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66c9c8a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 | #pragma once
#include "builtin.h"
namespace wp
{
struct fabricbucket_t
{
size_t index_start;
size_t index_end;
void* ptr;
size_t* lengths;
};
template <typename T>
struct fabricarray_t
{
CUDA_CALLABLE inline fabricarray_t() {}
CUDA_CALLABLE inline fabricarray_t(int) {} // for backward a = 0 initialization syntax
CUDA_CALLABLE inline bool empty() const { return !size; }
fabricbucket_t* buckets; // array of fabricbucket_t on the correct device
size_t nbuckets;
size_t size;
};
template <typename T>
struct indexedfabricarray_t
{
CUDA_CALLABLE inline indexedfabricarray_t() {}
CUDA_CALLABLE inline indexedfabricarray_t(int) {} // for backward a = 0 initialization syntax
CUDA_CALLABLE inline bool empty() const { return !size; }
fabricarray_t<T> fa;
// TODO: we use 32-bit indices for consistency with other Warp indexed arrays,
// but Fabric uses 64-bit indexing.
int* indices;
size_t size;
};
#ifndef FABRICARRAY_USE_BINARY_SEARCH
#define FABRICARRAY_USE_BINARY_SEARCH 1
#endif
template <typename T>
CUDA_CALLABLE inline const fabricbucket_t* fabricarray_find_bucket(const fabricarray_t<T>& fa, size_t i)
{
#if FABRICARRAY_USE_BINARY_SEARCH
// use binary search to find the right bucket
const fabricbucket_t* bucket = nullptr;
size_t lo = 0;
size_t hi = fa.nbuckets - 1;
while (hi >= lo)
{
size_t mid = (lo + hi) >> 1;
bucket = fa.buckets + mid;
if (i >= bucket->index_end)
lo = mid + 1;
else if (i < bucket->index_start)
hi = mid - 1;
else
return bucket;
}
return nullptr;
#else
// use linear search to find the right bucket
const fabricbucket_t* bucket = fa.buckets;
const fabricbucket_t* bucket_end = bucket + fa.nbuckets;
for (; bucket < bucket_end; ++bucket)
{
if (i < bucket->index_end)
return bucket;
}
return nullptr;
#endif
}
// Compute the pointer to a fabricarray element at index i.
// This function is similar to wp::index(), but the array data type doesn't need to be known at compile time.
CUDA_CALLABLE inline void* fabricarray_element_ptr(const fabricarray_t<void>& fa, size_t i, size_t elem_size)
{
const fabricbucket_t* bucket = fabricarray_find_bucket(fa, i);
size_t index_in_bucket = i - bucket->index_start;
return (char*)bucket->ptr + index_in_bucket * elem_size;
}
template <typename T>
CUDA_CALLABLE inline T& index(const fabricarray_t<T>& fa, size_t i)
{
const fabricbucket_t* bucket = fabricarray_find_bucket(fa, i);
assert(bucket && "Fabric array index out of range");
size_t index_in_bucket = i - bucket->index_start;
T& result = *((T*)bucket->ptr + index_in_bucket);
FP_VERIFY_FWD_1(result)
return result;
}
// indexing for fabric array of arrays
template <typename T>
CUDA_CALLABLE inline T& index(const fabricarray_t<T>& fa, size_t i, size_t j)
{
const fabricbucket_t* bucket = fabricarray_find_bucket(fa, i);
assert(bucket && "Fabric array index out of range");
assert(bucket->lengths && "Missing inner array lengths");
size_t index_in_bucket = i - bucket->index_start;
void* ptr = *((void**)bucket->ptr + index_in_bucket);
size_t length = *((size_t*)bucket->lengths + index_in_bucket);
assert(j < length && "Fabric array inner index out of range");
T& result = *((T*)ptr + j);
FP_VERIFY_FWD_1(result)
return result;
}
template <typename T>
CUDA_CALLABLE inline array_t<T> view(fabricarray_t<T>& fa, size_t i)
{
const fabricbucket_t* bucket = fabricarray_find_bucket(fa, i);
assert(bucket && "Fabric array index out of range");
assert(bucket->lengths && "Missing inner array lengths");
size_t index_in_bucket = i - bucket->index_start;
void* ptr = *((void**)bucket->ptr + index_in_bucket);
size_t length = *((size_t*)bucket->lengths + index_in_bucket);
return array_t<T>((T*)ptr, int(length));
}
template <typename T>
CUDA_CALLABLE inline T& index(const indexedfabricarray_t<T>& ifa, size_t i)
{
// index lookup
assert(i < ifa.size);
i = size_t(ifa.indices[i]);
const fabricbucket_t* bucket = fabricarray_find_bucket(ifa.fa, i);
assert(bucket && "Fabric array index out of range");
size_t index_in_bucket = i - bucket->index_start;
T& result = *((T*)bucket->ptr + index_in_bucket);
FP_VERIFY_FWD_1(result)
return result;
}
// indexing for fabric array of arrays
template <typename T>
CUDA_CALLABLE inline T& index(const indexedfabricarray_t<T>& ifa, size_t i, size_t j)
{
// index lookup
assert(i < ifa.size);
i = size_t(ifa.indices[i]);
const fabricbucket_t* bucket = fabricarray_find_bucket(ifa.fa, i);
assert(bucket && "Fabric array index out of range");
assert(bucket->lengths && "Missing inner array lengths");
size_t index_in_bucket = i - bucket->index_start;
void* ptr = *((void**)bucket->ptr + index_in_bucket);
size_t length = *((size_t*)bucket->lengths + index_in_bucket);
assert(j < length && "Fabric array inner index out of range");
T& result = *((T*)ptr + j);
FP_VERIFY_FWD_1(result)
return result;
}
template <typename T>
CUDA_CALLABLE inline array_t<T> view(indexedfabricarray_t<T>& ifa, size_t i)
{
// index lookup
assert(i < ifa.size);
i = size_t(ifa.indices[i]);
const fabricbucket_t* bucket = fabricarray_find_bucket(ifa.fa, i);
assert(bucket && "Fabric array index out of range");
assert(bucket->lengths && "Missing inner array lengths");
size_t index_in_bucket = i - bucket->index_start;
void* ptr = *((void**)bucket->ptr + index_in_bucket);
size_t length = *((size_t*)bucket->lengths + index_in_bucket);
return array_t<T>((T*)ptr, int(length));
}
} // namespace wp
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