If infinite resources can theoretically run a program 8 times faster than a single processor, how much faster than a single processor can 10 processors run the same program? If the execution times using the base machine and the target machine are as follows, what is the SPEC ratio? Benchmark 1 Benchmark 2 Benchmark 3 Benchmark 4 Benchmark 5 Base Machine 1 sec 10 sec 100 sec 96 sec 800 sec Target Machine 0.5 sec 2.5 sec 12.5 sec 6 sec 25

If infinite resources can theoretically run a program 8 times faster than a single processor, how much faster than a single processor can 10 processors run the same program? If the execution times using the base machine and the target machine are as follows, what is the SPEC ratio? Benchmark 1 Benchmark 2 Benchmark 3 Benchmark 4 Benchmark 5 Base Machine 1 sec 10 sec 100 sec 96 sec 800 sec Target Machine 0.5 sec 2.5 sec 12.5 sec 6 sec 25

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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There has to be a comparison and contrast between the ideas of "virtual memory" and "virtual machines." How similar or dissimilar are the missions of each group? What are the benefits and drawbacks of both options? Provide some examples of when it would be a good idea to use virtual memory and when it would be a good idea to use a virtual machine.
It is useful to examine the similarities and differences between virtual machines and virtual memory. What are the differences in the missions of these groups? What are the benefits and drawbacks of each option? Provide some examples of when it would be a good idea to use virtual memory and when it would be a good idea to use a virtual machine.
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5) How many processors would be needed to make the task in the previous question 2 times faster compared to a single processor?
What measures may be taken to ensure that a CPU's processing cycles are not needlessly squandered while it attempts to handle a huge number of instructions all at once? How reliant is the success of this plan's implementation on the availability of various resources? Explain how one of these impacts manifests itself.
If theoretically infinite resources can run a programme eight times quicker than a single processor, how much faster can 10 processors run the same programme than a single processor?
In a timesharing OS we have the following cpu timeline for two tasks X and Y. The timeslice is 1s.Both tasks are available in the system at the same time t=9:00:00.000 and order of arrival is the obviousX followed by Y. (The decimals reflect milliseconds if they showup in an indicated time reference.) There are no other processes (tasks) in the system other than X,Y. 1234567890 XYXYX--YXY The time line 1 indicates that at t=9:00:00s task X starts its execution and when t=9:00:01s is reached task Y takes over. The time line 1 indicates the 'first second' and time line 0 indicates the 'tenth second' above.Task Y completes its execution at t=9:00:10s, the completion of the tenth second since X started its execution. Task X has completed its execution earlier. (a) What is the total number of context switches starting from prior to t=9:00:00s (e.g. t=8:59:59.999) through thecompletion of $Y$? answer is 16s (b) What is the turnaround time for Y? answer is 10s (c) What is…
Virtual memory and virtual machines are two concepts that need to be compared and contrasted. When comparing the two groups, what are their respective missions? What are the upsides and downfalls of each option? Provide some examples of when it would be helpful to have virtual memory and when it would be helpful to have virtual computers.
How can we stop a CPU from squandering time by trying to run too many programmes at once? If we don't have those resources, how will it affect our ability to put this plan into action? Provide an example of the results you may anticipate from them.
If a single processor can only execute a software eight times faster than theoretically limitless resources, how much faster can ten processors run the same programme as a single processor?
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