/**
* Add Exchange in GridBuffer memory space.
*
* An Exchange is added to this GridBuffer. The exchange buffers use
* the same memory as this GridBuffer.
*
* @param dataPlace place where received data are stored [GUARD | BORDER]
* if dataPlace=GUARD than copy other BORDER to my GUARD
* if dataPlace=BORDER than copy other GUARD to my BORDER
* @param receive a Mask which describes the directions for the exchange
* @param guardingCells number of guarding cells in each dimension
* @param sizeOnDevice if true, internal buffers have their size information on the device, too
*/
void addExchange(uint32_t dataPlace, const Mask &receive, DataSpace<DIM> guardingCells, uint32_t communicationTag, bool sizeOnDevice = false)
{
if (hasOneExchange && (communicationTag != lastUsedCommunicationTag))
throw std::runtime_error("It is not allowed to give the same GridBuffer different communicationTags");
lastUsedCommunicationTag = communicationTag;
receiveMask = receiveMask + receive;
sendMask = this->receiveMask.getMirroredMask();
Mask send = receive.getMirroredMask();
for (uint32_t ex = 1; ex< -12 * (int) DIM + 6 * (int) DIM * (int) DIM + 9; ++ex)
{
if (send.isSet(ex))
{
uint32_t uniqCommunicationTag = (communicationTag << 5) | ex;
if (!hasOneExchange && !privateGridBuffer::UniquTag::getInstance().isTagUniqu(uniqCommunicationTag))
{
std::stringstream message;
message << "unique exchange communication tag ("
<< uniqCommunicationTag << ") witch is created from communicationTag ("
<< communicationTag << ") allready used for other gridbuffer exchange";
throw std::runtime_error(message.str());
}
hasOneExchange = true;
if (sendExchanges[ex] != NULL)
{
throw std::runtime_error("Exchange already added!");
}
//std::cout<<"Add Exchange: send="<<ex<<" receive="<<Mask::getMirroredExchangeType((ExchangeType)ex)<<std::endl;
maxExchange = std::max(maxExchange, ex + 1u);
sendExchanges[ex] = new ExchangeIntern<BORDERTYPE, DIM > (*deviceBuffer, gridLayout, guardingCells,
(ExchangeType) ex, uniqCommunicationTag,
dataPlace == GUARD ? BORDER : GUARD, sizeOnDevice);
ExchangeType recvex = Mask::getMirroredExchangeType(ex);
maxExchange = std::max(maxExchange, recvex + 1u);
receiveExchanges[recvex] =
new ExchangeIntern<BORDERTYPE, DIM > (
*deviceBuffer,
gridLayout,
guardingCells,
recvex,
uniqCommunicationTag,
dataPlace == GUARD ? GUARD : BORDER,
sizeOnDevice);
}
}
}
/**
* Add Exchange in dedicated memory space.
*
* An Exchange is added to this GridBuffer. The exchange buffers use
* the their own memory instead of using the GridBuffer's memory space.
*
* @param receive a Mask which describes the directions for the exchange
* @param dataSpace size of the newly created exchange buffer in each dimension
* @param sizeOnDevice if true, internal buffers have their size information on the device, too
*/
void addExchangeBuffer(const Mask &receive, const DataSpace<DIM> &dataSpace, uint32_t communicationTag, bool sizeOnDevice = false)
{
if (hasOneExchange && (communicationTag != lastUsedCommunicationTag))
throw std::runtime_error("It is not allowed to give the same GridBuffer different communicationTags");
lastUsedCommunicationTag = communicationTag;
/*don't create buffer with 0 (zero) elements*/
if (dataSpace.productOfComponents() != 0)
{
receiveMask = receiveMask + receive;
sendMask = this->receiveMask.getMirroredMask();
Mask send = receive.getMirroredMask();
for (uint32_t ex = 1; ex < 27; ++ex)
{
if (send.isSet(ex))
{
uint32_t uniqCommunicationTag = (communicationTag << 5) | ex;
if (!hasOneExchange && !privateGridBuffer::UniquTag::getInstance().isTagUniqu(uniqCommunicationTag))
{
std::stringstream message;
message << "unique exchange communication tag ("
<< uniqCommunicationTag << ") witch is created from communicationTag ("
<< communicationTag << ") allready used for other gridbuffer exchange";
throw std::runtime_error(message.str());
}
hasOneExchange = true;
if (sendExchanges[ex] != NULL)
{
throw std::runtime_error("Exchange already added!");
}
//GridLayout<DIM> memoryLayout(size);
maxExchange = std::max(maxExchange, ex + 1u);
sendExchanges[ex] = new ExchangeIntern<BORDERTYPE, DIM > (/*memoryLayout*/ dataSpace,
ex, uniqCommunicationTag, sizeOnDevice);
ExchangeType recvex = Mask::getMirroredExchangeType(ex);
maxExchange = std::max(maxExchange, recvex + 1u);
receiveExchanges[recvex] = new ExchangeIntern<BORDERTYPE, DIM > (/*memoryLayout*/ dataSpace,
recvex, uniqCommunicationTag, sizeOnDevice);
}
}
}
}
