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Merged
merged 10 commits into from
Mar 17, 2025
Merged

vulkan: subgroup size tuning #12087

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53b69a3
vulkan: subgroup size test
daniandtheweb Mar 8, 2025
85e15e6
Vulkan: Add device architecture enum and logic to recognize AMD gener…
0cc4m Mar 8, 2025
7695541
vulkan: use new architecture logic to specify subgroup size
daniandtheweb Mar 8, 2025
43c3e6f
Initial vulkan subgroup size tuning for RDNA3
daniandtheweb Mar 11, 2025
c41619d
vulkan: commonize RDNA subgroup tuning
daniandtheweb Mar 12, 2025
1c17520
vulkan: override subgroup size if required_subgroup_size = 0
daniandtheweb Mar 12, 2025
afb5c2d
vulkan: disable warp 32 for RDNA3
daniandtheweb Mar 12, 2025
29e8104
vulkan: fine tuned RDNA1 subgroup sizes
daniandtheweb Mar 13, 2025
bf7352e
vulkan: adjusted subgroup size map
daniandtheweb Mar 16, 2025
d43537a
vulkan: fixed RDNA2 subgroup map
daniandtheweb Mar 16, 2025
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155 changes: 145 additions & 10 deletions ggml/src/ggml-vulkan/ggml-vulkan.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,66 @@ static void ggml_vk_destroy_buffer(vk_buffer& buf);

static constexpr uint32_t mul_mat_vec_max_cols = 8;

enum vk_device_architecture {
OTHER,
AMD_GCN,
AMD_RDNA1,
AMD_RDNA2,
AMD_RDNA3,
};

static vk_device_architecture get_device_architecture(const vk::PhysicalDevice& device) {
vk::PhysicalDeviceProperties props = device.getProperties();

if (props.vendorID == VK_VENDOR_ID_AMD) {
const std::vector<vk::ExtensionProperties> ext_props = device.enumerateDeviceExtensionProperties();

bool amd_shader_core_properties = false;
bool integer_dot_product = false;
bool subgroup_size_control = false;

for (const auto& properties : ext_props) {
if (strcmp("VK_AMD_shader_core_properties", properties.extensionName) == 0) {
amd_shader_core_properties = true;
} else if (strcmp("VK_KHR_shader_integer_dot_product", properties.extensionName) == 0) {
integer_dot_product = true;
} else if (strcmp("VK_EXT_subgroup_size_control", properties.extensionName) == 0) {
subgroup_size_control = true;
}
}

if (!amd_shader_core_properties || !integer_dot_product || !subgroup_size_control) {
return vk_device_architecture::OTHER;
}

vk::PhysicalDeviceProperties2 props2;
vk::PhysicalDeviceShaderCorePropertiesAMD shader_core_props_amd;
vk::PhysicalDeviceShaderIntegerDotProductPropertiesKHR integer_dot_props;
vk::PhysicalDeviceSubgroupSizeControlPropertiesEXT subgroup_size_control_props;

props2.pNext = &shader_core_props_amd;
shader_core_props_amd.pNext = &integer_dot_props;
integer_dot_props.pNext = &subgroup_size_control_props;

device.getProperties2(&props2);

if (subgroup_size_control_props.maxSubgroupSize == 64 && subgroup_size_control_props.minSubgroupSize == 64) {
return vk_device_architecture::AMD_GCN;
}
if (subgroup_size_control_props.maxSubgroupSize == 64 && subgroup_size_control_props.minSubgroupSize == 32) {
// RDNA
if (shader_core_props_amd.wavefrontsPerSimd == 20) {
return vk_device_architecture::AMD_RDNA1;
}
if (integer_dot_props.integerDotProduct4x8BitPackedMixedSignednessAccelerated) {
return vk_device_architecture::AMD_RDNA3;
}
return vk_device_architecture::AMD_RDNA2;
}
}
return vk_device_architecture::OTHER;
}

struct vk_device_struct {
std::mutex mutex;

Expand All @@ -161,6 +221,7 @@ struct vk_device_struct {
bool pipeline_robustness;
vk::Device device;
uint32_t vendor_id;
vk_device_architecture architecture;
vk_queue compute_queue;
vk_queue transfer_queue;
bool single_queue;
Expand Down Expand Up @@ -1445,6 +1506,73 @@ static bool ggml_vk_matmul_shmem_support(const vk_device& device, const std::vec
return supported;
}

struct GpuPipelineConfig {
// GPU architecture identifier.
// Example: vk_device_architecture::AMD_GCN
vk_device_architecture arch;

// Mapping of pipeline names to their specific subgroup sizes.
// Example: {"soft_max_f32", 64}
std::unordered_map<std::string, uint32_t> pipelines;

// Default subgroup size for this GPU.
// Defaults to 0 if not explicitly provided.
uint32_t default_subgroup_size = 0;
};

// Common pipeline configuration for RDNA GPUs.
static const std::unordered_map<std::string, uint32_t> rdna_common_pipelines = {
{"soft_max", 64}, {"im2col", 64},
};

// RDNA1 pipeline configuration.
static std::unordered_map<std::string, uint32_t> rdna1_pipelines = rdna_common_pipelines;
static const bool rdna1_initialized = (rdna1_pipelines.insert({
{"argmax", 64}, {"mul_mat_vec", 64},
{"mul_mat_vec_f16", 32}, {"mul_mat_vec_f32_f16", 32}
}), true);

static constexpr uint32_t RDNA_DEFAULT_SUBGROUP_SIZE = 32;

// Define configurations for different GPUs.
static std::vector<GpuPipelineConfig> gpu_pipeline_configs = {
{
vk_device_architecture::AMD_RDNA1,
{
rdna1_pipelines,
},
RDNA_DEFAULT_SUBGROUP_SIZE
},
{
vk_device_architecture::AMD_RDNA2,
{
rdna_common_pipelines,
},
RDNA_DEFAULT_SUBGROUP_SIZE
},
};

static uint32_t get_subgroup_size(const std::string &pipeline_name, const vk_device_architecture &arch) {
for (const auto &config : gpu_pipeline_configs) {
if (config.arch == arch) {
auto pipIt = config.pipelines.find(pipeline_name);
if (pipIt != config.pipelines.end()) {
return pipIt->second;
}
std::vector<std::pair<std::string, uint32_t>> sorted_pipelines(config.pipelines.begin(), config.pipelines.end());
std::sort(sorted_pipelines.begin(), sorted_pipelines.end(),
[](const auto &a, const auto &b) { return a.first.size() > b.first.size(); });
for (const auto &entry : sorted_pipelines) {
if (pipeline_name.find(entry.first) != std::string::npos) {
return entry.second;
}
}
return config.default_subgroup_size;
}
}
return 0; // If no matching configuration is found
}

static void ggml_vk_load_shaders(vk_device& device) {
VK_LOG_DEBUG("ggml_vk_load_shaders(" << device->name << ")");

Expand Down Expand Up @@ -1571,6 +1699,10 @@ static void ggml_vk_load_shaders(vk_device& device) {
uint32_t parameter_count, uint32_t push_constant_size, std::array<uint32_t, 3> wg_denoms, const std::vector<uint32_t>& specialization_constants,
uint32_t align, bool disable_robustness = false, bool require_full_subgroups = false, uint32_t required_subgroup_size = 0) {

if (!require_full_subgroups && required_subgroup_size == 0) {
required_subgroup_size = get_subgroup_size(name, device->architecture);
}

if (!pipeline) {
pipeline = std::make_shared<vk_pipeline_struct>();
pipeline->name = name;
Expand Down Expand Up @@ -2247,7 +2379,7 @@ static void ggml_vk_load_shaders(vk_device& device) {
device->need_compiles = false;
}

static bool ggml_vk_khr_cooperative_matrix_support(const vk::PhysicalDeviceProperties& props, const vk::PhysicalDeviceDriverProperties& driver_props);
static bool ggml_vk_khr_cooperative_matrix_support(const vk::PhysicalDeviceProperties& props, const vk::PhysicalDeviceDriverProperties& driver_props, vk_device_architecture arch);

static vk_device ggml_vk_get_device(size_t idx) {
VK_LOG_DEBUG("ggml_vk_get_device(" << idx << ")");
Expand Down Expand Up @@ -2276,6 +2408,8 @@ static vk_device ggml_vk_get_device(size_t idx) {
device->physical_device = physical_devices[dev_num];
const std::vector<vk::ExtensionProperties> ext_props = device->physical_device.enumerateDeviceExtensionProperties();

device->architecture = get_device_architecture(device->physical_device);

const char* GGML_VK_PREFER_HOST_MEMORY = getenv("GGML_VK_PREFER_HOST_MEMORY");
device->prefer_host_memory = GGML_VK_PREFER_HOST_MEMORY != nullptr;

Expand All @@ -2288,7 +2422,6 @@ static vk_device ggml_vk_get_device(size_t idx) {
bool coopmat2_support = false;
device->coopmat_support = false;

// Check if maintenance4 is supported
for (const auto& properties : ext_props) {
if (strcmp("VK_KHR_maintenance4", properties.extensionName) == 0) {
maintenance4_support = true;
Expand Down Expand Up @@ -2401,7 +2534,7 @@ static vk_device ggml_vk_get_device(size_t idx) {

device->fp16 = !force_disable_f16 && fp16_storage && fp16_compute;

if (!ggml_vk_khr_cooperative_matrix_support(device->properties, driver_props)) {
if (!ggml_vk_khr_cooperative_matrix_support(device->properties, driver_props, device->architecture)) {
device->coopmat_support = false;
}

Expand Down Expand Up @@ -2779,7 +2912,10 @@ static void ggml_vk_print_gpu_info(size_t idx) {
subgroup_props.pNext = &driver_props;
physical_device.getProperties2(&props2);

const size_t subgroup_size = subgroup_props.subgroupSize;
vk_device_architecture arch = get_device_architecture(physical_device);
uint32_t default_subgroup_size = get_subgroup_size("", arch);
const size_t subgroup_size = (default_subgroup_size != 0) ? default_subgroup_size : subgroup_props.subgroupSize;

const bool uma = props2.properties.deviceType == vk::PhysicalDeviceType::eIntegratedGpu;

bool fp16_storage = false;
Expand All @@ -2805,7 +2941,9 @@ static void ggml_vk_print_gpu_info(size_t idx) {
}
}

if (!ggml_vk_khr_cooperative_matrix_support(props2.properties, driver_props)) {
const vk_device_architecture device_architecture = get_device_architecture(physical_device);

if (!ggml_vk_khr_cooperative_matrix_support(props2.properties, driver_props, device_architecture)) {
coopmat_support = false;
}

Expand Down Expand Up @@ -8826,18 +8964,15 @@ static bool ggml_vk_instance_portability_enumeration_ext_available(const std::ve
UNUSED(instance_extensions);
}

static bool ggml_vk_khr_cooperative_matrix_support(const vk::PhysicalDeviceProperties& props, const vk::PhysicalDeviceDriverProperties& driver_props) {
static bool ggml_vk_khr_cooperative_matrix_support(const vk::PhysicalDeviceProperties& props, const vk::PhysicalDeviceDriverProperties& driver_props, vk_device_architecture arch) {
switch (props.vendorID) {
case VK_VENDOR_ID_INTEL:
// Intel drivers don't support coopmat properly yet
return false;
case VK_VENDOR_ID_AMD:
if (driver_props.driverID == vk::DriverId::eAmdProprietary || driver_props.driverID == vk::DriverId::eAmdOpenSource) {
// Workaround for AMD proprietary driver reporting support on all GPUs
const std::string name = props.deviceName;
return name.rfind("AMD Radeon RX 7", 0) == 0 || name.rfind("AMD Radeon(TM) RX 7", 0) == 0 || // RDNA 3 consumer GPUs
name.rfind("AMD Radeon PRO W7", 0) == 0 || name.rfind("AMD Radeon(TM) PRO W7", 0) == 0 || // RDNA 3 workstation GPUs
name.rfind("AMD Radeon 7", 0) == 0 || name.rfind("AMD Radeon(TM) 7", 0) == 0; // RDNA 3 APUs
return arch == vk_device_architecture::AMD_RDNA3;
}
return true;
default:
Expand Down
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