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Q. Timing in MPI program?
MPI_Wtime ( ) returns lapsed wall clock time in seconds because some random point in past. Elapsed time for program section is given by difference between MPI_Wtime values at starting and end of process. Process clocks aren't necessarily synchronised, so clock values aren't necessarily comparable across the processes and care should be taken in determining overall running time for parallel program. Even if clocks are openly synchronised variation across clocks still can't be expected to be considerably less than round-trip time for zero-length message between the processes.
What is the main problem with segmentation? Problem with segmentation (i) Is with paging, such mapping needs two memory references per logical address that slows down the
What is a linker program? Ans. links the program with other programs required for its execution is called a linker program.
Intranets are mainly "small" Internets. They use same network facilities that Internet does, though access is restricted to a limited sphere. For example, a company can set up an i
Q. Explain the Instruction Decode? Instruction Decode: This phase is performed under control of Control Unit of computer. The Control Unit determines the operation which is t
real world applications
Differentiate between non-relocatable and relocatable programs. A non-relocatable program is one which cannot be executed in any memory area other than the area starting at i
Q. Explain Register Indirect Addressing? In this addressing technique the operand is data in memory pointed to by a register. Or we can say in other words that the operand fie
Which is most general phase structured grammar? Context – Sensitive is most common phase structured grammar.
4-variable K-maps have 16 squares which arearranged in 4 columns and 4 rows. Columns and rows are labeled with 2 variables. The rows are arranged so that C or D ch
A router connects to at most K networks. How many routers R are required to connect to N networks? Derive an equation that gives R in terms of N and K. If N K and K >=2 this
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