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vulkan: set all memory allocations to high priority (#17624) 

* vulkan: set all memory allocations to high priority

* gate by env var
This commit is contained in:
Jeff Bolz 2025-12-05 14:21:04 -06:00 committed by GitHub
parent 8160b38a5f
commit 93bb92664e
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1 changed files with 21 additions and 1 deletions
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22
ggml/src/ggml-vulkan/ggml-vulkan.cpp
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@ -519,6 +519,7 @@ struct vk_device_struct {
bool fp16;
bool bf16;
bool pipeline_robustness;
bool memory_priority;
vk::Device device;
uint32_t vendor_id;
vk::DriverId driver_id;
@ -2369,7 +2370,13 @@ static vk_buffer ggml_vk_create_buffer(vk_device& device, size_t size, const std
vk::PhysicalDeviceMemoryProperties mem_props = device->physical_device.getMemoryProperties();
const vk::MemoryAllocateFlagsInfo mem_flags_info { mem_flags };
const vk::MemoryPriorityAllocateInfoEXT mem_priority_info { 1.0f };
vk::MemoryAllocateFlagsInfo mem_flags_info { mem_flags };
if (device->memory_priority) {
mem_flags_info.setPNext(&mem_priority_info);
}
for (auto it = req_flags_list.begin(); it != req_flags_list.end(); it++) {
const auto & req_flags = *it;
@ -4340,6 +4347,9 @@ static vk_device ggml_vk_get_device(size_t idx) {
#endif
} else if (strcmp("VK_KHR_pipeline_executable_properties", properties.extensionName) == 0) {
pipeline_executable_properties_support = true;
} else if (strcmp("VK_EXT_memory_priority", properties.extensionName) == 0 &&
getenv("GGML_VK_ENABLE_MEMORY_PRIORITY")) {
device->memory_priority = true;
}
}
@ -4531,6 +4541,16 @@ static vk_device ggml_vk_get_device(size_t idx) {
device_extensions.push_back("VK_EXT_pipeline_robustness");
}
VkPhysicalDeviceMemoryPriorityFeaturesEXT memory_priority_features;
memory_priority_features.pNext = nullptr;
memory_priority_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PRIORITY_FEATURES_EXT;
memory_priority_features.memoryPriority = VK_FALSE;
if (device->memory_priority) {
last_struct->pNext = (VkBaseOutStructure *)&memory_priority_features;
last_struct = (VkBaseOutStructure *)&memory_priority_features;
device_extensions.push_back("VK_EXT_memory_priority");
}
VkPhysicalDeviceSubgroupSizeControlFeaturesEXT subgroup_size_control_features;
subgroup_size_control_features.pNext = nullptr;
subgroup_size_control_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT;