Hardware interview practice
Analysis FIFO backpressure
A monitor writes much faster than a scoreboard drains a UVM transaction-level modeling (TLM) analysis FIFO, uvm_tlm_analysis_fifo. Why can memory grow without slowing the monitor?
Choose one
Answer choices
- A. The monitor's write function waits for scoreboard.get before returning
- B. The FIFO discards every transaction after the first by definition
- C. The analysis FIFO provides a nonblocking analysis write and is unbounded in the mainstream UVM implementation, so it decouples rather than backpressures the producer
- D. The FIFO converts excess transactions into phase objections