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TheRock/rocm-libraries/shared/rocroller/test/unit/F8Test.cpp
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Flatten subprojects into a single base monorepo
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// Copyright Advanced Micro Devices, Inc., or its affiliates.
// SPDX-License-Identifier: MIT
#include <algorithm>
#include <rocRoller/AssemblyKernel.hpp>
#include <rocRoller/CodeGen/ArgumentLoader.hpp>
#include <rocRoller/CodeGen/Arithmetic/ArithmeticGenerator.hpp>
#include <rocRoller/CodeGen/CopyGenerator.hpp>
#include <rocRoller/CodeGen/MemoryInstructions.hpp>
#include <rocRoller/CommandSolution.hpp>
#include <rocRoller/Context.hpp>
#include <rocRoller/Operations/Command.hpp>
#include "GPUContextFixture.hpp"
#include "GenericContextFixture.hpp"
#include "Utilities.hpp"
#include <common/F8Values.hpp>
using namespace rocRoller;
namespace rocRollerTest
{
struct F8Problem
{
std::shared_ptr<Command> command;
rocRoller::Operations::OperationTag resultTag, aTag;
};
class F8TestGPU : public GPUContextFixtureParam<rocRoller::DataType>
{
};
const size_t numF8PerElement = 4;
/**
* Loads F8x4 to GPU, unpacks to individual F8s, convert to float, store to CPU
*/
void genF8x4LoadToFloatStore(rocRoller::ContextPtr context,
F8Problem& prob,
int N,
rocRoller::DataType F8Type)
{
auto k = context->kernel();
k->setKernelDimensions(1);
prob.command = std::make_shared<Command>();
prob.resultTag = prob.command->allocateTag();
auto result_exp = std::make_shared<Expression::Expression>(prob.command->allocateArgument(
{DataType::Float, PointerType::PointerGlobal}, prob.resultTag, ArgumentType::Value));
prob.aTag = prob.command->allocateTag();
auto a_exp = std::make_shared<Expression::Expression>(prob.command->allocateArgument(
{F8Type, PointerType::PointerGlobal}, prob.aTag, ArgumentType::Value));
auto one = std::make_shared<Expression::Expression>(1u);
auto zero = std::make_shared<Expression::Expression>(0u);
k->addArgument({"result",
{DataType::Float, PointerType::PointerGlobal},
DataDirection::WriteOnly,
result_exp});
k->addArgument({"a", {F8Type, PointerType::PointerGlobal}, DataDirection::ReadOnly, a_exp});
k->setWorkgroupSize({1, 1, 1});
k->setWorkitemCount({one, one, one});
k->setDynamicSharedMemBytes(zero);
context->schedule(k->preamble());
context->schedule(k->prolog());
auto kb = [&]() -> Generator<Instruction> {
Register::ValuePtr s_result, s_a;
co_yield context->argLoader()->getValue("result", s_result);
co_yield context->argLoader()->getValue("a", s_a);
auto result_ptr
= Register::Value::Placeholder(context,
Register::Type::Vector,
{DataType::Float, PointerType::PointerGlobal},
1,
Register::AllocationOptions::FullyContiguous());
auto packed = DataTypeInfo::Get(F8Type).packedVariableType();
AssertFatal(packed, "packed data type not found");
DataType packedDataType = packed->dataType;
auto a_ptr
= Register::Value::Placeholder(context,
Register::Type::Vector,
{packedDataType, PointerType::PointerGlobal},
1,
Register::AllocationOptions::FullyContiguous());
auto v_a
= Register::Value::Placeholder(context, Register::Type::Vector, packedDataType, 1);
auto v_temp = Register::Value::Placeholder(context, Register::Type::Vector, F8Type, 1);
co_yield v_a->allocate();
co_yield a_ptr->allocate();
co_yield result_ptr->allocate();
co_yield context->copier()->copy(result_ptr, s_result, "Move pointer.");
co_yield context->copier()->copy(a_ptr, s_a, "Move pointer.");
auto bpi
= CeilDivide(DataTypeInfo::Get(a_ptr->variableType().dataType).elementBits, 8u);
auto bpo = CeilDivide(
DataTypeInfo::Get(result_ptr->variableType().dataType).elementBits, 8u);
for(int i = 0; i < N; i++)
{
co_yield context->mem()->loadGlobal(v_a, a_ptr, i * bpi, bpi);
// Bitmask each F8 of F8x4, convert to float, then store
for(int f8_idx = 0; f8_idx < numF8PerElement; f8_idx++)
{
co_yield_(Instruction::Comment("Extract f8 from packed F8"));
co_yield generateOp<Expression::BitFieldExtract>(
v_temp,
v_a,
Expression::BitFieldExtract{
{}, F8Type, static_cast<uint32_t>(f8_idx * 8), 8});
co_yield_(Instruction::Comment("Convert to float"));
co_yield generateOp<Expression::Convert>(
v_temp, v_temp, Expression::Convert{.destinationType = DataType::Float});
co_yield context->mem()->storeGlobal(result_ptr,
v_temp,
(i * numF8PerElement + f8_idx) * bpo,
bpo,
"Store to result");
}
}
};
context->schedule(kb());
context->schedule(k->postamble());
context->schedule(k->amdgpu_metadata());
}
/**
* @param N number of F8x4; so Nx4 float results
*/
template <typename T>
void executeF8x4LoadToFloatStore(rocRoller::ContextPtr context, rocRoller::DataType F8Type)
{
int N = 256;
auto rng = RandomGenerator(316473u);
auto a = rng.vector<uint>(
N, std::numeric_limits<uint>::min(), std::numeric_limits<uint>::max());
std::vector<float> result(a.size() * numF8PerElement);
F8Problem prob;
genF8x4LoadToFloatStore(context, prob, a.size(), F8Type);
CommandKernel commandKernel;
commandKernel.setContext(context);
commandKernel.generateKernel();
auto d_a = make_shared_device(a);
auto d_result = make_shared_device<float>(result.size());
CommandArguments commandArgs = prob.command->createArguments();
commandArgs.setArgument(prob.resultTag, ArgumentType::Value, d_result.get());
commandArgs.setArgument(prob.aTag, ArgumentType::Value, d_a.get());
commandKernel.launchKernel(commandArgs.runtimeArguments());
ASSERT_THAT(
hipMemcpy(
result.data(), d_result.get(), sizeof(float) * result.size(), hipMemcpyDefault),
HasHipSuccess(0));
for(int i = 0; i < a.size(); i++)
{
union
{
uint32_t word;
uint8_t bytes[4];
} u;
u.word = a[i];
for(int f8_idx = 0; f8_idx < numF8PerElement; f8_idx++)
{
T expected_f8;
expected_f8.data = u.bytes[f8_idx];
float actual = result.at(i * numF8PerElement + f8_idx);
float expected = expected_f8.operator float();
if(std::isnan(expected))
EXPECT_TRUE(std::isnan(actual));
else
EXPECT_EQ(actual, expected);
}
}
}
TEST_P(F8TestGPU, GPU_F8x4LoadToFloatStore)
{
auto F8Type = std::get<rocRoller::DataType>(GetParam());
if(isLocalDevice())
{
if(F8Type == rocRoller::DataType::FP8)
executeF8x4LoadToFloatStore<rocRoller::FP8>(m_context, F8Type);
else
executeF8x4LoadToFloatStore<rocRoller::BF8>(m_context, F8Type);
}
else
{
F8Problem prob;
genF8x4LoadToFloatStore(m_context, prob, 2, F8Type);
std::vector<char> assembledKernel = m_context->instructions()->assemble();
EXPECT_GT(assembledKernel.size(), 0);
}
}
/**
* Loads sparse F8s to GPU, packs into F8x4s, stores to CPU
*/
void genF8LoadGather(rocRoller::ContextPtr m_context, int N, rocRoller::DataType F8Type)
{
auto k = m_context->kernel();
k->setKernelDimensions(1);
auto command = std::make_shared<Command>();
auto resultTag = command->allocateTag();
auto result_exp = std::make_shared<Expression::Expression>(command->allocateArgument(
{DataType::UInt32, PointerType::PointerGlobal}, resultTag, ArgumentType::Value));
auto aTag = command->allocateTag();
auto a_exp = std::make_shared<Expression::Expression>(command->allocateArgument(
{F8Type, PointerType::PointerGlobal}, aTag, ArgumentType::Value));
auto one = std::make_shared<Expression::Expression>(1u);
auto zero = std::make_shared<Expression::Expression>(0u);
k->addArgument({"result",
{DataType::UInt32, PointerType::PointerGlobal},
DataDirection::WriteOnly,
result_exp});
k->addArgument({"a", {F8Type, PointerType::PointerGlobal}, DataDirection::ReadOnly, a_exp});
k->setWorkgroupSize({1, 1, 1});
k->setWorkitemCount({one, one, one});
k->setDynamicSharedMemBytes(zero);
m_context->schedule(k->preamble());
m_context->schedule(k->prolog());
auto kb = [&]() -> Generator<Instruction> {
Register::ValuePtr s_result, s_a;
co_yield m_context->argLoader()->getValue("result", s_result);
co_yield m_context->argLoader()->getValue("a", s_a);
auto result_ptr
= Register::Value::Placeholder(m_context,
Register::Type::Vector,
{DataType::UInt32, PointerType::PointerGlobal},
1,
Register::AllocationOptions::FullyContiguous());
auto a_ptr
= Register::Value::Placeholder(m_context,
Register::Type::Vector,
{F8Type, PointerType::PointerGlobal},
1,
Register::AllocationOptions::FullyContiguous());
auto v_a = Register::Value::Placeholder(m_context, Register::Type::Vector, F8Type, 1);
auto v_temp
= Register::Value::Placeholder(m_context,
Register::Type::Vector,
F8Type,
4,
Register::AllocationOptions::FullyContiguous());
co_yield v_a->allocate();
co_yield a_ptr->allocate();
co_yield result_ptr->allocate();
co_yield v_temp->allocate();
co_yield m_context->copier()->copy(result_ptr, s_result, "Move pointer.");
co_yield m_context->copier()->copy(a_ptr, s_a, "Move pointer.");
auto bpi
= CeilDivide(DataTypeInfo::Get(a_ptr->variableType().dataType).elementBits, 8u);
auto bpo = CeilDivide(
DataTypeInfo::Get(result_ptr->variableType().dataType).elementBits, 8u);
Expression::ExpressionPtr bufferExpr = Expression::literal(Buffer{0, 0, 0, 0});
bufferExpr = BufferDescriptor::SetDefaults(bufferExpr, m_context);
bufferExpr = BufferDescriptor::SetBasePointer(bufferExpr, s_a->expression(), m_context);
bufferExpr = BufferDescriptor::SetSize(bufferExpr, Expression::literal(N), m_context);
auto bufferRegs = Register::Value::Placeholder(
m_context, Register::Type::Scalar, {DataType::None, PointerType::Buffer}, 1);
co_yield Expression::generate(bufferRegs, bufferExpr, m_context);
bufferExpr = bufferRegs->expression();
auto bufInstOpts = rocRoller::BufferInstructionOptions();
auto vgprSerial = m_context->kernel()->workitemIndex()[0];
for(int i = 0; i < N; ++i)
{
co_yield m_context->mem()->loadBuffer(
v_temp->element({i}), vgprSerial, i, bufferRegs, bufInstOpts, 1);
}
bufferExpr
= BufferDescriptor::SetBasePointer(bufferExpr, s_result->expression(), m_context);
co_yield Expression::generate(bufferRegs, bufferExpr, m_context);
co_yield m_context->mem()->storeBuffer(
v_temp, vgprSerial, 0, bufferRegs, bufInstOpts, N);
};
m_context->schedule(kb());
m_context->schedule(k->postamble());
m_context->schedule(k->amdgpu_metadata());
}
/**
* @param N number of F8x4; so Nx4 float results
*/
void executeF8LoadGather(rocRoller::ContextPtr context, int N, rocRoller::DataType F8Type)
{
genF8LoadGather(context, N, F8Type);
std::shared_ptr<rocRoller::ExecutableKernel> executableKernel
= context->instructions()->getExecutableKernel();
std::vector<uint8_t> a(N);
for(int i = 0; i < N; i++)
a[i] = i + 10;
auto d_a = make_shared_device(a);
auto d_result = make_shared_device<uint32_t>(N / 4);
KernelArguments kargs;
kargs.append<void*>("result", d_result.get());
kargs.append<void*>("a", d_a.get());
KernelInvocation invocation;
executableKernel->executeKernel(kargs, invocation);
std::vector<uint32_t> result(N / 4);
ASSERT_THAT(
hipMemcpy(result.data(), d_result.get(), sizeof(uint32_t) * N / 4, hipMemcpyDefault),
HasHipSuccess(0));
auto bpi = 1;
auto bpo = 4;
for(int i = 0; i < N / 4; i++)
{
uint32_t expected = a[i] | (a[i + 1] << 8) | (a[i + 2] << 16) | (a[i + 3] << 24);
EXPECT_EQ(result[i], expected) << std::hex << result[i] << " " << expected;
}
}
TEST_P(F8TestGPU, GPU_F8LoadGather)
{
constexpr int N = 4;
if(isLocalDevice())
{
executeF8LoadGather(m_context, N, std::get<rocRoller::DataType>(GetParam()));
}
else
{
genF8LoadGather(m_context, N, std::get<rocRoller::DataType>(GetParam()));
std::vector<char> assembledKernel = m_context->instructions()->assemble();
EXPECT_GT(assembledKernel.size(), 0);
}
}
INSTANTIATE_TEST_SUITE_P(
F8TestGPU,
F8TestGPU,
::testing::Combine(
::testing::Values(GPUArchitectureTarget{GPUArchitectureGFX::GFX942, {.sramecc = true}},
GPUArchitectureTarget{GPUArchitectureGFX::GFX950, {.sramecc = true}},
GPUArchitectureTarget{GPUArchitectureGFX::GFX950, {.xnack = true}}),
::testing::Values(rocRoller::DataType::FP8, rocRoller::DataType::BF8)));
class CPUF8Test : public GenericContextFixture
{
};
template <typename F8Type>
void numberConversion(double fp64)
{
// F8 to FP32
F8Type f8(fp64);
float fp32(f8);
if(!std::isnan(fp64))
EXPECT_FLOAT_EQ(fp32, fp64);
else
EXPECT_TRUE(std::isnan(fp32));
// FP32 to F8
f8 = F8Type(fp32);
if(!std::isnan(fp64))
EXPECT_FLOAT_EQ((double)f8, fp64);
else
EXPECT_TRUE(std::isnan(f8));
}
TEST_F(CPUF8Test, CPUConversions)
{
auto settings = Settings::getInstance();
settings->set(Settings::F8ModeOption, F8Mode::NaNoo);
auto const& FP8ValuesInNaNoo = FloatReference<rocRoller::FP8>::ValuesInNaNooMode;
std::for_each(
FP8ValuesInNaNoo.begin(), FP8ValuesInNaNoo.end(), numberConversion<rocRoller::FP8>);
auto const& BF8ValuesInNaNoo = FloatReference<rocRoller::BF8>::ValuesInNaNooMode;
std::for_each(
BF8ValuesInNaNoo.begin(), BF8ValuesInNaNoo.end(), numberConversion<rocRoller::BF8>);
settings->set(Settings::F8ModeOption, F8Mode::OCP);
auto const& FP8ValuesInOCP = FloatReference<rocRoller::FP8>::ValuesInOCPMode;
std::for_each(
FP8ValuesInOCP.begin(), FP8ValuesInOCP.end(), numberConversion<rocRoller::FP8>);
auto const& BF8ValuesInOCP = FloatReference<rocRoller::BF8>::ValuesInOCPMode;
std::for_each(
BF8ValuesInOCP.begin(), BF8ValuesInOCP.end(), numberConversion<rocRoller::BF8>);
}
TEST_F(CPUF8Test, OutOfBoundsConversions)
{
auto settings = Settings::getInstance();
settings->set(Settings::F8ModeOption, F8Mode::NaNoo);
rocRoller::FP8 nF8;
nF8 = 241.0;
EXPECT_FLOAT_EQ(nF8, 240.0);
nF8 = 256.0;
EXPECT_FLOAT_EQ(nF8, 240.0);
nF8 = 448.0;
EXPECT_FLOAT_EQ(nF8, 240.0);
nF8 = 480.0;
EXPECT_FLOAT_EQ(nF8, 240.0);
nF8 = -241.0;
EXPECT_FLOAT_EQ(nF8, -240.0);
nF8 = -256.0;
EXPECT_FLOAT_EQ(nF8, -240.0);
nF8 = -448.0;
EXPECT_FLOAT_EQ(nF8, -240.0);
nF8 = -480.0;
EXPECT_FLOAT_EQ(nF8, -240.0);
rocRoller::BF8 nBF8;
nBF8 = 57345.0;
EXPECT_FLOAT_EQ(nBF8, 57344.0);
nBF8 = 65536.0;
EXPECT_FLOAT_EQ(nBF8, 57344.0);
nBF8 = 98304.0;
EXPECT_FLOAT_EQ(nBF8, 57344.0);
nBF8 = 114688.0;
EXPECT_FLOAT_EQ(nBF8, 57344.0);
nBF8 = -57345.0;
EXPECT_FLOAT_EQ(nBF8, -57344.0);
nBF8 = -65536.0;
EXPECT_FLOAT_EQ(nBF8, -57344.0);
nBF8 = -98304.0;
EXPECT_FLOAT_EQ(nBF8, -57344.0);
nBF8 = -114688.0;
EXPECT_FLOAT_EQ(nBF8, -57344.0);
settings->set(Settings::F8ModeOption, F8Mode::OCP);
rocRoller::FP8 oF8;
oF8 = 449;
EXPECT_FLOAT_EQ(oF8, 448.0);
oF8 = 479;
EXPECT_FLOAT_EQ(oF8, 448.0);
oF8 = 480;
EXPECT_FLOAT_EQ(oF8, 448.0);
oF8 = 512;
EXPECT_FLOAT_EQ(oF8, 448.0);
oF8 = -449;
EXPECT_FLOAT_EQ(oF8, -448.0);
oF8 = -479;
EXPECT_FLOAT_EQ(oF8, -448.0);
oF8 = -480;
EXPECT_FLOAT_EQ(oF8, -448.0);
oF8 = -512;
EXPECT_FLOAT_EQ(oF8, -448.0);
rocRoller::BF8 oBF8;
oBF8 = 57345.0;
EXPECT_FLOAT_EQ(oBF8, 57344.0);
oBF8 = 65536.0;
EXPECT_FLOAT_EQ(oBF8, 57344.0);
oBF8 = 98304.0;
EXPECT_FLOAT_EQ(oBF8, 57344.0);
oBF8 = 114688.0;
EXPECT_FLOAT_EQ(oBF8, 57344.0);
oBF8 = -57345.0;
EXPECT_FLOAT_EQ(oBF8, -57344.0);
oBF8 = -65536.0;
EXPECT_FLOAT_EQ(oBF8, -57344.0);
oBF8 = -98304.0;
EXPECT_FLOAT_EQ(oBF8, -57344.0);
oBF8 = -114688.0;
EXPECT_FLOAT_EQ(oBF8, -57344.0);
}
template <typename F8Type, F8Mode f8Mode>
void checkSpecialValues(float& f32_inf, float& f32_nan, float& f32_zero)
{
auto settings = Settings::getInstance();
settings->set(Settings::F8ModeOption, f8Mode);
F8Type f8_pos_inf(f32_inf);
F8Type f8_neg_inf(-f32_inf);
if constexpr(f8Mode == F8Mode::NaNoo)
{
// In NaNoo mode, fp8/bf8 use the same value for nan and inf, so we are unable to know
// if the value is nan or inf, and we choose to return nan in both cases.
EXPECT_TRUE(std::isnan(f8_pos_inf));
EXPECT_FALSE(std::isinf(f8_pos_inf));
EXPECT_TRUE(std::isnan(f8_neg_inf));
EXPECT_FALSE(std::isinf(f8_neg_inf));
}
if constexpr(f8Mode == F8Mode::OCP)
{
if constexpr(std::is_same<F8Type, BF8>::value)
{
// In OCP mode, bf8 has +/-inf & NaN as different bit patterns
EXPECT_FALSE(std::isnan(f8_pos_inf));
EXPECT_TRUE(std::isinf(f8_pos_inf));
EXPECT_FALSE(std::isnan(f8_neg_inf));
EXPECT_TRUE(std::isinf(f8_neg_inf));
}
else
{
EXPECT_TRUE(std::isnan(f8_pos_inf));
EXPECT_FALSE(std::isinf(f8_pos_inf));
EXPECT_TRUE(std::isnan(f8_neg_inf));
EXPECT_FALSE(std::isinf(f8_neg_inf));
}
}
F8Type f8_nan(f32_nan);
EXPECT_TRUE(std::isnan(f8_nan));
F8Type f8_zero(f32_zero);
EXPECT_TRUE(std::iszero(f8_zero));
}
TEST_F(CPUF8Test, SpecialValues)
{
union
{
uint32_t bits;
float val;
} f32_inf, f32_nan, f32_zero;
// For single-precision, if all exponent bits are 1 and
// - if mantissa is zero => Inf
// - if mantissa is non-zero => NaN
f32_inf.bits = 0x7F800000;
f32_nan.bits = 0x7F800001;
f32_zero.bits = 0x0;
EXPECT_TRUE(std::isinf(f32_inf.val));
EXPECT_TRUE(std::isnan(f32_nan.val));
checkSpecialValues<rocRoller::FP8, F8Mode::NaNoo>(f32_inf.val, f32_nan.val, f32_zero.val);
checkSpecialValues<rocRoller::BF8, F8Mode::NaNoo>(f32_inf.val, f32_nan.val, f32_zero.val);
checkSpecialValues<rocRoller::FP8, F8Mode::OCP>(f32_inf.val, f32_nan.val, f32_zero.val);
checkSpecialValues<rocRoller::BF8, F8Mode::OCP>(f32_inf.val, f32_nan.val, f32_zero.val);
}
}
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