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omp_transfer.h
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omp_transfer.h
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/* Copyright (c) 2010-2013 The Trustees of Indiana University.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* - Neither the Indiana University nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _OMP_TMODE_HEADER
#define _OMP_TMODE_HEADER
#ifndef HMPI_INTERNAL
#define HMPI_INTERNAL 1
#endif
#include <stdio.h>
#include <stdlib.h>
#include "hmpi.h"
#include <omp.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <sched.h>
#define OMP_TOTAL_CORES 120
#define DEFAULT_OMP_ALLOCATION 5
#define HMPI_ATOMIC_ADD(p, v) (uint64_t)__sync_add_and_fetch(p, v)
#define HMPI_ATOMIC_GET(p) (uint64_t)__sync_add_and_fetch(p, 0.0)
/*
* Three different load balancing policies
* CONSTANT - use constant number of cores for all transfers
*
* DYNAMIC - static load balancing based on number of ranks. Each rank recieves predefined number of threads attached
* to cores. number of allocated cores per rank is caluclated on OMP_TOTAL_CORES/R
*
* SPECULATIVE - speculate available number of cores per transfer based on function time spent and size. f(t, s)
* */
//#define HMPI_OMP_MODE 0xFF
#ifdef HMPI_OMP_MODE
#define LB_POLICY_CONSTANT 1000
#endif
//#define LB_POLICY_DYNAMIC 1001
//#define LB_POLICY_SPECULATIVE 1002
#define HMPI_OMP_AFFINITY_AWARE 1
typedef enum hmpi_omp_mode {
NONE,
CONSTANT,
STATIC,
SPECULATIVE
}hmpi_omp_mode ;
/*
* shared data structure/storage for
* speculative measuremnts of mpi_time
* */
extern uint64_t* omp_mpi_time_list ;
extern hmpi_omp_mode __hmpi_omp_policy;
extern int core_allocation_rank ;
#if HMPI_OMP_AFFINITY_AWARE == 1
extern int core_allocation_start ;
extern int core_allocation_end ;
#endif
void _hmpi_omp_init(HMPI_Comm comm);
void transfer_omp_loop(uintptr_t rbuf, uintptr_t sbuf, size_t size, HMPI_Request recv_req, HMPI_Request send_req);
void profile_omp_loop(uint64_t dt, int rank);
uint64_t t_useconds();
#endif