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/* This file is part of the OpenLB library
*
* Copyright (C) 2018 Adrian Kummerlaender
* E-mail contact: info@openlb.net
* The most recent release of OpenLB can be downloaded at
* <http://www.openlb.net/>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef BLOCK_DATA_SYNC_MODE_H
#define BLOCK_DATA_SYNC_MODE_H
namespace olb {
/// Mode of synchronizing functor block data between processes
/**
* Required for optimizing functor operations to various usage patterns.
*
* i.e. the convention is for the full domain to be available on every rank
* but this is not ideal in most usage scenarios of reduction functors.
*
* e.g. the primary user of BlockReduction3D2D, BlockGifWriter, only requires
* full data to be available on the rank where its io is performed (rank 0).
*
* SuperLatticeFlux3D only requires rank-local data to be available. Any further
* synchronization would potentially impact performance in this critical area.
**/
enum class BlockDataSyncMode {
/// default behavior, full block data available on all ranks after update
ReduceAndBcast,
/// optimize for usage in e.g. BlockGifWriter, full data only available on main rank
ReduceOnly,
/// optimize for usage in e.g. SuperLatticeFlux3D, only rank-local data available
None
};
}
#endif
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