mirror of
https://github.com/matrix-construct/construct
synced 2024-11-17 23:40:57 +01:00
1019 lines
21 KiB
C++
1019 lines
21 KiB
C++
// Matrix Construct Is All You Need Is All You Need Is AllĊĊĊĊĊĊĊĊ
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2021 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
namespace ircd::gpt
|
|
{
|
|
static size_t adamw(f32x4 &, f32x4 &, f32x4 &, const f32, const f32, const f32, const f32, const u32, size_t);
|
|
static size_t adamw(task &, const f32, f32 *, const size_t, f32 *const (&)[2], const size_t);
|
|
|
|
static size_t backprop(task &, const f32, model::norm &, f32 *const (&)[2], size_t);
|
|
static size_t backprop(task &, const f32, model::attn &, f32 *const (&)[2], size_t);
|
|
static size_t backprop(task &, const f32, model::ffnn &, f32 *const (&)[2], size_t);
|
|
static size_t backprop(task &, const f32, model::block &, f32 *const (&)[2], size_t);
|
|
static size_t backprop(task &, const f32, model::embed &, f32 *const (&)[2], size_t);
|
|
static size_t backprop(task &, const f32, model::decoder &, f32 *const (&)[2], size_t = 0);
|
|
|
|
template<class T>
|
|
static void fmma(T *out, const T *in, const T *bias, const T *weight, const math::fmma_opts &);
|
|
|
|
static void gelu(f32x4 &, const f32x4 &);
|
|
static void gelu(f32x4 *, const f32x4 *);
|
|
static void norm(f32x4 *, const f32x4 *, const f32x4 *, const f32x4 *, const f32);
|
|
static void vals(float (&)[12][1024][64], const float (&)[12][1024][1024], const float (&)[3][1024][12][64], const size_t);
|
|
static void pare(float (&)[12][1024][1024], const float (&)[3][1024][12][64], const size_t);
|
|
static void mask(float (&)[12][1024][1024], const float (&)[12][1024][1024], const bool (&)[1024][1024], const size_t);
|
|
static void smax(float (&)[12][1024][1024], const float (&)[12][1024][1024], const size_t);
|
|
static void ctrl(float (&)[3][1024][12][64], const float *const, const size_t, const model::decoder &, const uint layer);
|
|
static void ffnn(float *, const float *, const model::decoder &, const uint layer);
|
|
static void coil(float *, const size_t, const model::decoder &);
|
|
static void logitsmax(float *, const float *, const size_t);
|
|
static void logits(float *, const float *, const model::decoder &);
|
|
static void tail(float *, const float *, const model::decoder &);
|
|
static u16 argmax(const float *, const opts &);
|
|
static void embed(float *, const u16 token, const u16 position, const opts &);
|
|
|
|
static void generate_debug(task &, const uint &, const uint &);
|
|
|
|
static f32
|
|
logit alignas(64) [65536],
|
|
embeds alignas(64) [1024 * 768],
|
|
scratch alignas(64) [1024 * 768];
|
|
}
|
|
|
|
decltype(ircd::gpt::log)
|
|
ircd::gpt::log
|
|
{
|
|
"gpt"
|
|
};
|
|
|
|
ircd::string_view
|
|
ircd::gpt::generate(const mutable_buffer &out,
|
|
const string_view &in,
|
|
task &task)
|
|
{
|
|
u16 buf[2][1024];
|
|
const auto input_tokens
|
|
{
|
|
vocab::tokenize(buf[0], in)
|
|
};
|
|
|
|
const auto output_tokens
|
|
{
|
|
generate(buf[1], input_tokens, task)
|
|
};
|
|
|
|
const auto output
|
|
{
|
|
vocab::detokenize(out, output_tokens)
|
|
};
|
|
|
|
return output;
|
|
}
|
|
|
|
ircd::vector_view<ircd::u16>
|
|
ircd::gpt::generate(const vector_view<u16> &out,
|
|
const vector_view<const u16> &in,
|
|
task &task)
|
|
{
|
|
assert(task.ctrl);
|
|
assert(task.opts);
|
|
|
|
uint ret(0);
|
|
bool halt(false);
|
|
|
|
const auto &opts(*task.opts);
|
|
auto &ctrl(*task.ctrl);
|
|
ctrl.tokens.count = 0;
|
|
ctrl.tokens.head = 0;
|
|
|
|
uint j(0);
|
|
for(uint i(0); i < opts.gates; ++i)
|
|
{
|
|
const auto &gate
|
|
{
|
|
opts.gate[i]
|
|
};
|
|
|
|
while(j < in.size() && j < gate.offset && ctrl.tokens.count < opts.buffer_tokens)
|
|
ctrl.token[ctrl.tokens.count++] = in[j++];
|
|
|
|
for(uint k(0); k < 7; ++k)
|
|
{
|
|
if(ctrl.tokens.count >= opts.buffer_tokens)
|
|
break;
|
|
|
|
if(gate.code[k] == 0)
|
|
break;
|
|
|
|
ctrl.token[ctrl.tokens.count++] = gate.code[k];
|
|
}
|
|
}
|
|
|
|
while(j < in.size() && ctrl.tokens.count < opts.buffer_tokens)
|
|
ctrl.token[ctrl.tokens.count++] = in[j++];
|
|
|
|
const size_t in_size
|
|
{
|
|
ctrl.tokens.count
|
|
};
|
|
|
|
generate(task);
|
|
|
|
for(uint i(0); i < ctrl.tokens.count && ret < out.size() && !halt; ++i)
|
|
{
|
|
const auto j
|
|
{
|
|
(i + ctrl.tokens.head) % opts.buffer_tokens
|
|
};
|
|
|
|
const auto tok
|
|
{
|
|
ctrl.token[j]
|
|
};
|
|
|
|
if(j >= in_size)
|
|
out[ret++] = tok;
|
|
|
|
if(likely(~opts.debug & 0x01))
|
|
continue;
|
|
|
|
if(likely(~opts.debug & 0x02))
|
|
if(j < in_size)
|
|
continue;
|
|
|
|
generate_debug(task, j, in_size);
|
|
}
|
|
|
|
ctx::interruption_point();
|
|
return vector_view<u16>
|
|
{
|
|
out, ret
|
|
};
|
|
}
|
|
|
|
void
|
|
ircd::gpt::generate(task &task)
|
|
{
|
|
const auto &opts(*task.opts);
|
|
auto &ctrl(*task.ctrl);
|
|
|
|
const size_t in_size
|
|
{
|
|
ctrl.tokens.count
|
|
};
|
|
|
|
uint64_t cycles(0);
|
|
if(ctrl.prop)
|
|
{
|
|
static f32 *_momentum[2];
|
|
if(!_momentum[0])
|
|
{
|
|
_momentum[0] = new f32[sizeof(model::decoder) / 4] {0.0f};
|
|
_momentum[1] = new f32[sizeof(model::decoder) / 4] {0.0f};
|
|
}
|
|
|
|
f32 *const momentum[2]
|
|
{
|
|
_momentum[0], _momentum[1],
|
|
};
|
|
|
|
const prof::scope_cycles task_cycles
|
|
{
|
|
cycles
|
|
};
|
|
|
|
backprop(task, ctrl.loss.mean, *model::default_model, momentum);
|
|
}
|
|
|
|
if(ctrl.prop)
|
|
{
|
|
log::debug
|
|
{
|
|
log, "Backpropagation of %2.6f in %lu cycles.",
|
|
ctrl.loss.mean,
|
|
cycles,
|
|
};
|
|
|
|
ctrl.epic.epoch = 0;
|
|
ctrl.loss.mean = 0;
|
|
ctrl.loss.last = ctrl.loss.mean;
|
|
ctrl.perp.mean = 0;
|
|
ctrl.perp.last = ctrl.perp.mean;
|
|
ctrl.cert.mean = 0;
|
|
ctrl.cert.last = ctrl.cert.mean;
|
|
ctrl.prop = false;
|
|
pipe::default_model->invalid = true;
|
|
return;
|
|
}
|
|
|
|
cycles = 0;
|
|
util::timer stopwatch;
|
|
{
|
|
const prof::scope_cycles task_cycles
|
|
{
|
|
cycles
|
|
};
|
|
|
|
pipe::generate(task);
|
|
}
|
|
|
|
const milliseconds last_time
|
|
{
|
|
stopwatch.at<milliseconds>()
|
|
};
|
|
|
|
ctrl.epic.elapsed += last_time.count();
|
|
}
|
|
|
|
void
|
|
ircd::gpt::generate_debug(task &task,
|
|
const uint &i,
|
|
const uint &in_size)
|
|
{
|
|
const auto &opts(*task.opts);
|
|
auto &ctrl(*task.ctrl);
|
|
|
|
const auto j
|
|
{
|
|
(i + ctrl.tokens.head) % opts.buffer_tokens
|
|
};
|
|
|
|
const auto tok
|
|
{
|
|
ctrl.token[j]
|
|
};
|
|
|
|
static char dbuf[512];
|
|
static char report[1536];
|
|
static char tmbuf[4][64];
|
|
const size_t bsz(ctrl.tokens.count - in_size);
|
|
const size_t report_size = snprintf
|
|
(
|
|
report, sizeof(report),
|
|
"%-3u %-4u %4lu:%-4lu %6.1f%% %5.1fP %6.3fL [%c%c%c] %5u %6.3fL %6.2fP %5.1f%% %s %04x %8s %8s | %8s",
|
|
j,
|
|
ctrl.tokens.count,
|
|
ctrl.epic.epoch,
|
|
ctrl.epic.cycle,
|
|
std::clamp(ctrl.cert.mean * 100.0f, 0.0f, 100.0f),
|
|
std::clamp(ctrl.perp.mean, 0.0f, 100.0f),
|
|
std::clamp(ctrl.loss.mean, 0.0f, 99.99f),
|
|
opts.label == tok? '+': ' ',
|
|
' ', // flag place
|
|
' ', // flag place
|
|
opts.label,
|
|
std::clamp(ctrl.loss.last, 0.0f, 99.99f),
|
|
std::clamp(ctrl.perp.last, 0.0f, 100.0f),
|
|
std::clamp(ctrl.cert.last * 100.0f, 0.0f, 100.0f),
|
|
vocab::debug(dbuf, tok).c_str(),
|
|
tok,
|
|
pretty(tmbuf[0], milliseconds(0ms / bsz), 1).c_str(),
|
|
pretty(tmbuf[1], si(0UL / bsz), 1).c_str(),
|
|
pretty(tmbuf[2], milliseconds(ctrl.epic.elapsed), 1).c_str()
|
|
);
|
|
|
|
log::logf
|
|
{
|
|
log, log::level::DEBUG,
|
|
"%s",
|
|
string_view{report, report_size}
|
|
};
|
|
}
|
|
|
|
void
|
|
ircd::gpt::embed(float *const out,
|
|
const u16 token,
|
|
const u16 position,
|
|
const opts &opts)
|
|
{
|
|
assert(opts.model);
|
|
const auto &wpe
|
|
{
|
|
opts.model->word.pos[position]
|
|
};
|
|
|
|
const auto &wte
|
|
{
|
|
opts.model->word.token[token]
|
|
};
|
|
|
|
for(uint j(0); j < 768; ++j)
|
|
out[j] = wte[j] + wpe[j];
|
|
}
|
|
|
|
uint16_t
|
|
ircd::gpt::argmax(const float *const __restrict__ logit,
|
|
const opts &opts)
|
|
{
|
|
static const auto max
|
|
{
|
|
32U
|
|
};
|
|
|
|
const auto top
|
|
{
|
|
std::clamp(opts.top_k, 1U, max - 1)
|
|
};
|
|
|
|
u16 best[max] {0};
|
|
for(uint j(0); j < vocab::tokens; ++j)
|
|
{
|
|
best[top] = j;
|
|
std::sort(begin(best), begin(best) + top + 1, [&logit]
|
|
(const auto &a, const auto &b)
|
|
{
|
|
return logit[a] > logit[b];
|
|
});
|
|
}
|
|
|
|
const auto x
|
|
{
|
|
top > 1?
|
|
rand::integer(0, top - 1):
|
|
0
|
|
};
|
|
|
|
return best[x];
|
|
}
|
|
|
|
[[gnu::noinline]]
|
|
void
|
|
ircd::gpt::tail(float *const __restrict__ logit,
|
|
const float *const __restrict__ state,
|
|
const model::decoder &d)
|
|
{
|
|
constexpr float lnf_epsilon
|
|
{
|
|
0.00001
|
|
};
|
|
|
|
static float
|
|
buf alignas(64) [1][768];
|
|
for(uint i(0); i < 768; ++i)
|
|
buf[0][i] = state[i];
|
|
|
|
norm((f32x4 *)buf[0], (const f32x4 *)state, (const f32x4 *)d.f.bias, (const f32x4 *)d.f.weight, lnf_epsilon);
|
|
logits(logit, buf[0], d);
|
|
//logitsmax(logit, logit, vocab::tokens);
|
|
}
|
|
|
|
void
|
|
ircd::gpt::logits(float *const __restrict__ out,
|
|
const float *const __restrict__ in,
|
|
const model::decoder &d)
|
|
{
|
|
for(uint j(0); j < vocab::tokens; ++j)
|
|
out[j] = 0;
|
|
|
|
for(uint j(0); j < vocab::tokens; ++j)
|
|
for(uint k(0); k < 768; ++k)
|
|
out[j] += in[k] * d.word.token[j][k];
|
|
}
|
|
|
|
[[gnu::noinline]]
|
|
void
|
|
ircd::gpt::logitsmax(float *const out,
|
|
const float *const in,
|
|
const size_t num)
|
|
{
|
|
static f64x4
|
|
exps alignas(4096) [2][65536 / 4];
|
|
|
|
math::smax<f32x4, f64x4>
|
|
(
|
|
{(f32x4 *)out, num / 4},
|
|
{(const f32x4 *)in, num / 4},
|
|
exps[0],
|
|
exps[1]
|
|
);
|
|
}
|
|
|
|
[[gnu::noinline]]
|
|
void
|
|
ircd::gpt::coil(float *__restrict__ accum,
|
|
const size_t tokens,
|
|
const model::decoder &decoder)
|
|
{
|
|
static float
|
|
qkv alignas(4096) [3][1024][12][64],
|
|
state alignas(4096) [12][1024][1024],
|
|
attns alignas(4096) [12][1024][64];
|
|
|
|
for(uint i(0); i < 12; ++i)
|
|
{
|
|
const auto &layer
|
|
{
|
|
decoder.layer[i]
|
|
};
|
|
|
|
ctrl(qkv, accum, tokens, decoder, i);
|
|
pare(state, qkv, tokens);
|
|
mask(state, state, layer.attn.bias, tokens);
|
|
smax(state, state, tokens);
|
|
vals(attns, state, qkv, tokens);
|
|
|
|
static f32 a alignas(64) [1024][768];
|
|
memset(a, 0x0, 768 * tokens * sizeof(float));
|
|
for(uint j(0); j < tokens; j++)
|
|
{
|
|
for(uint k(0); k < 12; k++)
|
|
for(uint l(0); l < 64; l++)
|
|
a[j][k * 64 + l] = attns[k][j][l];
|
|
}
|
|
|
|
static const math::fmma_opts fmma_opts
|
|
{
|
|
768, 768, 2U
|
|
};
|
|
|
|
for(uint j(0); j < tokens; ++j)
|
|
fmma((f32x4 *)(accum + j * 768), (const f32x4 *)(a[j]), (const f32x4 *)layer.attn.proj_bias, (const f32x4 *)layer.attn.proj_weight, fmma_opts);
|
|
|
|
for(uint j(0); j < tokens; ++j)
|
|
ffnn(accum + j * 768, accum + j * 768, decoder, i);
|
|
}
|
|
}
|
|
|
|
void
|
|
ircd::gpt::ctrl(float (&__restrict__ out)[3][1024][12][64],
|
|
const float *const __restrict__ in,
|
|
const size_t num,
|
|
const model::decoder &decoder,
|
|
const uint laynum)
|
|
{
|
|
constexpr float ln1_epsilon
|
|
{
|
|
0.00001
|
|
};
|
|
|
|
const auto &layer
|
|
{
|
|
decoder.layer[laynum]
|
|
};
|
|
|
|
float
|
|
(&__restrict__ qry)[1024][12][64] { out[0] },
|
|
(&__restrict__ key)[1024][12][64] { out[1] },
|
|
(&__restrict__ val)[1024][12][64] { out[2] };
|
|
|
|
for(uint i(0); i < num; ++i)
|
|
{
|
|
static float
|
|
buf alignas(64) [768],
|
|
proj alignas(64) [2304];
|
|
|
|
norm((f32x4 *)buf, (const f32x4 *)(in + i * 768), (const f32x4 *)layer.ln1.bias, (const f32x4 *)layer.ln1.weight, ln1_epsilon);
|
|
|
|
static const math::fmma_opts fmma_opts
|
|
{
|
|
768, 2304, 2U,
|
|
};
|
|
|
|
memset(proj, 0x0, sizeof(proj));
|
|
fmma((f32x4 *)proj, (const f32x4 *)buf, (const f32x4 *)layer.attn.attn_bias, (const f32x4 *)layer.attn.attn_weight, fmma_opts);
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < 64; ++k)
|
|
qry[i][j][k] = proj[768 * 0 + j * 64 + k];
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < 64; ++k)
|
|
key[i][j][k] = proj[768 * 1 + j * 64 + k];
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < 64; ++k)
|
|
val[i][j][k] = proj[768 * 2 + j * 64 + k];
|
|
}
|
|
}
|
|
|
|
void
|
|
ircd::gpt::pare(float (&__restrict__ out)[12][1024][1024],
|
|
const float (&__restrict__ qkv)[3][1024][12][64],
|
|
const size_t num)
|
|
{
|
|
const float
|
|
(&__restrict__ qry)[1024][12][64] { qkv[0] },
|
|
(&__restrict__ key)[1024][12][64] { qkv[1] },
|
|
(&__restrict__ val)[1024][12][64] { qkv[2] };
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < num; ++l)
|
|
out[j][k][l] = 0;
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < num; ++l)
|
|
for(uint m(0); m < 64; ++m)
|
|
out[j][k][l] += qry[k][j][m] * key[l][j][m];
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < num; ++l)
|
|
out[j][k][l] /= 8.0;
|
|
}
|
|
|
|
void
|
|
ircd::gpt::mask(float (&__restrict__ out)[12][1024][1024],
|
|
const float (&__restrict__ in)[12][1024][1024],
|
|
const bool (&__restrict__ bias)[1024][1024],
|
|
const size_t num)
|
|
{
|
|
static const float masked
|
|
{
|
|
-10000.0
|
|
};
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < num; ++l)
|
|
out[j][k][l] = bias[k][l]? in[j][k][l]: masked;
|
|
}
|
|
|
|
void
|
|
ircd::gpt::smax(float (&__restrict__ out)[12][1024][1024],
|
|
const float (&__restrict__ in)[12][1024][1024],
|
|
const size_t num)
|
|
{
|
|
static f64
|
|
tmp alignas(4096) [2][1024];
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
math::smax<f32, f64>
|
|
(
|
|
out[j][k], { in[j][k], num }, tmp[0], tmp[1]
|
|
);
|
|
}
|
|
|
|
void
|
|
ircd::gpt::vals(float (&__restrict__ out)[12][1024][64],
|
|
const float (&__restrict__ in)[12][1024][1024],
|
|
const float (&__restrict__ qkv)[3][1024][12][64],
|
|
const size_t num)
|
|
{
|
|
const float
|
|
(&__restrict__ val)[1024][12][64] { qkv[2] };
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < 64; ++l)
|
|
out[j][k][l] = 0;
|
|
|
|
#pragma clang loop unroll (disable)
|
|
for(uint j(0); j < 12; ++j)
|
|
for(uint k(0); k < num; ++k)
|
|
for(uint l(0); l < num; ++l)
|
|
for(uint m(0); m < 64; ++m)
|
|
out[j][k][m] += in[j][k][l] * val[l][j][m];
|
|
}
|
|
|
|
void
|
|
ircd::gpt::ffnn(float *const out,
|
|
const float *const in,
|
|
const model::decoder &decoder,
|
|
const uint laynum)
|
|
{
|
|
static const math::fmma_opts fmma3_opts
|
|
{
|
|
768, 3072, 2U,
|
|
};
|
|
|
|
static const math::fmma_opts fmma4_opts
|
|
{
|
|
3072, 768, 2U,
|
|
};
|
|
|
|
constexpr float ln2_epsilon
|
|
{
|
|
0.00001
|
|
};
|
|
|
|
const auto &layer
|
|
{
|
|
decoder.layer[laynum]
|
|
};
|
|
|
|
static float
|
|
buf alignas(64) [768],
|
|
buf2 alignas(64) [3072];
|
|
|
|
memset(buf2, 0x0, sizeof(buf2));
|
|
norm((f32x4 *)buf, (const f32x4 *)in, (const f32x4 *)layer.ln2.bias, (const f32x4 *)layer.ln2.weight, ln2_epsilon);
|
|
fmma((f32x4 *)buf2, (const f32x4 *)buf, (const f32x4 *)layer.ffnn.fc_bias, (const f32x4 *)layer.ffnn.fc_weight, fmma3_opts);
|
|
gelu((f32x4 *)buf2, (const f32x4 *)buf2);
|
|
fmma((f32x4 *)out, (const f32x4 *)buf2, (const f32x4 *)layer.ffnn.proj_bias, (const f32x4 *)layer.ffnn.proj_weight, fmma4_opts);
|
|
}
|
|
|
|
void
|
|
ircd::gpt::norm(f32x4 *const __restrict__ out,
|
|
const f32x4 *const __restrict__ in,
|
|
const f32x4 *const __restrict__ bias,
|
|
const f32x4 *const __restrict__ weight,
|
|
const float epsilon)
|
|
{
|
|
static f64x4
|
|
tmp alignas(64) [768 / 4];
|
|
|
|
math::norm<f32x4, f64x4>
|
|
(
|
|
{out, 192}, {in, 192}, epsilon, tmp
|
|
);
|
|
|
|
for(uint j(0); j < 768 / 4; ++j)
|
|
out[j] = out[j] * weight[j] + bias[j];
|
|
}
|
|
|
|
template<class T>
|
|
void
|
|
ircd::gpt::fmma(T *const __restrict__ out,
|
|
const T *const __restrict__ in,
|
|
const T *const __restrict__ bias,
|
|
const T *const __restrict__ weight,
|
|
const math::fmma_opts &opts)
|
|
{
|
|
for(uint i(0); i < opts.rows / simd::lanes<T>(); ++i)
|
|
out[i] += bias[i];
|
|
|
|
math::fmma(out, in, weight, opts);
|
|
}
|
|
|
|
void
|
|
ircd::gpt::gelu(f32x4 *const out,
|
|
const f32x4 *const in)
|
|
{
|
|
for(uint j(0); j < 3072 / 4; ++j)
|
|
gelu(out[j], in[j]);
|
|
}
|
|
|
|
void
|
|
ircd::gpt::gelu(f32x4 &out,
|
|
const f32x4 &in)
|
|
{
|
|
out = 0.5 * in * (1.0 + tanh(in * f32(0.7978845608) * (1.0 + f32(0.044715) * in * in)));
|
|
}
|
|
|
|
//
|
|
// backside
|
|
//
|
|
|
|
[[gnu::noinline]]
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::decoder ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
for(uint i(0); i < 12; ++i)
|
|
off = backprop(task, grad, param.layer[i], moment, off);
|
|
|
|
off = backprop(task, grad, param.f, moment, off);
|
|
off = backprop(task, grad, param.word, moment, off);
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::embed ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
assert(task.opts);
|
|
const auto &opts
|
|
{
|
|
*task.opts
|
|
};
|
|
|
|
for(uint i(0); i < opts.context_tokens; ++i)
|
|
off = adamw(task, grad, param.pos[i], 768, moment, off);
|
|
|
|
for(uint i(0); i < opts.logits; ++i)
|
|
off = adamw(task, grad, param.token[i], 768, moment, off);
|
|
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::block ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
off = backprop(task, grad, param.ln1, moment, off);
|
|
off = backprop(task, grad, param.attn, moment, off);
|
|
off = backprop(task, grad, param.ln2, moment, off);
|
|
off = backprop(task, grad, param.ffnn, moment, off);
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::attn ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
off = adamw(task, grad, param.attn_bias, 2304, moment, off);
|
|
|
|
for(uint i(0); i < 768; ++i)
|
|
off = adamw(task, grad, param.attn_weight[i], 2304, moment, off);
|
|
|
|
off = adamw(task, grad, param.proj_bias, 768, moment, off);
|
|
|
|
for(uint i(0); i < 768; ++i)
|
|
off = adamw(task, grad, param.proj_weight[i], 768, moment, off);
|
|
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::ffnn ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
off = adamw(task, grad, param.fc_bias, 3072, moment, off);
|
|
|
|
for(uint i(0); i < 768; ++i)
|
|
off = adamw(task, grad, param.fc_weight[i], 3072, moment, off);
|
|
|
|
off = adamw(task, grad, param.proj_bias, 768, moment, off);
|
|
|
|
for(uint i(0); i < 3072; ++i)
|
|
off = adamw(task, grad, param.proj_weight[i], 768, moment, off);
|
|
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::backprop(task &task,
|
|
const f32 grad,
|
|
model::norm ¶m,
|
|
f32 *const (&moment)[2],
|
|
size_t off)
|
|
{
|
|
off = adamw(task, grad, param.bias, 768, moment, off);
|
|
off = adamw(task, grad, param.weight, 768, moment, off);
|
|
return off;
|
|
}
|
|
|
|
[[gnu::noinline]]
|
|
size_t
|
|
ircd::gpt::adamw(task &task,
|
|
const f32 grad,
|
|
f32 *const p_,
|
|
const size_t num,
|
|
f32 *const (&__restrict__ m_)[2],
|
|
size_t off)
|
|
{
|
|
assert(task.opts);
|
|
const auto &opts
|
|
{
|
|
*task.opts
|
|
};
|
|
|
|
assert(task.ctrl);
|
|
auto &ctrl
|
|
{
|
|
*task.ctrl
|
|
};
|
|
|
|
f32x4 *const p[3]
|
|
{
|
|
reinterpret_cast<f32x4 *>(p_),
|
|
reinterpret_cast<f32x4 *>(m_[0]) + off,
|
|
reinterpret_cast<f32x4 *>(m_[1]) + off,
|
|
};
|
|
|
|
for(uint i(0); i < num / 4; ++i)
|
|
off = adamw(p[0][i], p[1][i], p[2][i], grad, opts.alpha, opts.beta[0], opts.beta[1], ctrl.epic.step, off);
|
|
|
|
return off;
|
|
}
|
|
|
|
size_t
|
|
ircd::gpt::adamw(f32x4 &__restrict__ param,
|
|
f32x4 &__restrict__ moment0,
|
|
f32x4 &__restrict__ moment1,
|
|
const f32 grad,
|
|
const f32 alpha,
|
|
const f32 beta0,
|
|
const f32 beta1,
|
|
const u32 step,
|
|
const size_t off)
|
|
{
|
|
const f32x4 one
|
|
{
|
|
1.0f, 1.0f, 1.0f, 1.0f,
|
|
};
|
|
|
|
const f32x4 a[2]
|
|
{
|
|
{ one - beta0 },
|
|
{ one - beta1 },
|
|
};
|
|
|
|
const f32x4 avg_mul[2]
|
|
{
|
|
{ moment0 * beta0 },
|
|
{ moment1 * beta1 },
|
|
};
|
|
|
|
const f32x4 avg_dot[2]
|
|
{
|
|
{ avg_mul[0] + a[0] * grad },
|
|
{ avg_mul[1] + a[1] * grad * grad },
|
|
};
|
|
|
|
const f32x4 bias[2]
|
|
{
|
|
{ avg_dot[0] / (one - powf(beta0, step + 1)) },
|
|
{ avg_dot[1] / (one - powf(beta1, step + 1)) },
|
|
};
|
|
|
|
const f32x4 denom
|
|
{
|
|
sqrtf(bias[1]) + 0.000001f // epsilon
|
|
};
|
|
|
|
const f32x4 delta
|
|
{
|
|
alpha * (bias[0] / denom)
|
|
};
|
|
|
|
const f32x4 update
|
|
{
|
|
param - delta
|
|
};
|
|
|
|
moment0 = avg_dot[0];
|
|
moment1 = avg_dot[1];
|
|
param = update;
|
|
return off + 1;
|
|
}
|
|
|
|
//
|
|
// gpt::task
|
|
//
|
|
|
|
ircd::gpt::task::task(const gpt::opts *const opts,
|
|
struct ircd_gpt_task *const ctrl)
|
|
:opts
|
|
{
|
|
opts
|
|
}
|
|
,ctrl
|
|
{
|
|
ctrl
|
|
}
|
|
{
|
|
memset(this->ctrl, 0x0, sizeof(ircd_gpt_task));
|
|
|
|
this->ctrl->rand[0] = this->opts->seed;
|
|
this->ctrl->rand[1] = this->opts->seed;
|
|
this->ctrl->rand[2] = -1UL;
|
|
this->ctrl->rand[3] = -1UL;
|
|
}
|
|
|
|
ircd::gpt::task::~task()
|
|
noexcept
|
|
{
|
|
}
|
|
|
|
//
|
|
// gpt::opts
|
|
//
|
|
|
|
ircd_gpt_opts::ircd_gpt_opts(const ircd::gpt::model::decoder *const model)
|
|
noexcept
|
|
:model
|
|
{
|
|
model?: ircd::gpt::model::default_model
|
|
}
|
|
,seed
|
|
{
|
|
1234567890UL
|
|
}
|
|
,limit
|
|
{
|
|
-1U
|
|
}
|
|
,top_k
|
|
{
|
|
2U
|
|
}
|
|
,context_tokens
|
|
{
|
|
1024U
|
|
}
|
|
,buffer_tokens
|
|
{
|
|
1024U
|
|
}
|
|
,embed_elems
|
|
{
|
|
768U
|
|
}
|
|
,attn_mult
|
|
{
|
|
3U
|
|
}
|
|
,ffnn_mult
|
|
{
|
|
4U
|
|
}
|
|
,attn_elems
|
|
{
|
|
embed_elems * attn_mult
|
|
}
|
|
,ffnn_elems
|
|
{
|
|
embed_elems * ffnn_mult
|
|
}
|
|
,lanes
|
|
{
|
|
4U
|
|
}
|
|
,embed_width
|
|
{
|
|
embed_elems / lanes
|
|
}
|
|
,attn_width
|
|
{
|
|
attn_elems / lanes
|
|
}
|
|
,attn_height
|
|
{
|
|
embed_elems / lanes
|
|
}
|
|
,ffnn_width
|
|
{
|
|
ffnn_elems / lanes
|
|
}
|
|
,ffnn_height
|
|
{
|
|
embed_elems / lanes
|
|
}
|
|
,logits
|
|
{
|
|
50257
|
|
}
|
|
,training_steps
|
|
{
|
|
250000
|
|
}
|
|
,validation_steps
|
|
{
|
|
5000
|
|
}
|
|
,testing_steps
|
|
{
|
|
5000
|
|
}
|
|
,label
|
|
{
|
|
198
|
|
}
|
|
,debug
|
|
{
|
|
0x01
|
|
}
|
|
,alpha
|
|
{
|
|
0.001f
|
|
}
|
|
,beta
|
|
{
|
|
0.9f,
|
|
0.999f,
|
|
}
|
|
,epsilon
|
|
{
|
|
0.000001
|
|
}
|
|
,gates
|
|
{
|
|
0
|
|
}
|
|
{
|
|
}
|