d8df9d414d
This commit adds support for performing one-sided operations over supported hardware (currently Infiniband and Cray Gemini/Aries). This component is still undergoing active development. Current features: - Use network atomic operations (fadd, cswap) for implementing locking and PSCW synchronization. - Aggregate small contiguous puts. - Reduced memory footprint by storing window data (pointer, keys, etc) at the lowest rank on each node. The data is fetched as each process needs to communicate with a new peer. This is a trade-off between the performance of the first operation on a peer and the memory utilization of a window. TODO: - Add support for the accumulate_ops info key. If it is known that the same op or same op/no op is used it may be possible to use hardware atomics for fetch-and-op and compare-and-swap. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
17 строки
456 B
C
17 строки
456 B
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
|
|
/*
|
|
* Copyright (c) 2012-2013 Sandia National Laboratories. All rights reserved.
|
|
* Copyright (c) 2014-2015 Los Alamos National Security, LLC. All rights
|
|
* reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "osc_rdma.h"
|
|
#include "osc_rdma_frag.h"
|
|
|
|
OBJ_CLASS_INSTANCE(ompi_osc_rdma_frag_t, opal_free_list_item_t, NULL, NULL);
|