Problem 2: Virtual Memory Simulation Goal To Simulate And Ev

Question

Problem 2 Virtual Memory Simulationgoalto Simulate And Evaluate A Vi Problem 2: Virtual Memory Simulation Goal: To simulate and evaluate a virtual memory system, and experiment with different page replacement algorithms. You will need a threads package, e.g. pThreads thread package. Assume that you have a 16-bit address space, 16 KB of main memory, and 2 KB page size. Virtual memory simulation consists of three components: virtual address generation component, address translation component, and statistics reporting component. Implement each component by a separate thread. The virtual address generation component generates a sequence of 16-bit virtual addresses and writes them in an integer buffer inBuffer of size 10. Write a function getNextVirtualAddress() for generating virtual addresses. This function may generate virtual addresses at random or based on a trace obtained from some source. The address translation component implements virtual address to physical address translation using a page replacement algorithm. This component reads the next virtual address from inBuffer and translates that address to a physical address. It prints the virtual address and corresponding physical address in a file. It also increments an integer variable (numberOfPageFaults) on every page fault. Use appropriate bit operations (>, ~, |, &, etc.) to implement this address translation. Implement a separate version of this component for every page replacement algorithm you want to experiment with. The statistics reporting component prints the total number of page faults (numberOfPageFaults) at the end.

Dr. Jack HW Helper · Accepted Answer

The simulation of virtual memory systems plays an essential role in understanding how operating systems manage memory resources efficiently. Virtual memory allows systems to use more memory than physically available by temporarily transferring data to disk storage. This simulation demonstrates key concepts such as address translation, page faults, and page replacement algorithms, providing valuable insights into system performance and optimization strategies. The design involves three concurrent components, each implemented as a separate thread: virtual address generation, address translation, and statistics reporting. Threading models like the POSIX pthreads library facilitate synchronization and communication between these components, enabling realistic simulation of parallel processes in an operating system environment. Virtual Address Generation The first component, virtual address generation, is responsible for producing a sequence of 16-bit addresses. These addresses simulate the virtual addresses used by programs during execution. The generation can be randomized or based on real trace data, adding to the realism of the simulation. The generation function, getNextVirtualAddress(), encapsulates this logic and fills a shared buffer of size 10 with new addresses when prompted. Address Translation and Page Replacement The core of the simulation lies in translating virtual addresses into physical addresses based on the system’s page table. With a 16-bit virtual address space and a 2 KB page size, each address is divided into a Virtual Page Number (VPN) and a page offset. The system employs algorithms like Least Recently Used (LRU) or First-In First-Out (FIFO) for page replacement policies. Each translated address, along with the virtual one, is logged into a file for analysis. Importantly, the system tracks the number of page faults, which occur when the requested page is not loaded into physical memory, necessitating page replacement. Statistics Reporting The thi

Problem 2: Virtual Memory Simulation Goal To Simulate And Ev

Problem 2 Virtual Memory Simulationgoalto Simulate And Evaluate A Vi

Paper For Above instruction

Virtual Address Generation

Address Translation and Page Replacement

Statistics Reporting

Implementation Details and Considerations

Conclusion

References