Reduction operation

 

MPI_REDUCE

 

 

In this example, an array of integers is distributed among processors. The program performs the reduction operation(summation) of data distributed over processes, and brings the result to the root process as shown in the following figure:

 


MPI_Reduce description 

  • Choose either one of the following Fortran or C example
  • and complete the missing arguments for the call to MPI_Reduce.