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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2013 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2006 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2006 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2009 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
* Copyright (c) 2013 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2015-2017 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2022 Amazon.com, Inc. or its affiliates. All Rights reserved.
* Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stddef.h>
#include <stdlib.h>
#include "opal/datatype/opal_convertor.h"
#include "opal/datatype/opal_datatype.h"
#include "opal/datatype/opal_datatype_checksum.h"
#include "opal/datatype/opal_datatype_internal.h"
#include "opal/prefetch.h"
#include "opal/util/output.h"
#include "opal/mca/accelerator/accelerator.h"
#if OPAL_ENABLE_DEBUG
# define DO_DEBUG(INST) \
if (opal_ddt_copy_debug) { \
INST \
}
#else
# define DO_DEBUG(INST)
#endif /* OPAL_ENABLE_DEBUG */
#define MEMMOVE(d, s, l) \
do { \
if ((((d) < (s)) && (((d) + (l)) > (s))) || (((s) < (d)) && (((s) + (l)) > (d)))) { \
memmove((d), (s), (l)); \
} else { \
MEMCPY((d), (s), (l)); \
} \
} while (0)
static void *opal_datatype_accelerator_memcpy(void *dest, const void *src, size_t size)
{
int res;
int dev_id;
uint64_t flags;
/* If accelerator check addr returns an error, we can only
* assume it is a host buffer. If device buffer checking fails,
* it's also highly likely that a device copy will fail. The best
* we can do is fail as this is not a recoverable/ignorable failure
* and retries are also unlikely to succeed. We identify these
* buffers as host buffers as attempting a memcpy would provide
* a chance to succeed. */
if (0 >= opal_accelerator.check_addr(dest, &dev_id, &flags) &&
0 >= opal_accelerator.check_addr(src, &dev_id, &flags)) {
return memcpy(dest, src, size);
}
res = opal_accelerator.mem_copy(MCA_ACCELERATOR_NO_DEVICE_ID, MCA_ACCELERATOR_NO_DEVICE_ID,
dest, src, size, MCA_ACCELERATOR_TRANSFER_UNSPEC);
if (OPAL_SUCCESS != res) {
opal_output(0, "Error in accelerator memcpy");
abort();
}
return dest;
}
static void *opal_datatype_accelerator_memmove(void *dest, const void *src, size_t size)
{
int res;
int dev_id;
uint64_t flags;
/* If accelerator check addr returns an error, we can only
* assume it is a host buffer. If device buffer checking fails,
* it's also highly likely that a device copy will fail. The best
* we can do is fail as this is not a recoverable/ignorable failure
* and retries are also unlikely to succeed. We identify these
* buffers as host buffers as attempting a memmove would provide
* a chance to succeed. */
if (0 >= opal_accelerator.check_addr(dest, &dev_id, &flags) &&
0 >= opal_accelerator.check_addr(src, &dev_id, &flags)) {
return memmove(dest, src, size);
}
res = opal_accelerator.mem_move(MCA_ACCELERATOR_NO_DEVICE_ID, MCA_ACCELERATOR_NO_DEVICE_ID,
dest, src, size, MCA_ACCELERATOR_TRANSFER_UNSPEC);
if (OPAL_SUCCESS != res) {
opal_output(0, "Error in accelerator memmove");
abort();
}
return dest;
}
#undef MEM_OP_BLOCK_SIZE
#define MEM_OP_BLOCK_SIZE total_length
#undef MEM_OP_NAME
#define MEM_OP_NAME non_overlap_accelerator
#undef MEM_OP
#define MEM_OP opal_datatype_accelerator_memcpy
#include "opal_datatype_copy.h"
#undef MEM_OP_BLOCK_SIZE
#define MEM_OP_BLOCK_SIZE total_length
#undef MEM_OP_NAME
#define MEM_OP_NAME overlap_accelerator
#undef MEM_OP
#define MEM_OP opal_datatype_accelerator_memmove
#include "opal_datatype_copy.h"
int32_t opal_datatype_copy_content_same_ddt(const opal_datatype_t *datatype, int32_t count,
char *destination_base, char *source_base)
{
ptrdiff_t extent;
int32_t (*fct)(const opal_datatype_t *, int32_t, char *, char *);
DO_DEBUG(opal_output(0, "opal_datatype_copy_content_same_ddt( %p, %d, dst %p, src %p )\n",
(void *) datatype, count, (void *) destination_base,
(void *) source_base););
/* empty data ? then do nothing. This should normally be trapped
* at a higher level.
*/
if (0 == count) {
return 1;
}
/**
* see discussion in coll_basic_reduce.c for the computation of extent when
* count != 1. Short version of the story:
* (true_extent + ((count - 1) * extent))
*/
extent = (datatype->true_ub - datatype->true_lb) + (count - 1) * (datatype->ub - datatype->lb);
fct = non_overlap_accelerator_copy_content_same_ddt;
if (destination_base < source_base) {
if ((destination_base + extent) > source_base) {
/* memmove */
fct = overlap_accelerator_copy_content_same_ddt;
}
} else {
if ((source_base + extent) > destination_base) {
/* memmove */
fct = overlap_accelerator_copy_content_same_ddt;
}
}
return fct(datatype, count, destination_base, source_base);
}
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