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pentablake.cu
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pentablake.cu
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/**
* Penta Blake
*/
#include <stdint.h>
#include <memory.h>
#include "miner.h"
extern "C" {
#include "sph/sph_blake.h"
}
/* hash by cpu with blake 256 */
extern "C" void pentablakehash(void *output, const void *input)
{
unsigned char _ALIGN(128) hash[64];
sph_blake512_context ctx;
sph_blake512_init(&ctx);
sph_blake512(&ctx, input, 80);
sph_blake512_close(&ctx, hash);
sph_blake512(&ctx, hash, 64);
sph_blake512_close(&ctx, hash);
sph_blake512(&ctx, hash, 64);
sph_blake512_close(&ctx, hash);
sph_blake512(&ctx, hash, 64);
sph_blake512_close(&ctx, hash);
sph_blake512(&ctx, hash, 64);
sph_blake512_close(&ctx, hash);
memcpy(output, hash, 32);
}
#include "cuda_helper.h"
static uint32_t *d_hash[MAX_GPUS];
extern void quark_blake512_cpu_init(int thr_id, uint32_t threads);
extern void quark_blake512_cpu_free(int thr_id);
extern void quark_blake512_cpu_setBlock_80(int thr_id, uint32_t *pdata);
extern void quark_blake512_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_hash);
extern void quark_blake512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);
static bool init[MAX_GPUS] = { 0 };
extern "C" int scanhash_pentablake(int thr_id, struct work *work, uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t _ALIGN(64) endiandata[20];
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
const uint32_t first_nonce = pdata[19];
int rc = 0;
uint32_t throughput = cuda_default_throughput(thr_id, 1U << 19);
if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);
if (opt_benchmark)
ptarget[7] = 0x000F;
if (!init[thr_id]) {
cudaSetDevice(device_map[thr_id]);
if (opt_cudaschedule == -1 && gpu_threads == 1) {
cudaDeviceReset();
// reduce cpu usage
cudaSetDeviceFlags(cudaDeviceScheduleBlockingSync);
CUDA_LOG_ERROR();
}
CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], (size_t) 64 * throughput));
quark_blake512_cpu_init(thr_id, throughput);
cuda_check_cpu_init(thr_id, throughput);
CUDA_LOG_ERROR();
init[thr_id] = true;
}
for (int k=0; k < 20; k++)
be32enc(&endiandata[k], pdata[k]);
quark_blake512_cpu_setBlock_80(thr_id, endiandata);
cuda_check_cpu_setTarget(ptarget);
do {
int order = 0;
// GPU HASH
quark_blake512_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id]); order++;
quark_blake512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
quark_blake512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
quark_blake512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);
quark_blake512_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 vhash[8];
be32enc(&endiandata[19], foundNonce);
pentablakehash(vhash, endiandata);
if (vhash[7] <= ptarget[7] && fulltest(vhash, ptarget)) {
rc = 1;
work_set_target_ratio(work, vhash);
pdata[19] = foundNonce;
return rc;
} 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);
return rc;
}
// cleanup
void free_pentablake(int thr_id)
{
if (!init[thr_id])
return;
cudaThreadSynchronize();
cudaFree(d_hash[thr_id]);
quark_blake512_cpu_free(thr_id);
cuda_check_cpu_free(thr_id);
cudaDeviceSynchronize();
init[thr_id] = false;
}