File size: 7,695 Bytes
3ce1a40 | 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 | #include "compute.h"
#include "../core/core.h"
#include "../serialization/stream.h"
#include <cstring>
namespace unify {
ComputeRuntime::ComputeRuntime(uint32_t initial_pages, uint32_t max_pages) : memory_(std::make_shared<wasm::Memory>()) {
memory_->max_pages = max_pages;
memory_->bytes.assign(size_t(initial_pages) * wasm::Memory::kPage, 0);
alloc_.reset(kReserved, uint32_t(memory_->bytes.size()) - kReserved);
}
bool ComputeRuntime::grow_to_fit(uint32_t bytes) {
uint32_t need_pages = (bytes + wasm::Memory::kPage - 1) / wasm::Memory::kPage + 1;
if (memory_->grow(need_pages) < 0) return false;
alloc_.extend(uint32_t(memory_->bytes.size()));
return true;
}
BufferHandle ComputeRuntime::buffer_create(uint32_t bytes) {
uint32_t off = alloc_.allocate(bytes, 16);
if (off == BufferAllocator::kFail) {
if (!grow_to_fit(bytes)) { UNIFY_LOG_ERROR("COMPUTE", "out of kernel memory (%u bytes requested)", bytes); return {}; }
off = alloc_.allocate(bytes, 16);
if (off == BufferAllocator::kFail) return {};
}
std::memset(memory_->bytes.data() + off, 0, bytes);
BufferHandle h = buffers_.allocate();
if (h.index() >= buf_.size()) buf_.resize(h.index() + 1);
buf_[h.index()] = {off, bytes};
return h;
}
bool ComputeRuntime::buffer_destroy(BufferHandle h) {
if (!buffers_.valid(h)) return false;
alloc_.free(buf_[h.index()].offset);
buf_[h.index()] = {};
return buffers_.release(h);
}
bool ComputeRuntime::buffer_upload(BufferHandle h, const void* data, uint32_t bytes, uint32_t offset) {
if (!buffers_.valid(h)) return false;
const Buf& b = buf_[h.index()];
if (uint64_t(offset) + bytes > b.size) return false;
std::memcpy(memory_->bytes.data() + b.offset + offset, data, bytes);
return true;
}
bool ComputeRuntime::buffer_download(BufferHandle h, void* out, uint32_t bytes, uint32_t offset) const {
if (!buffers_.valid(h)) return false;
const Buf& b = buf_[h.index()];
if (uint64_t(offset) + bytes > b.size) return false;
std::memcpy(out, memory_->bytes.data() + b.offset + offset, bytes);
return true;
}
uint32_t ComputeRuntime::buffer_size(BufferHandle h) const { return buffers_.valid(h) ? buf_[h.index()].size : 0; }
KernelHandle ComputeRuntime::load(const kernel::CompiledKernel& k, const std::string& source, std::string& error) {
if (!k.ok) { error = k.error; return {}; }
auto module = std::make_shared<wasm::Module>();
if (!wasm::decode(k.wasm, *module, error)) return {};
auto inst = std::make_shared<wasm::Instance>();
if (!inst->instantiate(module, memory_, {}, error)) return {};
KernelHandle h = kernels_.allocate();
if (h.index() >= kern_.size()) kern_.resize(h.index() + 1);
kern_[h.index()] = {source, k, inst};
return h;
}
KernelHandle ComputeRuntime::compile_and_load(const std::string& source, std::string& error) {
kernel::CompiledKernel k = compile(source);
if (!k.ok) { error = k.error; return {}; }
return load(k, source, error);
}
bool ComputeRuntime::unload(KernelHandle h) {
if (!kernels_.valid(h)) return false;
kern_[h.index()] = {};
return kernels_.release(h);
}
const kernel::CompiledKernel* ComputeRuntime::kernel_info(KernelHandle h) const {
return kernels_.valid(h) ? &kern_[h.index()].compiled : nullptr;
}
DispatchResult ComputeRuntime::dispatch(KernelHandle h, uint32_t grid, uint32_t block, const std::vector<KernelArg>& args) {
DispatchResult r;
if (!kernels_.valid(h)) { r.ok = false; r.error = "invalid kernel handle"; return r; }
Kern& k = kern_[h.index()];
const auto& params = k.compiled.params;
if (args.size() != params.size()) {
r.ok = false;
r.error = k.compiled.name + " expects " + std::to_string(params.size()) + " arguments, got " + std::to_string(args.size());
return r;
}
std::vector<wasm::Value> wargs = {wasm::Value::i32(int32_t(grid)), wasm::Value::i32(int32_t(block))};
for (size_t i = 0; i < args.size(); i++) {
const KernelArg& a = args[i];
kernel::Type t = params[i].type;
bool is_ptr = t == kernel::Type::IntPtr || t == kernel::Type::FloatPtr;
if (is_ptr) {
if (a.kind != KernelArg::Buffer || !buffers_.valid(BufferHandle{a.buffer})) {
r.ok = false; r.error = "argument '" + params[i].name + "' must be a valid buffer"; return r;
}
wargs.push_back(wasm::Value::i32(int32_t(buf_[BufferHandle{a.buffer}.index()].offset)));
} else if (t == kernel::Type::Int) {
wargs.push_back(wasm::Value::i32(a.kind == KernelArg::Float ? int32_t(a.f) : a.i));
} else {
wargs.push_back(wasm::Value::f32(a.kind == KernelArg::Int ? float(a.i) : a.f));
}
}
wasm::ExecResult x = k.instance->call(k.compiled.name + "__dispatch", wargs);
r.ok = x.ok;
r.error = x.trap;
r.instructions = x.instructions;
return r;
}
void ComputeRuntime::serialize(BinaryWriter& w) const {
w.u32(memory_->pages());
auto bs = buffers_.save();
w.u32(uint32_t(bs.gens.size()));
for (size_t i = 0; i < bs.gens.size(); i++) {
w.u8(bs.gens[i]); w.u8(bs.live[i]);
if (bs.live[i]) {
const Buf& b = buf_[i];
w.u32(b.offset); w.u32(b.size);
w.bytes(memory_->bytes.data() + b.offset, b.size); // only live buffer contents, not the whole memory
}
}
w.u32(uint32_t(bs.free.size()));
for (uint32_t f : bs.free) w.u32(f);
auto ks = kernels_.save();
w.u32(uint32_t(ks.gens.size()));
for (size_t i = 0; i < ks.gens.size(); i++) {
w.u8(ks.gens[i]); w.u8(ks.live[i]);
if (ks.live[i]) w.str(kern_[i].source); // kernels are rebuilt from source on load
}
w.u32(uint32_t(ks.free.size()));
for (uint32_t f : ks.free) w.u32(f);
}
bool ComputeRuntime::deserialize(BinaryReader& r, std::string& error) {
uint32_t pages = r.u32();
memory_->bytes.assign(size_t(pages) * wasm::Memory::kPage, 0);
HandlePool<BufferHandle>::State bs;
uint32_t n = r.u32();
bs.gens.resize(n); bs.live.resize(n);
buf_.assign(n, Buf{});
std::map<uint32_t, uint32_t> used;
for (uint32_t i = 0; i < n; i++) {
bs.gens[i] = r.u8(); bs.live[i] = r.u8();
if (!bs.live[i]) continue;
bs.alive++;
Buf b{r.u32(), r.u32()};
if (uint64_t(b.offset) + b.size > memory_->bytes.size()) { error = "buffer out of range in save state"; return false; }
r.bytes(memory_->bytes.data() + b.offset, b.size);
buf_[i] = b;
used[b.offset] = b.size;
}
bs.free.resize(r.u32());
for (auto& f : bs.free) f = r.u32();
buffers_.load(bs);
alloc_.restore(used, kReserved, uint32_t(memory_->bytes.size()));
HandlePool<KernelHandle>::State ks;
uint32_t nk = r.u32();
ks.gens.resize(nk); ks.live.resize(nk);
kern_.assign(nk, Kern{});
for (uint32_t i = 0; i < nk; i++) {
ks.gens[i] = r.u8(); ks.live[i] = r.u8();
if (!ks.live[i]) continue;
ks.alive++;
std::string src = r.str();
kernel::CompiledKernel k = compile(src);
if (!k.ok) { error = "kernel failed to recompile: " + k.error; return false; }
auto module = std::make_shared<wasm::Module>();
if (!wasm::decode(k.wasm, *module, error)) return false;
auto inst = std::make_shared<wasm::Instance>();
if (!inst->instantiate(module, memory_, {}, error)) return false;
kern_[i] = {src, k, inst};
}
ks.free.resize(r.u32());
for (auto& f : ks.free) f = r.u32();
kernels_.load(ks);
return true;
}
} // namespace unify
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