I Receiving a Message: MPl RECV The message envelope arguments determine what messages can be received by the call. The source, tag, and communicator arguments must match those of a pending message in order for the message to be received Wildcard values may be used for the source(MP/ ANY SOURCE, accept a message from any process)and the tag(MP/ANY TAG, accept a message with any tag value). If wildcards are not used, the call can accept messages from only the specified sending process and with only the specified tag value Communicator wildcards are not available The message body arguments specify where the arriving data are to be stored, what type it is assumed to be and how much of it the receiving process is prepared to accept. If the received message has more data than the receiving process is prepared to accept, it is an errorReceiving a Message: MPI_RECV • The message envelope arguments determine what messages can be received by the call. The source, tag, and communicator arguments must match those of a pending message in order for the message to be received. • Wildcard values may be used for the source (MPI_ANY_SOURCE, accept a message from any process) and the tag (MPI_ANY_TAG, accept a message with any tag value). If wildcards are not used, the call can accept messages from only the specified sending process, and with only the specified tag value. Communicator wildcards are not available. • The message body arguments specify where the arriving data are to be stored, what type it is assumed to be, and how much of it the receiving process is prepared to accept. If the received message has more data than the receiving process is prepared to accept, it is an error