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121 lines
3.2 KiB
121 lines
3.2 KiB
#include <cuda_runtime.h> |
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#include <string.h> |
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#include <miner.h> |
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#include "neoscrypt.h" |
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extern void neoscrypt_setBlockTarget(uint32_t* const data, uint32_t* const ptarget); |
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extern void neoscrypt_init(int thr_id, uint32_t threads); |
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extern void neoscrypt_free(int thr_id); |
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extern void neoscrypt_hash_k4(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *resNonces, bool stratum); |
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static bool init[MAX_GPUS] = { 0 }; |
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int scanhash_neoscrypt(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(64) endiandata[20]; |
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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[19]; |
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int dev_id = device_map[thr_id]; |
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int intensity = is_windows() ? 18 : 19; |
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if (strstr(device_name[dev_id], "GTX 10")) intensity = 21; // >= 20 need more than 2GB |
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if (strstr(device_name[dev_id], "TITAN")) intensity = 21; |
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uint32_t throughput = cuda_default_throughput(thr_id, 1U << intensity); |
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throughput = throughput / 32; /* set for max intensity ~= 20 */ |
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api_set_throughput(thr_id, throughput); |
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if (opt_benchmark) |
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ptarget[7] = 0x00ff; |
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if (!init[thr_id]) |
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{ |
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cudaDeviceSynchronize(); |
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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 |
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cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync); |
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cudaGetLastError(); // reset errors if device is not "reset" |
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} |
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if (device_sm[dev_id] <= 300) { |
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gpulog(LOG_ERR, thr_id, "Sorry neoscrypt is not supported on SM 3.0 devices"); |
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proper_exit(EXIT_CODE_CUDA_ERROR); |
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} |
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gpulog(LOG_INFO, thr_id, "Intensity set to %g (+5), %u cuda threads", throughput2intensity(throughput), throughput); |
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neoscrypt_init(thr_id, throughput); |
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init[thr_id] = true; |
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} |
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if (have_stratum) { |
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for (int k = 0; k < 20; k++) |
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be32enc(&endiandata[k], pdata[k]); |
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} else { |
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for (int k = 0; k < 20; k++) |
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endiandata[k] = pdata[k]; |
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} |
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neoscrypt_setBlockTarget(endiandata,ptarget); |
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do { |
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memset(work->nonces, 0xff, sizeof(work->nonces)); |
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neoscrypt_hash_k4(thr_id, throughput, pdata[19], work->nonces, have_stratum); |
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*hashes_done = pdata[19] - first_nonce + throughput; |
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if (work->nonces[0] != UINT32_MAX) |
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{ |
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const uint32_t Htarg = ptarget[7]; |
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uint32_t _ALIGN(64) vhash[8]; |
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if (have_stratum) { |
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be32enc(&endiandata[19], work->nonces[0]); |
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} else { |
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endiandata[19] = work->nonces[0]; |
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} |
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neoscrypt((uchar*)vhash, (uchar*) endiandata, 0x80000620U); |
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if (vhash[7] <= Htarg && fulltest(vhash, ptarget)) { |
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work->valid_nonces = 1; |
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work_set_target_ratio(work, vhash); |
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pdata[19] = work->nonces[0] + 1; // cursor |
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return work->valid_nonces; |
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} |
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else if (vhash[7] > Htarg) { |
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gpu_increment_reject(thr_id); |
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if (!opt_quiet) |
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gpulog(LOG_WARNING, thr_id, "nonce %08x does not validate on CPU!", work->nonces[0]); |
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} |
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} |
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if ((uint64_t)throughput + pdata[19] >= 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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*hashes_done = pdata[19] - first_nonce; |
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return 0; |
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} |
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// cleanup |
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void free_neoscrypt(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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neoscrypt_free(thr_id); |
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init[thr_id] = false; |
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cudaDeviceSynchronize(); |
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}
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