From 5ccd1669161e174211f916ffd2e17d2117fa6d1c Mon Sep 17 00:00:00 2001 From: Tanguy Pruvot Date: Sat, 6 Sep 2014 16:26:53 +0200 Subject: [PATCH] blake: introduce pdata head cache (speed x2) --- blake32.cu | 103 ++++++++++++++++++++++++++++++++++++++++++++++++---- cpu-miner.c | 10 ++--- util.c | 4 +- 3 files changed, 102 insertions(+), 15 deletions(-) diff --git a/blake32.cu b/blake32.cu index 5013de7..a0f502b 100644 --- a/blake32.cu +++ b/blake32.cu @@ -41,7 +41,7 @@ extern bool opt_n_threads; extern bool opt_benchmark; extern int device_map[8]; -extern cudaError_t MyStreamSynchronize(cudaStream_t stream, int situation, int thr_id); +uint32_t crc32(const uint32_t *buf, size_t size); __constant__ static uint32_t __align__(32) c_Target[8]; @@ -51,9 +51,16 @@ static uint32_t __align__(32) c_data[20]; static uint32_t *d_resNounce[8]; static uint32_t *h_resNounce[8]; - static uint32_t extra_results[2] = { MAXU, MAXU }; +#define USE_CACHE 1 +#if USE_CACHE +__device__ +static uint32_t cache[8]; +__device__ +static uint32_t prevsum = 0; +#endif + /* prefer uint32_t to prevent size conversions = speed +5/10 % */ __constant__ static uint32_t __align__(32) c_sigma[16][16]; @@ -193,7 +200,7 @@ void blake256_compress(uint32_t *h, const uint32_t *block, const uint32_t T0, in } __global__ -void blake256_gpu_hash_80(uint32_t threads, uint32_t startNounce, uint32_t *resNounce, const int blakerounds) +void blake256_gpu_hash_80(uint32_t threads, uint32_t startNounce, uint32_t *resNounce, const int blakerounds, const int crcsum) { uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x); if (thread < threads) @@ -202,11 +209,27 @@ void blake256_gpu_hash_80(uint32_t threads, uint32_t startNounce, uint32_t *resN uint32_t h[8]; #pragma unroll - for(int i=0; i<8; i++) + for(int i=0; i<8; i++) { h[i] = c_IV256[i]; + } +#if !USE_CACHE blake256_compress(h, c_data, 512, blakerounds); - +#else + if (crcsum != prevsum) { + prevsum = crcsum; + blake256_compress(h, c_data, 512, blakerounds); + #pragma unroll + for(int i=0; i<8; i++) { + cache[i] = h[i]; + } + } else { + #pragma unroll + for(int i=0; i<8; i++) { + h[i] = cache[i]; + } + } +#endif // ------ Close: Bytes 64 to 80 ------ uint32_t ending[4]; @@ -238,7 +261,7 @@ void blake256_gpu_hash_80(uint32_t threads, uint32_t startNounce, uint32_t *resN } __host__ -uint32_t blake256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, const int blakerounds) +uint32_t blake256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, const int blakerounds, const uint32_t crcsum) { const int threadsperblock = TPB; uint32_t result = MAXU; @@ -251,7 +274,7 @@ uint32_t blake256_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce if (cudaMemset(d_resNounce[thr_id], 0xff, 2*sizeof(uint32_t)) != cudaSuccess) return result; - blake256_gpu_hash_80<<>>(threads, startNounce, d_resNounce[thr_id], blakerounds); + blake256_gpu_hash_80<<>>(threads, startNounce, d_resNounce[thr_id], blakerounds, crcsum); cudaDeviceSynchronize(); if (cudaSuccess == cudaMemcpy(h_resNounce[thr_id], d_resNounce[thr_id], 2*sizeof(uint32_t), cudaMemcpyDeviceToHost)) { cudaThreadSynchronize(); @@ -277,6 +300,7 @@ extern "C" int scanhash_blake256(int thr_id, uint32_t *pdata, const uint32_t *pt const uint32_t first_nonce = pdata[19]; static bool init[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; uint32_t throughput = min(TPB * 4096, max_nonce - first_nonce); + uint32_t crcsum = MAXU; int rc = 0; if (extra_results[0] != MAXU) { @@ -306,10 +330,13 @@ extern "C" int scanhash_blake256(int thr_id, uint32_t *pdata, const uint32_t *pt applog(LOG_DEBUG, "throughput=%u, start=%x, max=%x", throughput, first_nonce, max_nonce); blake256_cpu_setBlock_80(pdata, ptarget); +#if USE_CACHE + crcsum = crc32(pdata, 64); +#endif do { // 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, crcsum); if (foundNonce != MAXU) { uint32_t endiandata[20]; @@ -370,3 +397,63 @@ exit_scan: cudaDeviceSynchronize(); return rc; } + +static uint32_t crc32_tab[] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, + 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, + 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, + 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, + 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, + 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, + 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, + 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, + 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, + 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, + 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, + 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, + 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, + 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, + 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, + 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, + 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, + 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, + 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, + 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, + 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, + 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d +}; + +uint32_t crc32(const uint32_t *buf, size_t size) +{ + const uint8_t *p; + uint32_t crc = 0; + + p = (uint8_t *) buf; + crc = crc ^ ~0U; + + while (size--) + crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); + + return crc ^ ~0U; +} \ No newline at end of file diff --git a/cpu-miner.c b/cpu-miner.c index 7f70a6e..6cf40d5 100644 --- a/cpu-miner.c +++ b/cpu-miner.c @@ -582,8 +582,8 @@ static bool get_upstream_work(CURL *curl, struct work *work) if (opt_debug && rc) { timeval_subtract(&diff, &tv_end, &tv_start); - applog(LOG_DEBUG, "DEBUG: got new work in %d ms", - diff.tv_sec * 1000 + diff.tv_usec / 1000); + applog(LOG_DEBUG, "DEBUG: got new work in %u µs", + diff.tv_sec * 1000000 + diff.tv_usec); } json_decref(val); @@ -1345,12 +1345,12 @@ static void *stratum_thread(void *userdata) pthread_mutex_unlock(&g_work_lock); if (stratum.job.clean) { if (!opt_quiet) - applog(LOG_BLUE, "%s requested %s job %d restart, block %d", short_url, algo_names[opt_algo], - strtoul(stratum.job.job_id, NULL, 16), stratum.bloc_height); + applog(LOG_BLUE, "%s send a new %s block %d", short_url, algo_names[opt_algo], + stratum.bloc_height); restart_threads(); hashlog_purge_old(); } else if (!opt_quiet) { - applog(LOG_BLUE, "%s send %s job %d, block %d", short_url, algo_names[opt_algo], + applog(LOG_BLUE, "%s send job %d for block %d", short_url, strtoul(stratum.job.job_id, NULL, 16), stratum.bloc_height); } } diff --git a/util.c b/util.c index b2c0b0f..dfe98ab 100644 --- a/util.c +++ b/util.c @@ -557,8 +557,8 @@ bool fulltest(const uint32_t *hash, const uint32_t *target) rc = true; break; } - if (hash[0] == target[0]) { - applog(LOG_NOTICE, "We found an exact match!"); + if (hash[1] == target[1]) { + applog(LOG_NOTICE, "We found a close match!"); } }