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Q. Functions for MPI Environment?
Int MPI_Finalize (void)
It ends the MPI environment. Any MPI function cannot be called after MPI_Finalize. Each MPI process belongs to one or more groups (which are also known as communicator). Every process is recognized by its rank (0 to group size -1) within the provided group. Primarily all processes belong to a default group known as MPI_COMM_WORLD group. Additional groups can be produced by the user as and when needed. Now we will learn a number of functions related to communicators.
int MPI_Comm_size (MPI_Comm comm, int *size)
It returns variable size which comprises number of processes in group comm.
int MPI_Comm_rank (MPI_Comm comm, int *rank)
It returns rank of calling process in group comm.
How does CPU know that an interrupt has taken place? There needs to be a line or a register or status word in CPU which can be increased on occurrence of interrupt situation.
Purpose of storage: Several different forms of storage, based on different natural phenomena, have been invented. So far, no practical universal storage medium persists, and a
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Compare excess 3 codes and gray code. Ans. Excess 3 Codes 1. This is the other form of BCD code. All decimal digits are coded in 4 bit binary code. 2. The code
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Q. What is Base Register Addressing ? An addressing technique in which content of an instruction specifies base register is added to address field or displacement field of the
Performance metrics aren't able to attain a linear curve in comparison to increase in number of processors in parallel computer. The main reason for above situation is presence of
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