Communicating with other processes

Data must be exchanged with other workers;

• Cooperative -- all parties agree to transfer data.
  • Message-passing is an approach that makes the exchange of data cooperative.
  • Data must both be explicitly sent and received.

  Figure 1: Cooperative-Communicating with other processes.

  
• One sided -- one worker performs transfer of data.
  • One-sided operations between parallel processes include remote memory reads and writes.
  • An advantage is that data can be accessed without waiting for another process.

  Figure 2: One sided-Communicating with other processes.