[Feature] vLLM ARM Enablement for AARCH64 CPUs (#9228)

Signed-off-by: Sanket Kale <sanketk.kale@fujitsu.com>
Co-authored-by: Sanket Kale <sanketk.kale@fujitsu.com>
Co-authored-by: mgoin <michael@neuralmagic.com>
This commit is contained in:
Sanket Kale
2024-11-26 08:02:39 +05:30
committed by GitHub
parent 45ac4ff270
commit a6760f6456
9 changed files with 678 additions and 16 deletions

View File

@@ -51,6 +51,10 @@ struct KernelVecType<c10::BFloat16> {
using v_load_vec_type = vec_op::BF16Vec16;
};
#else
#ifdef __aarch64__
#ifndef ARM_BF16_SUPPORT
// pass
#else
template <>
struct KernelVecType<c10::BFloat16> {
using q_load_vec_type = vec_op::BF16Vec8;
@@ -60,6 +64,18 @@ struct KernelVecType<c10::BFloat16> {
using qk_acc_vec_type = vec_op::FP32Vec16;
using v_load_vec_type = vec_op::BF16Vec16;
};
#endif
#else
template <>
struct KernelVecType<c10::BFloat16> {
using q_load_vec_type = vec_op::BF16Vec8;
using q_vec_type = vec_op::FP32Vec16;
using k_load_vec_type = vec_op::BF16Vec16;
using k_vec_type = vec_op::FP32Vec16;
using qk_acc_vec_type = vec_op::FP32Vec16;
using v_load_vec_type = vec_op::BF16Vec16;
};
#endif
#endif
template <typename T>
@@ -779,4 +795,4 @@ void paged_attention_v2(
CALL_V2_KERNEL_LAUNCHER_BLOCK_SIZE(scalar_t);
CPU_KERNEL_GUARD_OUT(paged_attention_v2_impl)
});
}
}

View File

@@ -1,4 +1,3 @@
#ifndef CPU_TYPES_HPP
#define CPU_TYPES_HPP
@@ -8,8 +7,11 @@
#elif defined(__POWER9_VECTOR__)
//ppc implementation
#include "cpu_types_vsx.hpp"
#elif defined(__aarch64__)
//arm implementation
#include "cpu_types_arm.hpp"
#else
#warning "unsupported vLLM cpu implementation"
#endif
#endif
#endif

515
csrc/cpu/cpu_types_arm.hpp Normal file
View File

@@ -0,0 +1,515 @@
#include <arm_neon.h>
#include <torch/all.h>
#include <cmath>
namespace vec_op {
#ifdef ARM_BF16_SUPPORT
#define VLLM_DISPATCH_CASE_FLOATING_TYPES(...) \
AT_DISPATCH_CASE(at::ScalarType::Float, __VA_ARGS__) \
AT_DISPATCH_CASE(at::ScalarType::Half, __VA_ARGS__) \
AT_DISPATCH_CASE(at::ScalarType::BFloat16, __VA_ARGS__)
#else
#define VLLM_DISPATCH_CASE_FLOATING_TYPES(...) \
AT_DISPATCH_CASE(at::ScalarType::Float, __VA_ARGS__) \
AT_DISPATCH_CASE(at::ScalarType::Half, __VA_ARGS__)
#endif
#define VLLM_DISPATCH_FLOATING_TYPES(TYPE, NAME, ...) \
AT_DISPATCH_SWITCH(TYPE, NAME, VLLM_DISPATCH_CASE_FLOATING_TYPES(__VA_ARGS__))
#ifndef CPU_OP_GUARD
#define CPU_KERNEL_GUARD_IN(NAME)
#define CPU_KERNEL_GUARD_OUT(NAME)
#else
#define CPU_KERNEL_GUARD_IN(NAME) \
std::cout << #NAME << " invoked." << std::endl;
#define CPU_KERNEL_GUARD_OUT(NAME) std::cout << #NAME << " exit." << std::endl;
#endif
#define FORCE_INLINE __attribute__((always_inline)) inline
namespace {
template <typename T, T... indexes, typename F>
constexpr void unroll_loop_item(std::integer_sequence<T, indexes...>, F &&f) {
(f(std::integral_constant<T, indexes>{}), ...);
};
};
template <typename T, T count, typename F,
typename = std::enable_if_t<std::is_invocable_v<F, T>>>
constexpr void unroll_loop(F &&f) {
unroll_loop_item(std::make_integer_sequence<T, count>{}, std::forward<F>(f));
}
template <typename T> struct Vec {
constexpr static int get_elem_num() { return T::VEC_ELEM_NUM; };
};
struct FP32Vec8;
struct FP32Vec16;
struct FP16Vec8 : public Vec<FP16Vec8> {
constexpr static int VEC_ELEM_NUM = 8;
float16x8_t reg;
explicit FP16Vec8(const void *ptr)
: reg(vld1q_f16(static_cast<const __fp16 *>(ptr))) {};
explicit FP16Vec8(const FP32Vec8 &);
void save(void *ptr) const {
vst1q_f16(static_cast<__fp16 *>(ptr), reg);
}
};
struct FP16Vec16 : public Vec<FP16Vec16> {
constexpr static int VEC_ELEM_NUM = 16;
float16x8x2_t reg;
explicit FP16Vec16(const void *ptr) {
reg.val[0] = vld1q_f16(reinterpret_cast<const __fp16*>(ptr));
reg.val[1] = vld1q_f16(reinterpret_cast<const __fp16*>(ptr) + 8);
}
explicit FP16Vec16(const FP32Vec16& vec);
void save(void *ptr) const {
vst1q_f16(reinterpret_cast<__fp16*>(ptr), reg.val[0]);
vst1q_f16(reinterpret_cast<__fp16*>(ptr) + 8, reg.val[1]);
}
void save(void *ptr, const int elem_num) const {
int full_blocks = elem_num / 8;
int remainder = elem_num % 8;
if (full_blocks > 0) {
vst1q_f16(reinterpret_cast<__fp16*>(ptr), reg.val[0]);
if (full_blocks > 1) {
vst1q_f16(reinterpret_cast<__fp16*>(ptr) + 8, reg.val[1]);
}
}
if (remainder > 0) {
float16x8_t temp = reg.val[full_blocks];
for (int i = 0; i < remainder; ++i) {
reinterpret_cast<__fp16*>(ptr)[full_blocks * 8 + i] = vgetq_lane_f16(temp, i);
}
}
}
};
#ifdef ARM_BF16_SUPPORT
struct BF16Vec8 : public Vec<BF16Vec8> {
constexpr static int VEC_ELEM_NUM = 8;
bfloat16x8_t reg;
explicit BF16Vec8(const void *ptr)
: reg(*reinterpret_cast<const bfloat16x8_t *>(ptr)) {};
explicit BF16Vec8(bfloat16x8_t data) : reg(data) {};
explicit BF16Vec8(const FP32Vec8 &);
explicit BF16Vec8(float32x4x2_t v) : reg(vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.val[0]), v.val[1])) {};
void save(void *ptr) const { *reinterpret_cast<bfloat16x8_t *>(ptr) = reg; }
};
struct BF16Vec16 : public Vec<BF16Vec16> {
constexpr static int VEC_ELEM_NUM = 16;
bfloat16x8x2_t reg;
explicit BF16Vec16(const void *ptr)
: reg(*reinterpret_cast<const bfloat16x8x2_t *>(ptr)) {};
explicit BF16Vec16(bfloat16x8x2_t data) : reg(data) {};
explicit BF16Vec16(const FP32Vec16 &);
explicit BF16Vec16(float32x4x4_t v) : reg({
vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.val[0]), v.val[1]),
vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.val[2]), v.val[3])
}){};
void save(void *ptr) const { *reinterpret_cast<bfloat16x8x2_t *>(ptr) = reg; };
};
struct BF16Vec32 : public Vec<BF16Vec32> {
constexpr static int VEC_ELEM_NUM = 32;
bfloat16x8x4_t reg;
explicit BF16Vec32(const void *ptr)
: reg(*reinterpret_cast<const bfloat16x8x4_t *>(ptr)) {};
explicit BF16Vec32(bfloat16x8x4_t data) : reg(data) {};
explicit BF16Vec32(const BF16Vec8 &vec8_data) : reg({
vec8_data.reg,
vec8_data.reg,
vec8_data.reg,
vec8_data.reg
}) {};
void save(void *ptr) const { *reinterpret_cast<bfloat16x8x4_t *>(ptr) = reg; };
};
#endif
struct FP32Vec4 : public Vec<FP32Vec4> {
constexpr static int VEC_ELEM_NUM = 4;
union AliasReg {
float32x4_t reg;
float values[VEC_ELEM_NUM];
};
float32x4_t reg;
explicit FP32Vec4(float v) : reg(vdupq_n_f32(v)) {};
explicit FP32Vec4() : reg(vdupq_n_f32(0.0f)) {};
explicit FP32Vec4(const float *ptr) : reg(vld1q_f32(ptr)) {};
explicit FP32Vec4(float32x4_t data) : reg(data) {};
explicit FP32Vec4(const FP32Vec4 &data) : reg(data.reg) {};
};
struct FP32Vec8 : public Vec<FP32Vec8> {
constexpr static int VEC_ELEM_NUM = 8;
union AliasReg {
float32x4x2_t reg;
float values[VEC_ELEM_NUM];
};
float32x4x2_t reg;
explicit FP32Vec8(float v) : reg({vmovq_n_f32(v), vmovq_n_f32(v)}) {};
explicit FP32Vec8() : reg({vmovq_n_f32(0.0), vmovq_n_f32(0.0)}) {};
explicit FP32Vec8(const float *ptr) : reg({vld1q_f32(ptr), vld1q_f32(ptr + 4)}) {};
explicit FP32Vec8(float32x4x2_t data) : reg(data) {};
explicit FP32Vec8(const FP32Vec8 &data) : reg(data.reg) {};
explicit FP32Vec8(const FP16Vec8 &v) {
reg.val[0] = vcvt_f32_f16(vget_low_f16(v.reg));
reg.val[1] = vcvt_f32_f16(vget_high_f16(v.reg));
};
explicit FP32Vec8(float16x8_t v) : reg({vcvt_f32_f16(vget_low_f16(v)), vcvt_f32_f16(vget_high_f16(v))}) {};
#ifdef ARM_BF16_SUPPORT
explicit FP32Vec8(bfloat16x8_t v) : reg({vcvtq_low_f32_bf16(v), vcvtq_high_f32_bf16(v)}) {};
explicit FP32Vec8(const BF16Vec8 &v) : reg({vcvtq_low_f32_bf16(v.reg), vcvtq_high_f32_bf16(v.reg)}) {};
#endif
float reduce_sum() const {
AliasReg ar;
ar.reg = reg;
float answer = 0;
unroll_loop<int, VEC_ELEM_NUM>([&answer, &ar](int i) { answer += ar.values[i]; });
return answer;
}
FP32Vec8 exp() const {
AliasReg ar;
ar.reg = reg;
float32x2_t exp_vec0 = {expf(ar.values[0]), expf(ar.values[1])};
float32x2_t exp_vec1 = {expf(ar.values[2]), expf(ar.values[3])};
float32x2_t exp_vec2 = {expf(ar.values[4]), expf(ar.values[5])};
float32x2_t exp_vec3 = {expf(ar.values[6]), expf(ar.values[7])};
float32x4_t result0 = vcombine_f32(exp_vec0, exp_vec1);
float32x4_t result1 = vcombine_f32(exp_vec2, exp_vec3);
float32x4x2_t result;
result.val[0] = result0;
result.val[1] = result1;
return FP32Vec8(result);
}
FP32Vec8 tanh() const {
AliasReg ar;
ar.reg = reg;
float32x2_t tanh_vec0 = {tanhf(ar.values[0]), tanhf(ar.values[1])};
float32x2_t tanh_vec1 = {tanhf(ar.values[2]), tanhf(ar.values[3])};
float32x2_t tanh_vec2 = {tanhf(ar.values[4]), tanhf(ar.values[5])};
float32x2_t tanh_vec3 = {tanhf(ar.values[6]), tanhf(ar.values[7])};
float32x4_t result0 = vcombine_f32(tanh_vec0, tanh_vec1);
float32x4_t result1 = vcombine_f32(tanh_vec2, tanh_vec3);
float32x4x2_t result;
result.val[0] = result0;
result.val[1] = result1;
return FP32Vec8(result);
}
FP32Vec8 er() const {
AliasReg ar;
ar.reg = reg;
float32x2_t er_vec0 = {static_cast<float32_t>(erf(ar.values[0])), static_cast<float32_t>(erf(ar.values[1]))};
float32x2_t er_vec1 = {static_cast<float32_t>(erf(ar.values[2])), static_cast<float32_t>(erf(ar.values[3]))};
float32x2_t er_vec2 = {static_cast<float32_t>(erf(ar.values[4])), static_cast<float32_t>(erf(ar.values[5]))};
float32x2_t er_vec3 = {static_cast<float32_t>(erf(ar.values[6])), static_cast<float32_t>(erf(ar.values[7]))};
float32x4_t result0 = vcombine_f32(er_vec0, er_vec1);
float32x4_t result1 = vcombine_f32(er_vec2, er_vec3);
float32x4x2_t result;
result.val[0] = result0;
result.val[1] = result1;
return FP32Vec8(result);
}
FP32Vec8 operator*(const FP32Vec8 &b) const {
return FP32Vec8(float32x4x2_t({vmulq_f32(reg.val[0], b.reg.val[0]), vmulq_f32(reg.val[1], b.reg.val[1])}));
}
FP32Vec8 operator+(const FP32Vec8 &b) const {
return FP32Vec8(float32x4x2_t({vaddq_f32(reg.val[0], b.reg.val[0]), vaddq_f32(reg.val[1], b.reg.val[1])}));
}
FP32Vec8 operator-(const FP32Vec8 &b) const {
return FP32Vec8(float32x4x2_t({vsubq_f32(reg.val[0], b.reg.val[0]), vsubq_f32(reg.val[1], b.reg.val[1])}));
}
FP32Vec8 operator/(const FP32Vec8 &b) const {
return FP32Vec8(float32x4x2_t({vdivq_f32(reg.val[0], b.reg.val[0]), vdivq_f32(reg.val[1], b.reg.val[1])}));
}
void save(float *ptr) const {
vst1q_f32(ptr, reg.val[0]);
vst1q_f32(ptr + 4, reg.val[1]);
}
};
struct FP32Vec16 : public Vec<FP32Vec16> {
constexpr static int VEC_ELEM_NUM = 16;
union AliasReg {
float32x4x4_t reg;
float values[VEC_ELEM_NUM];
};
float32x4x4_t reg;
explicit FP32Vec16(float v) : reg({vmovq_n_f32(v), vmovq_n_f32(v), vmovq_n_f32(v), vmovq_n_f32(v)}) {}
explicit FP32Vec16() : reg({vmovq_n_f32(0.0), vmovq_n_f32(0.0), vmovq_n_f32(0.0), vmovq_n_f32(0.0)}) {}
explicit FP32Vec16(const float *ptr) : reg({vld1q_f32(ptr), vld1q_f32(ptr + 4), vld1q_f32(ptr + 8), vld1q_f32(ptr + 12)}) {}
explicit FP32Vec16(float32x4x4_t data) : reg(data) {}
explicit FP32Vec16(const FP32Vec8 &data) {
reg.val[0] = data.reg.val[0];
reg.val[1] = data.reg.val[1];
reg.val[2] = data.reg.val[0];
reg.val[3] = data.reg.val[1];
}
explicit FP32Vec16(const FP32Vec16 &data) : reg(data.reg) {}
explicit FP32Vec16(const FP16Vec8 &v) : FP32Vec16(FP32Vec8(v.reg)) {}
#ifdef ARM_BF16_SUPPORT
explicit FP32Vec16(bfloat16x8x2_t v) : reg({
vcvtq_low_f32_bf16(v.val[0]),
vcvtq_high_f32_bf16(v.val[0]),
vcvtq_low_f32_bf16(v.val[1]),
vcvtq_high_f32_bf16(v.val[1])
}) {};
#endif
explicit FP32Vec16(const FP32Vec4 &data) {
reg.val[0] = data.reg;
reg.val[1] = data.reg;
reg.val[2] = data.reg;
reg.val[3] = data.reg;
};
#ifdef ARM_BF16_SUPPORT
explicit FP32Vec16(const BF16Vec16 &v) : reg({
vcvtq_low_f32_bf16(v.reg.val[0]),
vcvtq_high_f32_bf16(v.reg.val[0]),
vcvtq_low_f32_bf16(v.reg.val[1]),
vcvtq_high_f32_bf16(v.reg.val[1])
}) {};
explicit FP32Vec16(const BF16Vec8 &v) : FP32Vec16(FP32Vec8(v)) {};
#endif
explicit FP32Vec16(const FP16Vec16 &v) {
reg.val[0] = vcvt_f32_f16(vget_low_f16(v.reg.val[0]));
reg.val[1] = vcvt_f32_f16(vget_high_f16(v.reg.val[0]));
reg.val[2] = vcvt_f32_f16(vget_low_f16(v.reg.val[1]));
reg.val[3] = vcvt_f32_f16(vget_high_f16(v.reg.val[1]));
};
FP32Vec16 operator+(const FP32Vec16 &b) const {
return FP32Vec16(float32x4x4_t({
vaddq_f32(reg.val[0], b.reg.val[0]),
vaddq_f32(reg.val[1], b.reg.val[1]),
vaddq_f32(reg.val[2], b.reg.val[2]),
vaddq_f32(reg.val[3], b.reg.val[3])}));
};
FP32Vec16 operator*(const FP32Vec16 &b) const {
return FP32Vec16(float32x4x4_t({
vmulq_f32(reg.val[0], b.reg.val[0]),
vmulq_f32(reg.val[1], b.reg.val[1]),
vmulq_f32(reg.val[2], b.reg.val[2]),
vmulq_f32(reg.val[3], b.reg.val[3])}));
};
FP32Vec16 operator-(const FP32Vec16 &b) const {
return FP32Vec16(float32x4x4_t({
vsubq_f32(reg.val[0], b.reg.val[0]),
vsubq_f32(reg.val[1], b.reg.val[1]),
vsubq_f32(reg.val[2], b.reg.val[2]),
vsubq_f32(reg.val[3], b.reg.val[3])
}));
};
FP32Vec16 operator/(const FP32Vec16 &b) const {
return FP32Vec16(float32x4x4_t({
vdivq_f32(reg.val[0], b.reg.val[0]),
vdivq_f32(reg.val[1], b.reg.val[1]),
vdivq_f32(reg.val[2], b.reg.val[2]),
vdivq_f32(reg.val[3], b.reg.val[3])
}));
};
float reduce_sum() const {
AliasReg ar;
ar.reg = reg;
float answer = 0;
unroll_loop<int, VEC_ELEM_NUM>([&answer, &ar](int i) { answer += ar.values[i]; });
return answer;
};
template <int group_size> float reduce_sub_sum(int idx) {
static_assert(VEC_ELEM_NUM % group_size == 0);
AliasReg ar;
ar.reg = reg;
float answer = 0;
const int start = idx * group_size;
unroll_loop<int, group_size>(
[&answer, &start, ar](int i) { answer += ar.values[start + i]; });
return answer;
};
void save(float *ptr) const {
vst1q_f32(ptr, reg.val[0]);
vst1q_f32(ptr + 4, reg.val[1]);
vst1q_f32(ptr + 8, reg.val[2]);
vst1q_f32(ptr + 12, reg.val[3]);
};
};
template <typename T> struct VecType { using vec_type = void; };
template <typename T> using vec_t = typename VecType<T>::vec_type;
template <> struct VecType<float> { using vec_type = FP32Vec8; };
template <> struct VecType<c10::Half> { using vec_type = FP16Vec8; };
#ifdef ARM_BF16_SUPPORT
template <> struct VecType<c10::BFloat16> { using vec_type = BF16Vec8; };
#endif
template <typename T> void storeFP32(float v, T *ptr) { *ptr = v; }
template <> inline void storeFP32<c10::Half>(float v, c10::Half *ptr) {
*reinterpret_cast<__fp16 *>(ptr) = v;
}
inline FP16Vec16::FP16Vec16(const FP32Vec16 &v) {
float16x4_t low_0 = vcvt_f16_f32(v.reg.val[0]);
float16x4_t high_0 = vcvt_f16_f32(v.reg.val[1]);
float16x4_t low_1 = vcvt_f16_f32(v.reg.val[2]);
float16x4_t high_1 = vcvt_f16_f32(v.reg.val[3]);
reg.val[0] = vcombine_f16(low_0, high_0);
reg.val[1] = vcombine_f16(low_1, high_1);
};
inline FP16Vec8 :: FP16Vec8(const FP32Vec8 &v) {
float16x4_t lower_half = vcvt_f16_f32(v.reg.val[0]);
float16x4_t upper_half = vcvt_f16_f32(v.reg.val[1]);
reg = vcombine_f16(lower_half, upper_half);
};
inline void fma(FP32Vec16 &acc, FP32Vec16 &a, FP32Vec16 &b) {
acc.reg.val[0] = vfmaq_f32(acc.reg.val[0], a.reg.val[0], b.reg.val[0]);
acc.reg.val[1] = vfmaq_f32(acc.reg.val[1], a.reg.val[1], b.reg.val[1]);
acc.reg.val[2] = vfmaq_f32(acc.reg.val[2], a.reg.val[2], b.reg.val[2]);
acc.reg.val[3] = vfmaq_f32(acc.reg.val[3], a.reg.val[3], b.reg.val[3]);
};
#ifdef ARM_BF16_SUPPORT
inline void fma(FP32Vec16 &acc, BF16Vec32 &a, BF16Vec32 &b) {
float32x4_t a0_low = vcvt_f32_bf16(vget_low_bf16(a.reg.val[0]));
float32x4_t a0_high = vcvt_f32_bf16(vget_high_bf16(a.reg.val[0]));
float32x4_t a1_low = vcvt_f32_bf16(vget_low_bf16(a.reg.val[1]));
float32x4_t a1_high = vcvt_f32_bf16(vget_high_bf16(a.reg.val[1]));
float32x4_t b0_low = vcvt_f32_bf16(vget_low_bf16(b.reg.val[0]));
float32x4_t b0_high = vcvt_f32_bf16(vget_high_bf16(b.reg.val[0]));
float32x4_t b1_low = vcvt_f32_bf16(vget_low_bf16(b.reg.val[1]));
float32x4_t b1_high = vcvt_f32_bf16(vget_high_bf16(b.reg.val[1]));
acc.reg.val[0] = vfmaq_f32(acc.reg.val[0], a0_low, b0_low);
acc.reg.val[1] = vfmaq_f32(acc.reg.val[1], a0_high, b0_high);
acc.reg.val[2] = vfmaq_f32(acc.reg.val[2], a1_low, b1_low);
acc.reg.val[3] = vfmaq_f32(acc.reg.val[3], a1_high, b1_high);
};
#endif
#ifdef ARM_BF16_SUPPORT
inline BF16Vec8::BF16Vec8(const FP32Vec8 &v) : reg(vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.reg.val[0]), v.reg.val[1])) {};
inline BF16Vec16::BF16Vec16(const FP32Vec16 &v) : reg({
vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.reg.val[0]), v.reg.val[1]),
vcvtq_high_bf16_f32(vcvtq_low_bf16_f32(v.reg.val[2]), v.reg.val[3])
}){};
#endif
inline void prefetch(const void *addr) {
__builtin_prefetch(addr, 0, 1);
};
#ifdef ARM_BF16_SUPPORT
template <>
inline void storeFP32<c10::BFloat16>(float v, c10::BFloat16 *ptr) {
*reinterpret_cast<__bf16 *>(ptr) = vcvth_bf16_f32(v);
};
#endif
};