preview 3, with alexis78 touch

lbry/cuda_sha256_lbry.cu

@@ -1,24 +1,38 @@
 /*
- * sha256 CUDA implementation.
+ * sha256 + ripemd CUDA implementation.
+ * tpruvot and alexis78
  */
+
 #include <stdio.h>
 #include <stdint.h>
 #include <memory.h>
 
 #include <cuda_helper.h>
+#include <cuda_vector_uint2x4.h>
+
 #include <miner.h>
 
-__constant__ static uint32_t __align__(8) c_midstate112[8];
-__constant__ static uint32_t __align__(8) c_dataEnd112[12];
+__constant__ static uint32_t _ALIGN(8) c_midstate112[8];
+__constant__ static uint32_t _ALIGN(8) c_midbuffer112[8];
+__constant__ static uint32_t _ALIGN(8) c_dataEnd112[12];
 
-const __constant__  uint32_t __align__(8) c_H256[8] = {
+__constant__  const uint32_t c_H256[8] = {
 	0x6A09E667U, 0xBB67AE85U, 0x3C6EF372U, 0xA54FF53AU,
 	0x510E527FU, 0x9B05688CU, 0x1F83D9ABU, 0x5BE0CD19U
 };
-__constant__ static uint32_t __align__(8) c_K[64];
+__constant__ static uint32_t _ALIGN(16) c_K[64] = {
+	0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+	0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+	0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+	0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+	0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+	0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+	0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+	0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
+};
 
 static __thread uint32_t* d_resNonces;
-__constant__ static uint32_t __align__(8) c_target[2];
+__constant__ static uint32_t _ALIGN(8) c_target[2];
 __device__ uint64_t d_target[1];
 
 #ifdef __INTELLISENSE__
@@ -43,32 +57,24 @@ static const uint32_t cpu_K[64] = {
 	0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
 };
 
-#define ROTR ROTR32
-
 __host__
 static void sha256_step1_host(uint32_t a, uint32_t b, uint32_t c, uint32_t &d,
-	uint32_t e, uint32_t f, uint32_t g, uint32_t &h,
-	uint32_t in, const uint32_t Kshared)
+	uint32_t e, uint32_t f, uint32_t g, uint32_t &h, uint32_t in, const uint32_t Kshared)
 {
-	uint32_t t1,t2;
 	uint32_t vxandx = (((f) ^ (g)) & (e)) ^ (g); // xandx(e, f, g);
-	uint32_t bsg21 = ROTR(e, 6) ^ ROTR(e, 11) ^ ROTR(e, 25); // bsg2_1(e);
-	uint32_t bsg20 = ROTR(a, 2) ^ ROTR(a, 13) ^ ROTR(a, 22); //bsg2_0(a);
+	uint32_t bsg21 = ROTR32(e, 6) ^ ROTR32(e, 11) ^ ROTR32(e, 25); // bsg2_1(e);
+	uint32_t bsg20 = ROTR32(a, 2) ^ ROTR32(a, 13) ^ ROTR32(a, 22); //bsg2_0(a);
 	uint32_t andorv = ((b) & (c)) | (((b) | (c)) & (a)); //andor32(a,b,c);
-
-	t1 = h + bsg21 + vxandx + Kshared + in;
-	t2 = bsg20 + andorv;
+	uint32_t t1 = h + bsg21 + vxandx + Kshared + in;
+	uint32_t t2 = bsg20 + andorv;
 	d = d + t1;
 	h = t1 + t2;
 }
 
 __host__
 static void sha256_step2_host(uint32_t a, uint32_t b, uint32_t c, uint32_t &d,
-	uint32_t e, uint32_t f, uint32_t g, uint32_t &h,
-	uint32_t* in, uint32_t pc, const uint32_t Kshared)
+	uint32_t e, uint32_t f, uint32_t g, uint32_t &h, uint32_t* in, uint32_t pc, const uint32_t Kshared)
 {
-	uint32_t t1,t2;
-
 	int pcidx1 = (pc-2)  & 0xF;
 	int pcidx2 = (pc-7)  & 0xF;
 	int pcidx3 = (pc-15) & 0xF;
@@ -78,12 +84,13 @@ static void sha256_step2_host(uint32_t a, uint32_t b, uint32_t c, uint32_t &d,
 	uint32_t inx2 = in[pcidx2];
 	uint32_t inx3 = in[pcidx3];
 
-	uint32_t ssg21 = ROTR(inx1, 17) ^ ROTR(inx1, 19) ^ SPH_T32((inx1) >> 10); //ssg2_1(inx1);
-	uint32_t ssg20 = ROTR(inx3, 7) ^ ROTR(inx3, 18) ^ SPH_T32((inx3) >> 3); //ssg2_0(inx3);
+	uint32_t ssg21 = ROTR32(inx1, 17) ^ ROTR32(inx1, 19) ^ SPH_T32((inx1) >> 10); //ssg2_1(inx1);
+	uint32_t ssg20 = ROTR32(inx3, 7) ^ ROTR32(inx3, 18) ^ SPH_T32((inx3) >> 3); //ssg2_0(inx3);
 	uint32_t vxandx = (((f) ^ (g)) & (e)) ^ (g); // xandx(e, f, g);
-	uint32_t bsg21 = ROTR(e, 6) ^ ROTR(e, 11) ^ ROTR(e, 25); // bsg2_1(e);
-	uint32_t bsg20 = ROTR(a, 2) ^ ROTR(a, 13) ^ ROTR(a, 22); //bsg2_0(a);
+	uint32_t bsg21 = ROTR32(e, 6) ^ ROTR32(e, 11) ^ ROTR32(e, 25); // bsg2_1(e);
+	uint32_t bsg20 = ROTR32(a, 2) ^ ROTR32(a, 13) ^ ROTR32(a, 22); //bsg2_0(a);
 	uint32_t andorv = ((b) & (c)) | (((b) | (c)) & (a)); //andor32(a,b,c);
+	uint32_t t1,t2;
 
 	in[pc] = ssg21 + inx2 + ssg20 + inx0;
 
@@ -152,55 +159,32 @@ static void sha256_round_body_host(uint32_t* in, uint32_t* state, const uint32_t
 	state[7] += h;
 }
 
-__device__ __forceinline__
-uint32_t xor3b(const uint32_t a, const uint32_t b, const uint32_t c) {
-	uint32_t result;
-#if __CUDA_ARCH__ >= 500 && CUDA_VERSION >= 7050
-	asm ("lop3.b32 %0, %1, %2, %3, 0x96; // xor3b"  //0x96 = 0xF0 ^ 0xCC ^ 0xAA
-		: "=r"(result) : "r"(a), "r"(b),"r"(c));
-#else
-	result = a^b^c;
-#endif
-	return result;
-}
+#define xor3b(a,b,c) ((a ^ b) ^ c)
 
 __device__ __forceinline__ uint32_t bsg2_0(const uint32_t x)
 {
-	uint32_t r1 = ROTR32(x,2);
-	uint32_t r2 = ROTR32(x,13);
-	uint32_t r3 = ROTR32(x,22);
-	return xor3b(r1,r2,r3);
+	return xor3b(ROTR32(x,2),ROTR32(x,13),ROTR32(x,22));
 }
 
 __device__ __forceinline__ uint32_t bsg2_1(const uint32_t x)
 {
-	uint32_t r1 = ROTR32(x,6);
-	uint32_t r2 = ROTR32(x,11);
-	uint32_t r3 = ROTR32(x,25);
-	return xor3b(r1,r2,r3);
+	return xor3b(ROTR32(x,6),ROTR32(x,11),ROTR32(x,25));
 }
 
 __device__ __forceinline__ uint32_t ssg2_0(const uint32_t x)
 {
-	uint64_t r1 = ROTR32(x,7);
-	uint64_t r2 = ROTR32(x,18);
-	uint64_t r3 = shr_t32(x,3);
-	return xor3b(r1,r2,r3);
+	return xor3b(ROTR32(x,7),ROTR32(x,18),(x>>3));
 }
 
 __device__ __forceinline__ uint32_t ssg2_1(const uint32_t x)
 {
-	uint64_t r1 = ROTR32(x,17);
-	uint64_t r2 = ROTR32(x,19);
-	uint64_t r3 = shr_t32(x,10);
-	return xor3b(r1,r2,r3);
+	return xor3b(ROTR32(x,17),ROTR32(x,19),(x>>10));
 }
 
 __device__ __forceinline__ uint32_t andor32(const uint32_t a, const uint32_t b, const uint32_t c)
 {
 	uint32_t result;
-	asm("{\n\t"
-		".reg .u32 m,n,o;\n\t"
+	asm("{ .reg .u32 m,n,o; // andor32 \n\t"
 		"and.b32 m,  %1, %2;\n\t"
 		" or.b32 n,  %1, %2;\n\t"
 		"and.b32 o,   n, %3;\n\t"
@@ -210,27 +194,21 @@ __device__ __forceinline__ uint32_t andor32(const uint32_t a, const uint32_t b,
 	return result;
 }
 
-__device__ __forceinline__ uint2 vectorizeswap(uint64_t v) {
+__device__ __forceinline__ uint2 vectorizeswap(uint64_t v)
+{
 	uint2 result;
-	asm("mov.b64 {%0,%1},%2; \n\t"
+	asm("mov.b64 {%0,%1},%2; // vectorizeswap \n\t"
 		: "=r"(result.y), "=r"(result.x) : "l"(v));
 	return result;
 }
 
 __device__
-static void sha2_step1(uint32_t a, uint32_t b, uint32_t c, uint32_t &d, uint32_t e, uint32_t f, uint32_t g, uint32_t &h,
-	uint32_t in, const uint32_t Kshared)
+__forceinline__
+static void sha2_step1(uint32_t a, uint32_t b, uint32_t c, uint32_t &d, uint32_t e, uint32_t f, uint32_t g, uint32_t &h, uint32_t in, const uint32_t Kshared)
 {
-	uint32_t t1,t2;
-	uint32_t vxandx = xandx(e, f, g);
-	uint32_t bsg21 = bsg2_1(e);
-	uint32_t bsg20 = bsg2_0(a);
-	uint32_t andorv = andor32(a,b,c);
-
-	t1 = h + bsg21 + vxandx + Kshared + in;
-	t2 = bsg20 + andorv;
-	d = d + t1;
-	h = t1 + t2;
+	uint32_t t1 = bsg2_1(e) + ((((f) ^ (g)) & (e)) ^ (g)) + Kshared + in;
+	d = d + h + t1;
+	h += t1 + bsg2_0(a) + (((b) & (c)) | (((b) | (c)) & (a)));
 }
 
 __device__
@@ -263,6 +241,56 @@ static void sha2_step2(uint32_t a, uint32_t b, uint32_t c, uint32_t &d, uint32_t
 	h = t1 + t2;
 }
 
+__device__ __forceinline__
+static void sha256_round_first(uint32_t* in,uint32_t *buf, uint32_t* state, uint32_t* const Kshared)
+{
+	uint32_t a = buf[0];
+	uint32_t b = buf[1];
+	uint32_t c = buf[2];
+	uint32_t d = buf[3];
+	uint32_t e = buf[4];
+	uint32_t f = buf[5];
+	uint32_t g = buf[6];
+	uint32_t h = buf[7];
+
+	// 10 first steps made on host
+	sha2_step1(f,g,h,a,b,c,d,e,in[11],Kshared[11]);
+	sha2_step1(e,f,g,h,a,b,c,d,in[12],Kshared[12]);
+	sha2_step1(d,e,f,g,h,a,b,c,in[13],Kshared[13]);
+	sha2_step1(c,d,e,f,g,h,a,b,in[14],Kshared[14]);
+	sha2_step1(b,c,d,e,f,g,h,a,in[15],Kshared[15]);
+
+	#pragma unroll
+	for (int i=0; i<3; i++)
+	{
+		sha2_step2(a,b,c,d,e,f,g,h,in,0, Kshared[16+16*i]);
+		sha2_step2(h,a,b,c,d,e,f,g,in,1, Kshared[17+16*i]);
+		sha2_step2(g,h,a,b,c,d,e,f,in,2, Kshared[18+16*i]);
+		sha2_step2(f,g,h,a,b,c,d,e,in,3, Kshared[19+16*i]);
+		sha2_step2(e,f,g,h,a,b,c,d,in,4, Kshared[20+16*i]);
+		sha2_step2(d,e,f,g,h,a,b,c,in,5, Kshared[21+16*i]);
+		sha2_step2(c,d,e,f,g,h,a,b,in,6, Kshared[22+16*i]);
+		sha2_step2(b,c,d,e,f,g,h,a,in,7, Kshared[23+16*i]);
+		sha2_step2(a,b,c,d,e,f,g,h,in,8, Kshared[24+16*i]);
+		sha2_step2(h,a,b,c,d,e,f,g,in,9, Kshared[25+16*i]);
+		sha2_step2(g,h,a,b,c,d,e,f,in,10,Kshared[26+16*i]);
+		sha2_step2(f,g,h,a,b,c,d,e,in,11,Kshared[27+16*i]);
+		sha2_step2(e,f,g,h,a,b,c,d,in,12,Kshared[28+16*i]);
+		sha2_step2(d,e,f,g,h,a,b,c,in,13,Kshared[29+16*i]);
+		sha2_step2(c,d,e,f,g,h,a,b,in,14,Kshared[30+16*i]);
+		sha2_step2(b,c,d,e,f,g,h,a,in,15,Kshared[31+16*i]);
+	}
+
+	buf[ 0] = state[0] + a;
+	buf[ 1] = state[1] + b;
+	buf[ 2] = state[2] + c;
+	buf[ 3] = state[3] + d;
+	buf[ 4] = state[4] + e;
+	buf[ 5] = state[5] + f;
+	buf[ 6] = state[6] + g;
+	buf[ 7] = state[7] + h;
+}
+
 __device__
 static void sha256_round_body(uint32_t* in, uint32_t* state, uint32_t* const Kshared)
 {
@@ -328,166 +356,70 @@ uint64_t cuda_swab32ll(uint64_t x) {
 	return MAKE_ULONGLONG(cuda_swab32(_LODWORD(x)), cuda_swab32(_HIDWORD(x)));
 }
 
-#if 0
 __global__
-void lbry_sha256_gpu_hash_112(const uint32_t threads, const uint32_t startNonce, const bool swabNonce, uint64_t *outputHash)
-{
-	const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
-	if (thread < threads)
-	{
-		const uint32_t nonce = startNonce + thread;
-
-		uint32_t dat[16];
-		#pragma unroll
-		for (int i=0;i<11;i++) dat[i] = c_dataEnd112[i]; // pre "swabed"
-		dat[11] = swabNonce ? cuda_swab32(nonce) : nonce;
-		dat[12] = 0x80000000;
-		dat[13] = 0;
-		dat[14] = 0;
-		dat[15] = 0x380;
-
-		uint32_t __align__(8) buf[8];
-		#pragma unroll
-		for (int i=0;i<8;i++) buf[i] = c_midstate112[i];
-
-		sha256_round_body(dat, buf, c_K);
-
-		// output
-		uint2* output = (uint2*) (&outputHash[thread * 8U]);
-		#pragma unroll
-		for (int i=0;i<4;i++) {
-			//output[i] = vectorize(cuda_swab32ll(((uint64_t*)buf)[i]));
-			output[i] = vectorize(((uint64_t*)buf)[i]); // out without swap, new sha256 after
-		}
-	}
-}
-
-__global__
-void lbry_sha256_gpu_hash_32(uint32_t threads, uint64_t *Hash512)
-{
-	const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
-	if (thread < threads)
-	{
-		uint32_t __align__(8) buf[8]; // align for vectorize
-		#pragma unroll
-		for (int i=0; i<8; i++) buf[i] = c_H256[i];
-
-		uint32_t* input = (uint32_t*) (&Hash512[thread * 8U]);
-
-		uint32_t dat[16];
-		#pragma unroll
-		//for (int i=0;i<8;i++) dat[i] = cuda_swab32(input[i]);
-		for (int i=0; i<8; i++) dat[i] = input[i];
-		dat[8] = 0x80000000;
-		#pragma unroll
-		for (int i=9; i<15; i++) dat[i] = 0;
-		dat[15] = 0x100;
-
-		sha256_round_body(dat, buf, c_K);
-
-		// output
-		uint2* output = (uint2*) input;
-		#pragma unroll
-		for (int i=0;i<4;i++) {
-			//output[i] = vectorize(cuda_swab32ll(((uint64_t*)buf)[i]));
-			output[i] = vectorizeswap(((uint64_t*)buf)[i]);
-		}
-#ifdef PAD_ZEROS
-		#pragma unroll
-		for (int i=4; i<8; i++) output[i] = vectorize(0);
-#endif
-	}
-}
-
-__host__
-void lbry_sha256_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream)
-{
-	const int threadsperblock = 256;
-
-	dim3 grid(threads/threadsperblock);
-	dim3 block(threadsperblock);
-
-	lbry_sha256_gpu_hash_112 <<<grid, block, 0, stream>>> (threads, startNonce, swabNonce, (uint64_t*) d_outputHash);
-	cudaGetLastError();
-}
-
-__host__
-void lbry_sha256_hash_32(int thr_id, uint32_t threads, uint32_t *d_Hash, cudaStream_t stream)
-{
-	const int threadsperblock = 256;
-
-	dim3 grid(threads/threadsperblock);
-	dim3 block(threadsperblock);
-
-	lbry_sha256_gpu_hash_32 <<<grid, block, 0, stream>>> (threads, (uint64_t*) d_Hash);
-}
-#endif
-
-__global__
-void lbry_sha256d_gpu_hash_112(const uint32_t threads, const uint32_t startNonce, const bool swabNonce, uint64_t *outputHash)
+__launch_bounds__(512,2) /* to force 64 regs */
+void lbry_sha256d_gpu_hash_112(const uint32_t threads, const uint32_t startNonce, uint64_t *outputHash)
 {
 	const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
 	extern __shared__ uint32_t s_K[];
-	//s_K[thread & 63] = c_K[thread & 63];
 	if (threadIdx.x < 64U) s_K[threadIdx.x] = c_K[threadIdx.x];
+	//__threadfence_block();
 	if (thread < threads)
 	{
-		const uint32_t nonce = startNonce + thread;
-
 		uint32_t dat[16];
 		#pragma unroll
 		for (int i=0; i<11; i++) dat[i] = c_dataEnd112[i];
-		dat[11] = swabNonce ? cuda_swab32(nonce) : nonce;
+		dat[11] = startNonce + thread;
 		dat[12] = 0x80000000;
 		dat[13] = 0;
 		dat[14] = 0;
 		dat[15] = 0x380;
 
-		uint32_t __align__(8) buf[8];
-		#pragma unroll
-		for (int i=0;i<8;i++) buf[i] = c_midstate112[i];
+		uint32_t __align__(8) buf[8], state[8];
 
-		sha256_round_body(dat, buf, s_K);
+		*(uint2x4*)&state[0] = *(uint2x4*)&c_midstate112[0];
+		*(uint2x4*)&buf[0]   = *(uint2x4*)&c_midbuffer112[0];
+
+		sha256_round_first(dat, buf, state, c_K); // no shared mem here
 
 		// second sha256
 
-		#pragma unroll
-		for (int i=0; i<8; i++) dat[i] = buf[i];
+		*(uint2x4*)&dat[0] = *(uint2x4*)&buf[0];
+
 		dat[8] = 0x80000000;
+
 		#pragma unroll
 		for (int i=9; i<15; i++) dat[i] = 0;
 		dat[15] = 0x100;
 
-		#pragma unroll
-		for (int i=0; i<8; i++) buf[i] = c_H256[i];
+		*(uint2x4*)&buf[0] = *(uint2x4*)&c_H256[0];
 
 		sha256_round_body(dat, buf, s_K);
 
 		// output
-		uint2* output = (uint2*) (&outputHash[thread * 8U]);
-		#pragma unroll
-		for (int i=0;i<4;i++) {
-		//	//output[i] = vectorize(cuda_swab32ll(((uint64_t*)buf)[i]));
-			output[i] = vectorizeswap(((uint64_t*)buf)[i]);
-		}
+		*(uint2*)&buf[0] = vectorizeswap(((uint64_t*)buf)[0]);
+		*(uint2*)&buf[2] = vectorizeswap(((uint64_t*)buf)[1]);
+		*(uint2*)&buf[4] = vectorizeswap(((uint64_t*)buf)[2]);
+		*(uint2*)&buf[6] = vectorizeswap(((uint64_t*)buf)[3]);
+
+		*(uint2x4*)&outputHash[thread*8U] = *(uint2x4*)&buf[0];
 	}
 }
 
 __host__
-void lbry_sha256d_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream)
+void lbry_sha256d_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash)
 {
-	const int threadsperblock = 256;
+	const int threadsperblock = 512;
 
 	dim3 grid(threads/threadsperblock);
 	dim3 block(threadsperblock);
 
-	lbry_sha256d_gpu_hash_112 <<<grid, block, 64*4, stream>>> (threads, startNonce, swabNonce, (uint64_t*) d_outputHash);
+	lbry_sha256d_gpu_hash_112 <<<grid, block, 64*4>>> (threads, startNonce, (uint64_t*) d_outputHash);
 }
 
 __host__
 void lbry_sha256_init(int thr_id)
 {
-	//cudaMemcpyToSymbol(c_H256, cpu_H256, sizeof(cpu_H256), 0, cudaMemcpyHostToDevice);
 	cudaMemcpyToSymbol(c_K, cpu_K, sizeof(cpu_K), 0, cudaMemcpyHostToDevice);
 	CUDA_SAFE_CALL(cudaMalloc(&d_resNonces, 4*sizeof(uint32_t)));
 }
@@ -507,21 +439,53 @@ void lbry_sha256_setBlock_112(uint32_t *pdata, uint32_t *ptarget)
 	for (int i=0;i<11;i++) end[i] = cuda_swab32(pdata[16+i]);
 	sha256_round_body_host(in, buf, cpu_K);
 
-	CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_midstate112, buf, 32, 0, cudaMemcpyHostToDevice));
-	CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_dataEnd112,  end, sizeof(end), 0, cudaMemcpyHostToDevice));
-	CUDA_SAFE_CALL(cudaMemcpyToSymbol(c_target, &ptarget[6], sizeof(uint64_t), 0, cudaMemcpyHostToDevice));
-	CUDA_SAFE_CALL(cudaMemcpyToSymbol(d_target, &ptarget[6], sizeof(uint64_t), 0, cudaMemcpyHostToDevice));
+	cudaMemcpyToSymbol(c_midstate112, buf, 32, 0, cudaMemcpyHostToDevice);
+	cudaMemcpyToSymbol(c_dataEnd112,  end, sizeof(end), 0, cudaMemcpyHostToDevice);
+
+	uint32_t a = buf[0];
+	uint32_t b = buf[1];
+	uint32_t c = buf[2];
+	uint32_t d = buf[3];
+	uint32_t e = buf[4];
+	uint32_t f = buf[5];
+	uint32_t g = buf[6];
+	uint32_t h = buf[7];
+
+	sha256_step1_host(a,b,c,d,e,f,g,h,end[0], cpu_K[0]);
+	sha256_step1_host(h,a,b,c,d,e,f,g,end[1], cpu_K[1]);
+	sha256_step1_host(g,h,a,b,c,d,e,f,end[2], cpu_K[2]);
+	sha256_step1_host(f,g,h,a,b,c,d,e,end[3], cpu_K[3]);
+	sha256_step1_host(e,f,g,h,a,b,c,d,end[4], cpu_K[4]);
+	sha256_step1_host(d,e,f,g,h,a,b,c,end[5], cpu_K[5]);
+	sha256_step1_host(c,d,e,f,g,h,a,b,end[6], cpu_K[6]);
+	sha256_step1_host(b,c,d,e,f,g,h,a,end[7], cpu_K[7]);
+	sha256_step1_host(a,b,c,d,e,f,g,h,end[8], cpu_K[8]);
+	sha256_step1_host(h,a,b,c,d,e,f,g,end[9], cpu_K[9]);
+	sha256_step1_host(g,h,a,b,c,d,e,f,end[10],cpu_K[10]);
+
+	buf[0] = a;
+	buf[1] = b;
+	buf[2] = c;
+	buf[3] = d;
+	buf[4] = e;
+	buf[5] = f;
+	buf[6] = g;
+	buf[7] = h;
+
+	cudaMemcpyToSymbol(c_midbuffer112, buf, 32, 0, cudaMemcpyHostToDevice);
+
+	cudaMemcpyToSymbol(c_target, &ptarget[6], sizeof(uint64_t), 0, cudaMemcpyHostToDevice);
+	cudaMemcpyToSymbol(d_target, &ptarget[6], sizeof(uint64_t), 0, cudaMemcpyHostToDevice);
 }
 
 // ------------------------------------------------------------------------------------------
 
-
 static __constant__ uint32_t c_IV[5] = {
 	0x67452301u, 0xEFCDAB89u, 0x98BADCFEu, 0x10325476u, 0xC3D2E1F0u
 };
 
 /*
- * Round functions for RIPEMD-128 and RIPEMD-160.
+ * Round functions for RIPEMD-160.
  */
 #if 1
 #define F1(x, y, z)   ((x) ^ (y) ^ (z))
@@ -753,19 +717,21 @@ static __constant__ uint32_t c_IV[5] = {
 }
 
 __global__
-__launch_bounds__(256,3)
-void lbry_sha256d_gpu_hash_final(const uint32_t threads, const uint32_t startNonce, uint64_t *Hash512, uint32_t *resNonces)
+__launch_bounds__(640,2) /* 640,2 <= 48 regs, 512,2 <= 64 */
+void lbry_sha256d_gpu_hash_final(const uint32_t threads, uint64_t *Hash512, uint32_t *resNonces)
 {
 	const uint32_t thread = (blockDim.x * blockIdx.x + threadIdx.x);
+	extern __shared__ uint32_t s_K[];
+	if (threadIdx.x < 64U) s_K[threadIdx.x] = c_K[threadIdx.x];
+	//__threadfence_block();
 	if (thread < threads)
 	{
 		uint32_t* input = (uint32_t*) (&Hash512[thread * 8U]);
 
-		uint32_t __align__(8) buf[8]; // align for vectorize
-		uint32_t dat[16];
-		#pragma unroll
-		for (int i=0; i<8; i++)
-			dat[i] = (input[i]);
+		uint32_t __align__(8) dat[16];
+
+		*(uint2x4*)&dat[0] = *(uint2x4*)&input[0];
+
 		dat[8] = 0x80;
 
 		#pragma unroll
@@ -780,15 +746,15 @@ void lbry_sha256d_gpu_hash_final(const uint32_t threads, const uint32_t startNon
 
 		RIPEMD160_ROUND_BODY(dat, h);
 
+		uint32_t __align__(8) buf[8]; // align for vectorize
 		#pragma unroll
 		for (int i=0; i<5; i++)
 			buf[i] = h[i];
 
 		// second 32 bytes block hash
 
-		#pragma unroll
-		for (int i=0; i<8; i++)
-			dat[i] = (input[8+i]);
+		*(uint2x4*)&dat[0] = *(uint2x4*)&input[8];
+
 		dat[8] = 0x80;
 
 		#pragma unroll
@@ -810,56 +776,50 @@ void lbry_sha256d_gpu_hash_final(const uint32_t threads, const uint32_t startNon
 		for (int i=0;i<5;i++) dat[i+5] = cuda_swab32(h[i]);
 		dat[10] = 0x80000000;
 		#pragma unroll
-		for (int i=11;i<15;i++) dat[i] = 0;
+		for (int i=11; i<15; i++) dat[i] = 0;
 		dat[15] = 0x140;
 
-		#pragma unroll
-		for (int i=0;i<8;i++) buf[i] = c_H256[i];
+		*(uint2x4*)&buf[0] = *(uint2x4*)&c_H256[0];
 
-		sha256_round_body(dat, buf, c_K);
+		sha256_round_body(dat, buf, c_K); // s_K uses too much regs
 
 		// second sha256
 
-		#pragma unroll
-		for (int i=0;i<8;i++) dat[i] = buf[i];
+		*(uint2x4*)&dat[0] = *(uint2x4*)&buf[0];
 		dat[8] = 0x80000000;
 		#pragma unroll
-		for (int i=9;i<15;i++) dat[i] = 0;
+		for (int i=9; i<15; i++) dat[i] = 0;
 		dat[15] = 0x100;
 
-		#pragma unroll
-		for (int i=0;i<8;i++) buf[i] = c_H256[i];
+		*(uint2x4*)&buf[0] = *(uint2x4*)&c_H256[0];
 
-		sha256_round_body(dat, buf, c_K);
+		sha256_round_body(dat, buf, s_K);
 
 		// valid nonces
-		uint64_t high = cuda_swab32ll(((uint64_t*)buf)[3]);
+		const uint64_t high = cuda_swab32ll(((uint64_t*)buf)[3]);
 		if (high <= d_target[0]) {
-			// printf("%08x %08x - %016llx %016llx - %08x %08x\n", buf[7], buf[6], high, d_target[0], c_target[1], c_target[0]);
-			uint32_t nonce = startNonce + thread;
-			resNonces[1] = atomicExch(resNonces, nonce);
+			resNonces[1] = atomicExch(resNonces, thread);
 			d_target[0] = high;
 		}
 	}
 }
 
 __host__
-void lbry_sha256d_hash_final(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_inputHash, uint32_t *resNonces, cudaStream_t stream)
+void lbry_sha256d_hash_final(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_inputHash, uint32_t *resNonces)
 {
-	const int threadsperblock = 256;
+	const int threadsperblock = 512;
 
 	dim3 grid(threads/threadsperblock);
 	dim3 block(threadsperblock);
 
-	CUDA_SAFE_CALL(cudaMemset(d_resNonces, 0xFF, 2 * sizeof(uint32_t)));
-	cudaThreadSynchronize();
-
-	lbry_sha256d_gpu_hash_final <<<grid, block, 0, stream>>> (threads, startNonce, (uint64_t*) d_inputHash, d_resNonces);
+	cudaMemset(d_resNonces, 0xFF, 2 * sizeof(uint32_t));
 
-	cudaThreadSynchronize();
+	lbry_sha256d_gpu_hash_final <<<grid, block, 64*4>>> (threads, (uint64_t*) d_inputHash, d_resNonces);
 
-	CUDA_SAFE_CALL(cudaMemcpy(resNonces, d_resNonces, 2 * sizeof(uint32_t), cudaMemcpyDeviceToHost));
+	cudaMemcpy(resNonces, d_resNonces, 2 * sizeof(uint32_t), cudaMemcpyDeviceToHost);
 	if (resNonces[0] == resNonces[1]) {
 		resNonces[1] = UINT32_MAX;
 	}
+	if (resNonces[0] != UINT32_MAX) resNonces[0] += startNonce;
+	if (resNonces[1] != UINT32_MAX) resNonces[1] += startNonce;
 }

lbry/cuda_sha512_lbry.cu

@@ -161,7 +161,7 @@ void lbry_sha512_gpu_hash_32(const uint32_t threads, uint64_t *g_hash)
 }
 
 __host__
-void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStream_t stream)
+void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash)
 {
 	const int threadsperblock = 256;
 
@@ -169,7 +169,7 @@ void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStr
 	dim3 block(threadsperblock);
 
 	size_t shared_size = 0;
-	lbry_sha512_gpu_hash_32 <<<grid, block, shared_size, stream>>> (threads, (uint64_t*)d_hash);
+	lbry_sha512_gpu_hash_32 <<<grid, block, shared_size>>> (threads, (uint64_t*)d_hash);
 }
 
 /**************************************************************************************************/

lbry/lbry.cu

@@ -65,12 +65,10 @@ extern "C" void lbry_hash(void* output, const void* input)
 extern void lbry_sha256_init(int thr_id);
 extern void lbry_sha256_free(int thr_id);
 extern void lbry_sha256_setBlock_112(uint32_t *pdata, uint32_t *ptarget);
-extern void lbry_sha256_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream);
-extern void lbry_sha256d_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash, bool swabNonce, cudaStream_t stream);
-extern void lbry_sha256_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStream_t stream);
+extern void lbry_sha256d_hash_112(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_outputHash);
 extern void lbry_sha512_init(int thr_id);
-extern void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash, cudaStream_t stream);
-extern void lbry_sha256d_hash_final(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_inputHash, uint32_t *resNonces, cudaStream_t stream);
+extern void lbry_sha512_hash_32(int thr_id, uint32_t threads, uint32_t *d_hash);
+extern void lbry_sha256d_hash_final(int thr_id, uint32_t threads, uint32_t startNonce, uint32_t *d_inputHash, uint32_t *resNonces);
 
 static __inline uint32_t swab32_if(uint32_t val, bool iftrue) {
 	return iftrue ? swab32(val) : val;
@@ -91,7 +89,7 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
 	uint32_t *ptarget = work->target;
 
 	const uint32_t first_nonce = pdata[LBC_NONCE_OFT32];
-	const int swap = 0; // to toggle nonce endian
+	const int swap = 0; // to toggle nonce endian (need kernel change)
 
 	const int dev_id = device_map[thr_id];
 	int intensity = (device_sm[dev_id] > 500 && !is_windows()) ? 22 : 20;
@@ -99,7 +97,7 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
 	if (device_sm[dev_id] < 350) intensity = 18;
 
 	uint32_t throughput = cuda_default_throughput(thr_id, 1U << intensity);
-	if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);
+	//if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);
 
 	if (opt_benchmark) {
 		ptarget[7] = 0xf;
@@ -118,7 +116,6 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
 
 		lbry_sha256_init(thr_id);
 		lbry_sha512_init(thr_id);
-		cuda_check_cpu_init(thr_id, throughput);
 		CUDA_LOG_ERROR();
 
 		init[thr_id] = true;
@@ -129,23 +126,18 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
 	}
 
 	lbry_sha256_setBlock_112(endiandata, ptarget);
-	cuda_check_cpu_setTarget(ptarget);
 
 	do {
-
 		// Hash with CUDA
-		#if 0
-		lbry_sha256_hash_112(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], swap, 0);
-		lbry_sha256_hash_32(thr_id, throughput, d_hash[thr_id], 0);
-		#else
-		lbry_sha256d_hash_112(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], swap, 0);
-		#endif
+		lbry_sha256d_hash_112(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id]);
 		CUDA_LOG_ERROR();
 
-		lbry_sha512_hash_32(thr_id, throughput, d_hash[thr_id], 0);
+		lbry_sha512_hash_32(thr_id, throughput, d_hash[thr_id]);
+		CUDA_LOG_ERROR();
 
 		uint32_t resNonces[2] = { UINT32_MAX, UINT32_MAX };
-		lbry_sha256d_hash_final(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], resNonces, 0);
+		lbry_sha256d_hash_final(thr_id, throughput, pdata[LBC_NONCE_OFT32], d_hash[thr_id], resNonces);
+		CUDA_LOG_ERROR();
 
 		uint32_t foundNonce = resNonces[0];
 		*hashes_done = pdata[LBC_NONCE_OFT32] - first_nonce + throughput;
@@ -165,11 +157,11 @@ extern "C" int scanhash_lbry(int thr_id, struct work *work, uint32_t max_nonce,
 						gpulog(LOG_BLUE, thr_id, "found second nonce %08x", swab32(secNonce));
 					endiandata[LBC_NONCE_OFT32] = swab32_if(secNonce, !swap);
 					lbry_hash(vhash, endiandata);
+					work->nonces[1] = swab32_if(secNonce, swap);
 					if (bn_hash_target_ratio(vhash, ptarget) > work->shareratio) {
 						work_set_target_ratio(work, vhash);
 						xchg(work->nonces[0], work->nonces[1]);
 					}
-					work->nonces[1] = swab32_if(secNonce, swap);
 					res++;
 				}
 				pdata[LBC_NONCE_OFT32] = work->nonces[0];
@@ -204,7 +196,6 @@ void free_lbry(int thr_id)
 	cudaFree(d_hash[thr_id]);
 	lbry_sha256_free(thr_id);
 
-	cuda_check_cpu_free(thr_id);
 	init[thr_id] = false;
 
 	cudaDeviceSynchronize();