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373 lines
9.9 KiB
373 lines
9.9 KiB
/** |
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* Blake-256 Cuda Kernel (Tested on SM 5.0) |
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* |
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* Tanguy Pruvot - Aug. 2014 |
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*/ |
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#include "miner.h" |
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extern "C" { |
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#include "sph/sph_blake.h" |
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#include <stdint.h> |
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#include <memory.h> |
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} |
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/* threads per block */ |
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#define TPB 128 |
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/* crc32.c */ |
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extern "C" uint32_t crc32_u32t(const uint32_t *buf, size_t size); |
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extern "C" int blake256_rounds = 14; |
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/* hash by cpu with blake 256 */ |
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extern "C" void blake256hash(void *output, const void *input, int8_t rounds = 14) |
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{ |
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unsigned char hash[64]; |
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sph_blake256_context ctx; |
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/* in sph_blake.c */ |
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blake256_rounds = rounds; |
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sph_blake256_init(&ctx); |
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sph_blake256(&ctx, input, 80); |
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sph_blake256_close(&ctx, hash); |
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memcpy(output, hash, 32); |
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} |
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#include "cuda_helper.h" |
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#define MAXU 0xffffffffU |
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// in cpu-miner.c |
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extern bool opt_n_threads; |
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extern bool opt_benchmark; |
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extern int device_map[8]; |
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__constant__ |
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static uint32_t __align__(32) c_data[20]; |
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/* 8 adapters max (-t threads) */ |
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static uint32_t *d_resNonce[8]; |
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static uint32_t *h_resNonce[8]; |
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/* max count of found nounces in one call */ |
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#define NBN 2 |
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static uint32_t extra_results[NBN-1] = { MAXU }; |
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#define USE_CACHE 1 |
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/* midstate hash cache, this algo is run on 2 parts */ |
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#if USE_CACHE |
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__device__ static uint32_t cache[8]; |
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__device__ static uint32_t prevsum = 0; |
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#endif |
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/* prefer uint32_t to prevent size conversions = speed +5/10 % */ |
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__constant__ |
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static uint32_t __align__(32) c_sigma[16][16]; |
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const uint32_t host_sigma[16][16] = { |
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
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{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }, |
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{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 }, |
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{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 }, |
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{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 }, |
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{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 }, |
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{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 }, |
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{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 }, |
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{ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 }, |
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{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 }, |
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }, |
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{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }, |
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{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 }, |
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{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 }, |
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{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 }, |
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{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } |
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}; |
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__device__ __constant__ |
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static const uint32_t __align__(32) c_IV256[8] = { |
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SPH_C32(0x6A09E667), SPH_C32(0xBB67AE85), |
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SPH_C32(0x3C6EF372), SPH_C32(0xA54FF53A), |
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SPH_C32(0x510E527F), SPH_C32(0x9B05688C), |
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SPH_C32(0x1F83D9AB), SPH_C32(0x5BE0CD19) |
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}; |
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__device__ __constant__ |
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static const uint32_t __align__(32) c_u256[16] = { |
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SPH_C32(0x243F6A88), SPH_C32(0x85A308D3), |
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SPH_C32(0x13198A2E), SPH_C32(0x03707344), |
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SPH_C32(0xA4093822), SPH_C32(0x299F31D0), |
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SPH_C32(0x082EFA98), SPH_C32(0xEC4E6C89), |
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SPH_C32(0x452821E6), SPH_C32(0x38D01377), |
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SPH_C32(0xBE5466CF), SPH_C32(0x34E90C6C), |
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SPH_C32(0xC0AC29B7), SPH_C32(0xC97C50DD), |
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SPH_C32(0x3F84D5B5), SPH_C32(0xB5470917) |
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}; |
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#define GS(a,b,c,d,x) { \ |
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const uint32_t idx1 = c_sigma[i][x]; \ |
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const uint32_t idx2 = c_sigma[i][x+1]; \ |
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v[a] += (m[idx1] ^ c_u256[idx2]) + v[b]; \ |
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v[d] = SPH_ROTL32(v[d] ^ v[a], 16); \ |
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v[c] += v[d]; \ |
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v[b] = SPH_ROTR32(v[b] ^ v[c], 12); \ |
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\ |
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v[a] += (m[idx2] ^ c_u256[idx1]) + v[b]; \ |
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v[d] = SPH_ROTR32(v[d] ^ v[a], 8); \ |
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v[c] += v[d]; \ |
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v[b] = SPH_ROTR32(v[b] ^ v[c], 7); \ |
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} |
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/* Second part (64-80) msg never change, store it */ |
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__device__ __constant__ |
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static const uint32_t __align__(32) c_Padding[16] = { |
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0, 0, 0, 0, |
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0x80000000UL, 0, 0, 0, |
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0, 0, 0, 0, |
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0, 1, 0, 640, |
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}; |
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__device__ static |
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void blake256_compress(uint32_t *h, const uint32_t *block, const uint32_t T0, const int rounds) |
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{ |
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uint32_t /* __align__(8) */ m[16]; |
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uint32_t /* __align__(8) */ v[16]; |
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m[0] = block[0]; |
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m[1] = block[1]; |
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m[2] = block[2]; |
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m[3] = block[3]; |
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for (uint32_t i = 4; i < 16; i++) { |
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m[i] = (T0 == 0x200) ? block[i] : c_Padding[i]; |
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} |
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//#pragma unroll 8 |
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for(uint32_t i = 0; i < 8; i++) |
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v[i] = h[i]; |
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v[ 8] = c_u256[0]; |
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v[ 9] = c_u256[1]; |
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v[10] = c_u256[2]; |
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v[11] = c_u256[3]; |
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v[12] = c_u256[4] ^ T0; |
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v[13] = c_u256[5] ^ T0; |
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v[14] = c_u256[6]; |
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v[15] = c_u256[7]; |
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for (int i = 0; i < rounds; i++) { |
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/* column step */ |
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GS(0, 4, 0x8, 0xC, 0x0); |
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GS(1, 5, 0x9, 0xD, 0x2); |
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GS(2, 6, 0xA, 0xE, 0x4); |
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GS(3, 7, 0xB, 0xF, 0x6); |
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/* diagonal step */ |
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GS(0, 5, 0xA, 0xF, 0x8); |
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GS(1, 6, 0xB, 0xC, 0xA); |
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GS(2, 7, 0x8, 0xD, 0xC); |
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GS(3, 4, 0x9, 0xE, 0xE); |
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} |
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//#pragma unroll 16 |
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for (uint32_t i = 0; i < 16; i++) { |
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uint32_t j = i % 8U; |
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h[j] ^= v[i]; |
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} |
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} |
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__global__ |
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void blake256_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32_t *resNounce, |
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const uint64_t highTarget, const int crcsum, const int rounds) |
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{ |
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uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x); |
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if (thread < threads) |
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{ |
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const uint32_t nounce = startNonce + thread; |
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uint32_t h[8]; |
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#pragma unroll |
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for(int i=0; i<8; i++) { |
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h[i] = c_IV256[i]; |
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} |
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#if !USE_CACHE |
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blake256_compress(h, c_data, 512); |
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#else |
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if (crcsum != prevsum) { |
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prevsum = crcsum; |
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blake256_compress(h, c_data, 512, rounds); |
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#pragma unroll |
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for(int i=0; i<8; i++) { |
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cache[i] = h[i]; |
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} |
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} else { |
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#pragma unroll |
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for(int i=0; i<8; i++) { |
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h[i] = cache[i]; |
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} |
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} |
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#endif |
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// ------ Close: Bytes 64 to 80 ------ |
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uint32_t ending[4]; |
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ending[0] = c_data[16]; |
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ending[1] = c_data[17]; |
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ending[2] = c_data[18]; |
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ending[3] = nounce; /* our tested value */ |
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blake256_compress(h, ending, 640, rounds); |
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// not sure why, h[7] is ok |
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h[6] = cuda_swab32(h[6]); |
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// compare count of leading zeros h[6] + h[7] |
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uint64_t high64 = ((uint64_t*)h)[3]; |
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if (high64 <= highTarget) |
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#if NBN == 2 |
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/* keep the smallest nounce, + extra one if found */ |
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if (resNounce[0] > nounce) { |
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// printf("%llx %llx \n", high64, highTarget); |
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resNounce[1] = resNounce[0]; |
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resNounce[0] = nounce; |
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} |
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else |
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resNounce[1] = nounce; |
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#else |
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resNounce[0] = nounce; |
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#endif |
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} |
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} |
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__host__ |
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uint32_t blake256_cpu_hash_80(const int thr_id, const uint32_t threads, const uint32_t startNonce, const uint64_t highTarget, |
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const uint32_t crcsum, const int8_t rounds) |
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{ |
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const int threadsperblock = TPB; |
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uint32_t result = MAXU; |
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dim3 grid((threads + threadsperblock-1)/threadsperblock); |
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dim3 block(threadsperblock); |
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size_t shared_size = 0; |
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/* Check error on Ctrl+C or kill to prevent segfaults on exit */ |
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if (cudaMemset(d_resNonce[thr_id], 0xff, NBN*sizeof(uint32_t)) != cudaSuccess) |
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return result; |
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blake256_gpu_hash_80<<<grid, block, shared_size>>>(threads, startNonce, d_resNonce[thr_id], highTarget, crcsum, (int) rounds); |
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cudaDeviceSynchronize(); |
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if (cudaSuccess == cudaMemcpy(h_resNonce[thr_id], d_resNonce[thr_id], NBN*sizeof(uint32_t), cudaMemcpyDeviceToHost)) { |
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//cudaThreadSynchronize(); /* seems no more required */ |
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result = h_resNonce[thr_id][0]; |
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for (int n=0; n < (NBN-1); n++) |
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extra_results[n] = h_resNonce[thr_id][n+1]; |
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} |
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return result; |
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} |
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__host__ |
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void blake256_cpu_setBlock_80(uint32_t *pdata, const uint32_t *ptarget) |
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{ |
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uint32_t data[20]; |
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memcpy(data, pdata, 80); |
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CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_data, data, sizeof(data), 0, cudaMemcpyHostToDevice)); |
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CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_sigma, host_sigma, sizeof(host_sigma), 0, cudaMemcpyHostToDevice)); |
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} |
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extern "C" int scanhash_blake256(int thr_id, uint32_t *pdata, const uint32_t *ptarget, |
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uint32_t max_nonce, unsigned long *hashes_done, int8_t blakerounds=14) |
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{ |
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const uint32_t first_nonce = pdata[19]; |
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static bool init[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
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uint32_t throughput = min(TPB * 4096, max_nonce - first_nonce); |
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uint64_t targetHigh = ((uint64_t*)ptarget)[3]; |
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uint32_t crcsum = MAXU; |
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int rc = 0; |
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#if NBN > 1 |
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if (extra_results[0] != MAXU) { |
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// possible extra result found in previous call |
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if (first_nonce <= extra_results[0] && max_nonce >= extra_results[0]) { |
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pdata[19] = extra_results[0]; |
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*hashes_done = pdata[19] - first_nonce + 1; |
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extra_results[0] = MAXU; |
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rc = 1; |
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goto exit_scan; |
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} |
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} |
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#endif |
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if (opt_benchmark) |
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((uint32_t*)ptarget)[7] = 0x00000f; |
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if (!init[thr_id]) { |
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if (opt_n_threads > 1) { |
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CUDA_SAFE_CALL(cudaSetDevice(device_map[thr_id])); |
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} |
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CUDA_SAFE_CALL(cudaMallocHost(&h_resNonce[thr_id], NBN * sizeof(uint32_t))); |
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CUDA_SAFE_CALL(cudaMalloc(&d_resNonce[thr_id], NBN * sizeof(uint32_t))); |
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init[thr_id] = true; |
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} |
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blake256_cpu_setBlock_80(pdata, ptarget); |
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#if USE_CACHE |
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crcsum = crc32_u32t(pdata, 64); |
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#endif |
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do { |
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// GPU HASH |
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uint32_t foundNonce = blake256_cpu_hash_80(thr_id, throughput, pdata[19], targetHigh, crcsum, blakerounds); |
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if (foundNonce != MAXU) |
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{ |
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uint32_t endiandata[20]; |
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uint32_t vhashcpu[8]; |
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uint32_t Htarg = ptarget[6]; |
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for (int k=0; k < 19; k++) |
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be32enc(&endiandata[k], pdata[k]); |
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be32enc(&endiandata[19], foundNonce); |
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blake256hash(vhashcpu, endiandata, blakerounds); |
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if (vhashcpu[6] <= Htarg || cuda_swab32(vhashcpu[6]) <= Htarg /*&& fulltest(vhashcpu, ptarget)*/) |
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{ |
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pdata[19] = foundNonce; |
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rc = 1; |
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if (extra_results[0] != MAXU) { |
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// Rare but possible if the throughput is big |
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be32enc(&endiandata[19], extra_results[0]); |
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blake256hash(vhashcpu, endiandata, blakerounds); |
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if (vhashcpu[6] <= Htarg /* && fulltest(vhashcpu, ptarget) */) { |
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applog(LOG_NOTICE, "GPU found more than one result " CL_GRN "yippee!"); |
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rc = 2; |
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} else { |
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extra_results[0] = MAXU; |
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} |
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} |
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//applog_hash((uint8_t*)ptarget); |
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//applog_compare_hash((uint8_t*)vhashcpu,(uint8_t*)ptarget); |
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goto exit_scan; |
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} |
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else if (opt_debug) { |
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applog_hash((uint8_t*)ptarget); |
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applog_compare_hash((uint8_t*)vhashcpu,(uint8_t*)ptarget); |
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applog(LOG_DEBUG, "GPU #%d: result for nounce %08x does not validate on CPU!", thr_id, foundNonce); |
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} |
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} |
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if ((uint64_t) pdata[19] + throughput > (uint64_t) max_nonce) { |
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pdata[19] = max_nonce; |
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break; |
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} |
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pdata[19] += throughput; |
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} while (!work_restart[thr_id].restart); |
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exit_scan: |
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*hashes_done = pdata[19] - first_nonce + 1; |
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return rc; |
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}
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