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225 lines
6.8 KiB
225 lines
6.8 KiB
/** |
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* Lbry CUDA Implementation |
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* |
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* by tpruvot@github - July 2016 |
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* |
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*/ |
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#include <string.h> |
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#include <stdint.h> |
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extern "C" { |
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#include <sph/sph_sha2.h> |
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#include <sph/sph_ripemd.h> |
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} |
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#include <cuda_helper.h> |
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#include <miner.h> |
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#define A 64 |
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#define debug_cpu 0 |
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extern "C" void lbry_hash(void* output, const void* input) |
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{ |
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uint32_t _ALIGN(A) hashA[16]; |
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uint32_t _ALIGN(A) hashB[8]; |
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uint32_t _ALIGN(A) hashC[8]; |
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sph_sha256_context ctx_sha256; |
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sph_sha512_context ctx_sha512; |
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sph_ripemd160_context ctx_ripemd; |
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sph_sha256_init(&ctx_sha256); |
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sph_sha256(&ctx_sha256, input, 112); |
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sph_sha256_close(&ctx_sha256, hashA); |
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sph_sha256(&ctx_sha256, hashA, 32); |
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sph_sha256_close(&ctx_sha256, hashA); |
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sph_sha512_init(&ctx_sha512); |
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sph_sha512(&ctx_sha512, hashA, 32); |
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sph_sha512_close(&ctx_sha512, hashA); |
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sph_ripemd160_init(&ctx_ripemd); |
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sph_ripemd160(&ctx_ripemd, hashA, 32); // sha512 low |
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sph_ripemd160_close(&ctx_ripemd, hashB); |
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if (debug_cpu) applog_hex(hashB, 20); |
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sph_ripemd160(&ctx_ripemd, &hashA[8], 32); // sha512 high |
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sph_ripemd160_close(&ctx_ripemd, hashC); |
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if (debug_cpu) applog_hex(hashC, 20); |
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sph_sha256(&ctx_sha256, hashB, 20); |
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sph_sha256(&ctx_sha256, hashC, 20); |
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sph_sha256_close(&ctx_sha256, hashA); |
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if (debug_cpu) applog_hex(hashA,32); |
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sph_sha256(&ctx_sha256, hashA, 32); |
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sph_sha256_close(&ctx_sha256, hashA); |
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memcpy(output, hashA, 32); |
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} |
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/* ############################################################################################################################### */ |
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extern void lbry_ripemd160_init(int thr_id); |
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extern void lbry_sha256_init(int thr_id); |
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extern void lbry_sha256_free(int thr_id); |
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extern void lbry_sha256_setBlock_112(uint32_t *pdata, uint32_t *ptarget); |
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extern void lbry_sha256_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream); |
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extern void lbry_sha256d_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream); |
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extern void lbry_sha256_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStream_t stream); |
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extern void lbry_sha512_init(int thr_id); |
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extern void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStream_t stream); |
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extern void lbry_ripemd160_hash_32x2(int thr_id, uint32_t threads, uint32_t *g_Hash, cudaStream_t stream); |
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extern void lbry_sha256_hash_20x2(int thr_id, uint32_t threads, uint32_t *g_Hash, cudaStream_t stream); |
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extern void lbry_sha256d_hash_20x2(int thr_id, uint32_t threads, uint32_t *g_Hash, cudaStream_t stream); |
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extern void lbry_sha256d_hash_final(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_inputHash, uint32_t *resNonces, cudaStream_t stream); |
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static __inline uint32_t swab32_if(uint32_t val, bool iftrue) { |
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return iftrue ? swab32(val) : val; |
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} |
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static bool init[MAX_GPUS] = { 0 }; |
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static uint32_t *d_hash[MAX_GPUS]; |
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// nonce position is different |
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#define LBC_NONCE_OFT32 27 |
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extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce, unsigned long *hashes_done) |
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{ |
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uint32_t _ALIGN(A) vhash[8]; |
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uint32_t _ALIGN(A) endiandata[28]; |
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uint32_t *pdata = work->data; |
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uint32_t *ptarget = work->target; |
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const uint32_t first_nonce = pdata[LBC_NONCE_OFT32]; |
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const int swap = 0; // to toggle nonce endian |
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const int dev_id = device_map[thr_id]; |
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int intensity = (device_sm[dev_id] > 500 && !is_windows()) ? 22 : 20; |
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if (device_sm[dev_id] >= 600) intensity = 23; |
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if (device_sm[dev_id] < 350) intensity = 18; |
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uint32_t throughput = cuda_default_throughput(thr_id, 1U << intensity); |
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if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce); |
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if (opt_benchmark) { |
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ptarget[7] = 0xff; |
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} |
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if (!init[thr_id]){ |
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cudaSetDevice(dev_id); |
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if (opt_cudaschedule == -1 && gpu_threads == 1) { |
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cudaDeviceReset(); |
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// reduce cpu usage (linux) |
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cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync); |
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CUDA_LOG_ERROR(); |
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} |
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CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], (size_t) 64 * throughput)); |
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lbry_sha256_init(thr_id); |
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lbry_sha512_init(thr_id); |
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lbry_ripemd160_init(thr_id); |
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cuda_check_cpu_init(thr_id, throughput); |
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CUDA_LOG_ERROR(); |
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init[thr_id] = true; |
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} |
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for (int i=0; i < LBC_NONCE_OFT32; i++) { |
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be32enc(&endiandata[i], pdata[i]); |
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} |
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lbry_sha256_setBlock_112(endiandata, ptarget); |
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cuda_check_cpu_setTarget(ptarget); |
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do { |
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// Hash with CUDA |
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#if 0 |
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lbry_sha256_hash_112(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], swap, 0); |
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lbry_sha256_hash_32(thr_id, throughput, d_hash[thr_id], 0); |
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#else |
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lbry_sha256d_hash_112(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], swap, 0); |
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#endif |
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CUDA_LOG_ERROR(); |
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lbry_sha512_hash_32(thr_id, throughput, d_hash[thr_id], 0); |
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lbry_ripemd160_hash_32x2(thr_id, throughput, d_hash[thr_id], 0); |
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#if 0 |
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lbry_sha256d_hash_20x2(thr_id, throughput, d_hash[thr_id], 0); |
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uint32_t foundNonce = cuda_check_hash(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id]); |
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#else |
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uint32_t resNonces[2] = { UINT32_MAX, UINT32_MAX }; |
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lbry_sha256d_hash_final(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], resNonces, 0); |
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uint32_t foundNonce = resNonces[0]; |
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#endif |
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*hashes_done = pdata[LBC_NONCE_OFT32] - first_nonce + throughput; |
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if (foundNonce != UINT32_MAX) |
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{ |
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endiandata[LBC_NONCE_OFT32] = swab32_if(foundNonce, !swap); |
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lbry_hash(vhash, endiandata); |
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if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) { |
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int res = 1; |
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uint32_t secNonce = resNonces[1]; |
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//uint32_t secNonce = cuda_check_hash_suppl(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], 1); |
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work->nonces[0] = swab32_if(foundNonce, swap); |
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work_set_target_ratio(work, vhash); |
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if (secNonce != UINT32_MAX) { |
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//if (secNonce) { |
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if (opt_debug) |
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gpulog(LOG_BLUE, thr_id, "found second nonce %08x", swab32(secNonce)); |
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endiandata[LBC_NONCE_OFT32] = swab32_if(secNonce, !swap); |
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lbry_hash(vhash, endiandata); |
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if (bn_hash_target_ratio(vhash, ptarget) > work->shareratio) { |
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work_set_target_ratio(work, vhash); |
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xchg(work->nonces[0], work->nonces[1]); |
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} |
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work->nonces[1] = swab32_if(secNonce, swap); |
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res++; |
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} |
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pdata[LBC_NONCE_OFT32] = work->nonces[0]; |
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return res; |
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} else { |
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gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU %08x > %08x!", foundNonce, vhash[7], ptarget[7]); |
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} |
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} |
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if ((uint64_t) throughput + pdata[LBC_NONCE_OFT32] >= max_nonce) { |
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pdata[LBC_NONCE_OFT32] = max_nonce; |
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break; |
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} |
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pdata[LBC_NONCE_OFT32] += throughput; |
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} while (!work_restart[thr_id].restart); |
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//*hashes_done = pdata[LBC_NONCE_OFT32] - first_nonce; |
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return 0; |
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} |
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// cleanup |
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void free_lbry(int thr_id) |
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{ |
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if (!init[thr_id]) |
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return; |
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cudaThreadSynchronize(); |
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cudaFree(d_hash[thr_id]); |
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lbry_sha256_free(thr_id); |
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cuda_check_cpu_free(thr_id); |
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init[thr_id] = false; |
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cudaDeviceSynchronize(); |
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}
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