 0; i < 16; i++) v[i] = v_init[i];
// these two are not modified:
v[ 9] = 0x85A308D3;
v[13] = 0x299F31D0 ^ (180U*8U);
// round 1
GSPREC(0, 4, 0x8, 0xC, 0, 1);
// round 1 with nonce
GSPREC(1, 5, 0x9, 0xD, 2, 3);
GSPREC(2, 6, 0xA, 0xE, 4, 5);
GSPREC(3, 7, 0xB, 0xF, 6, 7);
GSPREC(0, 5, 0xA, 0xF, 8, 9);
GSPREC(1, 6, 0xB, 0xC, 10, 11);
GSPREC(2, 7, 0x8, 0xD, 12, 13);
GSPREC(3, 4, 0x9, 0xE, 14, 15);
// round 2
GSPREC(0, 4, 0x8, 0xC, 14, 10);
GSPREC(1, 5, 0x9, 0xD, 4, 8);
GSPREC(2, 6, 0xA, 0xE, 9, 15);
GSPREC(3, 7, 0xB, 0xF, 13, 6);
GSPREC(0, 5, 0xA, 0xF, 1, 12);
GSPREC(1, 6, 0xB, 0xC, 0, 2);
GSPREC(2, 7, 0x8, 0xD, 11, 7);
GSPREC(3, 4, 0x9, 0xE, 5, 3);
GSPREC4(0, 4, 0x8, 0xC, 14, 10, 1, 5, 0x9, 0xD, 4, 8, 2, 6, 0xA, 0xE, 9, 15, 3, 7, 0xB, 0xF, 13, 6);
GSPREC4(0, 5, 0xA, 0xF, 1, 12, 1, 6, 0xB, 0xC, 0, 2, 2, 7, 0x8, 0xD, 11, 7, 3, 4, 0x9, 0xE, 5, 3);
// round 3
GSPREC(0, 4, 0x8, 0xC, 11, 8);
GSPREC(1, 5, 0x9, 0xD, 12, 0);
GSPREC(2, 6, 0xA, 0xE, 5, 2);
GSPREC(3, 7, 0xB, 0xF, 15, 13);
GSPREC(0, 5, 0xA, 0xF, 10, 14);
GSPREC(1, 6, 0xB, 0xC, 3, 6);
GSPREC(2, 7, 0x8, 0xD, 7, 1);
GSPREC(3, 4, 0x9, 0xE, 9, 4);
GSPREC4(0, 4, 0x8, 0xC, 11, 8, 1, 5, 0x9, 0xD, 12, 0, 2, 6, 0xA, 0xE, 5, 2, 3, 7, 0xB, 0xF, 15, 13);
GSPREC4(0, 5, 0xA, 0xF, 10, 14, 1, 6, 0xB, 0xC, 3, 6, 2, 7, 0x8, 0xD, 7, 1, 3, 4, 0x9, 0xE, 9, 4);
// round 4
GSPREC(0, 4, 0x8, 0xC, 7, 9);
GSPREC(1, 5, 0x9, 0xD, 3, 1);
GSPREC(2, 6, 0xA, 0xE, 13, 12);
GSPREC(3, 7, 0xB, 0xF, 11, 14);
GSPREC(0, 5, 0xA, 0xF, 2, 6);
GSPREC(1, 6, 0xB, 0xC, 5, 10);
GSPREC(2, 7, 0x8, 0xD, 4, 0);
GSPREC(3, 4, 0x9, 0xE, 15, 8);
GSPREC4(0, 4, 0x8, 0xC, 7, 9, 1, 5, 0x9, 0xD, 3, 1, 2, 6, 0xA, 0xE, 13, 12, 3, 7, 0xB, 0xF, 11, 14);
GSPREC4(0, 5, 0xA, 0xF, 2, 6, 1, 6, 0xB, 0xC, 5, 10, 2, 7, 0x8, 0xD, 4, 0, 3, 4, 0x9, 0xE, 15, 8);
// round 5
GSPREC(0, 4, 0x8, 0xC, 9, 0);
GSPREC(1, 5, 0x9, 0xD, 5, 7);
GSPREC(2, 6, 0xA, 0xE, 2, 4);
GSPREC(3, 7, 0xB, 0xF, 10, 15);
GSPREC(0, 5, 0xA, 0xF, 14, 1);
GSPREC(1, 6, 0xB, 0xC, 11, 12);
GSPREC(2, 7, 0x8, 0xD, 6, 8);
GSPREC(3, 4, 0x9, 0xE, 3, 13);
GSPREC4(0, 4, 0x8, 0xC, 9, 0, 1, 5, 0x9, 0xD, 5, 7, 2, 6, 0xA, 0xE, 2, 4, 3, 7, 0xB, 0xF, 10, 15);
GSPREC4(0, 5, 0xA, 0xF, 14, 1, 1, 6, 0xB, 0xC, 11, 12, 2, 7, 0x8, 0xD, 6, 8, 3, 4, 0x9, 0xE, 3, 13);
// round 6
GSPREC(0, 4, 0x8, 0xC, 2, 12);
GSPREC(1, 5, 0x9, 0xD, 6, 10);
GSPREC(2, 6, 0xA, 0xE, 0, 11);
GSPREC(3, 7, 0xB, 0xF, 8, 3);
GSPREC(0, 5, 0xA, 0xF, 4, 13);
GSPREC(1, 6, 0xB, 0xC, 7, 5);
GSPREC(2, 7, 0x8, 0xD, 15,14);
GSPREC(3, 4, 0x9, 0xE, 1, 9);
GSPREC4(0, 4, 0x8, 0xC, 2, 12, 1, 5, 0x9, 0xD, 6, 10, 2, 6, 0xA, 0xE, 0, 11, 3, 7, 0xB, 0xF, 8, 3);
GSPREC4(0, 5, 0xA, 0xF, 4, 13, 1, 6, 0xB, 0xC, 7, 5, 2, 7, 0x8, 0xD, 15,14, 3, 4, 0x9, 0xE, 1, 9);
// round 7
GSPREC(0, 4, 0x8, 0xC, 12, 5);
GSPREC(1, 5, 0x9, 0xD, 1, 15);
GSPREC(2, 6, 0xA, 0xE, 14,13);
GSPREC(3, 7, 0xB, 0xF, 4, 10);
GSPREC(0, 5, 0xA, 0xF, 0, 7);
GSPREC(1, 6, 0xB, 0xC, 6, 3);
GSPREC(2, 7, 0x8, 0xD, 9, 2);
GSPREC(3, 4, 0x9, 0xE, 8, 11);
GSPREC4(0, 4, 0x8, 0xC, 12, 5, 1, 5, 0x9, 0xD, 1, 15, 2, 6, 0xA, 0xE, 14,13, 3, 7, 0xB, 0xF, 4, 10);
GSPREC4(0, 5, 0xA, 0xF, 0, 7, 1, 6, 0xB, 0xC, 6, 3, 2, 7, 0x8, 0xD, 9, 2, 3, 4, 0x9, 0xE, 8, 11);
/*
// round 8
GSPREC4(0, 4, 0x8, 0xC, 13,11, 1, 5, 0x9, 0xD, 7, 14, 2, 6, 0xA, 0xE, 12, 1, 3, 7, 0xB, 0xF, 3, 9);
GSPREC4(0, 5, 0xA, 0xF, 5, 0, 1, 6, 0xB, 0xC, 15, 4, 2, 7, 0x8, 0xD, 8, 6, 3, 4, 0x9, 0xE, 2, 10);
// round 9
GSPREC4(0, 4, 0x8, 0xC, 6, 15, 1, 5, 0x9, 0xD, 14, 9, 2, 6, 0xA, 0xE, 11, 3, 3, 7, 0xB, 0xF, 0, 8);
GSPREC4(0, 5, 0xA, 0xF, 12, 2, 1, 6, 0xB, 0xC, 13, 7, 2, 7, 0x8, 0xD, 1, 4, 3, 4, 0x9, 0xE, 10, 5);
// round 10
GSPREC4(0, 4, 0x8, 0xC, 10, 2, 1, 5, 0x9, 0xD, 8, 4, 2, 6, 0xA, 0xE, 7, 6, 3, 7, 0xB, 0xF, 1, 5);
GSPREC4(0, 5, 0xA, 0xF, 15,11, 1, 6, 0xB, 0xC, 9, 14, 2, 7, 0x8, 0xD, 3, 12, 3, 4, 0x9, 0xE, 13, 0);
// round 11
GSPREC4(0, 4, 0x8, 0xC, 0, 1, 1, 5, 0x9, 0xD, 2, 3, 2, 6, 0xA, 0xE, 4, 5, 3, 7, 0xB, 0xF, 6, 7);
GSPREC4(0, 5, 0xA, 0xF, 8, 9, 1, 6, 0xB, 0xC, 10,11, 2, 7, 0x8, 0xD, 12,13, 3, 4, 0x9, 0xE, 14,15);
// round 12
GSPREC4(0, 4, 0x8, 0xC, 14,10, 1, 5, 0x9, 0xD, 4, 8, 2, 6, 0xA, 0xE, 9, 15, 3, 7, 0xB, 0xF, 13, 6);
GSPREC4(0, 5, 0xA, 0xF, 1, 12, 1, 6, 0xB, 0xC, 0, 2, 2, 7, 0x8, 0xD, 11, 7, 3, 4, 0x9, 0xE, 5, 3);
// round 13
GSPREC4(0, 4, 0x8, 0xC, 11, 8, 1, 5, 0x9, 0xD, 12, 0, 2, 6, 0xA, 0xE, 5, 2, 3, 7, 0xB, 0xF, 15,13);
GSPREC4(0, 5, 0xA, 0xF, 10,14, 1, 6, 0xB, 0xC, 3, 6, 2, 7, 0x8, 0xD, 7, 1, 3, 4, 0x9, 0xE, 9, 4);
*/
// round 8
GSPREC(0, 4, 0x8, 0xC, 13,11);
GSPREC(1, 5, 0x9, 0xD, 7, 14);
@ -220,68 +224,81 @@ void blake256_compress_14(uint32_t *h, const uint32_t nonce, const uint32_t T0) @@ -220,68 +224,81 @@ void blake256_compress_14(uint32_t *h, const uint32_t nonce, const uint32_t T0)
GSPREC(2, 6, 0xA, 0xE, 13,12);
GSPREC(3, 7, 0xB, 0xF, 11,14);
GSPREC(0, 5, 0xA, 0xF, 2, 6);
GSPREC(1, 6, 0xB, 0xC, 5, 10);
GSPREC(2, 7, 0x8, 0xD, 4, 0);
//GSPREC(3, 4, 0x9, 0xE, 15, 8);
v[3] += (m[15] ^ c_u256[8]) + v[4];
v[14] = __byte_perm(v[14] ^ v[3], 0, 0x1032);
v[9] += v[14]; \
v[4] = SPH_ROTR32(v[4] ^ v[9], 12);
v[3] += (m[8] ^ c_u256[15]) + v[4];
v[14] = __byte_perm(v[14] ^ v[3], 0, 0x0321);
// only compute h6 & 7
h[6] ^= v[6] ^ v[14];
h[7] ^= v[7] ^ v[15];
if ((d_data7 ^ v[7] ^ v[15]) == 0) {
GSPREC(1, 6, 0xB, 0xC, 5, 10);
GSPREC(3, 4, 0x9, 0xE, 15, 8);
return (d_data6 ^ v[6] ^ v[14]);
}
return UINT32_MAX;
}
/* ############################################################################################################################### */
// ------ Close: Last 52/64 bytes ------
__global__
void blake256_gpu_hash_nonce(const uint32_t threads, const uint32_t startNonce, uint32_t *resNonce, const uint64_t highTarget)
{
uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
if (thread < threads)
// if (thread < threads)
{
const uint32_t nonce = startNonce + thread;
uint32_t h[8];
const uint32_t nonce = startNonce + thread * NPR;
uint32_t m[16], v[16], temp;
const uint32_t d_data6 = d_data[6], d_data7 = d_data[7];
#pragma unroll
for(int i=0; i < 8; i++) {
h[i] = d_data[i];
}
for(int i = 0; i < 8; i++) v[i] = d_data[i];
// ------ Close: Last 52/64 bytes ------
#pragma unroll
for (uint32_t i = 0; i < 16; i++) m[i] = d_data[i+8U];
v[ 8] = 0x243F6A88;
v[ 9] = 0x85A308D3;
v[10] = 0x13198A2E;
v[11] = 0x03707344;
blake256_compress_14(h, nonce, (180U*8U));
v[12] = 0xA4093822 ^ (180U*8U);
v[13] = 0x299F31D0 ^ (180U*8U);
v[14] = 0x082EFA98;
v[15] = 0xEC4E6C89;
// round 1 without nonce
GSPREC(0, 4, 0x8, 0xC, 0, 1);
GSPREC(2, 6, 0xA, 0xE, 4, 5);
GSPREC(3, 7, 0xB, 0xF, 6, 7);
if (h[7] == 0 && cuda_swab32(h[6]) <= highTarget) {
for (m[3] = nonce; m[3] < nonce + NPR; m[3]++) {
temp = blake256_compress_14(m, v, d_data6, d_data7);
if (temp != UINT32_MAX && cuda_swab32(temp) <= highTarget) {
#if NBN == 2
if (resNonce[0] != UINT32_MAX)
resNonce[1] = nonce;
else
resNonce[0] = nonce;
if (resNonce[0] != UINT32_MAX) resNonce[1] = m[3];
else resNonce[0] = m[3];
#else
resNonce[0] = nonce;
resNonce[0] = m[3];
#endif
}
}
}
}
__host__
static uint32_t decred_cpu_hash_nonce(const int thr_id, const uint32_t threads, const uint32_t startNonce, const uint64_t highTarget)
{
uint32_t result = UINT32_MAX;
const uint32_t real_threads = threads / NPR;
dim3 grid((threads + TPB-1)/TPB);
dim3 grid((real_threads + TPB-1)/TPB);
dim3 block(TPB);
/* Check error on Ctrl+C or kill to prevent segfaults on exit */
if (cudaMemset(d_resNonce[thr_id], 0xff, NBN*sizeof(uint32_t)) != cudaSuccess)
return result;
blake256_gpu_hash_nonce <<<grid, block>>> (threads, startNonce, d_resNonce[thr_id], highTarget);
blake256_gpu_hash_nonce <<<grid, block>>> (real_threads, startNonce, d_resNonce[thr_id], highTarget);
cudaThreadSynchronize();
if (cudaSuccess == cudaMemcpy(h_resNonce[thr_id], d_resNonce[thr_id], NBN*sizeof(uint32_t), cudaMemcpyDeviceToHost)) {
@ -294,6 +311,7 @@ static uint32_t decred_cpu_hash_nonce(const int thr_id, const uint32_t threads, @@ -294,6 +311,7 @@ static uint32_t decred_cpu_hash_nonce(const int thr_id, const uint32_t threads,
return result;
}
__host__
static void decred_midstate_128(uint32_t *output, const uint32_t *input)
{
@ -307,6 +325,7 @@ static void decred_midstate_128(uint32_t *output, const uint32_t *input) @@ -307,6 +325,7 @@ static void decred_midstate_128(uint32_t *output, const uint32_t *input)
memcpy(output, (void*)ctx.H, 32);
}
__host__
void decred_cpu_setBlock_52(uint32_t *penddata, const uint32_t *midstate, const uint32_t *ptarget)
{
@ -321,6 +340,7 @@ void decred_cpu_setBlock_52(uint32_t *penddata, const uint32_t *midstate, const @@ -321,6 +340,7 @@ void decred_cpu_setBlock_52(uint32_t *penddata, const uint32_t *midstate, const
CUDA_SAFE_CALL(cudaMemcpyToSymbol(d_data, data, 32 + 64, 0, cudaMemcpyHostToDevice));
}
/* ############################################################################################################################### */
static bool init[MAX_GPUS] = { 0 };
@ -425,6 +445,7 @@ extern "C" int scanhash_decred(int thr_id, struct work* work, uint32_t max_nonce @@ -425,6 +445,7 @@ extern "C" int scanhash_decred(int thr_id, struct work* work, uint32_t max_nonce
return rc;
}
// cleanup
extern "C" void free_decred(int thr_id)
{
@ -440,4 +461,3 @@ extern "C" void free_decred(int thr_id) @@ -440,4 +461,3 @@ extern "C" void free_decred(int thr_id)
cudaDeviceSynchronize();
}

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