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openmpi/oshmem/mca/spml/ikrit/spml_ikrit.c
Alex Mikheev 3f7ed56548 OSHMEM: spml ikrit: fix mxm disconnect flow 
Add out of band barrier before performing mxm disconnect.
It will make sure that every pe is ready to disconnect. Otherwise
bad things may happen.
2014-12-16 15:07:17 +02:00

1440 строки
46 KiB
C
Исходник Ответственный История

/*
* Copyright (c) 2013 Mellanox Technologies, Inc.
* All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdint.h>
#include "oshmem_config.h"
#include "opal/datatype/opal_convertor.h"
#include "orte/include/orte/types.h"
#include "orte/runtime/orte_globals.h"
#include "oshmem/mca/spml/ikrit/spml_ikrit.h"
#include "oshmem/include/shmem.h"
#include "oshmem/mca/memheap/memheap.h"
#include "oshmem/mca/memheap/base/base.h"
#include "oshmem/proc/proc.h"
#include "oshmem/mca/spml/base/base.h"
#include "oshmem/mca/spml/base/spml_base_putreq.h"
#include "oshmem/runtime/runtime.h"
#include "orte/util/show_help.h"
#include "oshmem/mca/spml/ikrit/spml_ikrit_component.h"
/* Turn ON/OFF debug output from build (default 0) */
#ifndef SPML_IKRIT_PUT_DEBUG
#define SPML_IKRIT_PUT_DEBUG 0
#endif
typedef struct spml_ikrit_am_hdr {
uint64_t va;
} spml_ikrit_am_hdr_t;
struct mca_spml_ikrit_put_request {
mca_spml_base_put_request_t req_put;
mxm_send_req_t mxm_req;
int pe;
mxm_req_buffer_t iov[2];
spml_ikrit_am_hdr_t am_pkt;
};
typedef struct mca_spml_ikrit_put_request mca_spml_ikrit_put_request_t;
OBJ_CLASS_DECLARATION(mca_spml_ikrit_put_request_t);
#if MXM_API < MXM_VERSION(2,0)
static int spml_ikrit_get_ep_address(spml_ikrit_mxm_ep_conn_info_t *ep_info,
mxm_ptl_id_t ptlid)
{
size_t addrlen;
mxm_error_t err;
addrlen = sizeof(ep_info->addr.ptl_addr[ptlid]);
err = mxm_ep_address(mca_spml_ikrit.mxm_ep,
ptlid,
(struct sockaddr *) &ep_info->addr.ptl_addr[ptlid],
&addrlen);
if (MXM_OK != err) {
orte_show_help("help-oshmem-spml-ikrit.txt",
"unable to get endpoint address",
true,
mxm_error_string(err));
return OSHMEM_ERROR;
}
return OSHMEM_SUCCESS;
}
#else
static inline mxm_mem_key_t *to_mxm_mkey(sshmem_mkey_t *mkey) {
if (0 == mkey->len) {
return &mxm_empty_mem_key;
}
return (mxm_mem_key_t *)mkey->u.data;
}
#endif
static inline void mca_spml_irkit_req_wait(mxm_req_base_t *req)
{
while (!mxm_req_test(req))
opal_progress();
}
static int mca_spml_ikrit_put_request_free(struct oshmem_request_t** request)
{
mca_spml_ikrit_put_request_t *put_req =
*(mca_spml_ikrit_put_request_t **) request;
assert(false == put_req->req_put.req_base.req_free_called);
OPAL_THREAD_LOCK(&oshmem_request_lock);
put_req->req_put.req_base.req_free_called = true;
OMPI_FREE_LIST_RETURN_MT( &mca_spml_base_put_requests,
(ompi_free_list_item_t*)put_req);
OPAL_THREAD_UNLOCK(&oshmem_request_lock);
*request = SHMEM_REQUEST_NULL; /*MPI_REQUEST_NULL;*/
return OSHMEM_SUCCESS;
}
static int mca_spml_ikrit_put_request_cancel(struct oshmem_request_t * request,
int complete)
{
return OSHMEM_SUCCESS;
}
static void mca_spml_ikrit_put_request_construct(mca_spml_ikrit_put_request_t* req)
{
req->req_put.req_base.req_type = MCA_SPML_REQUEST_PUT;
req->req_put.req_base.req_oshmem.req_free = mca_spml_ikrit_put_request_free;
req->req_put.req_base.req_oshmem.req_cancel =
mca_spml_ikrit_put_request_cancel;
}
static void mca_spml_ikrit_put_request_destruct(mca_spml_ikrit_put_request_t* req)
{
}
OBJ_CLASS_INSTANCE( mca_spml_ikrit_put_request_t,
mca_spml_base_put_request_t,
mca_spml_ikrit_put_request_construct,
mca_spml_ikrit_put_request_destruct);
struct mca_spml_ikrit_get_request {
mca_spml_base_get_request_t req_get;
mxm_send_req_t mxm_req;
};
typedef struct mca_spml_ikrit_get_request mca_spml_ikrit_get_request_t;
OBJ_CLASS_DECLARATION(mca_spml_ikrit_get_request_t);
static int mca_spml_ikrit_get_request_free(struct oshmem_request_t** request)
{
mca_spml_ikrit_get_request_t *get_req =
*(mca_spml_ikrit_get_request_t **) request;
assert(false == get_req->req_get.req_base.req_free_called);
OPAL_THREAD_LOCK(&oshmem_request_lock);
get_req->req_get.req_base.req_free_called = true;
OMPI_FREE_LIST_RETURN_MT( &mca_spml_base_get_requests,
(ompi_free_list_item_t*)get_req);
OPAL_THREAD_UNLOCK(&oshmem_request_lock);
*request = SHMEM_REQUEST_NULL; /*MPI_REQUEST_NULL;*/
return OSHMEM_SUCCESS;
}
static int mca_spml_ikrit_get_request_cancel(struct oshmem_request_t * request,
int complete)
{
return OSHMEM_SUCCESS;
}
static void mca_spml_ikrit_get_request_construct(mca_spml_ikrit_get_request_t* req)
{
req->req_get.req_base.req_type = MCA_SPML_REQUEST_PUT;
req->req_get.req_base.req_oshmem.req_free = mca_spml_ikrit_get_request_free;
req->req_get.req_base.req_oshmem.req_cancel =
mca_spml_ikrit_get_request_cancel;
}
static void mca_spml_ikrit_get_request_destruct(mca_spml_ikrit_get_request_t* req)
{
}
OBJ_CLASS_INSTANCE( mca_spml_ikrit_get_request_t,
mca_spml_base_get_request_t,
mca_spml_ikrit_get_request_construct,
mca_spml_ikrit_get_request_destruct);
int mca_spml_ikrit_put_simple(void* dst_addr,
size_t size,
void* src_addr,
int dst);
mca_spml_ikrit_t mca_spml_ikrit = {
{
/* Init mca_spml_base_module_t */
mca_spml_ikrit_add_procs,
mca_spml_ikrit_del_procs,
mca_spml_ikrit_enable,
mca_spml_ikrit_register,
mca_spml_ikrit_deregister,
mca_spml_ikrit_oob_get_mkeys,
mca_spml_ikrit_put,
mca_spml_ikrit_put_nb,
mca_spml_ikrit_get,
mca_spml_ikrit_recv,
mca_spml_ikrit_send,
mca_spml_base_wait,
mca_spml_base_wait_nb,
mca_spml_ikrit_fence,
(void*)&mca_spml_ikrit
}
};
#if MXM_API < MXM_VERSION(2,0)
void mca_spml_ikrit_dump_stats(void);
void mca_spml_ikrit_dump_stats()
{
int num_procs;
int i;
char sbuf[1024];
FILE *fp;
fp = fmemopen(sbuf, sizeof(sbuf), "rw");
num_procs = oshmem_num_procs();
for (i = 0; i < num_procs; i++) {
mxm_print_conn_state(mca_spml_ikrit.mxm_peers[i]->mxm_conn,
MXM_STATE_DETAIL_LEVEL_DATA,
"",
fp);
printf("=========== pe:%d conn:%p stats:\n %s==================\n",
i,
mca_spml_ikrit.mxm_peers[i]->mxm_conn,
sbuf);
rewind(fp);
}
fclose(fp);
}
#endif
static inline mca_spml_ikrit_put_request_t *alloc_put_req(void)
{
mca_spml_ikrit_put_request_t *req;
ompi_free_list_item_t* item;
OMPI_FREE_LIST_WAIT_MT(&mca_spml_base_put_requests, item);
req = (mca_spml_ikrit_put_request_t *) item;
req->req_put.req_base.req_free_called = false;
req->req_put.req_base.req_oshmem.req_complete = false;
return req;
}
static inline mca_spml_ikrit_get_request_t *alloc_get_req(void)
{
mca_spml_ikrit_get_request_t *req;
ompi_free_list_item_t* item;
OMPI_FREE_LIST_WAIT_MT(&mca_spml_base_get_requests, item);
req = (mca_spml_ikrit_get_request_t *) item;
req->req_get.req_base.req_free_called = false;
req->req_get.req_base.req_oshmem.req_complete = false;
return req;
}
int mca_spml_ikrit_enable(bool enable)
{
SPML_VERBOSE(50, "*** ikrit ENABLED ****");
if (false == enable) {
return OSHMEM_SUCCESS;
}
ompi_free_list_init_new(&mca_spml_base_put_requests,
sizeof(mca_spml_ikrit_put_request_t),
opal_cache_line_size,
OBJ_CLASS(mca_spml_ikrit_put_request_t),
0,
opal_cache_line_size,
mca_spml_ikrit.free_list_num,
mca_spml_ikrit.free_list_max,
mca_spml_ikrit.free_list_inc,
NULL );
ompi_free_list_init_new(&mca_spml_base_get_requests,
sizeof(mca_spml_ikrit_get_request_t),
opal_cache_line_size,
OBJ_CLASS(mca_spml_ikrit_get_request_t),
0,
opal_cache_line_size,
mca_spml_ikrit.free_list_num,
mca_spml_ikrit.free_list_max,
mca_spml_ikrit.free_list_inc,
NULL );
mca_spml_ikrit.enabled = true;
return OSHMEM_SUCCESS;
}
static int create_ptl_idx(int dst_pe)
{
oshmem_proc_t *proc;
proc = oshmem_proc_group_find(oshmem_group_all, dst_pe);
proc->transport_ids = (char *) malloc(MXM_PTL_LAST * sizeof(char));
if (!proc->transport_ids)
return OSHMEM_ERROR;
proc->num_transports = 1;
#if MXM_API < MXM_VERSION(2,0)
if (oshmem_my_proc_id() == dst_pe)
proc->transport_ids[0] = MXM_PTL_SELF;
else
#endif
proc->transport_ids[0] = MXM_PTL_RDMA;
return OSHMEM_SUCCESS;
}
static void destroy_ptl_idx(int dst_pe)
{
oshmem_proc_t *proc;
proc = oshmem_proc_group_find(oshmem_group_all, dst_pe);
if (proc->transport_ids)
free(proc->transport_ids);
}
static void mxm_peer_construct(mxm_peer_t *p)
{
p->pe = -1;
p->n_active_puts = 0;
p->need_fence = 0;
}
static void mxm_peer_destruct(mxm_peer_t *p)
{
/* may be we need to remov item from list */
}
OBJ_CLASS_INSTANCE( mxm_peer_t,
opal_list_item_t,
mxm_peer_construct,
mxm_peer_destruct);
int mca_spml_ikrit_del_procs(oshmem_proc_t** procs, size_t nprocs)
{
size_t i, n;
opal_list_item_t *item;
int my_rank = oshmem_my_proc_id();
oshmem_shmem_barrier();
#if MXM_API >= MXM_VERSION(2,0)
if (mca_spml_ikrit.bulk_disconnect) {
mxm_ep_powerdown(mca_spml_ikrit.mxm_ep);
}
#endif
while (NULL != (item = opal_list_remove_first(&mca_spml_ikrit.active_peers))) {
};
OBJ_DESTRUCT(&mca_spml_ikrit.active_peers);
for (n = 0; n < nprocs; n++) {
i = (my_rank + n) % nprocs;
if (mca_spml_ikrit.mxm_peers[i]->mxm_conn) {
mxm_ep_disconnect(mca_spml_ikrit.mxm_peers[i]->mxm_conn);
}
if (mca_spml_ikrit.hw_rdma_channel && mca_spml_ikrit.mxm_peers[i]->mxm_hw_rdma_conn) {
mxm_ep_disconnect(mca_spml_ikrit.mxm_peers[i]->mxm_hw_rdma_conn);
}
destroy_ptl_idx(i);
if (mca_spml_ikrit.mxm_peers[i]) {
OBJ_RELEASE(mca_spml_ikrit.mxm_peers[i]);
}
}
if (mca_spml_ikrit.mxm_peers)
free(mca_spml_ikrit.mxm_peers);
return OSHMEM_SUCCESS;
}
int mca_spml_ikrit_add_procs(oshmem_proc_t** procs, size_t nprocs)
{
spml_ikrit_mxm_ep_conn_info_t *ep_info = NULL;
spml_ikrit_mxm_ep_conn_info_t *ep_hw_rdma_info = NULL;
spml_ikrit_mxm_ep_conn_info_t my_ep_info;
#if MXM_API < MXM_VERSION(2,0)
mxm_conn_req_t *conn_reqs;
int timeout;
#else
size_t mxm_addr_len = MXM_MAX_ADDR_LEN;
#endif
mxm_error_t err;
size_t i, n;
int rc = OSHMEM_ERROR;
oshmem_proc_t *proc_self;
int my_rank = oshmem_my_proc_id();
OBJ_CONSTRUCT(&mca_spml_ikrit.active_peers, opal_list_t);
/* Allocate connection requests */
#if MXM_API < MXM_VERSION(2,0)
conn_reqs = malloc(nprocs * sizeof(mxm_conn_req_t));
if (NULL == conn_reqs) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
goto bail;
}
memset(conn_reqs, 0x0, sizeof(mxm_conn_req_t));
#endif
ep_info = malloc(nprocs * sizeof(spml_ikrit_mxm_ep_conn_info_t));
if (NULL == ep_info) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
goto bail;
}
memset(ep_info, 0x0, sizeof(spml_ikrit_mxm_ep_conn_info_t));
if (mca_spml_ikrit.hw_rdma_channel) {
ep_hw_rdma_info = malloc(nprocs * sizeof(spml_ikrit_mxm_ep_conn_info_t));
if (NULL == ep_hw_rdma_info) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
goto bail;
}
memset(ep_hw_rdma_info, 0x0, sizeof(spml_ikrit_mxm_ep_conn_info_t));
}
mca_spml_ikrit.mxm_peers = (mxm_peer_t **) malloc(nprocs
* sizeof(*(mca_spml_ikrit.mxm_peers)));
if (NULL == mca_spml_ikrit.mxm_peers) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
goto bail;
}
#if MXM_API < MXM_VERSION(2,0)
if (OSHMEM_SUCCESS
!= spml_ikrit_get_ep_address(&my_ep_info, MXM_PTL_SELF)) {
return OSHMEM_ERROR;
}
if (OSHMEM_SUCCESS
!= spml_ikrit_get_ep_address(&my_ep_info, MXM_PTL_RDMA)) {
return OSHMEM_ERROR;
}
#else
if (mca_spml_ikrit.hw_rdma_channel) {
err = mxm_ep_get_address(mca_spml_ikrit.mxm_hw_rdma_ep, &my_ep_info.addr.ep_addr, &mxm_addr_len);
if (MXM_OK != err) {
orte_show_help("help-oshmem-spml-ikrit.txt", "unable to get endpoint address", true,
mxm_error_string(err));
return OSHMEM_ERROR;
}
oshmem_shmem_allgather(&my_ep_info, ep_hw_rdma_info,
sizeof(spml_ikrit_mxm_ep_conn_info_t));
}
err = mxm_ep_get_address(mca_spml_ikrit.mxm_ep, &my_ep_info.addr.ep_addr, &mxm_addr_len);
if (MXM_OK != err) {
orte_show_help("help-oshmem-spml-ikrit.txt", "unable to get endpoint address", true,
mxm_error_string(err));
return OSHMEM_ERROR;
}
#endif
oshmem_shmem_allgather(&my_ep_info, ep_info,
sizeof(spml_ikrit_mxm_ep_conn_info_t));
opal_progress_register(spml_ikrit_progress);
/* Get the EP connection requests for all the processes from modex */
for (n = 0; n < nprocs; ++n) {
/* mxm 2.0 keeps its connections on a list. Make sure
* that list have different order on every rank */
i = (my_rank + n) % nprocs;
mca_spml_ikrit.mxm_peers[i] = OBJ_NEW(mxm_peer_t);
if (NULL == mca_spml_ikrit.mxm_peers[i]) {
rc = OSHMEM_ERR_OUT_OF_RESOURCE;
goto bail;
}
mca_spml_ikrit.mxm_peers[i]->pe = i;
#if MXM_API < MXM_VERSION(2,0)
conn_reqs[i].ptl_addr[MXM_PTL_SELF] =
(struct sockaddr *) &ep_info[i].addr.ptl_addr[MXM_PTL_SELF];
conn_reqs[i].ptl_addr[MXM_PTL_SHM] = NULL;
conn_reqs[i].ptl_addr[MXM_PTL_RDMA] =
(struct sockaddr *) &ep_info[i].addr.ptl_addr[MXM_PTL_RDMA];
#else
err = mxm_ep_connect(mca_spml_ikrit.mxm_ep, ep_info[i].addr.ep_addr, &mca_spml_ikrit.mxm_peers[i]->mxm_conn);
if (MXM_OK != err) {
SPML_ERROR("MXM returned connect error: %s\n", mxm_error_string(err));
goto bail;
}
if (OSHMEM_SUCCESS != create_ptl_idx(i))
goto bail;
mxm_conn_ctx_set(mca_spml_ikrit.mxm_peers[i]->mxm_conn, mca_spml_ikrit.mxm_peers[i]);
if (mca_spml_ikrit.hw_rdma_channel) {
err = mxm_ep_connect(mca_spml_ikrit.mxm_hw_rdma_ep, ep_hw_rdma_info[i].addr.ep_addr, &mca_spml_ikrit.mxm_peers[i]->mxm_hw_rdma_conn);
if (MXM_OK != err) {
SPML_ERROR("MXM returned connect error: %s\n", mxm_error_string(err));
goto bail;
}
} else {
mca_spml_ikrit.mxm_peers[i]->mxm_hw_rdma_conn = mca_spml_ikrit.mxm_peers[i]->mxm_conn;
}
#endif
}
#if MXM_API < MXM_VERSION(2,0)
/* Connect to remote peers */
if (mxm_get_version() < MXM_VERSION(1,5)) {
timeout = 1000;
} else {
timeout = -1;
}
err = mxm_ep_connect(mca_spml_ikrit.mxm_ep, conn_reqs, nprocs, timeout);
if (MXM_OK != err) {
SPML_ERROR("MXM returned connect error: %s\n", mxm_error_string(err));
for (i = 0; i < nprocs; ++i) {
if (MXM_OK != conn_reqs[i].error) {
SPML_ERROR("MXM EP connect to %s error: %s\n",
procs[i]->proc_hostname, mxm_error_string(conn_reqs[i].error));
}
}
rc = OSHMEM_ERR_CONNECTION_FAILED;
goto bail;
}
/* Save returned connections */
for (i = 0; i < nprocs; ++i) {
mca_spml_ikrit.mxm_peers[i]->mxm_conn = conn_reqs[i].conn;
if (OSHMEM_SUCCESS != create_ptl_idx(i))
goto bail;
mxm_conn_ctx_set(conn_reqs[i].conn, mca_spml_ikrit.mxm_peers[i]);
}
if (ep_info)
free(ep_info);
if (conn_reqs)
free(conn_reqs);
#endif
#if MXM_API >= MXM_VERSION(2,0)
if (mca_spml_ikrit.bulk_connect) {
/* Need a barrier to ensure remote peers already created connection */
oshmem_shmem_barrier();
mxm_ep_wireup(mca_spml_ikrit.mxm_ep);
}
#endif
proc_self = oshmem_proc_group_find(oshmem_group_all, my_rank);
/* identify local processes and change transport to SHM */
for (i = 0; i < nprocs; i++) {
if (procs[i]->super.proc_name.jobid != proc_self->super.proc_name.jobid ||
!OPAL_PROC_ON_LOCAL_NODE(procs[i]->super.proc_flags)) {
continue;
}
if (procs[i] == proc_self)
continue;
/* use zcopy for put/get via sysv shared memory */
procs[i]->transport_ids[0] = MXM_PTL_SHM;
procs[i]->transport_ids[1] = MXM_PTL_RDMA;
procs[i]->num_transports = 2;
}
SPML_VERBOSE(50, "*** ADDED PROCS ***");
return OSHMEM_SUCCESS;
bail:
#if MXM_API < MXM_VERSION(2,0)
if (conn_reqs)
free(conn_reqs);
if (ep_info)
free(ep_info);
#endif
SPML_ERROR("add procs FAILED rc=%d", rc);
return rc;
}
sshmem_mkey_t *mca_spml_ikrit_register(void* addr,
size_t size,
uint64_t shmid,
int *count)
{
int i;
sshmem_mkey_t *mkeys;
#if MXM_API >= MXM_VERSION(2,0)
mxm_error_t err;
mxm_mem_key_t *m_key;
#endif
*count = 0;
mkeys = (sshmem_mkey_t *) calloc(1, MXM_PTL_LAST * sizeof(*mkeys));
if (!mkeys) {
return NULL ;
}
for (i = 0; i < MXM_PTL_LAST; i++) {
mkeys[i].u.key = MAP_SEGMENT_SHM_INVALID;
switch (i) {
case MXM_PTL_SHM:
if ((int)shmid != MAP_SEGMENT_SHM_INVALID) {
mkeys[i].u.key = shmid;
mkeys[i].va_base = 0;
} else {
mkeys[i].len = 0;
mkeys[i].va_base = addr;
}
mkeys[i].spml_context = 0;
break;
#if MXM_API < MXM_VERSION(2,0)
case MXM_PTL_SELF:
mkeys[i].len = 0;
mkeys[i].spml_context = 0;
mkeys[i].va_base = addr;
break;
#endif
case MXM_PTL_RDMA:
mkeys[i].va_base = addr;
mkeys[i].spml_context = 0;
#if MXM_API < MXM_VERSION(2,0)
mkeys[i].len = 0;
#else
if (mca_spml_ikrit.ud_only && !mca_spml_ikrit.hw_rdma_channel) {
mkeys[i].len = 0;
break;
}
err = mxm_mem_map(mca_spml_ikrit.mxm_context, &addr, &size, 0, 0, 0);
if (MXM_OK != err) {
SPML_ERROR("Failed to register memory: %s", mxm_error_string(err));
goto error_out;
}
mkeys[i].spml_context = (void *)(unsigned long)size;
m_key = malloc(sizeof(*m_key));
if (NULL == m_key) {
SPML_ERROR("Failed to allocate m_key memory");
goto error_out;
}
mkeys[i].len = sizeof(*m_key);
mkeys[i].u.data = m_key;
err = mxm_mem_get_key(mca_spml_ikrit.mxm_context, addr, m_key);
if (MXM_OK != err) {
SPML_ERROR("Failed to get memory key: %s", mxm_error_string(err));
goto error_out;
}
#endif
break;
default:
SPML_ERROR("unsupported PTL: %d", i);
goto error_out;
}
SPML_VERBOSE(5,
"rank %d ptl %d addr %p size %llu %s",
oshmem_proc_local_proc->super.proc_name.vpid, i, addr, (unsigned long long)size,
mca_spml_base_mkey2str(&mkeys[i]));
}
*count = MXM_PTL_LAST;
return mkeys;
error_out:
mca_spml_ikrit_deregister(mkeys);
return NULL ;
}
int mca_spml_ikrit_deregister(sshmem_mkey_t *mkeys)
{
int i;
MCA_SPML_CALL(fence());
if (!mkeys)
return OSHMEM_SUCCESS;
for (i = 0; i < MXM_PTL_LAST; i++) {
switch (i) {
#if MXM_API < MXM_VERSION(2,0)
case MXM_PTL_SELF:
#endif
case MXM_PTL_SHM:
break;
case MXM_PTL_RDMA:
/* dereg memory */
if (!mkeys[i].spml_context)
break;
#if MXM_API >= MXM_VERSION(2,0)
mxm_mem_unmap(mca_spml_ikrit.mxm_context,
(void *)mkeys[i].va_base,
(unsigned long)mkeys[i].spml_context,
0);
if (0 < mkeys[i].len) {
free(mkeys[i].u.data);
}
#endif
break;
}
}
return OSHMEM_SUCCESS;
}
static inline int get_ptl_id(int dst)
{
oshmem_proc_t *proc;
/* get endpoint and btl */
proc = oshmem_proc_group_all(dst);
if (!proc) {
SPML_ERROR("Can not find destination proc for pe=%d", dst);
oshmem_shmem_abort(-1);
return -1;
}
return proc->transport_ids[0];
}
int mca_spml_ikrit_oob_get_mkeys(int pe, uint32_t seg, sshmem_mkey_t *mkeys)
{
int ptl;
ptl = get_ptl_id(pe);
if (ptl < 0)
return OSHMEM_ERROR;
if (ptl != MXM_PTL_RDMA)
return OSHMEM_ERROR;
#if MXM_API < MXM_VERSION(2,0)
if (seg > 1)
return OSHMEM_ERROR;
mkeys[ptl].len = 0;
mkeys[ptl].u.key = MAP_SEGMENT_SHM_INVALID;
return OSHMEM_SUCCESS;
#else
/* we are actually registering memory in 2.0 and later.
* So can only skip mkey exchange when ud is the only transport
*/
if (mca_spml_ikrit.ud_only) {
mkeys[ptl].len = 0;
mkeys[ptl].u.key = MAP_SEGMENT_SHM_INVALID;
return OSHMEM_SUCCESS;
}
return OSHMEM_ERROR;
#endif
}
static int mca_spml_ikrit_get_helper(mxm_send_req_t *sreq,
void *src_addr,
size_t size,
void *dst_addr,
int src)
{
/* shmem spec states that get() operations are blocking. So it is enough
to have single mxm request. Also we count on mxm doing copy */
void *rva;
sshmem_mkey_t *r_mkey;
int ptl_id;
ptl_id = get_ptl_id(src);
/* already tried to send via shm and failed. go via rdma */
if (ptl_id == MXM_PTL_SHM)
ptl_id = MXM_PTL_RDMA;
/**
* Get the address to the remote rkey.
**/
r_mkey = mca_memheap.memheap_get_cached_mkey(src,
src_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
src, src_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
SPML_VERBOSE(100,
"get: pe:%d ptl=%d src=%p -> dst: %p sz=%d. src_rva=%p, %s",
src, ptl_id, src_addr, dst_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
/* mxm does not really cares for get lkey */
sreq->base.mq = mca_spml_ikrit.mxm_mq;
sreq->base.conn = mca_spml_ikrit.mxm_peers[src]->mxm_conn;
sreq->base.data_type = MXM_REQ_DATA_BUFFER;
sreq->base.data.buffer.ptr = dst_addr;
sreq->base.data.buffer.length = size;
#if MXM_API < MXM_VERSION(2,0)
sreq->base.data.buffer.memh = NULL;
sreq->op.mem.remote_memh = NULL;
#else
sreq->op.mem.remote_mkey = to_mxm_mkey(r_mkey);
#endif
sreq->opcode = MXM_REQ_OP_GET;
sreq->op.mem.remote_vaddr = (intptr_t) rva;
sreq->base.state = MXM_REQ_NEW;
return OSHMEM_SUCCESS;
}
static inline int mca_spml_ikrit_get_shm(void *src_addr,
size_t size,
void *dst_addr,
int src)
{
int ptl_id;
void *rva;
sshmem_mkey_t *r_mkey;
ptl_id = get_ptl_id(src);
/**
* Get the address to the remote rkey.
**/
if (ptl_id != MXM_PTL_SHM)
return OSHMEM_ERROR;
r_mkey = mca_memheap.memheap_get_cached_mkey(src,
src_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
src, src_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
if (!mca_memheap_base_can_local_copy(r_mkey, src_addr))
return OSHMEM_ERROR;
SPML_VERBOSE(100,
"shm get: pe:%d src=%p -> dst: %p sz=%d. src_rva=%p, %s",
src, src_addr, dst_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
memcpy(dst_addr, (void *) (unsigned long) rva, size);
opal_progress();
return OSHMEM_SUCCESS;
}
int mca_spml_ikrit_get(void *src_addr, size_t size, void *dst_addr, int src)
{
mxm_send_req_t sreq;
if (0 >= size) {
return OSHMEM_SUCCESS;
}
if (OSHMEM_SUCCESS == mca_spml_ikrit_get_shm(src_addr, size, dst_addr, src))
return OSHMEM_SUCCESS;
if (OSHMEM_SUCCESS
!= mca_spml_ikrit_get_helper(&sreq,
src_addr,
size,
dst_addr,
src)) {
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
#if MXM_API < MXM_VERSION(2,0)
sreq.base.flags = MXM_REQ_FLAG_BLOCKING;
#else
sreq.flags = MXM_REQ_SEND_FLAG_BLOCKING;
#endif
sreq.base.completed_cb = NULL;
mxm_req_send(&sreq);
opal_progress();
mca_spml_irkit_req_wait(&sreq.base);
if (MXM_OK != sreq.base.error) {
SPML_ERROR("get request failed: %s - aborting",
mxm_error_string(sreq.base.error));
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
return OSHMEM_SUCCESS;
}
static inline void get_completion_cb(void *ctx)
{
mca_spml_ikrit_get_request_t *get_req = (mca_spml_ikrit_get_request_t *) ctx;
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_active_gets, -1);
get_req->req_get.req_base.req_spml_complete = true;
get_req->req_get.req_base.req_oshmem.req_status.SHMEM_ERROR =
OSHMEM_SUCCESS;
oshmem_request_complete(&get_req->req_get.req_base.req_oshmem, 1);
oshmem_request_free((oshmem_request_t**) &get_req);
}
/* extension. used 4 fence implementation b4 fence was added to mxm */
int mca_spml_ikrit_get_async(void *src_addr,
size_t size,
void *dst_addr,
int src)
{
mca_spml_ikrit_get_request_t *get_req;
if (OSHMEM_SUCCESS == mca_spml_ikrit_get_shm(src_addr, size, dst_addr, src))
return OSHMEM_SUCCESS;
get_req = alloc_get_req();
if (NULL == get_req) {
SPML_ERROR("out of get requests - aborting");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
if (OSHMEM_SUCCESS
!= mca_spml_ikrit_get_helper(&get_req->mxm_req,
src_addr,
size,
dst_addr,
src)) {
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
#if MXM_API < MXM_VERSION(2,0)
get_req->mxm_req.base.flags = 0;
#else
get_req->mxm_req.flags = 0;
#endif
get_req->mxm_req.base.completed_cb = get_completion_cb;
get_req->mxm_req.base.context = get_req;
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_active_gets, 1);
mxm_req_send(&get_req->mxm_req);
if (MXM_OK != get_req->mxm_req.base.error) {
SPML_ERROR("get request failed: %s - aborting",
mxm_error_string(get_req->mxm_req.base.error));
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
return OSHMEM_SUCCESS;
}
static inline void fence_completion_cb(void *ctx)
{
mca_spml_ikrit_get_request_t *fence_req =
(mca_spml_ikrit_get_request_t *) ctx;
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_mxm_fences, -1);
fence_req->req_get.req_base.req_spml_complete = true;
fence_req->req_get.req_base.req_oshmem.req_status.SHMEM_ERROR =
OSHMEM_SUCCESS;
oshmem_request_complete(&fence_req->req_get.req_base.req_oshmem, 1);
oshmem_request_free((oshmem_request_t**) &fence_req);
}
static int mca_spml_ikrit_mxm_fence(int dst)
{
mca_spml_ikrit_get_request_t *fence_req;
fence_req = alloc_get_req();
if (NULL == fence_req) {
SPML_ERROR("out of get requests - aborting");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
fence_req->mxm_req.base.mq = mca_spml_ikrit.mxm_mq;
fence_req->mxm_req.base.conn = mca_spml_ikrit.mxm_peers[dst]->mxm_conn;
#if MXM_API < MXM_VERSION(2,0)
fence_req->mxm_req.opcode = MXM_REQ_OP_FENCE;
fence_req->mxm_req.base.flags = MXM_REQ_FLAG_SEND_SYNC;
#else
fence_req->mxm_req.opcode = MXM_REQ_OP_PUT_SYNC;
fence_req->mxm_req.flags = MXM_REQ_SEND_FLAG_FENCE;
fence_req->mxm_req.op.mem.remote_vaddr = 0;
fence_req->mxm_req.op.mem.remote_mkey = &mxm_empty_mem_key;
fence_req->mxm_req.base.data_type = MXM_REQ_DATA_BUFFER;
fence_req->mxm_req.base.data.buffer.ptr = 0;
fence_req->mxm_req.base.data.buffer.length = 0;
#endif
fence_req->mxm_req.base.state = MXM_REQ_NEW;
fence_req->mxm_req.base.completed_cb = fence_completion_cb;
fence_req->mxm_req.base.context = fence_req;
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_mxm_fences, 1);
mxm_req_send(&fence_req->mxm_req);
return OSHMEM_SUCCESS;
}
static inline void put_completion_cb(void *ctx)
{
mca_spml_ikrit_put_request_t *put_req = (mca_spml_ikrit_put_request_t *) ctx;
mxm_peer_t *peer;
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_active_puts, -1);
peer = mca_spml_ikrit.mxm_peers[put_req->pe];
/* this was last put in progress. Remove peer from the list so that we do not need explicit fence */
#if SPML_IKRIT_PUT_DEBUG == 1
if (peer) {
if (peer->n_active_puts <= 0) {
/* actually this can happen because fence forces ref count to 0 while puts still may be in flight */
SPML_VERBOSE(1, "pe %d n_active_puts %d", put_req->pe, peer->n_active_puts);
}
}
if (put_req->mxm_req.base.state != MXM_REQ_COMPLETED)
SPML_ERROR("oops: pe %d uncompleted request state %d", put_req->pe, put_req->mxm_req.base.state);
#endif
if (0 < peer->n_active_puts) {
peer->n_active_puts--;
#if MXM_API < MXM_VERSION(2,0)
if (0 == peer->n_active_puts &&
(put_req->mxm_req.base.flags & MXM_REQ_FLAG_SEND_SYNC)) {
opal_list_remove_item(&mca_spml_ikrit.active_peers, &peer->super);
peer->need_fence = 0;
}
#else
if (0 == peer->n_active_puts &&
(put_req->mxm_req.opcode == MXM_REQ_OP_PUT_SYNC)) {
opal_list_remove_item(&mca_spml_ikrit.active_peers, &peer->super);
peer->need_fence = 0;
}
#endif
}
put_req->req_put.req_base.req_spml_complete = true;
put_req->req_put.req_base.req_oshmem.req_status.SHMEM_ERROR =
OSHMEM_SUCCESS;
oshmem_request_complete(&put_req->req_put.req_base.req_oshmem, 1);
oshmem_request_free((oshmem_request_t**) &put_req);
}
/**
* TODO: using put request as handle is not good.
*/
static inline int mca_spml_ikrit_put_internal(void* dst_addr,
size_t size,
void* src_addr,
int dst,
void **handle,
int zcopy)
{
void *rva;
mca_spml_ikrit_put_request_t *put_req;
int ptl_id;
sshmem_mkey_t *r_mkey;
static int count;
int need_progress = 0;
if (0 >= size) {
return OSHMEM_SUCCESS;
}
ptl_id = get_ptl_id(dst);
/* Get rkey of remote PE (dst proc) which must be on memheap */
r_mkey = mca_memheap.memheap_get_cached_mkey(dst,
dst_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
dst, dst_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
#if SPML_IKRIT_PUT_DEBUG == 1
SPML_VERBOSE(100, "put: pe:%d ptl=%d dst=%p <- src: %p sz=%d. dst_rva=%p, %s",
dst, ptl_id, dst_addr, src_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
#endif
if (ptl_id == MXM_PTL_SHM) {
if (mca_memheap_base_can_local_copy(r_mkey, dst_addr)) {
memcpy((void *) (unsigned long) rva, src_addr, size);
/* call progress as often as we would have with regular put */
if (++count % SPML_IKRIT_PACKETS_PER_SYNC == 0)
mxm_progress(mca_spml_ikrit.mxm_context);
return OSHMEM_SUCCESS;
}
/* segment not mapped - fallback to rmda */
ptl_id = MXM_PTL_RDMA;
r_mkey = mca_memheap.memheap_get_cached_mkey(dst,
dst_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
dst, dst_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
}
#if SPML_IKRIT_PUT_DEBUG == 1
SPML_VERBOSE(100, "put: pe:%d ptl=%d dst=%p <- src: %p sz=%d. dst_rva=%p, %s",
dst, ptl_id, dst_addr, src_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
#endif
put_req = alloc_put_req();
if (NULL == put_req) {
SPML_ERROR("out of put requests - aborting");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
if (handle)
*handle = put_req;
/* fill out request */
put_req->mxm_req.base.mq = mca_spml_ikrit.mxm_mq;
/* request immediate responce if we are getting low on send buffers. We only get responce from remote on ack timeout.
* Also request explicit ack once in a while */
#if MXM_API < MXM_VERSION(2,0)
put_req->mxm_req.opcode = MXM_REQ_OP_PUT;
if (mca_spml_ikrit.free_list_max - mca_spml_ikrit.n_active_puts <= SPML_IKRIT_PUT_LOW_WATER ||
(mca_spml_ikrit.mxm_peers[dst]->n_active_puts + 1) % SPML_IKRIT_PACKETS_PER_SYNC == 0) {
put_req->mxm_req.base.flags = MXM_REQ_FLAG_SEND_SYNC;
need_progress = 1;
} else {
put_req->mxm_req.base.flags = MXM_REQ_FLAG_SEND_LAZY|MXM_REQ_FLAG_SEND_SYNC;
}
#else
put_req->mxm_req.flags = 0;
if (mca_spml_ikrit.free_list_max - mca_spml_ikrit.n_active_puts <= SPML_IKRIT_PUT_LOW_WATER ||
(int)opal_list_get_size(&mca_spml_ikrit.active_peers) > mca_spml_ikrit.unsync_conn_max ||
(mca_spml_ikrit.mxm_peers[dst]->n_active_puts + 1) % SPML_IKRIT_PACKETS_PER_SYNC == 0) {
need_progress = 1;
put_req->mxm_req.opcode = MXM_REQ_OP_PUT_SYNC;
} else {
put_req->mxm_req.opcode = MXM_REQ_OP_PUT;
}
if (!zcopy) {
put_req->mxm_req.flags |= MXM_REQ_SEND_FLAG_BLOCKING;
}
#endif
put_req->mxm_req.base.conn = mca_spml_ikrit.mxm_peers[dst]->mxm_conn;
put_req->mxm_req.base.data_type = MXM_REQ_DATA_BUFFER;
put_req->mxm_req.base.data.buffer.ptr = src_addr;
put_req->mxm_req.base.data.buffer.length = size;
put_req->mxm_req.base.completed_cb = put_completion_cb;
put_req->mxm_req.base.context = put_req;
put_req->mxm_req.op.mem.remote_vaddr = (intptr_t) rva;
put_req->mxm_req.base.state = MXM_REQ_NEW;
put_req->pe = dst;
#if MXM_API < MXM_VERSION(2,0)
put_req->mxm_req.base.data.buffer.memh = NULL;
put_req->mxm_req.op.mem.remote_memh = NULL;
#else
put_req->mxm_req.op.mem.remote_mkey = to_mxm_mkey(r_mkey);
#endif
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_active_puts, 1);
if (mca_spml_ikrit.mxm_peers[dst]->need_fence == 0) {
opal_list_append(&mca_spml_ikrit.active_peers,
&mca_spml_ikrit.mxm_peers[dst]->super);
mca_spml_ikrit.mxm_peers[dst]->need_fence = 1;
}
mca_spml_ikrit.mxm_peers[dst]->n_active_puts++;
mxm_req_send(&put_req->mxm_req);
if (MXM_OK != put_req->mxm_req.base.error) {
OPAL_THREAD_ADD32(&mca_spml_ikrit.n_active_puts, -1);
SPML_ERROR("put request %p failed: %s - aborting",
(void*)put_req, mxm_error_string(put_req->mxm_req.base.error));
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
if (need_progress)
mxm_progress(mca_spml_ikrit.mxm_context);
return OSHMEM_SUCCESS;
}
/* simple buffered put implementation. NOT IN USE
* Problems:
* - slighly worse performance than impl based on non buffered put
* - fence complexity is O(n_active_connections) instead of O(n_connections_with_outstanding_puts).
* Later is bounded by the network RTT & mxm ack timer.
*/
int mca_spml_ikrit_put_simple(void* dst_addr,
size_t size,
void* src_addr,
int dst)
{
void *rva;
mxm_send_req_t mxm_req;
mxm_wait_t wait;
int ptl_id;
sshmem_mkey_t *r_mkey;
static int count;
ptl_id = get_ptl_id(dst);
/* Get rkey of remote PE (dst proc) which must be on memheap */
r_mkey = mca_memheap.memheap_get_cached_mkey(dst,
//(unsigned long) dst_addr,
dst_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
dst, dst_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
#if SPML_IKRIT_PUT_DEBUG == 1
SPML_VERBOSE(100, "put: pe:%d ptl=%d dst=%p <- src: %p sz=%d. dst_rva=%p, %s",
dst, ptl_id, dst_addr, src_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
#endif
if (ptl_id == MXM_PTL_SHM) {
if (mca_memheap_base_can_local_copy(r_mkey, dst_addr)) {
memcpy((void *) (unsigned long) rva, src_addr, size);
/* call progress as often as we would have with regular put */
if (++count % SPML_IKRIT_PACKETS_PER_SYNC == 0)
mxm_progress(mca_spml_ikrit.mxm_context);
return OSHMEM_SUCCESS;
}
/* segment not mapped - fallback to rmda */
ptl_id = MXM_PTL_RDMA;
r_mkey = mca_memheap.memheap_get_cached_mkey(dst,
//(unsigned long) dst_addr,
dst_addr,
ptl_id,
&rva);
if (!r_mkey) {
SPML_ERROR("pe=%d: %p is not address of shared variable",
dst, dst_addr);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
}
#if SPML_IKRIT_PUT_DEBUG == 1
SPML_VERBOSE(100, "put: pe:%d ptl=%d dst=%p <- src: %p sz=%d. dst_rva=%p, %s",
dst, ptl_id, dst_addr, src_addr, (int)size, (void *)rva, mca_spml_base_mkey2str(r_mkey));
#endif
/* fill out request */
mxm_req.base.mq = mca_spml_ikrit.mxm_mq;
#if MXM_API < MXM_VERSION(2,0)
mxm_req.base.flags = MXM_REQ_FLAG_BLOCKING;
#else
mxm_req.flags = MXM_REQ_SEND_FLAG_BLOCKING;
#endif
mxm_req.base.conn = mca_spml_ikrit.mxm_peers[dst]->mxm_conn;
mxm_req.base.data_type = MXM_REQ_DATA_BUFFER;
mxm_req.base.data.buffer.ptr = src_addr;
mxm_req.base.data.buffer.length = size;
mxm_req.base.completed_cb = 0;
mxm_req.base.context = 0;
mxm_req.opcode = MXM_REQ_OP_PUT;
mxm_req.op.mem.remote_vaddr = (intptr_t) rva;
mxm_req.base.state = MXM_REQ_NEW;
mxm_req.base.error = MXM_OK;
#if MXM_API < MXM_VERSION(2, 0)
mxm_req.base.data.buffer.memh = NULL;
mxm_req.op.mem.remote_memh = NULL;
#else
mxm_req.op.mem.remote_mkey = to_mxm_mkey(r_mkey);
#endif
if (mca_spml_ikrit.mxm_peers[dst]->need_fence == 0) {
opal_list_append(&mca_spml_ikrit.active_peers,
&mca_spml_ikrit.mxm_peers[dst]->super);
mca_spml_ikrit.mxm_peers[dst]->need_fence = 1;
}
mxm_req_send(&mxm_req);
if (MXM_OK != mxm_req.base.error) {
SPML_ERROR("put request failed: %s(%d) - aborting",
mxm_error_string(mxm_req.base.error), mxm_req.base.error);
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
wait.req = &mxm_req.base;
wait.state = (mxm_req_state_t)(MXM_REQ_SENT | MXM_REQ_COMPLETED);
wait.progress_cb = NULL;
wait.progress_arg = NULL;
mxm_wait(&wait);
return OSHMEM_SUCCESS;
}
int mca_spml_ikrit_put_nb(void* dst_addr,
size_t size,
void* src_addr,
int dst,
void **handle)
{
int err;
err = mca_spml_ikrit_put_internal(dst_addr, size, src_addr, dst, handle, 1);
if (OSHMEM_SUCCESS != err) {
SPML_ERROR("put failed - aborting");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
return OSHMEM_SUCCESS;
}
int mca_spml_ikrit_put(void* dst_addr, size_t size, void* src_addr, int dst)
{
int err;
mca_spml_ikrit_put_request_t *put_req;
mxm_wait_t wait;
put_req = 0;
err = mca_spml_ikrit_put_internal(dst_addr,
size,
src_addr,
dst,
(void **) &put_req,
0);
if (OSHMEM_SUCCESS != err) {
SPML_ERROR("put failed - aborting");
oshmem_shmem_abort(-1);
return OSHMEM_ERROR;
}
if (!put_req)
return OSHMEM_SUCCESS;
wait.req = &put_req->mxm_req.base;
wait.state = (mxm_req_state_t)(MXM_REQ_SENT | MXM_REQ_COMPLETED);
wait.progress_cb = NULL;
wait.progress_arg = NULL;
mxm_wait(&wait);
return OSHMEM_SUCCESS;
}
int mca_spml_ikrit_fence(void)
{
mxm_peer_t *peer;
opal_list_item_t *item;
SPML_VERBOSE(20,
"Into fence with %d active puts on %d pes",
mca_spml_ikrit.n_active_puts, (int)opal_list_get_size(&mca_spml_ikrit.active_peers));
/* puts(unless are send sync) are completed by remote side lazily. That is either when remote decides to
* ack window which can take hundreds of ms. So speed things up by doing fence */
while (NULL != (item = opal_list_remove_first(&mca_spml_ikrit.active_peers))) {
peer = (mxm_peer_t *) item;
peer->n_active_puts = 0;
peer->need_fence = 0;
mca_spml_ikrit_mxm_fence(peer->pe);
}
while (0 < mca_spml_ikrit.n_mxm_fences) {
oshmem_request_wait_any_completion();
}
SPML_VERBOSE(20, "fence completed");
return OSHMEM_SUCCESS;
}
/* blocking receive */
int mca_spml_ikrit_recv(void* buf, size_t size, int src)
{
mxm_recv_req_t req;
char dummy_buf[1];
/* tag mask 0 matches any tag */
SPML_VERBOSE(100,
"want to recv from src %d, size %d buf %p",
src, (int)size, buf);
req.tag = src == SHMEM_ANY_SOURCE ? 0 : src;
req.tag_mask = src == SHMEM_ANY_SOURCE ? 0 : 0xFFFFFFFF;
req.base.state = MXM_REQ_NEW;
req.base.mq = mca_spml_ikrit.mxm_mq;
req.base.conn = NULL;
#if MXM_API < MXM_VERSION(2,0)
req.base.flags = MXM_REQ_FLAG_BLOCKING;
#endif
req.base.completed_cb = NULL;
req.base.data_type = MXM_REQ_DATA_BUFFER;
req.base.data.buffer.ptr = buf == NULL ? dummy_buf : buf;
req.base.data.buffer.length = size == 0 ? sizeof(dummy_buf) : size;
req.base.data.buffer.memh = NULL;
mxm_req_recv(&req);
mca_spml_irkit_req_wait(&req.base);
if (req.base.error != MXM_OK) {
return OSHMEM_ERROR;
}
SPML_VERBOSE(100,
"recvd from tag %d len %d",
req.completion.sender_tag, (int)req.completion.actual_len);
return OSHMEM_SUCCESS;
}
/* for now only do blocking copy send */
int mca_spml_ikrit_send(void* buf,
size_t size,
int dst,
mca_spml_base_put_mode_t mode)
{
mxm_send_req_t req;
char dummy_buf[1];
SPML_VERBOSE(100,
"sending %p size %d to %d, mode %d",
buf, (int)size, dst, (int)mode);
req.opcode = MXM_REQ_OP_SEND;
req.op.send.tag = oshmem_my_proc_id();
req.base.state = MXM_REQ_NEW;
req.base.mq = mca_spml_ikrit.mxm_mq;
req.base.conn = mca_spml_ikrit.mxm_peers[dst]->mxm_conn;
#if MXM_API < MXM_VERSION(2,0)
req.base.flags = MXM_REQ_FLAG_BLOCKING;
#else
req.flags = MXM_REQ_SEND_FLAG_BLOCKING;
#endif
req.base.completed_cb = NULL;
req.base.data_type = MXM_REQ_DATA_BUFFER;
req.base.data.buffer.ptr = buf == NULL ? dummy_buf : buf;
req.base.data.buffer.length = size == 0 ? sizeof(dummy_buf) : size;
req.base.data.buffer.memh = NULL;
mxm_req_send(&req);
mca_spml_irkit_req_wait(&req.base);
if (req.base.error != MXM_OK) {
return OSHMEM_ERROR;
}
return OSHMEM_SUCCESS;
}
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