Merge pull request #69 from RadeonOpenCompute/print_UUID_Topology

Print UUID of device as part of platform topology

rocm_bandwidth_test.hpp

@@ -68,6 +68,7 @@ typedef struct agent_info {
   hsa_agent_t agent_;
   hsa_device_type_t device_type_;
   char name_[64];     // Size specified in public header file
+  char uuid_[24];     // Unique ID of the device
   char bdf_id_[16];   // Bus (8-bits), Device (5-bits), Function (3-bits)
 
 } agent_info_t;

rocm_bandwidth_test_print.cpp

@@ -164,6 +164,10 @@ void RocmBandwidthTest::PrintTopology() {
       std::cout << "";
       std::cout.width(format);
       std::cout << "  Device  BDF:                            " << node.agent.bdf_id_ << std::endl;
+      std::cout.width(format);
+      std::cout << "";
+      std::cout.width(format);
+      std::cout << "  Device UUID:                            " << node.agent.uuid_ << std::endl;
     }
 
     // Print pool info
@@ -297,6 +301,7 @@ void RocmBandwidthTest::PrintAgentsList() {
     } else if (HSA_DEVICE_TYPE_GPU == node.agent.device_type_) {
       std::cout << "  Device Type:                            GPU" << std::endl;
       std::cout << "  Device  BDF:                            " << node.agent.bdf_id_ << std::endl;
+      std::cout << "  Device UUID:                            " << node.agent.uuid_ << std::endl;
     }
   }
   std::cout << std::endl;

rocm_bandwidth_test_topology.cpp

@@ -191,7 +191,14 @@ hsa_status_t AgentInfo(hsa_agent_t agent, void* data) {
   status = hsa_agent_get_info(agent,
                       (hsa_agent_info_t)HSA_AMD_AGENT_INFO_PRODUCT_NAME,
                       (void *)&agent_info.name_[0]);
+  
+  // Aqcuire GPU specific properties
+  //    - BDF (a 32-bit integer)
+  //    - UUID (a 21 char string including nil)
   if (device_type == HSA_DEVICE_TYPE_GPU) {
+    status = hsa_agent_get_info(agent,
+                      (hsa_agent_info_t)HSA_AMD_AGENT_INFO_UUID,
+                      agent_info.uuid_);
     uint32_t bdf_id = 0;
     status = hsa_agent_get_info(agent,
                       (hsa_agent_info_t)HSA_AMD_AGENT_INFO_BDFID,