Message Passing Synchronization

The Linda model supports many different parallel programming paradigms. At its simplest, the distributed-data environment offers an improvement over raw message passing by promoting an uncoupled programming style. This is because the synchronization of processes resulting from access to distributed data is minimal. However, arbitrarily complex shared and distributed data structures may be created. 

In message passing, SEND and RECEIVE operations are used to synchronize, and to pass data via a specified communication channel. At one end of the message-passing spectrum, the SEND can refer to the specific process to which the information is sent, and the RECEIVE can refer to the specific process from which the information is received this option is referred to as direct naming. At the other end of the spectrum, the SEND and RECEIVE can refer to global mailboxes. Since the mailbox is not directly tied to a particular process, this method is more general, and provides better support for client / server interaction, where there are multiple clients or servers. 

Interprocess communication - To suppot communication and synchronization among the concurrent processes, HardwareC suj rts both parameter passing and message passing. The former assumes the existence... 

Message passing via explicit blocking send and receive operations can be used for both synchronization and data-transfer. Information transfer takes place... 

System arrays of Advanced Flexible Processors are linked together and synchronized via facilities provided by the ring port functional units Data elements 16 bits wide, along with 12 bits of control information, are passed between ring ports on adjacent AFP s. The control information provides all of the associated addressing information to define the single processor or subset of system processors to which the message is to be sent ... 

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