Point to point Synchronization

• The producer thread:

  • Computes field variables on its own subdomain
  • Set a shared flag when the data is ready
  • In MPI the point at which MPI_send happens

• The consumer thread:

  • Needs field variables in neighboring subdomain(s) to continue simulation
  • Waits for the neighbor’s flag to be set before using the data
  • In MPI the MPI_receive event

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