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equi_miner.cu
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equi_miner.cu
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/*
Equihash solver created by djeZo (l33tsoftw@gmail.com) for NiceHash
Based on CUDA solver by John Tromp released under MIT license.
Some helper functions taken out of OpenCL solver by Marc Bevand
released under MIT license.
cuda_djezo solver is released by NiceHash (www.nicehash.com) under
GPL 3.0 license. If you don't have a copy, you can obtain one from
https://www.gnu.org/licenses/gpl-3.0.txt
*/
/*
The MIT License (MIT)
Copyright (c) 2016 John Tromp
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software, and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/*
The MIT License (MIT)
Copyright (c) 2016 Marc Bevand
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software, and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#ifdef WIN32
#include <Windows.h>
#endif
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <assert.h>
#include <functional>
#include <vector>
#include <iostream>
#include <mutex>
#include "eqcuda.hpp"
#include "sm_32_intrinsics.h"
#define WN 200
#define WK 9
#define NDIGITS (WK+1)
#define DIGITBITS (WN/(NDIGITS))
#define PROOFSIZE (1<<WK)
#define BASE (1<<DIGITBITS)
#define NHASHES (2*BASE)
#define HASHESPERBLAKE (512/WN)
#define HASHOUT (HASHESPERBLAKE*WN/8)
#define NBLOCKS ((NHASHES + HASHESPERBLAKE - 1) / HASHESPERBLAKE)
#define BUCKBITS (DIGITBITS - RB)
#define NBUCKETS (1 << BUCKBITS)
#define BUCKMASK (NBUCKETS - 1)
#define SLOTBITS (RB + 2)
#define SLOTRANGE (1 << SLOTBITS)
#define NSLOTS SM
#define SLOTMASK (SLOTRANGE - 1)
#define NRESTS (1 << RB)
#define RESTMASK (NRESTS - 1)
#define CANTORBITS (2 * SLOTBITS - 2)
#define CANTORMASK ((1 << CANTORBITS) - 1)
#define CANTORMAXSQRT (2 * NSLOTS)
#define RB8_NSLOTS 640
#define RB8_NSLOTS_LD 624
#define FD_THREADS 128
// reduce vstudio warnings (__byteperm, blockIdx...)
#ifdef __INTELLISENSE__
#include <device_functions.h>
#include <device_launch_parameters.h>
#define __launch_bounds__(max_tpb, min_blocks)
#define __CUDA_ARCH__ 520
uint32_t __byte_perm(uint32_t x, uint32_t y, uint32_t z);
uint32_t __byte_perm(uint32_t x, uint32_t y, uint32_t z);
uint32_t __shfl(uint32_t x, uint32_t y, uint32_t z);
uint32_t atomicExch(uint32_t *x, uint32_t y);
uint32_t atomicAdd(uint32_t *x, uint32_t y);
void __syncthreads(void);
void __threadfence(void);
void __threadfence_block(void);
uint32_t __ldg(const uint32_t* address);
uint64_t __ldg(const uint64_t* address);
uint4 __ldca(const uint4 *ptr);
u32 __ldca(const u32 *ptr);
u32 umin(const u32, const u32);
u32 umax(const u32, const u32);
#endif
typedef u32 proof[PROOFSIZE];
struct __align__(32) slot
{
u32 hash[8];
};
struct __align__(16) slotsmall
{
u32 hash[4];
};
struct __align__(8) slottiny
{
u32 hash[2];
};
template <u32 RB, u32 SM>
struct equi
{
slot round0trees[4096][RB8_NSLOTS];
slot trees[1][NBUCKETS][NSLOTS];
struct
{
slotsmall treessmall[NSLOTS];
slottiny treestiny[NSLOTS];
} round2trees[NBUCKETS];
struct
{
slotsmall treessmall[NSLOTS];
slottiny treestiny[NSLOTS];
} round3trees[NBUCKETS];
slotsmall treessmall[4][NBUCKETS][NSLOTS];
slottiny treestiny[1][4096][RB8_NSLOTS_LD];
u32 round4bidandsids[NBUCKETS][NSLOTS];
union
{
u64 blake_h[8];
u32 blake_h32[16];
};
struct
{
u32 nslots8[4096];
u32 nslots0[4096];
u32 nslots[9][NBUCKETS];
scontainerreal srealcont;
} edata;
};
__device__ __constant__ const u64 blake_iv[] =
{
0x6a09e667f3bcc908, 0xbb67ae8584caa73b,
0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
0x510e527fade682d1, 0x9b05688c2b3e6c1f,
0x1f83d9abfb41bd6b, 0x5be0cd19137e2179,
};
__device__ __forceinline__ uint2 operator^ (uint2 a, uint2 b)
{
return make_uint2(a.x ^ b.x, a.y ^ b.y);
}
__device__ __forceinline__ uint4 operator^ (uint4 a, uint4 b)
{
return make_uint4(a.x ^ b.x, a.y ^ b.y, a.z ^ b.z, a.w ^ b.w);
}
__device__ __forceinline__ uint2 ROR2(const uint2 a, const int offset)
{
uint2 result;
{
asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(a.y), "r"(a.x), "r"(offset));
asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(offset));
}
return result;
}
__device__ __forceinline__ uint2 SWAPUINT2(uint2 value)
{
return make_uint2(value.y, value.x);
}
__device__ __forceinline__ uint2 ROR24(const uint2 a)
{
uint2 result;
result.x = __byte_perm(a.y, a.x, 0x2107);
result.y = __byte_perm(a.y, a.x, 0x6543);
return result;
}
__device__ __forceinline__ uint2 ROR16(const uint2 a)
{
uint2 result;
result.x = __byte_perm(a.y, a.x, 0x1076);
result.y = __byte_perm(a.y, a.x, 0x5432);
return result;
}
__device__ __forceinline__ void G2(u64 & a, u64 & b, u64 & c, u64 & d, u64 x, u64 y)
{
a = a + b + x;
((uint2*)&d)[0] = SWAPUINT2(((uint2*)&d)[0] ^ ((uint2*)&a)[0]);
c = c + d;
((uint2*)&b)[0] = ROR24(((uint2*)&b)[0] ^ ((uint2*)&c)[0]);
a = a + b + y;
((uint2*)&d)[0] = ROR16(((uint2*)&d)[0] ^ ((uint2*)&a)[0]);
c = c + d;
((uint2*)&b)[0] = ROR2(((uint2*)&b)[0] ^ ((uint2*)&c)[0], 63U);
}
struct packer_default
{
__device__ __forceinline__ static u32 set_bucketid_and_slots(const u32 bucketid, const u32 s0, const u32 s1, const u32 RB, const u32 SM)
{
return (((bucketid << SLOTBITS) | s0) << SLOTBITS) | s1;
}
__device__ __forceinline__ static u32 get_bucketid(const u32 bid, const u32 RB, const u32 SM)
{
// BUCKMASK-ed to prevent illegal memory accesses in case of memory errors
return (bid >> (2 * SLOTBITS)) & BUCKMASK;
}
__device__ __forceinline__ static u32 get_slot0(const u32 bid, const u32 s1, const u32 RB, const u32 SM)
{
return bid & SLOTMASK;
}
__device__ __forceinline__ static u32 get_slot1(const u32 bid, const u32 RB, const u32 SM)
{
return (bid >> SLOTBITS) & SLOTMASK;
}
};
struct packer_cantor
{
__device__ __forceinline__ static u32 cantor(const u32 s0, const u32 s1)
{
u32 a = umax(s0, s1);
u32 b = umin(s0, s1);
return a * (a + 1) / 2 + b;
}
__device__ __forceinline__ static u32 set_bucketid_and_slots(const u32 bucketid, const u32 s0, const u32 s1, const u32 RB, const u32 SM)
{
return (bucketid << CANTORBITS) | cantor(s0, s1);
}
__device__ __forceinline__ static u32 get_bucketid(const u32 bid, const u32 RB, const u32 SM)
{
return (bid >> CANTORBITS) & BUCKMASK;
}
__device__ __forceinline__ static u32 get_slot0(const u32 bid, const u32 s1, const u32 RB, const u32 SM)
{
return ((bid & CANTORMASK) - cantor(0, s1)) & SLOTMASK;
}
__device__ __forceinline__ static u32 get_slot1(const u32 bid, const u32 RB, const u32 SM)
{
u32 k, q, sqr = 8 * (bid & CANTORMASK) + 1;
// this k=sqrt(sqr) computing loop averages 3.4 iterations out of maximum 9
for (k = CANTORMAXSQRT; (q = sqr / k) < k; k = (k + q) / 2);
return ((k - 1) / 2) & SLOTMASK;
}
};
template <u32 RB, u32 SM, typename PACKER>
__global__ void digit_first(equi<RB, SM>* eq, u32 nonce)
{
const u32 block = blockIdx.x * blockDim.x + threadIdx.x;
__shared__ u64 hash_h[8];
u32* hash_h32 = (u32*)hash_h;
if (threadIdx.x < 16)
hash_h32[threadIdx.x] = __ldca(&eq->blake_h32[threadIdx.x]);
__syncthreads();
u64 m = (u64)block << 32 | (u64)nonce;
union
{
u64 v[16];
u32 v32[32];
uint4 v128[8];
};
v[0] = hash_h[0];
v[1] = hash_h[1];
v[2] = hash_h[2];
v[3] = hash_h[3];
v[4] = hash_h[4];
v[5] = hash_h[5];
v[6] = hash_h[6];
v[7] = hash_h[7];
v[8] = blake_iv[0];
v[9] = blake_iv[1];
v[10] = blake_iv[2];
v[11] = blake_iv[3];
v[12] = blake_iv[4] ^ (128 + 16);
v[13] = blake_iv[5];
v[14] = blake_iv[6] ^ 0xffffffffffffffff;
v[15] = blake_iv[7];
// mix 1
G2(v[0], v[4], v[8], v[12], 0, m);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 2
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], m, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 3
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, m);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 4
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, m);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 5
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, m);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 6
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], m, 0);
// mix 7
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], m, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 8
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, m);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 9
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], m, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 10
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], m, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 11
G2(v[0], v[4], v[8], v[12], 0, m);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], 0, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
// mix 12
G2(v[0], v[4], v[8], v[12], 0, 0);
G2(v[1], v[5], v[9], v[13], 0, 0);
G2(v[2], v[6], v[10], v[14], 0, 0);
G2(v[3], v[7], v[11], v[15], 0, 0);
G2(v[0], v[5], v[10], v[15], m, 0);
G2(v[1], v[6], v[11], v[12], 0, 0);
G2(v[2], v[7], v[8], v[13], 0, 0);
G2(v[3], v[4], v[9], v[14], 0, 0);
v[0] ^= hash_h[0] ^ v[8];
v[1] ^= hash_h[1] ^ v[9];
v[2] ^= hash_h[2] ^ v[10];
v[3] ^= hash_h[3] ^ v[11];
v[4] ^= hash_h[4] ^ v[12];
v[5] ^= hash_h[5] ^ v[13];
v32[12] ^= hash_h32[12] ^ v32[28];
u32 bexor = __byte_perm(v32[0], 0, 0x4012); // first 20 bits
u32 bucketid;
asm("bfe.u32 %0, %1, 12, 12;" : "=r"(bucketid) : "r"(bexor));
u32 slotp = atomicAdd(&eq->edata.nslots0[bucketid], 1);
if (slotp < RB8_NSLOTS)
{
slot* s = &eq->round0trees[bucketid][slotp];
uint4 tt;
tt.x = __byte_perm(v32[0], v32[1], 0x1234);
tt.y = __byte_perm(v32[1], v32[2], 0x1234);
tt.z = __byte_perm(v32[2], v32[3], 0x1234);
tt.w = __byte_perm(v32[3], v32[4], 0x1234);
*(uint4*)(&s->hash[0]) = tt;
tt.x = __byte_perm(v32[4], v32[5], 0x1234);
tt.y = __byte_perm(v32[5], v32[6], 0x1234);
tt.z = 0;
tt.w = block << 1;
*(uint4*)(&s->hash[4]) = tt;
}
bexor = __byte_perm(v32[6], 0, 0x0123);
asm("bfe.u32 %0, %1, 12, 12;" : "=r"(bucketid) : "r"(bexor));
slotp = atomicAdd(&eq->edata.nslots0[bucketid], 1);
if (slotp < RB8_NSLOTS)
{
slot* s = &eq->round0trees[bucketid][slotp];
uint4 tt;
tt.x = __byte_perm(v32[6], v32[7], 0x2345);
tt.y = __byte_perm(v32[7], v32[8], 0x2345);
tt.z = __byte_perm(v32[8], v32[9], 0x2345);
tt.w = __byte_perm(v32[9], v32[10], 0x2345);
*(uint4*)(&s->hash[0]) = tt;
tt.x = __byte_perm(v32[10], v32[11], 0x2345);
tt.y = __byte_perm(v32[11], v32[12], 0x2345);
tt.z = 0;
tt.w = (block << 1) + 1;
*(uint4*)(&s->hash[4]) = tt;
}
}
/*
Functions digit_1 to digit_8 works by the same principle;
Each thread does 2-3 slot loads (loads are coalesced).
Xorwork of slots is loaded into shared memory and is kept in registers (except for digit_1).
At the same time, restbits (8 or 9 bits) in xorwork are used for collisions.
Restbits determine position in ht.
Following next is pair creation. First one (or two) pairs' xorworks are put into global memory
as soon as possible, the rest pairs are saved in shared memory (one u32 per pair - 16 bit indices).
In most cases, all threads have one (or two) pairs so with this trick, we offload memory writes a bit in last step.
In last step we save xorwork of pairs in memory.
*/
template <u32 RB, u32 SM, int SSM, typename PACKER, u32 MAXPAIRS, u32 THREADS>
__global__ void digit_1(equi<RB, SM>* eq)
{
__shared__ u16 ht[256][SSM - 1];
__shared__ uint2 lastword1[RB8_NSLOTS];
__shared__ uint4 lastword2[RB8_NSLOTS];
__shared__ int ht_len[MAXPAIRS];
__shared__ u32 pairs_len;
__shared__ u32 next_pair;
const u32 threadid = threadIdx.x;
const u32 bucketid = blockIdx.x;
// reset hashtable len
if (threadid < 256)
ht_len[threadid] = 0;
else if (threadid == (THREADS - 1))
pairs_len = 0;
else if (threadid == (THREADS - 33))
next_pair = 0;
u32 bsize = umin(eq->edata.nslots0[bucketid], RB8_NSLOTS);
u32 hr[2];
int pos[2];
pos[0] = pos[1] = SSM;
uint2 ta[2];
uint4 tb[2];
u32 si[2];
// enable this to make fully safe shared mem operations;
// disabled gains some speed, but can rarely cause a crash
//__syncthreads();
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
si[i] = i * THREADS + threadid;
if (si[i] >= bsize) break;
const slot* pslot1 = eq->round0trees[bucketid] + si[i];
// get xhash
uint4 a1 = *(uint4*)(&pslot1->hash[0]);
uint2 a2 = *(uint2*)(&pslot1->hash[4]);
ta[i].x = a1.x;
ta[i].y = a1.y;
lastword1[si[i]] = ta[i];
tb[i].x = a1.z;
tb[i].y = a1.w;
tb[i].z = a2.x;
tb[i].w = a2.y;
lastword2[si[i]] = tb[i];
asm("bfe.u32 %0, %1, 20, 8;" : "=r"(hr[i]) : "r"(ta[i].x));
pos[i] = atomicAdd(&ht_len[hr[i]], 1);
if (pos[i] < (SSM - 1)) ht[hr[i]][pos[i]] = si[i];
}
__syncthreads();
int* pairs = ht_len;
u32 xors[6];
u32 xorbucketid, xorslot;
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
if (pos[i] >= SSM) continue;
if (pos[i] > 0)
{
u16 p = ht[hr[i]][0];
*(uint2*)(&xors[0]) = ta[i] ^ lastword1[p];
asm("bfe.u32 %0, %1, %2, %3;" : "=r"(xorbucketid) : "r"(xors[0]), "r"(RB), "r"(BUCKBITS));
xorslot = atomicAdd(&eq->edata.nslots[1][xorbucketid], 1);
if (xorslot < NSLOTS)
{
*(uint4*)(&xors[2]) = lastword2[si[i]] ^ lastword2[p];
slot &xs = eq->trees[0][xorbucketid][xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[1]);
uint4 ttx;
ttx.x = xors[5];
ttx.y = xors[0];
ttx.z = packer_default::set_bucketid_and_slots(bucketid, si[i], p, 8, RB8_NSLOTS);
ttx.w = 0;
*(uint4*)(&xs.hash[4]) = ttx;
}
for (int k = 1; k != pos[i]; ++k)
{
u32 pindex = atomicAdd(&pairs_len, 1);
if (pindex >= MAXPAIRS) break;
u16 prev = ht[hr[i]][k];
pairs[pindex] = __byte_perm(si[i], prev, 0x1054);
}
}
}
__syncthreads();
// process pairs
u32 plen = umin(pairs_len, MAXPAIRS);
u32 i, k;
for (u32 s = atomicAdd(&next_pair, 1); s < plen; s = atomicAdd(&next_pair, 1))
{
int pair = pairs[s];
i = __byte_perm(pair, 0, 0x4510);
k = __byte_perm(pair, 0, 0x4532);
*(uint2*)(&xors[0]) = lastword1[i] ^ lastword1[k];
asm("bfe.u32 %0, %1, %2, %3;" : "=r"(xorbucketid) : "r"(xors[0]), "r"(RB), "r"(BUCKBITS));
xorslot = atomicAdd(&eq->edata.nslots[1][xorbucketid], 1);
if (xorslot < NSLOTS)
{
*(uint4*)(&xors[2]) = lastword2[i] ^ lastword2[k];
slot &xs = eq->trees[0][xorbucketid][xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[1]);
uint4 ttx;
ttx.x = xors[5];
ttx.y = xors[0];
ttx.z = packer_default::set_bucketid_and_slots(bucketid, i, k, 8, RB8_NSLOTS);
ttx.w = 0;
*(uint4*)(&xs.hash[4]) = ttx;
}
}
}
template <u32 RB, u32 SM, int SSM, typename PACKER, u32 MAXPAIRS, u32 THREADS>
__global__ void digit_2(equi<RB, SM>* eq)
{
__shared__ u16 ht[NRESTS][SSM - 1];
__shared__ u32 lastword1[NSLOTS];
__shared__ uint4 lastword2[NSLOTS];
__shared__ int ht_len[NRESTS];
__shared__ int pairs[MAXPAIRS];
__shared__ u32 pairs_len;
__shared__ u32 next_pair;
const u32 threadid = threadIdx.x;
const u32 bucketid = blockIdx.x;
// reset hashtable len
if (threadid < NRESTS)
ht_len[threadid] = 0;
else if (threadid == (THREADS - 1))
pairs_len = 0;
else if (threadid == (THREADS - 33))
next_pair = 0;
slot* buck = eq->trees[0][bucketid];
u32 bsize = umin(eq->edata.nslots[1][bucketid], NSLOTS);
u32 hr[2];
int pos[2];
pos[0] = pos[1] = SSM;
u32 ta[2];
uint4 tt[2];
u32 si[2];
// enable this to make fully safe shared mem operations;
// disabled gains some speed, but can rarely cause a crash
//__syncthreads();
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
si[i] = i * THREADS + threadid;
if (si[i] >= bsize) break;
// get slot
const slot* pslot1 = buck + si[i];
uint4 ttx = *(uint4*)(&pslot1->hash[0]);
lastword1[si[i]] = ta[i] = ttx.x;
uint2 tty = *(uint2*)(&pslot1->hash[4]);
tt[i].x = ttx.y;
tt[i].y = ttx.z;
tt[i].z = ttx.w;
tt[i].w = tty.x;
lastword2[si[i]] = tt[i];
hr[i] = tty.y & RESTMASK;
pos[i] = atomicAdd(&ht_len[hr[i]], 1);
if (pos[i] < (SSM - 1)) ht[hr[i]][pos[i]] = si[i];
}
__syncthreads();
u32 xors[5];
u32 xorbucketid, xorslot;
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
if (pos[i] >= SSM) continue;
if (pos[i] > 0)
{
u16 p = ht[hr[i]][0];
xors[0] = ta[i] ^ lastword1[p];
xorbucketid = xors[0] >> (12 + RB);
xorslot = atomicAdd(&eq->edata.nslots[2][xorbucketid], 1);
if (xorslot < NSLOTS)
{
*(uint4*)(&xors[1]) = tt[i] ^ lastword2[p];
slotsmall &xs = eq->round2trees[xorbucketid].treessmall[xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[0]);
slottiny &xst = eq->round2trees[xorbucketid].treestiny[xorslot];
uint2 ttx;
ttx.x = xors[4];
ttx.y = PACKER::set_bucketid_and_slots(bucketid, si[i], p, RB, SM);
*(uint2*)(&xst.hash[0]) = ttx;
}
for (int k = 1; k != pos[i]; ++k)
{
u32 pindex = atomicAdd(&pairs_len, 1);
if (pindex >= MAXPAIRS) break;
u16 prev = ht[hr[i]][k];
pairs[pindex] = __byte_perm(si[i], prev, 0x1054);
}
}
}
__syncthreads();
// process pairs
u32 plen = umin(pairs_len, MAXPAIRS);
u32 i, k;
for (u32 s = atomicAdd(&next_pair, 1); s < plen; s = atomicAdd(&next_pair, 1))
{
int pair = pairs[s];
i = __byte_perm(pair, 0, 0x4510);
k = __byte_perm(pair, 0, 0x4532);
xors[0] = lastword1[i] ^ lastword1[k];
xorbucketid = xors[0] >> (12 + RB);
xorslot = atomicAdd(&eq->edata.nslots[2][xorbucketid], 1);
if (xorslot < NSLOTS)
{
*(uint4*)(&xors[1]) = lastword2[i] ^ lastword2[k];
slotsmall &xs = eq->round2trees[xorbucketid].treessmall[xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[0]);
slottiny &xst = eq->round2trees[xorbucketid].treestiny[xorslot];
uint2 ttx;
ttx.x = xors[4];
ttx.y = PACKER::set_bucketid_and_slots(bucketid, i, k, RB, SM);
*(uint2*)(&xst.hash[0]) = ttx;
}
}
}
template <u32 RB, u32 SM, int SSM, typename PACKER, u32 MAXPAIRS, u32 THREADS>
__global__ void digit_3(equi<RB, SM>* eq)
{
__shared__ u16 ht[NRESTS][(SSM - 1)];
__shared__ uint4 lastword1[NSLOTS];
__shared__ u32 lastword2[NSLOTS];
__shared__ int ht_len[NRESTS];
__shared__ int pairs[MAXPAIRS];
__shared__ u32 pairs_len;
__shared__ u32 next_pair;
const u32 threadid = threadIdx.x;
const u32 bucketid = blockIdx.x;
// reset hashtable len
if (threadid < NRESTS)
ht_len[threadid] = 0;
else if (threadid == (THREADS - 1))
pairs_len = 0;
else if (threadid == (THREADS - 33))
next_pair = 0;
u32 bsize = umin(eq->edata.nslots[2][bucketid], NSLOTS);
u32 hr[2];
int pos[2];
pos[0] = pos[1] = SSM;
u32 si[2];
uint4 tt[2];
u32 ta[2];
// enable this to make fully safe shared mem operations;
// disabled gains some speed, but can rarely cause a crash
//__syncthreads();
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
si[i] = i * THREADS + threadid;
if (si[i] >= bsize) break;
slotsmall &xs = eq->round2trees[bucketid].treessmall[si[i]];
slottiny &xst = eq->round2trees[bucketid].treestiny[si[i]];
tt[i] = *(uint4*)(&xs.hash[0]);
lastword1[si[i]] = tt[i];
ta[i] = xst.hash[0];
lastword2[si[i]] = ta[i];
asm("bfe.u32 %0, %1, 12, %2;" : "=r"(hr[i]) : "r"(tt[i].x), "r"(RB));
pos[i] = atomicAdd(&ht_len[hr[i]], 1);
if (pos[i] < (SSM - 1)) ht[hr[i]][pos[i]] = si[i];
}
__syncthreads();
u32 xors[5];
u32 bexor, xorbucketid, xorslot;
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
if (pos[i] >= SSM) continue;
if (pos[i] > 0)
{
u16 p = ht[hr[i]][0];
xors[4] = ta[i] ^ lastword2[p];
if (xors[4] != 0)
{
*(uint4*)(&xors[0]) = tt[i] ^ lastword1[p];
bexor = __byte_perm(xors[0], xors[1], 0x2107);
asm("bfe.u32 %0, %1, %2, %3;" : "=r"(xorbucketid) : "r"(bexor), "r"(RB), "r"(BUCKBITS));
xorslot = atomicAdd(&eq->edata.nslots[3][xorbucketid], 1);
if (xorslot < NSLOTS)
{
slotsmall &xs = eq->round3trees[xorbucketid].treessmall[xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[1]);
slottiny &xst = eq->round3trees[xorbucketid].treestiny[xorslot];
uint2 ttx;
ttx.x = bexor;
ttx.y = PACKER::set_bucketid_and_slots(bucketid, si[i], p, RB, SM);
*(uint2*)(&xst.hash[0]) = ttx;
}
}
for (int k = 1; k != pos[i]; ++k)
{
u32 pindex = atomicAdd(&pairs_len, 1);
if (pindex >= MAXPAIRS) break;
u16 prev = ht[hr[i]][k];
pairs[pindex] = __byte_perm(si[i], prev, 0x1054);
}
}
}
__syncthreads();
// process pairs
u32 plen = umin(pairs_len, MAXPAIRS);
u32 i, k;
for (u32 s = atomicAdd(&next_pair, 1); s < plen; s = atomicAdd(&next_pair, 1))
{
int pair = pairs[s];
i = __byte_perm(pair, 0, 0x4510);
k = __byte_perm(pair, 0, 0x4532);
xors[4] = lastword2[i] ^ lastword2[k];
if (xors[4] != 0)
{
*(uint4*)(&xors[0]) = lastword1[i] ^ lastword1[k];
bexor = __byte_perm(xors[0], xors[1], 0x2107);
asm("bfe.u32 %0, %1, %2, %3;" : "=r"(xorbucketid) : "r"(bexor), "r"(RB), "r"(BUCKBITS));
xorslot = atomicAdd(&eq->edata.nslots[3][xorbucketid], 1);
if (xorslot < NSLOTS)
{
slotsmall &xs = eq->round3trees[xorbucketid].treessmall[xorslot];
*(uint4*)(&xs.hash[0]) = *(uint4*)(&xors[1]);
slottiny &xst = eq->round3trees[xorbucketid].treestiny[xorslot];
uint2 ttx;
ttx.x = bexor;
ttx.y = PACKER::set_bucketid_and_slots(bucketid, i, k, RB, SM);
*(uint2*)(&xst.hash[0]) = ttx;
}
}
}
}
template <u32 RB, u32 SM, int SSM, typename PACKER, u32 MAXPAIRS, u32 THREADS>
__global__ void digit_4(equi<RB, SM>* eq)
{
__shared__ u16 ht[NRESTS][(SSM - 1)];
__shared__ uint4 lastword[NSLOTS];
__shared__ int ht_len[NRESTS];
__shared__ int pairs[MAXPAIRS];
__shared__ u32 pairs_len;
__shared__ u32 next_pair;
const u32 threadid = threadIdx.x;
const u32 bucketid = blockIdx.x;
// reset hashtable len
if (threadid < NRESTS)
ht_len[threadid] = 0;
else if (threadid == (THREADS - 1))
pairs_len = 0;
else if (threadid == (THREADS - 33))
next_pair = 0;
u32 bsize = umin(eq->edata.nslots[3][bucketid], NSLOTS);
u32 hr[2];
int pos[2];
pos[0] = pos[1] = SSM;
u32 si[2];
uint4 tt[2];
// enable this to make fully safe shared mem operations;
// disabled gains some speed, but can rarely cause a crash
//__syncthreads();
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
si[i] = i * THREADS + threadid;
if (si[i] >= bsize) break;
slotsmall &xs = eq->round3trees[bucketid].treessmall[si[i]];
slottiny &xst = eq->round3trees[bucketid].treestiny[si[i]];
// get xhash
tt[i] = *(uint4*)(&xs.hash[0]);
lastword[si[i]] = tt[i];
hr[i] = xst.hash[0] & RESTMASK;
pos[i] = atomicAdd(&ht_len[hr[i]], 1);
if (pos[i] < (SSM - 1)) ht[hr[i]][pos[i]] = si[i];
}
__syncthreads();
u32 xors[4];
u32 xorbucketid, xorslot;
#pragma unroll
for (u32 i = 0; i != 2; ++i)
{
if (pos[i] >= SSM) continue;
if (pos[i] > 0)
{
u16 p = ht[hr[i]][0];
*(uint4*)(&xors[0]) = tt[i] ^ lastword[p];
if (xors[3] != 0)
{
asm("bfe.u32 %0, %1, %2, %3;" : "=r"(xorbucketid) : "r"(xors[0]), "r"(4 + RB), "r"(BUCKBITS));