0027-vulkan-get-GPU-ID-ollama-v0.11.5.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Xiaodong Ye <xiaodong.ye@mthreads.com>
Date: Mon, 18 Aug 2025 12:48:07 +0800
Subject: [PATCH] vulkan: get GPU ID (ollama v0.11.5)

Signed-off-by: Xiaodong Ye <xiaodong.ye@mthreads.com>
---
 ggml/src/ggml-vulkan/ggml-vulkan.cpp | 37 ++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/ggml/src/ggml-vulkan/ggml-vulkan.cpp b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
index 061cd078..adea7783 100644
--- a/ggml/src/ggml-vulkan/ggml-vulkan.cpp
+++ b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
@@ -11588,6 +11588,29 @@ static void ggml_vk_get_device_description(int device, char * description, size_
     snprintf(description, description_size, "%s", props.deviceName.data());
 }

+static std::string ggml_vk_get_device_id(int device) {
+    ggml_vk_instance_init();
+
+    std::vector<vk::PhysicalDevice> devices = vk_instance.instance.enumeratePhysicalDevices();
+
+    vk::PhysicalDeviceProperties2 props;
+    vk::PhysicalDeviceIDProperties deviceIDProps;
+    props.pNext = &deviceIDProps;
+    devices[device].getProperties2(&props);
+
+    const auto& uuid = deviceIDProps.deviceUUID;
+    char id[64];
+    snprintf(id, sizeof(id),
+        "GPU-%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+        uuid[0], uuid[1], uuid[2], uuid[3],
+        uuid[4], uuid[5],
+        uuid[6], uuid[7],
+        uuid[8], uuid[9],
+        uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]
+    );
+    return std::string(id);
+}
+
 // backend interface

 #define UNUSED GGML_UNUSED
@@ -12394,6 +12417,12 @@ void ggml_backend_vk_get_device_description(int device, char * description, size
     ggml_vk_get_device_description(dev_idx, description, description_size);
 }

+std::string ggml_backend_vk_get_device_id(int device) {
+    GGML_ASSERT(device < (int) vk_instance.device_indices.size());
+    int dev_idx = vk_instance.device_indices[device];
+    return ggml_vk_get_device_id(dev_idx);
+}
+
 void ggml_backend_vk_get_device_memory(int device, size_t * free, size_t * total) {
     GGML_ASSERT(device < (int) vk_instance.device_indices.size());
     GGML_ASSERT(device < (int) vk_instance.device_supports_membudget.size());
@@ -12481,6 +12510,7 @@ struct ggml_backend_vk_device_context {
     std::string description;
     bool is_integrated_gpu;
     std::string pci_bus_id;
+    std::string id;
 };

 static const char * ggml_backend_vk_device_get_name(ggml_backend_dev_t dev) {
@@ -12493,6 +12523,11 @@ static const char * ggml_backend_vk_device_get_description(ggml_backend_dev_t de
     return ctx->description.c_str();
 }

+static const char * ggml_backend_vk_device_get_id(ggml_backend_dev_t dev) {
+    ggml_backend_vk_device_context * ctx = (ggml_backend_vk_device_context *)dev->context;
+    return ctx->id.c_str();
+}
+
 static void ggml_backend_vk_device_get_memory(ggml_backend_dev_t device, size_t * free, size_t * total) {
     ggml_backend_vk_device_context * ctx = (ggml_backend_vk_device_context *)device->context;
     ggml_backend_vk_get_device_memory(ctx->device, free, total);
@@ -12519,6 +12554,7 @@ static void ggml_backend_vk_device_get_props(ggml_backend_dev_t dev, struct ggml

     props->name        = ggml_backend_vk_device_get_name(dev);
     props->description = ggml_backend_vk_device_get_description(dev);
+    props->id          = ggml_backend_vk_device_get_id(dev);
     props->type        = ggml_backend_vk_device_get_type(dev);
     props->device_id   = ctx->pci_bus_id.empty() ? nullptr : ctx->pci_bus_id.c_str();
     ggml_backend_vk_device_get_memory(dev, &props->memory_free, &props->memory_total);
@@ -12965,6 +13001,7 @@ static ggml_backend_dev_t ggml_backend_vk_reg_get_device(ggml_backend_reg_t reg,
                 ctx->description = desc;
                 ctx->is_integrated_gpu = ggml_backend_vk_get_device_type(i) == vk::PhysicalDeviceType::eIntegratedGpu;
                 ctx->pci_bus_id = ggml_backend_vk_get_device_pci_id(i);
+                ctx->id = ggml_backend_vk_get_device_id(i);
                 devices.push_back(new ggml_backend_device {
                     /* .iface   = */ ggml_backend_vk_device_i,
                     /* .reg     = */ reg,
-- 
2.51.0