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//===- llvm-offload-device-info.cpp - Print liboffload properties ---------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This is a command line utility that, by using the new liboffload API, prints
// all devices and properties
//
//===----------------------------------------------------------------------===//
#include <OffloadAPI.h>
#include <iostream>
#include <vector>
#define OFFLOAD_ERR(X) \
if (auto Err = X) { \
return Err; \
}
enum class PrintKind {
NORMAL,
FP_FLAGS,
};
template <typename T, PrintKind PK = PrintKind::NORMAL>
void doWrite(std::ostream &S, T &&Val) {
S << Val;
}
template <>
void doWrite<ol_platform_backend_t>(std::ostream &S,
ol_platform_backend_t &&Val) {
switch (Val) {
case OL_PLATFORM_BACKEND_UNKNOWN:
S << "UNKNOWN";
break;
case OL_PLATFORM_BACKEND_CUDA:
S << "CUDA";
break;
case OL_PLATFORM_BACKEND_AMDGPU:
S << "AMDGPU";
break;
case OL_PLATFORM_BACKEND_HOST:
S << "HOST";
break;
default:
S << "<< INVALID >>";
break;
}
}
template <>
void doWrite<ol_device_type_t>(std::ostream &S, ol_device_type_t &&Val) {
switch (Val) {
case OL_DEVICE_TYPE_GPU:
S << "GPU";
break;
case OL_DEVICE_TYPE_CPU:
S << "CPU";
break;
case OL_DEVICE_TYPE_HOST:
S << "HOST";
break;
default:
S << "<< INVALID >>";
break;
}
}
template <>
void doWrite<ol_dimensions_t>(std::ostream &S, ol_dimensions_t &&Val) {
S << "{x: " << Val.x << ", y: " << Val.y << ", z: " << Val.z << "}";
}
template <>
void doWrite<ol_device_fp_capability_flags_t, PrintKind::FP_FLAGS>(
std::ostream &S, ol_device_fp_capability_flags_t &&Val) {
S << Val << " {";
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_CORRECTLY_ROUNDED_DIVIDE_SQRT) {
S << " CORRECTLY_ROUNDED_DIVIDE_SQRT";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_ROUND_TO_NEAREST) {
S << " ROUND_TO_NEAREST";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_ROUND_TO_ZERO) {
S << " ROUND_TO_ZERO";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_ROUND_TO_INF) {
S << " ROUND_TO_INF";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_INF_NAN) {
S << " INF_NAN";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_DENORM) {
S << " DENORM";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_FMA) {
S << " FMA";
}
if (Val & OL_DEVICE_FP_CAPABILITY_FLAG_SOFT_FLOAT) {
S << " SOFT_FLOAT";
}
S << " }";
}
template <typename T>
ol_result_t printPlatformValue(std::ostream &S, ol_platform_handle_t Plat,
ol_platform_info_t Info, const char *Desc) {
S << Desc << ": ";
if constexpr (std::is_pointer_v<T>) {
std::vector<uint8_t> Val;
size_t Size;
OFFLOAD_ERR(olGetPlatformInfoSize(Plat, Info, &Size));
Val.resize(Size);
OFFLOAD_ERR(olGetPlatformInfo(Plat, Info, sizeof(Val), Val.data()));
doWrite(S, reinterpret_cast<T>(Val.data()));
} else {
T Val;
OFFLOAD_ERR(olGetPlatformInfo(Plat, Info, sizeof(Val), &Val));
doWrite(S, std::move(Val));
}
S << "\n";
return OL_SUCCESS;
}
template <typename T, PrintKind PK = PrintKind::NORMAL>
ol_result_t printDeviceValue(std::ostream &S, ol_device_handle_t Dev,
ol_device_info_t Info, const char *Desc,
const char *Units = nullptr) {
S << Desc << ": ";
if constexpr (std::is_pointer_v<T>) {
std::vector<uint8_t> Val;
size_t Size;
OFFLOAD_ERR(olGetDeviceInfoSize(Dev, Info, &Size));
Val.resize(Size);
OFFLOAD_ERR(olGetDeviceInfo(Dev, Info, Size, Val.data()));
doWrite<T, PK>(S, reinterpret_cast<T>(Val.data()));
} else {
T Val;
OFFLOAD_ERR(olGetDeviceInfo(Dev, Info, sizeof(Val), &Val));
doWrite<T, PK>(S, std::move(Val));
}
if (Units)
S << " " << Units;
S << "\n";
return OL_SUCCESS;
}
ol_result_t printDevice(std::ostream &S, ol_device_handle_t D) {
ol_platform_handle_t Platform;
OFFLOAD_ERR(
olGetDeviceInfo(D, OL_DEVICE_INFO_PLATFORM, sizeof(Platform), &Platform));
std::vector<char> Name;
size_t NameSize;
OFFLOAD_ERR(olGetDeviceInfoSize(D, OL_DEVICE_INFO_PRODUCT_NAME, &NameSize))
Name.resize(NameSize);
OFFLOAD_ERR(
olGetDeviceInfo(D, OL_DEVICE_INFO_PRODUCT_NAME, NameSize, Name.data()));
S << "[" << Name.data() << "]\n";
OFFLOAD_ERR(printPlatformValue<const char *>(
S, Platform, OL_PLATFORM_INFO_NAME, "Platform Name"));
OFFLOAD_ERR(printPlatformValue<const char *>(
S, Platform, OL_PLATFORM_INFO_VENDOR_NAME, "Platform Vendor Name"));
OFFLOAD_ERR(printPlatformValue<const char *>(
S, Platform, OL_PLATFORM_INFO_VERSION, "Platform Version"));
OFFLOAD_ERR(printPlatformValue<ol_platform_backend_t>(
S, Platform, OL_PLATFORM_INFO_BACKEND, "Platform Backend"));
OFFLOAD_ERR(
printDeviceValue<const char *>(S, D, OL_DEVICE_INFO_NAME, "Name"));
OFFLOAD_ERR(printDeviceValue<const char *>(S, D, OL_DEVICE_INFO_PRODUCT_NAME,
"Product Name"));
OFFLOAD_ERR(printDeviceValue<const char *>(S, D, OL_DEVICE_INFO_UID, "UID"));
OFFLOAD_ERR(
printDeviceValue<ol_device_type_t>(S, D, OL_DEVICE_INFO_TYPE, "Type"));
OFFLOAD_ERR(printDeviceValue<const char *>(
S, D, OL_DEVICE_INFO_DRIVER_VERSION, "Driver Version"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(
S, D, OL_DEVICE_INFO_MAX_WORK_GROUP_SIZE, "Max Work Group Size"));
OFFLOAD_ERR(printDeviceValue<ol_dimensions_t>(
S, D, OL_DEVICE_INFO_MAX_WORK_GROUP_SIZE_PER_DIMENSION,
"Max Work Group Size Per Dimension"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_MAX_WORK_SIZE,
"Max Work Size"));
OFFLOAD_ERR(printDeviceValue<ol_dimensions_t>(
S, D, OL_DEVICE_INFO_MAX_WORK_SIZE_PER_DIMENSION,
"Max Work Size Per Dimension"));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_VENDOR_ID, "Vendor ID"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NUM_COMPUTE_UNITS,
"Num Compute Units"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(
S, D, OL_DEVICE_INFO_MAX_CLOCK_FREQUENCY, "Max Clock Frequency", "MHz"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_MEMORY_CLOCK_RATE,
"Memory Clock Rate", "MHz"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_ADDRESS_BITS,
"Address Bits"));
OFFLOAD_ERR(printDeviceValue<uint64_t>(
S, D, OL_DEVICE_INFO_MAX_MEM_ALLOC_SIZE, "Max Mem Allocation Size", "B"));
OFFLOAD_ERR(printDeviceValue<uint64_t>(S, D, OL_DEVICE_INFO_GLOBAL_MEM_SIZE,
"Global Mem Size", "B"));
OFFLOAD_ERR(
printDeviceValue<uint64_t>(S, D, OL_DEVICE_INFO_WORK_GROUP_LOCAL_MEM_SIZE,
"Work Group Shared Mem Size", "B"));
OFFLOAD_ERR(
(printDeviceValue<ol_device_fp_capability_flags_t, PrintKind::FP_FLAGS>(
S, D, OL_DEVICE_INFO_SINGLE_FP_CONFIG,
"Single Precision Floating Point Capability")));
OFFLOAD_ERR(
(printDeviceValue<ol_device_fp_capability_flags_t, PrintKind::FP_FLAGS>(
S, D, OL_DEVICE_INFO_DOUBLE_FP_CONFIG,
"Double Precision Floating Point Capability")));
OFFLOAD_ERR(
(printDeviceValue<ol_device_fp_capability_flags_t, PrintKind::FP_FLAGS>(
S, D, OL_DEVICE_INFO_HALF_FP_CONFIG,
"Half Precision Floating Point Capability")));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_CHAR,
"Native Vector Width For Char"));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_SHORT,
"Native Vector Width For Short"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(S, D,
OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_INT,
"Native Vector Width For Int"));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_LONG,
"Native Vector Width For Long"));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_FLOAT,
"Native Vector Width For Float"));
OFFLOAD_ERR(printDeviceValue<uint32_t>(
S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_DOUBLE,
"Native Vector Width For Double"));
OFFLOAD_ERR(
printDeviceValue<uint32_t>(S, D, OL_DEVICE_INFO_NATIVE_VECTOR_WIDTH_HALF,
"Native Vector Width For Half"));
return OL_SUCCESS;
}
ol_result_t printRoot(std::ostream &S) {
OFFLOAD_ERR(olInit());
S << "Liboffload Version: " << OL_VERSION_MAJOR << "." << OL_VERSION_MINOR
<< "." << OL_VERSION_PATCH << "\n";
std::vector<ol_device_handle_t> Devices;
OFFLOAD_ERR(olIterateDevices(
[](ol_device_handle_t Device, void *UserData) {
reinterpret_cast<decltype(Devices) *>(UserData)->push_back(Device);
return true;
},
&Devices));
S << "Num Devices: " << Devices.size() << "\n";
for (auto &D : Devices) {
S << "\n";
OFFLOAD_ERR(printDevice(S, D));
}
OFFLOAD_ERR(olShutDown());
return OL_SUCCESS;
}
int main(int argc, char **argv) {
auto Err = printRoot(std::cout);
if (Err) {
std::cerr << "[Liboffload error " << Err->Code << "]: " << Err->Details
<< "\n";
return 1;
}
return 0;
}
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