ExchangeIntern(DeviceBuffer<TYPE, DIM>& source, GridLayout<DIM> memoryLayout, DataSpace<DIM> guardingCells, uint32_t exchange,
uint32_t communicationTag, uint32_t area = BORDER, bool sizeOnDevice = false) :
Exchange<TYPE, DIM>(exchange, communicationTag), deviceDoubleBuffer(NULL)
{
assert(!guardingCells.isOneDimensionGreaterThan(memoryLayout.getGuard()));
DataSpace<DIM> tmp_size = memoryLayout.getDataSpaceWithoutGuarding();
/*
DataSpace<DIM> tmp_size = memoryLayout.getDataSpace() - memoryLayout.getGuard() -
memoryLayout.getGuard(); delete on each side 2xguard*/
DataSpace<DIM> exchangeDimensions = exchangeTypeToDim(exchange);
for (uint32_t dim = 0; dim < DIM; dim++)
{
if (DIM > dim && exchangeDimensions[dim] == 1)
tmp_size[dim] = guardingCells[dim];
}
/*This is only a pointer to other device data
*/
this->deviceBuffer = new DeviceBufferIntern<TYPE, DIM > (source, tmp_size,
exchangeTypeToOffset(exchange, memoryLayout, guardingCells, area),
sizeOnDevice);
if (DIM > DIM1)
{
/*create double buffer on gpu for faster memory transfers*/
this->deviceDoubleBuffer = new DeviceBufferIntern<TYPE, DIM > (tmp_size, false, true);
}
this->hostBuffer = new HostBufferIntern<TYPE, DIM > (tmp_size);
}
/*! Check if my DataSpace is greater than other.
* @param other other DataSpace
* @return true if my DataSpace (one dimension) is greater than other, false otherwise
*/
virtual bool isMyDataSpaceGreaterThan(DataSpace<DIM> other)
{
return !other.isOneDimensionGreaterThan(data_space);
}
