UVM Interview Questions in 2024

The Universal Verification Methodology (UVM) is a standardized methodology for verifying digital designs that helps develop a reusable, modular, and well-structured verification test bench. UVM provides pre-defined base classes and allows users to extend and reuse pre-defined methods.

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UVM uses a set of rules and approaches for verification that allows different teams to collaborate more effectively and understand each other’s code. This helps to improve communication across teams.

• Why is UVM methodology necessary?
• Distinction between uvm_object and uvm_component
• Differences between uvm_transaction and uvm_sequence_item
• Comparison of create and new()
• Contrast between copy and clone
• Difference between uvm_resource_db and uvm_config_db
• What are severity and verbosity in UVM?
• Differences between sequence and sequencer
• How to execute any test case in UVM?
• Create a simple uvm sequence template and explain each line.
• How is a scoreboard connected to different components?
• What is the UVM factory and its use?
• Why were phases introduced in UVM? What are all phases present in UVM?
• What approach does build_phase utilize and why?
• Draw and explain the UVM verification environment.
• Which UVM phases consume time?
• Which phases are functions and tasks in UVM?
• Why use the super keyword in phases like super.build_phase and super.main_phase?
• Differences between uvm_do and uvm_rand_send
• What are bottom-up and top-down approaches in UVM phases?
• How do uvm_config_db set and get work?
• What is an analysis port?
• What are pre_body and post_body used for in a sequence?
• What is an active and passive agent?
• Distinction between UVM subscriber and UVM scoreboard
• What is a uvm objection and why is it needed?
• Different ways to exit code execution?
• What is a sequence item in UVM?
• Explain how a sequence starts.
• How do sequence, driver, and sequencer communicate?
• What are lock and grab methods?
• What is the RAL model and its application?
• Explain front-door and back-door register access.
• What is TLM?
• Define TLM FIFO.
• What is the run_test function?
• Explain the generalized code structure for a UVM monitor and scoreboard.
• What is an in-order and out-of-order scoreboard?

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