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Suppose further that a single processor system can solve the problem in 106 seconds (about 11.6 days). So, on average, the single processor system executes 106 or a million instructions per second. Now suppose that the program has been parallelized for execution on a distributed-memory system. Suppose also that if the parallel program uses p processors, each processor will execute 1012=p instructions and each processor must send 109.p??1/ messages. Finally, suppose that there is no additional overhead in executing the parallel program. That is, the program will complete after each processor has executed all of its instructions and sent all of its messages, and there won't be any delays due to things such as waiting for messages. a. Suppose it takes 10??9 seconds to send a message. How long will it take the program to run with 1000 processors, if each processor is as fast as the single processor on which the serial program was run? b. Suppose it takes 10??3 seconds to send a message. How long will it take the program to run with 1000 processors?
Write other commands, tools are available to help the ROOT in managing users and groups from command line or within a script.
A spawned process may be destroyed automatically when its parent is destroyed, as one method; another design is to have spawned processes proceed independent of the parent
Analysis shows that there are about five faults per 1000 lines of code in carefully made programs, which means that one million lines of codes will have 5000 faults.
A function of n, the number of data items being manipulated. For each expression, determine the dominant term and then classify the algorithm in big-O terms.
Explain the network security methodology and technology used in your organization and recognize any additional controls needed.
You have Poisson arrivals into your system with ?= 5 packets/second. The slot length is 1 second. Your current estimate for n^ is 20 (for the k-th time slot iteration).
Discuss how do you envision ways program verification and performance tuning will be accomplished in future and will it still be a work of art?
Q/ Describe the Q/ Describe the relative merits of optimistic versus conservative concurrency control under different rates of contention among updates. under different rates of contention among updates.
Define Critical Path and CPM. Define Networks & Network scheduling
A user calls to report that she is not able to log on to email. You respond with a couple of quick questions. Because you think that no one else is using the network right now,
Andersen & Sons is a huge marketing company with four offices in the Chicago area. Each office has Windows Server 2003, and all servers are in a single domain.
Consider a computer system with 48-bit logical address and 4-KB page size. System supports up to 1 GB of physical memory. Illustrate how many entries are there in each of the following?
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