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90 lines
2.8 KiB
90 lines
2.8 KiB
7 years ago
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#include <stdio.h>
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#include <memory.h>
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#include "cuda_helper.h"
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__global__ __launch_bounds__(128, 8)
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void phi_filter_gpu(const uint32_t threads, const uint32_t* d_hash, uint32_t* d_branch2, uint32_t* d_NonceBranch)
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{
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const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
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if (thread < threads)
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{
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const uint32_t offset = thread * 16U; // 64U / sizeof(uint32_t);
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uint4 *psrc = (uint4*) (&d_hash[offset]);
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d_NonceBranch[thread] = ((uint8_t*)psrc)[0] & 1;
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if (d_NonceBranch[thread]) return;
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if (d_branch2) {
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uint4 *pdst = (uint4*)(&d_branch2[offset]);
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uint4 data;
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data = psrc[0]; pdst[0] = data;
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data = psrc[1]; pdst[1] = data;
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data = psrc[2]; pdst[2] = data;
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data = psrc[3]; pdst[3] = data;
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}
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}
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}
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__global__ __launch_bounds__(128, 8)
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void phi_merge_gpu(const uint32_t threads, uint32_t* d_hash, uint32_t* d_branch2, uint32_t* const d_NonceBranch)
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{
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const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
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if (thread < threads && !d_NonceBranch[thread])
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{
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const uint32_t offset = thread * 16U;
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uint4 *psrc = (uint4*) (&d_branch2[offset]);
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uint4 *pdst = (uint4*) (&d_hash[offset]);
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uint4 data;
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data = psrc[0]; pdst[0] = data;
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data = psrc[1]; pdst[1] = data;
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data = psrc[2]; pdst[2] = data;
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data = psrc[3]; pdst[3] = data;
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}
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}
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__global__
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void phi_final_compress_gpu(const uint32_t threads, uint32_t* d_hash)
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{
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const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
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if (thread < threads)
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{
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const uint32_t offset = thread * 16U;
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uint2 *psrc = (uint2*) (&d_hash[offset]);
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uint2 *pdst = (uint2*) (&d_hash[offset]);
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uint2 data;
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data = psrc[4]; pdst[0] ^= data;
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data = psrc[5]; pdst[1] ^= data;
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data = psrc[6]; pdst[2] ^= data;
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data = psrc[7]; pdst[3] ^= data;
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}
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}
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__host__
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uint32_t phi_filter_cuda(const int thr_id, const uint32_t threads, const uint32_t *inpHashes, uint32_t* d_br2, uint32_t* d_nonces)
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{
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const uint32_t threadsperblock = 128;
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dim3 grid((threads + threadsperblock - 1) / threadsperblock);
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dim3 block(threadsperblock);
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// extract algo permution hashes to a second branch buffer
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phi_filter_gpu <<<grid, block>>> (threads, inpHashes, d_br2, d_nonces);
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return threads;
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}
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__host__
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void phi_merge_cuda(const int thr_id, const uint32_t threads, uint32_t *outpHashes, uint32_t* d_br2, uint32_t* d_nonces)
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{
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const uint32_t threadsperblock = 128;
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dim3 grid((threads + threadsperblock - 1) / threadsperblock);
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dim3 block(threadsperblock);
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// put back second branch hashes to the common buffer d_hash
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phi_merge_gpu <<<grid, block>>> (threads, outpHashes, d_br2, d_nonces);
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}
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__host__
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void phi_final_compress_cuda(const int thr_id, const uint32_t threads, uint32_t *d_hashes)
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{
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const uint32_t threadsperblock = 128;
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dim3 grid((threads + threadsperblock - 1) / threadsperblock);
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dim3 block(threadsperblock);
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phi_final_compress_gpu <<<grid, block>>> (threads, d_hashes);
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}
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