Computer Organization & Architecture

Use this for “A MIPS beq at 0x00400020 has offset 3. Where does the branch go if it is taken?”

Use this for “Which addressing mode does lw x5, 8(x2) use? And beq x5, x6, loop?”

Use this for “Half the instructions take 1 cycle, 30% take 2 and 20% take 3. What is the average CPI?”

Use this for “80% of a program’s time is made 4 times faster. What is the overall speedup, and what is its limit?”

Use this for “The units take 0.2, 0.1, 0.2, 0.2 and 0.1 ns. What clock can a single-cycle CPU run?”

Use this for “Loads are 25% of instructions and 40% of them stall 1 cycle; branches are 20%, 10% mispredicted at 3 cycles. Find the CPI.”

Use this for “add x1, x2, x3 is followed by sub x4, x1, x5. Which hazard is it?”

Use this for “L1 hits in 1 cycle and misses 5% of the time; L2 hits in 10 cycles and misses 20% locally; memory takes 100 cycles. What is the AMAT?”

Use this for “A system has 32-bit virtual addresses, 4 KiB pages and 4-byte page table entries. How big is a flat page table?”