Method ExchangeGhostData

Filters/ParallelGeometry/vtkPStructuredGridConnectivity.cxx:650–685

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//------------------------------------------------------------------------------
void vtkPStructuredGridConnectivity::ExchangeGhostData()
{
  assert("pre: Instance has not been initialized!" && this->Initialized);

  // STEP 0:
  this->InitializeMessageCounters();

  // STEP 1: Allocate internal data-structures
  this->RemotePoints.resize(this->NumberOfGrids);
  this->RemotePointData.resize(this->NumberOfGrids);
  this->RemoteCellData.resize(this->NumberOfGrids);
  for (unsigned int i = 0; i < this->NumberOfGrids; ++i)
  {
    this->RemotePoints[i].resize(this->GetNumberOfNeighbors(i), nullptr);
    this->RemotePointData[i].resize(this->GetNumberOfNeighbors(i), nullptr);
    this->RemoteCellData[i].resize(this->GetNumberOfNeighbors(i), nullptr);
  }

  this->SendBuffers.resize(this->NumberOfGrids);
  this->RcvBuffers.resize(this->NumberOfGrids);
  this->SendBufferSizes.resize(this->NumberOfGrids);
  this->RcvBufferSizes.resize(this->NumberOfGrids);

  // STEP 2: Serialize the ghost data and exchange buffer sizes
  this->ExchangeGhostDataInit();

  // STEP 3: Allocate rcv buffers and perform non-blocking communication
  this->CommunicateGhostData();

  // STEP 4: Block until communication is complete and raw rcv buffers are
  // de-serialized into the VTK data-structures.
  this->ExchangeGhostDataPost();

  // STEP 5: Synchronize with all processes
  this->Controller->Barrier();
}

//------------------------------------------------------------------------------
void vtkPStructuredGridConnectivity::SerializeGhostPoints(