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openmpi/ompi/mca/btl/gm/btl_gm.c
George Bosilca 6310ce955c The first patch related to the Active Message stuff. So far, here is what we have: 
- the registration array is now global instead of one by BTL.
- each framework have to declare the entries in the registration array reserved. Then
  it have to define the internal way of sharing (or not) these entries between all
  components. As an example, the PML will not share as there is only one active PML
  at any moment, while the BTLs will have to. The tag is 8 bits long, the first 3
  are reserved for the framework while the remaining 5 are use internally by each
  framework.
- The registration function is optional. If a BTL do not provide such function,
  nothing happens. However, in the case where such function is provided in the BTL
  structure, it will be called by the BML, when a tag is registered.

Now, it's time for the second step... Converting OB1 from a switch based PML to an
active message one.

This commit was SVN r17140.
2008-01-15 05:32:53 +00:00

971 строка
29 KiB
C
Исходник Ответственный История

/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 Myricom, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include <string.h>
#include "opal/util/output.h"
#include "opal/util/if.h"
#include "ompi/mca/pml/pml.h"
#include "ompi/mca/btl/btl.h"
#include "btl_gm.h"
#include "btl_gm_frag.h"
#include "btl_gm_proc.h"
#include "btl_gm_endpoint.h"
#include "ompi/datatype/convertor.h"
#include "ompi/datatype/datatype.h"
#include "ompi/mca/mpool/base/base.h"
#include "ompi/mca/mpool/mpool.h"
#include "ompi/proc/proc.h"
/**
* Non-locking versions of public interfaces.
*/
static int mca_btl_gm_send_nl(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_btl_base_descriptor_t* des,
mca_btl_base_tag_t tag);
static int mca_btl_gm_get_nl(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des);
static int mca_btl_gm_put_nl(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des);
mca_btl_gm_module_t mca_btl_gm_module = {
{
&mca_btl_gm_component.super,
0, /* max size of first fragment */
0, /* min send fragment size */
0, /* max send fragment size */
0, /* btl_rdma_pipeline_send_length */
0, /* btl_rdma_pipeline_frag_size */
0, /* btl_min_rdma_pipeline_size */
0, /* exclusivity */
0, /* latency */
0, /* bandwidth */
0, /* flags */
mca_btl_gm_add_procs,
mca_btl_gm_del_procs,
NULL,
mca_btl_gm_finalize,
mca_btl_gm_alloc,
mca_btl_gm_free,
mca_btl_gm_prepare_src,
mca_btl_gm_prepare_dst,
#if OMPI_ENABLE_MPI_THREADS || OMPI_ENABLE_PROGRESS_THREADS
mca_btl_gm_send,
mca_btl_gm_put,
mca_btl_gm_get,
#else
mca_btl_gm_send_nl,
mca_btl_gm_put_nl,
mca_btl_gm_get_nl,
#endif
mca_btl_base_dump,
NULL, /* mpool */
mca_btl_gm_register_error_cb,
mca_btl_gm_ft_event
}
};
/**
*
*/
int mca_btl_gm_add_procs(
struct mca_btl_base_module_t* btl,
size_t nprocs,
struct ompi_proc_t **ompi_procs,
struct mca_btl_base_endpoint_t** peers,
ompi_bitmap_t* reachable)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*)btl;
int i, rc;
for(i = 0; i < (int) nprocs; i++) {
struct ompi_proc_t* ompi_proc = ompi_procs[i];
mca_btl_gm_proc_t* gm_proc;
mca_btl_base_endpoint_t* gm_endpoint;
if(ompi_proc == ompi_proc_local())
continue;
if(NULL == (gm_proc = mca_btl_gm_proc_create(ompi_proc))) {
continue;
}
/*
* Check to make sure that the peer has at least as many interface
* addresses exported as we are trying to use. If not, then
* don't bind this PTL instance to the proc.
*/
OPAL_THREAD_LOCK(&gm_proc->proc_lock);
/* The btl_proc datastructure is shared by all GM PTL
* instances that are trying to reach this destination.
* Cache the peer instance on the btl_proc.
*/
gm_endpoint = OBJ_NEW(mca_btl_gm_endpoint_t);
if(NULL == gm_endpoint) {
OPAL_THREAD_UNLOCK(&gm_proc->proc_lock);
return OMPI_ERR_OUT_OF_RESOURCE;
}
gm_endpoint->endpoint_btl = gm_btl;
rc = mca_btl_gm_proc_insert(gm_proc, gm_endpoint);
if(rc != OMPI_SUCCESS) {
OBJ_RELEASE(gm_endpoint);
OPAL_THREAD_UNLOCK(&gm_proc->proc_lock);
continue;
}
ompi_bitmap_set_bit(reachable, i);
OPAL_THREAD_UNLOCK(&gm_proc->proc_lock);
peers[i] = gm_endpoint;
}
return OMPI_SUCCESS;
}
int mca_btl_gm_del_procs(struct mca_btl_base_module_t* btl,
size_t nprocs,
struct ompi_proc_t **procs,
struct mca_btl_base_endpoint_t ** peers)
{
/* TODO */
return OMPI_SUCCESS;
}
/*
*Register callback function for error handling..
*/
int mca_btl_gm_register_error_cb(
struct mca_btl_base_module_t* btl,
mca_btl_base_module_error_cb_fn_t cbfunc)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
gm_btl->error_cb = cbfunc; /* stash for later */
return OMPI_SUCCESS;
}
/**
* Allocate a segment.
*
* @param btl (IN) BTL module
* @param size (IN) Request segment size.
*/
mca_btl_base_descriptor_t* mca_btl_gm_alloc(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
uint8_t order,
size_t size,
uint32_t flags)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag;
int rc;
if(size <= btl->btl_eager_limit) {
MCA_BTL_GM_FRAG_ALLOC_EAGER(gm_btl, frag, rc);
if(NULL == frag) {
return NULL;
}
frag->type=MCA_BTL_GM_EAGER;
frag->segment.seg_len = size;
} else if(size <= btl->btl_max_send_size) {
MCA_BTL_GM_FRAG_ALLOC_MAX(gm_btl, frag, rc);
if(NULL == frag) {
return NULL;
}
frag->type=MCA_BTL_GM_SEND;
frag->segment.seg_len = size;
} else {
return NULL;
}
frag->base.des_src = &frag->segment;
frag->base.des_src_cnt = 1;
frag->base.des_dst = NULL;
frag->base.des_dst_cnt = 0;
frag->base.des_flags = 0;
frag->base.order = MCA_BTL_NO_ORDER;
return &frag->base;
}
/**
* Return a segment
*/
int mca_btl_gm_free( struct mca_btl_base_module_t* btl,
mca_btl_base_descriptor_t* des )
{
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)des;
if( NULL != frag->registration ) {
btl->btl_mpool->mpool_deregister(btl->btl_mpool, (mca_mpool_base_registration_t*) frag->registration);
frag->registration = NULL;
}
MCA_BTL_GM_FRAG_RETURN(btl, frag);
return OMPI_SUCCESS;
}
/**
* Pack data and return a descriptor that can be
* used for send/put.
*
* @param btl (IN) BTL module
* @param peer (IN) BTL peer addressing
*/
mca_btl_base_descriptor_t* mca_btl_gm_prepare_src(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_mpool_base_registration_t* registration,
struct ompi_convertor_t* convertor,
uint8_t order,
size_t reserve,
size_t* size,
uint32_t flags
)
{
mca_btl_gm_frag_t *frag = NULL;
struct iovec iov;
uint32_t iov_count = 1;
size_t max_data = *size;
int rc;
#if (OMPI_MCA_BTL_GM_HAVE_RDMA_GET || OMPI_MCA_BTL_GM_HAVE_RDMA_PUT)
if(ompi_convertor_need_buffers(convertor) == false && 0 == reserve) {
if(registration != NULL || max_data > btl->btl_max_send_size) {
MCA_BTL_GM_FRAG_ALLOC_USER(btl, frag, rc);
if(NULL == frag) {
return NULL;
}
/*
* just assign it something..
* we will assign the real value in put/get
*/
frag->type = MCA_BTL_GM_PUT;
iov.iov_len = max_data;
iov.iov_base = NULL;
ompi_convertor_pack(convertor, &iov, &iov_count, &max_data);
*size = max_data;
if(NULL == registration) {
rc = btl->btl_mpool->mpool_register(btl->btl_mpool,
iov.iov_base, max_data, 0, &registration);
if(OMPI_SUCCESS != rc || NULL == registration) {
MCA_BTL_GM_FRAG_RETURN(btl, frag);
return NULL;
}
/* keep track of the registration we did */
frag->registration = registration;
}
frag->segment.seg_len = max_data;
frag->segment.seg_addr.pval = iov.iov_base;
frag->base.des_src = &frag->segment;
frag->base.des_src_cnt = 1;
frag->base.des_dst = NULL;
frag->base.des_dst_cnt = 0;
frag->base.des_flags = 0;
frag->base.order = MCA_BTL_NO_ORDER;
return &frag->base;
}
}
#endif
if (max_data + reserve <= btl->btl_eager_limit) {
/* the data is small enough to fit in the eager frag and
* memory is not prepinned */
MCA_BTL_GM_FRAG_ALLOC_EAGER(btl, frag, rc);
if(frag != NULL) {
frag->type = MCA_BTL_GM_EAGER;
}
}
if(NULL == frag) {
/* the data doesn't fit into eager frag or eger frag is
* not available */
MCA_BTL_GM_FRAG_ALLOC_MAX(btl, frag, rc);
if(NULL == frag) {
return NULL;
}
frag->type = MCA_BTL_GM_SEND;
if(max_data + reserve > btl->btl_max_send_size) {
max_data = btl->btl_max_send_size - reserve;
}
}
iov.iov_len = max_data;
iov.iov_base = (unsigned char*) frag->segment.seg_addr.pval + reserve;
rc = ompi_convertor_pack(convertor, &iov, &iov_count, &max_data);
if(rc < 0) {
MCA_BTL_GM_FRAG_RETURN(btl, frag);
return NULL;
}
*size = max_data;
frag->segment.seg_len = max_data + reserve;
frag->base.des_src = &frag->segment;
frag->base.des_src_cnt = 1;
frag->base.des_dst = NULL;
frag->base.des_dst_cnt = 0;
frag->base.des_flags = 0;
frag->base.order = MCA_BTL_NO_ORDER;
return &frag->base;
}
/**
* Prepare a descriptor for send/rdma using the supplied
* convertor. If the convertor references data that is contigous,
* the descriptor may simply point to the user buffer. Otherwise,
* this routine is responsible for allocating buffer space and
* packing if required.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL peer addressing
* @param convertor (IN) Data type convertor
* @param reserve (IN) Additional bytes requested by upper layer to precede user data
* @param size (IN/OUT) Number of bytes to prepare (IN), number of bytes actually prepared (OUT)
*/
mca_btl_base_descriptor_t* mca_btl_gm_prepare_dst(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_mpool_base_registration_t* registration,
struct ompi_convertor_t* convertor,
uint8_t order,
size_t reserve,
size_t* size,
uint32_t flags)
{
#if (OMPI_MCA_BTL_GM_HAVE_RDMA_GET || OMPI_MCA_BTL_GM_HAVE_RDMA_PUT)
mca_btl_gm_frag_t* frag;
mca_mpool_base_module_t* mpool = btl->btl_mpool;
int rc;
MCA_BTL_GM_FRAG_ALLOC_USER(btl, frag, rc);
if(NULL == frag) {
return NULL;
}
/*
* just assign it something..
* we will assign the real value in put/get
*/
frag->type = MCA_BTL_GM_PUT;
/*
* we don't know that this is for a PUT,
* but it doesn't matter.. they belong
* on the same list eventually anyway
*/
frag->type = MCA_BTL_GM_PUT;
frag->segment.seg_len = *size;
ompi_convertor_get_current_pointer( convertor, (void**)&(frag->segment.seg_addr.pval) );
frag->base.des_src = NULL;
frag->base.des_src_cnt = 0;
frag->base.des_dst = &frag->segment;
frag->base.des_dst_cnt = 1;
frag->base.des_flags = 0;
frag->base.order = MCA_BTL_NO_ORDER;
if(NULL == registration) {
rc = mpool->mpool_register( mpool,
frag->segment.seg_addr.pval,
frag->segment.seg_len,
0,
&registration );
if(rc != OMPI_SUCCESS) {
MCA_BTL_GM_FRAG_RETURN(btl,frag);
return NULL;
}
frag->registration = registration;
}
return &frag->base;
#else
return NULL;
#endif
}
/**
*
*/
static void mca_btl_gm_drop_callback( struct gm_port* port, void* context, gm_status_t status )
{
mca_btl_gm_module_t* btl = (mca_btl_gm_module_t*)context;
OPAL_THREAD_ADD32( &btl->gm_num_send_tokens, 1 );
}
/**
* Callback on send completion and/or error.
* Called with mca_btl_gm_component.gm_lock held.
*/
static void mca_btl_gm_send_callback( struct gm_port* port, void* context, gm_status_t status )
{
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)context;
mca_btl_gm_module_t* btl = frag->btl;
switch(status) {
case GM_TRY_AGAIN:
case GM_SEND_TIMED_OUT:
#if GM_API_VERSION > 0x200
case GM_TIMED_OUT:
#endif
/* drop all sends to this destination port */
gm_drop_sends(
btl->port,
(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY) ? GM_HIGH_PRIORITY : GM_LOW_PRIORITY,
frag->endpoint->endpoint_addr.node_id,
frag->endpoint->endpoint_addr.port_id,
mca_btl_gm_drop_callback,
btl
);
/* retry the failed fragment */
mca_btl_gm_send_nl(&btl->super, frag->endpoint, &frag->base, frag->hdr->tag);
break;
case GM_SEND_DROPPED:
/* release the send token */
OPAL_THREAD_ADD32(&btl->gm_num_send_tokens, 1);
/* retry the dropped fragment */
mca_btl_gm_send_nl(&btl->super, frag->endpoint, &frag->base, frag->hdr->tag);
break;
case GM_SUCCESS:
/* call the completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
/* return the send token and deque pending fragments */
MCA_BTL_GM_RETURN_TOKEN(btl);
break;
default:
/* error condition can't deal with */
opal_output(0, "[%s:%d] send completed with unhandled gm error %d\n", __FILE__,__LINE__,status);
/* release the send token */
OPAL_THREAD_ADD32( &btl->gm_num_send_tokens, 1 );
/* call the completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_ERROR);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
break;
}
}
/**
* Initiate an asynchronous send. Do NOT acquire gm lock, must already be held,
* or in an unthreaded environment.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transfered
* @param tag (IN) The tag value used to notify the peer.
*/
static int mca_btl_gm_send_nl(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_btl_base_descriptor_t* des,
mca_btl_base_tag_t tag)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->hdr->tag = tag;
/* queue the descriptor if there are no send tokens */
MCA_BTL_GM_ACQUIRE_TOKEN_NL(gm_btl, frag);
/* post the send descriptor */
if(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY &&
frag->size == mca_btl_gm_component.gm_eager_frag_size) {
gm_send_with_callback( gm_btl->port,
frag->hdr,
mca_btl_gm_component.gm_eager_frag_size,
frag->segment.seg_len + sizeof(mca_btl_base_header_t),
GM_HIGH_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_send_callback,
frag );
} else {
gm_send_with_callback( gm_btl->port,
frag->hdr,
mca_btl_gm_component.gm_max_frag_size,
frag->segment.seg_len + sizeof(mca_btl_base_header_t),
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_send_callback,
frag );
}
if(opal_list_get_size(&gm_btl->gm_repost)) {
mca_btl_gm_frag_t* frag;
while(NULL != (frag = (mca_btl_gm_frag_t*)opal_list_remove_first(&gm_btl->gm_repost))) {
gm_provide_receive_buffer(gm_btl->port, frag->hdr, frag->size, frag->priority);
}
}
return OMPI_SUCCESS;
}
/**
* Initiate an asynchronous send.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transfered
* @param tag (IN) The tag value used to notify the peer.
*/
int mca_btl_gm_send(
struct mca_btl_base_module_t* btl,
struct mca_btl_base_endpoint_t* endpoint,
struct mca_btl_base_descriptor_t* des,
mca_btl_base_tag_t tag)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->hdr->tag = tag;
/* queue the descriptor if there are no send tokens */
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
MCA_BTL_GM_ACQUIRE_TOKEN(gm_btl, frag);
/* post the send descriptor */
if(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY &&
frag->size == mca_btl_gm_component.gm_eager_frag_size) {
gm_send_with_callback( gm_btl->port,
frag->hdr,
mca_btl_gm_component.gm_eager_frag_size,
frag->segment.seg_len + sizeof(mca_btl_base_header_t),
GM_HIGH_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_send_callback,
frag );
} else {
gm_send_with_callback( gm_btl->port,
frag->hdr,
mca_btl_gm_component.gm_max_frag_size,
frag->segment.seg_len + sizeof(mca_btl_base_header_t),
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_send_callback,
frag );
}
if(opal_list_get_size(&gm_btl->gm_repost)) {
mca_btl_gm_frag_t* frag;
while(NULL != (frag = (mca_btl_gm_frag_t*)opal_list_remove_first(&gm_btl->gm_repost))) {
gm_provide_receive_buffer(gm_btl->port, frag->hdr, frag->size, frag->priority);
}
}
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
return OMPI_SUCCESS;
}
/**
* Callback on put completion and/or error.
* Called with mca_btl_gm_component.gm_lock held.
*/
static void mca_btl_gm_put_callback( struct gm_port* port, void* context, gm_status_t status )
{
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)context;
mca_btl_gm_module_t* btl = frag->btl;
/* call the completion callback */
switch(status) {
case GM_TRY_AGAIN:
case GM_SEND_TIMED_OUT:
#if GM_API_VERSION > 0x200
case GM_TIMED_OUT:
#endif
/* drop all sends to this destination port */
gm_drop_sends(
btl->port,
(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY) ? GM_HIGH_PRIORITY : GM_LOW_PRIORITY,
frag->endpoint->endpoint_addr.node_id,
frag->endpoint->endpoint_addr.port_id,
mca_btl_gm_drop_callback,
btl
);
/* retry the failed fragment */
mca_btl_gm_put_nl(&btl->super, frag->endpoint, &frag->base);
break;
case GM_SEND_DROPPED:
/* release the send token */
OPAL_THREAD_ADD32(&btl->gm_num_send_tokens, 1);
/* retry the dropped fragment */
mca_btl_gm_put_nl(&btl->super, frag->endpoint, &frag->base);
break;
case GM_SUCCESS:
/* call completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
/* return the send token and deque pending fragments */
MCA_BTL_GM_RETURN_TOKEN(btl);
break;
default:
/* error condition can't deal with */
opal_output(0, "[%s:%d] gm_put operation failed with status %d\n", __FILE__, __LINE__, status);
/* release the send token */
OPAL_THREAD_ADD32( &btl->gm_num_send_tokens, 1 );
/* call the completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_ERROR);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
break;
}
}
/**
* Initiate an asynchronous put. Do not acquire lock.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*/
static int mca_btl_gm_put_nl(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des)
{
#if OMPI_MCA_BTL_GM_HAVE_RDMA_PUT
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*) des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->type = MCA_BTL_GM_PUT;
/* queue the descriptor if there are no send tokens */
MCA_BTL_GM_ACQUIRE_TOKEN_NL(gm_btl, frag);
/* post the put descriptor */
gm_put(gm_btl->port,
des->des_src->seg_addr.pval,
des->des_dst->seg_addr.lval,
des->des_src->seg_len,
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_put_callback,
frag);
return OMPI_SUCCESS;
#else
return OMPI_ERR_NOT_IMPLEMENTED;
#endif
}
/**
* Initiate an asynchronous put.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*/
int mca_btl_gm_put(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des)
{
#if OMPI_MCA_BTL_GM_HAVE_RDMA_PUT
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*) des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->type = MCA_BTL_GM_PUT;
/* queue the descriptor if there are no send tokens */
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
MCA_BTL_GM_ACQUIRE_TOKEN(gm_btl, frag);
/* post the put descriptor */
gm_put(gm_btl->port,
des->des_src->seg_addr.pval,
des->des_dst->seg_addr.lval,
des->des_src->seg_len,
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_put_callback,
frag);
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
return OMPI_SUCCESS;
#else
return OMPI_ERR_NOT_IMPLEMENTED;
#endif
}
/**
* Callback on get completion and/or error.
* Called with mca_btl_gm_component.gm_lock held.
*/
static void mca_btl_gm_get_callback( struct gm_port* port, void* context, gm_status_t status )
{
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*)context;
mca_btl_gm_module_t* btl = frag->btl;
/* call the completion callback */
switch(status) {
case GM_TRY_AGAIN:
case GM_SEND_TIMED_OUT:
#if GM_API_VERSION > 0x200
case GM_TIMED_OUT:
#endif
/* drop all sends to this destination port */
gm_drop_sends(
btl->port,
(frag->base.des_flags & MCA_BTL_DES_FLAGS_PRIORITY) ? GM_HIGH_PRIORITY : GM_LOW_PRIORITY,
frag->endpoint->endpoint_addr.node_id,
frag->endpoint->endpoint_addr.port_id,
mca_btl_gm_drop_callback,
btl
);
/* retry the failed fragment */
mca_btl_gm_get_nl(&btl->super, frag->endpoint, &frag->base);
break;
case GM_SEND_DROPPED:
/* release the send token */
OPAL_THREAD_ADD32(&btl->gm_num_send_tokens, 1);
/* retry the dropped fragment */
mca_btl_gm_get_nl(&btl->super, frag->endpoint, &frag->base);
break;
case GM_SUCCESS:
/* call completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_SUCCESS);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
/* return the send token and deque pending fragments */
MCA_BTL_GM_RETURN_TOKEN(btl);
break;
default:
/* error condition can't deal with */
opal_output(0, "[%s:%d] gm_get operation failed with status %d\n", __FILE__, __LINE__, status);
/* release the send token */
OPAL_THREAD_ADD32( &btl->gm_num_send_tokens, 1 );
/* call the completion callback */
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
frag->base.des_cbfunc(&btl->super, frag->endpoint, &frag->base, OMPI_ERROR);
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
break;
}
}
/**
* Initiate an asynchronous get. No locking.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*
*/
static int mca_btl_gm_get_nl(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des)
{
#if OMPI_MCA_BTL_GM_HAVE_RDMA_GET
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*) des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->type = MCA_BTL_GM_GET;
/* queue the descriptor if there are no send tokens */
MCA_BTL_GM_ACQUIRE_TOKEN_NL(gm_btl, frag);
/* post get put descriptor */
gm_get(gm_btl->port,
des->des_dst->seg_addr.lval,
des->des_src->seg_addr.pval,
des->des_src->seg_len,
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_get_callback,
frag);
return OMPI_SUCCESS;
#else
return OMPI_ERR_NOT_IMPLEMENTED;
#endif
}
/**
* Initiate an asynchronous get.
*
* @param btl (IN) BTL module
* @param endpoint (IN) BTL addressing information
* @param descriptor (IN) Description of the data to be transferred
*
*/
int mca_btl_gm_get(
mca_btl_base_module_t* btl,
mca_btl_base_endpoint_t* endpoint,
mca_btl_base_descriptor_t* des)
{
#if OMPI_MCA_BTL_GM_HAVE_RDMA_GET
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
mca_btl_gm_frag_t* frag = (mca_btl_gm_frag_t*) des;
frag->btl = gm_btl;
frag->endpoint = endpoint;
frag->type = MCA_BTL_GM_GET;
/* queue the descriptor if there are no send tokens */
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
MCA_BTL_GM_ACQUIRE_TOKEN(gm_btl, frag);
/* post get put descriptor */
gm_get(gm_btl->port,
des->des_dst->seg_addr.lval,
des->des_src->seg_addr.pval,
des->des_src->seg_len,
GM_LOW_PRIORITY,
endpoint->endpoint_addr.node_id,
endpoint->endpoint_addr.port_id,
mca_btl_gm_get_callback,
frag);
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
return OMPI_SUCCESS;
#else
return OMPI_ERR_NOT_IMPLEMENTED;
#endif
}
/*
* Cleanup/release module resources.
*/
#if OMPI_ENABLE_PROGRESS_THREADS
static void mca_btl_gm_alarm(void* arg) {}
#endif
int mca_btl_gm_finalize(struct mca_btl_base_module_t* btl)
{
mca_btl_gm_module_t* gm_btl = (mca_btl_gm_module_t*) btl;
#if OMPI_ENABLE_PROGRESS_THREADS
gm_alarm_t alarm;
OPAL_THREAD_LOCK(&mca_btl_gm_component.gm_lock);
gm_btl->gm_progress = false;
gm_initialize_alarm(&alarm);
gm_set_alarm(gm_btl->port, &alarm, 10, mca_btl_gm_alarm, NULL);
OPAL_THREAD_UNLOCK(&mca_btl_gm_component.gm_lock);
opal_thread_join(&gm_btl->gm_thread, NULL);
#endif
OBJ_DESTRUCT(&gm_btl->gm_frag_eager);
OBJ_DESTRUCT(&gm_btl->gm_frag_max);
OBJ_DESTRUCT(&gm_btl->gm_frag_user);
gm_close(gm_btl->port);
free(gm_btl);
return OMPI_SUCCESS;
}
int mca_btl_gm_ft_event(int state) {
if(OPAL_CRS_CHECKPOINT == state) {
;
}
else if(OPAL_CRS_CONTINUE == state) {
;
}
else if(OPAL_CRS_RESTART == state) {
;
}
else if(OPAL_CRS_TERM == state ) {
;
}
else {
;
}
return OMPI_SUCCESS;
}
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