int scanhash_skein2(int thr_id, struct work *work,
uint32_t max_nonce, uint64_t *hashes_done)
{
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
uint32_t _ALIGN(64) hash64[8];
uint32_t _ALIGN(64) endiandata[20];
const uint32_t Htarg = ptarget[7];
const uint32_t first_nonce = pdata[19];
uint32_t n = first_nonce;
swab32_array( endiandata, pdata, 20 );
do {
be32enc(&endiandata[19], n);
skein2hash(hash64, endiandata);
if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return true;
}
n++;
} while (n < max_nonce && !work_restart[thr_id].restart);
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return 0;
}
int scanhash_skein2(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, uint64_t *hashes_done)
{
uint32_t _ALIGN(64) hash64[8];
uint32_t _ALIGN(64) endiandata[20];
const uint32_t Htarg = ptarget[7];
const uint32_t first_nonce = pdata[19];
uint32_t n = first_nonce;
for (int i=0; i < 19; i++) {
be32enc(&endiandata[i], pdata[i]);
};
do {
be32enc(&endiandata[19], n);
skein2hash(hash64, endiandata);
if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return true;
}
n++;
} while (n < max_nonce && !work_restart[thr_id].restart);
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return 0;
}
int scanhash_skein2(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
{
int dev_id = device_map[thr_id];
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
const uint32_t first_nonce = pdata[19];
const int swap = 1; // to toggle nonce endian
uint32_t throughput = cuda_default_throughput(thr_id, 1U << 19); // 256*256*8
if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0;
if (!init[thr_id])
{
cudaSetDevice(dev_id);
if (opt_cudaschedule == -1 && gpu_threads == 1) {
cudaDeviceReset();
// reduce cpu usage
cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync);
CUDA_LOG_ERROR();
}
cudaMalloc(&d_hash[thr_id], (size_t) 64 * throughput);
quark_skein512_cpu_init(thr_id, throughput);
cuda_check_cpu_init(thr_id, throughput);
CUDA_SAFE_CALL(cudaDeviceSynchronize());
init[thr_id] = true;
}
uint32_t endiandata[20];
for (int k=0; k < 19; k++)
be32enc(&endiandata[k], pdata[k]);
skein512_cpu_setBlock_80((void*)endiandata);
cuda_check_cpu_setTarget(ptarget);
do {
int order = 0;
// Hash with CUDA
skein512_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id], swap);
quark_skein512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
*hashes_done = pdata[19] - first_nonce + throughput;
uint32_t foundNonce = cuda_check_hash(thr_id, throughput, pdata[19], d_hash[thr_id]);
if (foundNonce != UINT32_MAX)
{
uint32_t _ALIGN(64) vhash64[8];
endiandata[19] = swab32_if(foundNonce, swap);
skein2hash(vhash64, endiandata);
if (vhash64[7] <= ptarget[7] && fulltest(vhash64, ptarget)) {
int res = 1;
uint32_t secNonce = cuda_check_hash_suppl(thr_id, throughput, pdata[19], d_hash[thr_id], 1);
work_set_target_ratio(work, vhash64);
if (secNonce != 0) {
if (!opt_quiet)
applog(LOG_BLUE, "GPU #%d: found second nonce %08x !", dev_id, swab32(secNonce));
endiandata[19] = swab32_if(secNonce, swap);
skein2hash(vhash64, endiandata);
if (bn_hash_target_ratio(vhash64, ptarget) > work->shareratio)
work_set_target_ratio(work, vhash64);
pdata[21] = swab32_if(secNonce, !swap);
res++;
}
pdata[19] = swab32_if(foundNonce, !swap);
return res;
} else {
gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU!", foundNonce);
}
}
if ((uint64_t) throughput + pdata[19] >= max_nonce) {
pdata[19] = max_nonce;
break;
}
pdata[19] += throughput;
} while (!work_restart[thr_id].restart);
*hashes_done = pdata[19] - first_nonce;
return 0;
}
