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/**
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* SKEIN512 80 + SKEIN512 64 (Woodcoin)
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* by tpruvot@github - 2015
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*/
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#include <string.h>
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#include "sph/sph_skein.h"
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#include "miner.h"
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#include "cuda_helper.h"
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static uint32_t *d_hash[MAX_GPUS];
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extern void skein512_cpu_setBlock_80(void *pdata);
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extern void skein512_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_hash, int swap);
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extern void quark_skein512_cpu_init(int thr_id, uint32_t threads);
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extern void quark_skein512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);
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void skein2hash(void *output, const void *input)
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{
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uint32_t _ALIGN(64) hash[16];
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sph_skein512_context ctx_skein;
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sph_skein512_init(&ctx_skein);
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sph_skein512(&ctx_skein, input, 80);
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sph_skein512_close(&ctx_skein, hash);
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sph_skein512_init(&ctx_skein);
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sph_skein512(&ctx_skein, hash, 64);
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sph_skein512_close(&ctx_skein, hash);
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memcpy(output, (void*) hash, 32);
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}
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static bool init[MAX_GPUS] = { 0 };
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int scanhash_skein2(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
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{
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int dev_id = device_map[thr_id];
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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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uint32_t throughput = cuda_default_throughput(thr_id, 1U << 19); // 256*256*8
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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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((uint32_t*)ptarget)[7] = 0;
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if (!init[thr_id])
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{
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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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CUDA_LOG_ERROR();
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}
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gpulog(LOG_INFO, thr_id, "Intensity set to %g, %u cuda threads", throughput2intensity(throughput), throughput);
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cudaMalloc(&d_hash[thr_id], (size_t) 64 * throughput);
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quark_skein512_cpu_init(thr_id, throughput);
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cuda_check_cpu_init(thr_id, throughput);
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CUDA_SAFE_CALL(cudaDeviceSynchronize());
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init[thr_id] = true;
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}
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uint32_t endiandata[20];
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for (int k=0; k < 19; k++)
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be32enc(&endiandata[k], pdata[k]);
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skein512_cpu_setBlock_80((void*)endiandata);
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cuda_check_cpu_setTarget(ptarget);
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do {
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int order = 0;
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// Hash with CUDA
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skein512_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id], 1);
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quark_skein512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
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*hashes_done = pdata[19] - first_nonce + throughput;
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work->nonces[0] = cuda_check_hash(thr_id, throughput, pdata[19], d_hash[thr_id]);
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if (work->nonces[0] != UINT32_MAX)
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{
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uint32_t _ALIGN(64) vhash[8];
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endiandata[19] = swab32(work->nonces[0]);
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skein2hash(vhash, endiandata);
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if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) {
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work->valid_nonces = 1;
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work->nonces[1] = cuda_check_hash_suppl(thr_id, throughput, pdata[19], d_hash[thr_id], 1);
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work_set_target_ratio(work, vhash);
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if (work->nonces[1] != 0) {
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endiandata[19] = swab32(work->nonces[1]);
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skein2hash(vhash, endiandata);
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work->valid_nonces++;
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bn_set_target_ratio(work, vhash, 1);
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gpulog(LOG_DEBUG, thr_id, "found second nonce %08x!", endiandata[19]);
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pdata[19] = max(work->nonces[0], work->nonces[1]) + 1;
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} else {
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pdata[19] = work->nonces[0] + 1; // cursor for next scan
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}
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return work->valid_nonces;
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}
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else if (vhash[7] > ptarget[7]) {
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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, "result for %08x does not validate on CPU!", work->nonces[0]);
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pdata[19] = work->nonces[0] + 1;
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continue;
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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_skein2(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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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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