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prepare first block outside of warp

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orignal 2017-05-03 14:43:24 -04:00
parent 454f26c29d
commit d1bf7951c1
1 changed files with 22 additions and 19 deletions
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41
gost/cuda_gosthash.cu
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@ -15,7 +15,9 @@
typedef unsigned char uchar;
static uint32_t* d_resNonces[MAX_GPUS] = { 0 };
__constant__ static uint32_t __align__(8) c_header[19];
__constant__ static uint64_t __align__(8) c_header1[10], c_header2[8]; // two blocks
// c_header1 +2 is leading zero,1 and first 16 bytes of header for first hash
// c_headse1 is leading zero and 1 for second hash
__device__ uint64_t d_target[1];
//#define FULL_UNROLL
@ -840,20 +842,20 @@ void GOST_g_0(uint64_t* h, uint64_t* const M)
}
__device__ __forceinline__
void GOST_hash_X(uint64_t *hash, uint64_t * const message, uint32_t len) // always 2 blocks of 64 bytes, len is length of first block in bits (either 0 or 128)
void GOST_hash_X(uint64_t *hash, uint64_t * const block1, uint64_t * const block2, uint32_t len) // always 2 blocks of 64 bytes, len is length of first block in bits (either 0 or 128)
{
uint64_t N[8] = { 0 };
// second block
GOST_g_0(hash, message + 8);
GOST_g_0(hash, block2);
N[7] = 0x0002000000000000; // 512
// first block
GOST_g_N(hash, message, N);
GOST_g_N(hash, block1, N);
((uint8_t *)N)[63] = len; // +=128 or 0
GOST_g_0(hash, N);
GOST_Add512(N, message + 8, message); // Sigma
GOST_Add512(N, block2, block1); // Sigma
GOST_g_0(hash, N);
}
@ -866,24 +868,19 @@ void gostd_gpu_hash_80(const uint32_t threads, const uint32_t startNonce, uint32
{
const uint32_t nonce = startNonce + thread;
// first hash (GOST 34.11-512 over 80 bytes)
uint32_t __align__(8) dat[32];
// fill first 48 bytes and leading 1
#pragma unroll
for (int i = 0; i < 11; i++) dat[i] = 0;
dat[11] = 0x01000000;
// copy actual header
uint64_t __align__(8) dat2[8];
// copy second block of header
#pragma unroll
for (int i = 0; i < 19; i++) dat[i + 12] = c_header[i];
dat[19 + 12] = cuda_swab32 (nonce);
uint64_t hash1[16] = { 0 }; // iv for 512
hash1[7] = 0x0100000000000000; // set leading 1
GOST_hash_X(hash1 + 8, (uint64_t *)dat, 128);
for (int i = 0; i < 8; i++) dat2[i] = c_header2[i];
((uint32_t *)dat2)[15] = cuda_swab32 (nonce); // change nonce
uint64_t hash1[8] = { 0 }; // iv for 512
GOST_hash_X(hash1, c_header1 + 2, dat2, 128);
// second hash (GOST 34.11-256 over 64 bytes)
uint64_t hash[8];
#pragma unroll
for (int i=0; i< 8; i++) hash[i] = 0x0101010101010101; // iv for 256
GOST_hash_X(hash, hash1, 0);
GOST_hash_X(hash, c_header1, hash1, 0);
// result is first 32 bytes of hash
uint64_t high = MAKE_ULONGLONG(cuda_swab32(_HIDWORD(hash[0])), cuda_swab32(_LODWORD(hash[0]))); // swab uint64_t and invert
@ -914,7 +911,13 @@ void gostd_free(int thr_id)
__host__
void gostd_setBlock_80(uint32_t *pdata, uint32_t *ptarget)
{
CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_header, pdata, 76, 0, cudaMemcpyHostToDevice));
// fill first 48 bytes, leading 1 and first 16 bytes for header
uint8_t dat1[80] = {0};
dat1[63] = 1;
memcpy (dat1 + 64, pdata, 16);
CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_header1, dat1, 80, 0, cudaMemcpyHostToDevice));
// other 64 bytes, but since we set nonce later on we don't copy it
CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_header2, pdata + 4, 60, 0, cudaMemcpyHostToDevice));
CUDA_SAFE_CALL(cudaMemcpyToSymbol(d_target, &ptarget[6], 8, 0, cudaMemcpyHostToDevice));
}