Given 512KB of memory, show the memory partitioning and allocation in a buddy system for the following requests. 50K, 228K, 56K, 4K, 2K, 1K, 3K
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Given 512KB of memory, show the memory partitioning and allocation in a buddy system for the following requests. 50K, 228K, 56K, 4K, 2K, 1K, 3K
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- Suppose cache has a hit rate of 0.89 and access time of 5ns, main memory has a hit rate of 0.98 and access time of 60ns, and virtual memory has an access time of 700 us (microseconds). What is the average memory access time in us?Suppose we have a byte-addressable computer using fully associative mapping with 16-bit main memory addresses and 32 blocks of cache. If each block contains 16 bytes: (a) Determine the size of the offset field. (b) Determine the size of the tag field.Calculate the effective access time for a demand-paged memory given a memory access time of 100 nanoseconds, a page fault service time of 6,000,000 nanoseconds, and a page-fault rate of 1 page fault out of every 10,000 access attempts.
- Given that a bus has 64 data lines and requires 4 cycles of 125 nanoseconds each to transfer data. The bandwidth of this bus is 16 Megabytes/sec. If the cycle time of the bus is increased to 180 nanoseconds and the number of cycles required for transfer is the same, calculate bus bandwidth for the case above.Given a virtual memory of size 4 GiB, physical memory of size 1 GiB, and page size equal to 256 KiB. How many bits are used to specify a virtual page number?Given a standard memory size of 2^15 block, briefly explain how many addressable locations can beaccessed by an SIC machine and why.
- A small computer system has 64KB virtual address space and 32KB physical address space as shown in Fig. B. The page size is 4KB (4096 bytes). Virtual address space 60K-64K 56K-60K Virtual page 52K-56K 48K-52K 44K-48K 7 40K-44K Physical 36K-40K memory address 32K-36K 28K-32K 28K-32K 24K-28K 24K-28K 20K-24K 3 20K-24K 16K-20K 4 16K-20K 12K-16K 12K-16K 8K-12K 8K-12K 4K-8K 1 | 4K-8K OK-4K 2 OK-4K Page frame Fig. B What is the physical address for the following virtual addresses? (1) 3000 (2) 4200 (3) 9000 (4) 24000Suppose we have a byte-addressable computer using 2-way set associative mapping with 16-bit main memory addresses and 32 blocks of cache. If each block contains 8 bytes, determine the size of the offset field, and show your work.Asap
- Suppose we have a byte-addressable computer using 2-way set associative mapping with 16-bit main memory addresses and 32 bits, the blocks of cache. Suppose also that each block contains 8 bytes. The size of the block offset field is bits, and the size of the tag field is bits. size of the set field isFor a 512k x 32-bit memory system, what is the capacity in bytes? Give the exact number. Remember that 512k is shorthand for 524,288. 16,777,216 16,384,000 2,048,000 2,097,152Consider a paging system with the page table stored in memory. a. If a memory reference takes 50 nanoseconds, how long does a paged memory reference take? b. If we add TLBS, and if 75 percent of all page-table references are found in the TLBS, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBS takes 2 nanoseconds, if the entry is present.