[SWDEV-544092] Fix Navi process float conversion (#579)

Signed-off-by: AL Musaffar, Yazen <Yazen.ALMusaffar@amd.com>

[ROCm/amdsmi commit: 27cae85910]

projects/amdsmi/amdsmi_cli/amdsmi_commands.py

@@ -6978,8 +6978,16 @@ class AMDSMICommands():
                     proc_info_dict['gtt'] = self.helpers.convert_bytes_to_readable(proc['memory_usage']['gtt_mem'])
                     proc_info_dict['vram'] = self.helpers.convert_bytes_to_readable(proc['memory_usage']['vram_mem'])
                     proc_info_dict['mem_usage'] = self.helpers.convert_bytes_to_readable(proc['mem'])
-                    num_cu = float(proc['cu_occupancy'])
-                    proc_info_dict['cu_occupancy'] = {"current_cu": num_cu, "total_num_cu": total_num_cu}
+                    # Handle cu_occupancy conversion safely
+                    try:
+                        if proc['cu_occupancy'] != "N/A" and total_num_cu != "N/A":
+                            num_cu = float(proc['cu_occupancy'])
+                            proc_info_dict['cu_occupancy'] = {"current_cu": num_cu, "total_num_cu": total_num_cu}
+                        else:
+                            proc_info_dict['cu_occupancy'] = {"current_cu": "N/A", "total_num_cu": total_num_cu}
+                    except (ValueError, TypeError):
+                        proc_info_dict['cu_occupancy'] = {"current_cu": "N/A", "total_num_cu": total_num_cu}
+                    
                     all_process_list.append(proc_info_dict)
             except amdsmi_exception.AmdSmiLibraryException as e:
                 logging.debug("Failed to get process list for gpu %s | %s", gpu_id, e.get_error_info())