Assume that X1 is initialized to 11 and X2 is initialized to 22. Suppose you executed the code below on a version of the pipeline from COD Section 4.5 (An overview of pipelining) that does not handle data hazards (i. e., the programmer is responsible for addressing data hazards by inserting NOP instructions where necessary). What would the final values of registers X3 and X4 be

What key should you press and hold to select and open multiple files at one time? enter alt control esc

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?