A multiprocessor consists of 100 processors, each capable of a peak execution rate of 2Gflops. What is the performance of the system as measured in Gflops when 2% of the code is sequential and 98% is parallelizable?
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A multiprocessor consists of 100 processors, each capable of a peak execution rate of 2Gflops. What is the performance of the system as measured in Gflops when 2% of the code is sequential and 98% is parallelizable?
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- _____ is a CPU design technique in which instruction execution is divided into multiple stages and different instructions can execute in different stages simultaneously.Processor R is a 64-bit RISC processor with a 2 GHz clock rate. The average instruction requires one cycle to complete, assuming zero wait state memory accesses. Processor C is a CISC processor with a 1.8 GHz clock rate. The average simple instruction requires one cycle to complete, assuming zero wait state memory accesses. The average complex instruction requires two cycles to complete, assuming zero wait state memory accesses. Processor R can’t directly implement the complex processing instructions of Processor C. Executing an equivalent set of simple instructions requires an average of three cycles to complete, assuming zero wait state memory accesses. Program S contains nothing but simple instructions. Program C executes 70% simple instructions and 30% complex instructions. Which processor will execute program S more quickly? Which processor will execute program C more quickly? At what percentage of complex instructions will the performance of the two processors be equal?How does pipelining improve CPU efficiency? What’s the potential effect on pipelining’s efficiency when executing a conditional BRANCH instruction? What techniques can be used to make pipelining more efficient when executing conditional BRANCH instructions?
- A(n) ________________ instruction always alters the instruction execution sequence. A(n) ______________ instruction alters the instruction execution sequence only if a specified Condition is true.You have been contrated to design a memory system for a computer. Assuming the processor has 32 address lines, determine the number of 32 MB memories that can be placed (without overlapping) in the memory space of a processor.Suppose that a microprocessor operates at 5MHz. How long does the bus cycle occupy, assuming no wait states are inserted?
- suppose, a soft real-time system has 100 m bytes of program memory that is loaded at 75% 16M bytes of data memory that is loaded at 25% and 10 M bytes of stack area that is loaded at 50%. what is the total memory utilization?Consider a 32-bit microprocessor, with a 16-bit external data bus, driven by an 8-MHz input clock. Assume that this microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What is the maximum data transfer rate across the bus that this microprocessor can sustain in bytes/s? To increase its performance, would it be better to make its external data bus 32 bits or to double the external clock fre- quency supplied to the microprocessor? State any other assumptions you make and explain. Hint: Determine the number of bytes that can be transferred per bus cycle.Take the multiprocessor with 30 processors, each processor is capable od max 2Gflops. What is the maximum capability of the multiprocessor for the execution of an application that has 5% sequential code? Use Amdahl's lw
- As a simple model of a bus-based multiprocessor system without caching, suppose that one instruction in every four references memory, and that a memory reference occupies the bus for an entire instruction time. If the bus is busy, the requesting CPU is put into a FIFO queue. How much faster will a 64-CPU system run than a 1-CPU system?Take the multiprocessor with 30 processors, each processor is capable od max2Gflops. What is the maximum capability of the multiprocessor for the execution of anapplication that has 5% sequential code?For a microprocessor 68000 Motorola system, how many memory addresses which can be accessed by it? Prove it and justify the last address of the memory location. Then, sketch the memory map of it by using the address calculated.