I want to answer question 1,2,3,4

corse : CIS 432

I In MI, collective communications a) use tags b) are matched on the basis of communicators only c) are matched on the basis of the communicator and the order in which they are called d) all of the mentioned answers are not correct In MPI, point-to-point communications are matched on the basis of a) tags b) communicators c) tags and communicators d) all of the mentioned answers are not correct In MPI Comm rank (MPI COMM WORLD, \&myrank); the variable myrank represents a) the rank of a process b) a message tag c) a data type d) the number of processes in the program In MPI Comm size (MPI_COMM WORLD,\&comm, Sz); the variable comm, sz represents a) the rank of a process b) a message tag c) a data type d) the number of processes in the program 3 In MPI, collective communications a) use tags b) are matched on the basis of communicators only c) are matched on the basis of the communicator and the order in which they are called d) all of the mentioned answers are not correct In MPI, point-to-point communications are matched on the basis of a) tags b) communicators c) tags and communicators