Printf('Rank %d recieve %s message ',1,B) MPI_Recv(B,50,MPI_CHAR,1,0,MPI_COMM_WORLD,MPI_STATUS_IGNORE) MPI Program to send data from 3 process to the fourth process #includeД¬har A= * MPI_Reduce(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype,MPI_Op op, int root, MPI_Comm comm) :Reduces the specified a array by a specific operation accross all processes. * MPI_Gather(void *send_data,int send_count,MPI_Datatype send_datatype,void *recv_data,int recv_count,MPI_Datatype recv_datatype,int root, MPI_Comm communicator) : Gathers data from all process to the specified process. * MPI_Scatter(void *send_data,int send_count,MPI_Datatype send_datatype,void *recv_data,int recv_count,MPI_Datatype recv_datatype,int root,MPI_Comm communicator) : Scatters data from a specified rank accross all the processes. * MPI_Send(const void *buf, int count, MPI_Datatype datatype, int dest, int tag,MPI_Comm comm) : Sends data to the specified rank. * MPI_Recv(void *buf, int count, MPI_Datatype datatype, int source, int tag,MPI_Comm comm, MPI_Status *status):Recieves data from specified rank. * MPI_Comm_size(MPI_COMM_WORLD,&size): Returns the total number of processes. * MPI_Comm_rank(MPI_COMM_WORLD,&rank) : Returns the rank (process id) of that processes.

* MPI_Init(&argc,&argv) : Initialize MPI part of the program. np : Number of Processes Basic MPI Programs Basic MPI Function Run the following command on terminal $ sudo apt-get install libcr-dev mpich2 mpich2-docД¬ompiling MPI Programs mpicc -o hello_world_c hello_world.cД®xecuting MPI Programs mpiexec -np 4. Installing and Basic Programs on MPI C Installing MPI on Ubuntu

How to install mpi on ubuntu