mirror of
https://github.com/hermitcore/libhermit.git
synced 2025-03-30 00:00:15 +01:00
e339311d05
- iRCCE was designed for the SCC - see http://www.lfbs.rwth-aachen.de/publications/files/iRCCE.pdf - HermitCreate creates virtual message passing puffers to emulate the SCC
78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
//***************************************************************************************
|
|
// Get data from communication buffer.
|
|
//***************************************************************************************
|
|
//
|
|
// Author: Rob F. Van der Wijngaart
|
|
// Intel Corporation
|
|
// Date: 008/30/2010
|
|
//
|
|
//***************************************************************************************
|
|
//
|
|
// Copyright 2010 Intel Corporation
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
// [2010-11-03] switched to SCC-optimized memcpy() functions in scc_memcpy.h:
|
|
// - memcpy_to_mpb()
|
|
// - memcpy_from_mpb()
|
|
// by Stefan Lankes, Carsten Clauss, Chair for Operating Systems,
|
|
// RWTH Aachen University
|
|
//
|
|
#include "iRCCE_lib.h"
|
|
|
|
#if (defined COPPERRIDGE || defined SCC) && !defined(__hermit__)
|
|
#include "scc_memcpy.h"
|
|
#endif
|
|
|
|
void* iRCCE_memcpy_get(void *dest, const void *src, size_t count)
|
|
{
|
|
#if (defined COPPERRIDGE || defined SCC) && !defined(__hermit__)
|
|
return memcpy_from_mpb(dest, src, count);
|
|
#else
|
|
return memcpy(dest, src, count);
|
|
#endif
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------
|
|
// FUNCTION: iRCCE_get
|
|
//--------------------------------------------------------------------------------------
|
|
// copy data from address "source" in the remote MPB to address "target" in either the
|
|
// local MPB, or in the calling UE's private memory. We do not test to see if a move
|
|
// into the calling UE's private memory stays within allocated memory *
|
|
//--------------------------------------------------------------------------------------
|
|
int iRCCE_get(
|
|
t_vcharp target, // target buffer, MPB or private memory
|
|
t_vcharp source, // source buffer, MPB
|
|
int num_bytes, // number of bytes to copy (must be multiple of cache line size
|
|
int ID // rank of source UE
|
|
) {
|
|
|
|
// in non-GORY mode we only need to retain the MPB source shift; we
|
|
// already know the source is in the MPB, not private memory
|
|
source = RCCE_comm_buffer[ID]+(source-RCCE_comm_buffer[RCCE_IAM]);
|
|
|
|
// do the actual copy, making sure we copy fresh data
|
|
#ifdef _OPENMP
|
|
#pragma omp flush
|
|
#endif
|
|
RC_cache_invalidate();
|
|
|
|
iRCCE_memcpy_get((void *)target, (void *)source, num_bytes);
|
|
|
|
// flush data to make sure it is visible to all threads; cannot use a flush list
|
|
// because it concerns malloced space
|
|
#ifdef _OPENMP
|
|
#pragma omp flush
|
|
#endif
|
|
return(iRCCE_SUCCESS);
|
|
}
|