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6310ce955c
openmpi/ompi/mca/btl/mx/btl_mx_component.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

654 строки
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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) 2004-2007 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) 2007 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "opal/prefetch.h"
#include "opal/util/opal_environ.h"
#include "opal/util/if.h"
#include "opal/util/argv.h"
#include "ompi/constants.h"
#include "opal/mca/base/mca_base_param.h"
#include "orte/mca/errmgr/errmgr.h"
#include "ompi/runtime/ompi_module_exchange.h"
#include "ompi/mca/btl/base/btl_base_error.h"
#include "ompi/mca/common/mx/common_mx.h"
#include "btl_mx.h"
#include "btl_mx_frag.h"
#include "btl_mx_endpoint.h"
#if MX_HAVE_MAPPER_STATE
#include "mx_io.h"
#include "mx_internals/mx__fops.h"
#include "mx_internals/mx__driver_interface.h"
#endif /* MX_HAVE_MAPPER_STATE */
mca_btl_mx_component_t mca_btl_mx_component = {
{
/* First, the mca_base_component_t struct containing meta information
about the component itself */
{
/* Indicate that we are a pml v1.0.0 component (which also implies a
specific MCA version) */
MCA_BTL_BASE_VERSION_1_0_1,
"mx", /* MCA component name */
OMPI_MAJOR_VERSION, /* MCA component major version */
OMPI_MINOR_VERSION, /* MCA component minor version */
OMPI_RELEASE_VERSION, /* MCA component release version */
mca_btl_mx_component_open, /* component open */
mca_btl_mx_component_close /* component close */
},
/* Next the MCA v1.0.0 component meta data */
{
/* The component is not checkpoint ready */
MCA_BASE_METADATA_PARAM_NONE
},
mca_btl_mx_component_init,
mca_btl_mx_component_progress,
}
};
/*
* Called by MCA framework to open the component, registers
* component parameters.
*/
int mca_btl_mx_component_open(void)
{
/* initialize state */
mca_btl_mx_component.mx_num_btls = 0;
mca_btl_mx_component.mx_btls = NULL;
mca_btl_mx_component.mx_use_unexpected = 0;
/* initialize objects */
OBJ_CONSTRUCT(&mca_btl_mx_component.mx_procs, opal_list_t);
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "max_btls",
"Maximum number of accepted Myrinet cards",
false, false, 1, &mca_btl_mx_component.mx_max_btls );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "timeout",
"Timeout for connections",
false, false, MX_INFINITE, &mca_btl_mx_component.mx_timeout );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "retries",
"Number of retries for each new connection before considering the peer as unreacheable",
false, false, 20, &mca_btl_mx_component.mx_connection_retries );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "filter",
"Unique ID for the application (used to connect to the peers)",
false, false, 0xdeadbeef, &mca_btl_mx_component.mx_filter );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "self",
"Enable the MX support for self communications",
false, false, 0, &mca_btl_mx_component.mx_support_self );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "shared_mem",
"Enable the MX support for shared memory",
false, false, 0, &mca_btl_mx_component.mx_support_sharedmem );
#ifdef HAVE_MX_REGISTER_UNEXP_HANDLER
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "register_unexp",
"Enable the MX support for the unexpected request handler (Open MPI matching)",
false, false, 0, &mca_btl_mx_component.mx_use_unexpected );
#endif /* HAVE_MX_REGISTER_UNEXP_HANDLER */
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "free_list_num",
"Number of allocated default request",
false, false, 8, &mca_btl_mx_component.mx_free_list_num );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "free_list_inc",
"Number of request we allocate each time we miss some",
false, false, 32, &mca_btl_mx_component.mx_free_list_inc );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "free_list_max",
"Maximum number of request this device is allowed to allocate",
false, false, 128, &mca_btl_mx_component.mx_free_list_max );
/* The ompi_free_list has a problem if the (max - num) is not
* divisible by the increament. So make sure it is ...
*/
if( (mca_btl_mx_component.mx_free_list_max - mca_btl_mx_component.mx_free_list_num) %
mca_btl_mx_component.mx_free_list_inc ) {
int overhead = (mca_btl_mx_component.mx_free_list_max - mca_btl_mx_component.mx_free_list_num) %
mca_btl_mx_component.mx_free_list_inc;
mca_btl_mx_component.mx_free_list_max -= overhead;
}
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "max_posted_recv",
"Number of received posted in advance. Increasing this number for"
" communication bound application can lead to visible improvement"
" in performances",
false, false, 16, &mca_btl_mx_component.mx_max_posted_recv );
mca_base_param_reg_string( (mca_base_component_t*)&mca_btl_mx_component, "if_include",
"Myrinet card to use (last 6 digits from the mapper MAC)",
false, false, NULL, &mca_btl_mx_component.mx_if_include );
mca_base_param_reg_string( (mca_base_component_t*)&mca_btl_mx_component, "if_exclude",
"Myrinet card to avoid (last 6 digits from the mapper MAC)",
false, false, NULL, &mca_btl_mx_component.mx_if_exclude );
mca_btl_mx_module.super.btl_exclusivity = MCA_BTL_EXCLUSIVITY_DEFAULT;
mca_btl_mx_module.super.btl_eager_limit = 4096;
mca_btl_mx_module.super.btl_rndv_eager_limit = 4096;
mca_btl_mx_module.super.btl_max_send_size = 64*1024;
mca_btl_mx_module.super.btl_rdma_pipeline_send_length = 256*1024;
mca_btl_mx_module.super.btl_rdma_pipeline_frag_size = 8*1024*1024;
mca_btl_mx_module.super.btl_min_rdma_pipeline_size = 0;
mca_btl_mx_module.super.btl_flags =
MCA_BTL_FLAGS_SEND_INPLACE |
MCA_BTL_FLAGS_PUT |
MCA_BTL_FLAGS_SEND |
MCA_BTL_FLAGS_RDMA_MATCHED;
mca_btl_mx_module.super.btl_bandwidth = 2000;
mca_btl_mx_module.super.btl_latency = 5;
mca_btl_base_param_register(&mca_btl_mx_component.super.btl_version,
&mca_btl_mx_module.super);
return OMPI_SUCCESS;
}
/*
* component cleanup - sanity checking of queue lengths
*/
int mca_btl_mx_component_close(void)
{
if( NULL == mca_btl_mx_component.mx_btls )
return OMPI_SUCCESS;
if(OMPI_SUCCESS != ompi_common_mx_finalize()) {
return OMPI_ERROR;
}
/* release resources */
OBJ_DESTRUCT(&mca_btl_mx_component.mx_send_eager_frags);
OBJ_DESTRUCT(&mca_btl_mx_component.mx_send_user_frags);
OBJ_DESTRUCT(&mca_btl_mx_component.mx_procs);
OBJ_DESTRUCT(&mca_btl_mx_component.mx_lock);
if( NULL != mca_btl_mx_component.mx_if_include ) {
free( mca_btl_mx_component.mx_if_include );
mca_btl_mx_component.mx_if_include = NULL;
}
if( NULL != mca_btl_mx_component.mx_if_exclude ) {
free( mca_btl_mx_component.mx_if_exclude );
mca_btl_mx_component.mx_if_exclude = NULL;
}
return OMPI_SUCCESS;
}
#ifdef HAVE_MX_REGISTER_UNEXP_HANDLER
/**
* In order to avoid useless memcpy, the unexpected handler will be called
* by the MX library before doing any match in the MX internal queues. Here
* we have a chance to match the message using our own matching logic from
* the PML. If the match is realized, we will return MX_RECV_FINISHED (the
* MX request will vanish in the MX library). If the match do not succeed
* MX_RECV_CONTINUE have to be returned and the MX library will do the
* match itself.
*/
static mx_unexp_handler_action_t
mca_btl_mx_unexpected_handler( void *context, mx_endpoint_addr_t source,
uint64_t match_value, uint32_t length,
void * data_if_available )
{
mca_btl_mx_module_t* mx_btl = (mca_btl_mx_module_t*)context;
mca_btl_active_message_callback_t* reg;
mca_btl_base_tag_t tag;
mca_btl_base_descriptor_t descriptor;
mca_btl_base_segment_t segment;
/*opal_output( 0, "Get unexpected handler context %p source %lld match_value %lld\n"
"\tlength %d data %p\n", context, source.stuff[0], match_value, length,
data_if_available );*/
if( match_value > MCA_BTL_TAG_MAX )
return MX_RECV_CONTINUE;
tag = match_value & 0xff;
assert( tag < 16 );
reg = mca_btl_base_active_message_trigger + tag;
segment.seg_addr.pval = data_if_available;
segment.seg_len = length;
descriptor.des_dst = &segment;
descriptor.des_dst_cnt = 1;
reg->cbfunc( &(mx_btl->super), tag, &descriptor, reg->cbdata );
return MX_RECV_FINISHED;
}
#endif /* HAVE_MX_REGISTER_UNEXP_HANDLER */
/*
* Create and intialize an MX PTL module, where each module
* represents a specific NIC.
*/
static mca_btl_mx_module_t* mca_btl_mx_create(uint64_t addr)
{
mca_btl_mx_module_t* mx_btl;
mx_return_t status;
uint32_t nic_id, mx_unique_network_id = 0;
char mapper_mac[7], *where;
status = mx_nic_id_to_board_number( addr, &nic_id );
if( MX_SUCCESS != status ) {
return NULL;
}
#if MX_HAVE_MAPPER_STATE
{
mx_return_t ret;
mx_endpt_handle_t endp_handle;
mx_mapper_state_t ms;
ret = mx_open_board( nic_id, &endp_handle );
if( MX_SUCCESS != ret ) {
opal_output( 0, "Unable to open board %d: %s\n", nic_id, mx_strerror(ret) );
return NULL;
}
ms.board_number = nic_id;
ms.iport = 0;
ret = mx__get_mapper_state( endp_handle, &ms );
if( MX_SUCCESS != ret ) {
opal_output( 0, "get_mapper_state failed for board %d: %s\n",
nic_id, mx_strerror(ret) );
return NULL;
}
/* Keep the first 4 bytes for the network speed */
mx_unique_network_id = ((ms.mapper_mac[3] << 16) +
(ms.mapper_mac[4] << 8) +
(ms.mapper_mac[5]));
}
#endif /* MX_HAVE_MAPPER_STATE */
/* Try to figure out if we are allowed to use this network */
snprintf( mapper_mac, 7, "%6x", mx_unique_network_id );
if( (NULL != mca_btl_mx_component.mx_if_exclude) &&
(NULL != (where = strstr(mca_btl_mx_component.mx_if_exclude, mapper_mac))) ) {
/*opal_output( 0, "MX network %d connected to the mapper %s has been excluded\n",
nic_id, mapper_mac );*/
return NULL;
}
else if( (NULL != mca_btl_mx_component.mx_if_include) &&
(NULL == (where = strstr(mca_btl_mx_component.mx_if_include, mapper_mac))) ) {
/*opal_output( 0, "MX network %d connected to the mapper %s has not been included\n",
nic_id, mapper_mac );*/
return NULL;
}
mx_btl = malloc(sizeof(mca_btl_mx_module_t));
if( NULL == mx_btl ) return NULL;
/* copy over default settings */
memcpy( mx_btl, &mca_btl_mx_module, sizeof(mca_btl_mx_module_t) );
OBJ_CONSTRUCT( &mx_btl->mx_peers, opal_list_t );
OBJ_CONSTRUCT( &mx_btl->mx_lock, opal_mutex_t );
/* open local endpoint */
status = mx_open_endpoint( nic_id, MX_ANY_ENDPOINT,
mca_btl_mx_component.mx_filter,
NULL, 0, &mx_btl->mx_endpoint);
if(status != MX_SUCCESS) {
opal_output( 0, "mca_btl_mx_init: mx_open_endpoint() failed with status %d (%s)\n",
status, mx_strerror(status) );
mx_btl->mx_endpoint = NULL;
mca_btl_mx_finalize( &mx_btl->super );
return NULL;
}
mx_btl->mx_unique_network_id = mx_unique_network_id;
mx_btl->super.btl_bandwidth = 1000; /* whatever */
mx_btl->super.btl_latency = 10;
#if defined(MX_HAS_NET_TYPE)
{
int value;
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_LINE_SPEED,
&nic_id, sizeof(nic_id),
&value, sizeof(int))) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_LINE_SPEED) failed with status %d (%s)\n",
status, mx_strerror(status) );
} else {
if( MX_SPEED_2G == value ) {
mx_btl->mx_unique_network_id |= 0xaa000000;
mx_btl->super.btl_bandwidth = 2000;
mx_btl->super.btl_latency = 5;
} else if( MX_SPEED_10G == value ) {
mx_btl->mx_unique_network_id |= 0xbb000000;
mx_btl->super.btl_bandwidth = 10000;
mx_btl->super.btl_latency = 3;
} else {
mx_btl->mx_unique_network_id |= 0xcc000000;
}
}
}
#endif /* defined(MX_HAS_NET_TYPE) */
#if 0
{
int counters, board, i, value, *counters_value;
char text[MX_MAX_STR_LEN];
char *counters_name;
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_PIO_SEND_MAX, NULL, 0,
&value, sizeof(int))) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_PIO_SEND_MAX) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
printf( "MX_PIO_SEND_MAX = %d\n", value );
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_COPY_SEND_MAX, NULL, 0,
&value, sizeof(int))) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_COPY_SEND_MAX) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
printf( "MX_COPY_SEND_MAX = %d\n", value );
board = 0;
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_PRODUCT_CODE, &board, sizeof(int),
text, MX_MAX_STR_LEN)) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_PRODUCT_CODE) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
printf( "product code %s\n", text );
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_COUNTERS_COUNT, &board, sizeof(int),
&counters, sizeof(int))) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_COUNTERS_COUNT) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
printf( "counters = %d\n", counters );
counters_name = (char*)malloc( counters * MX_MAX_STR_LEN );
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_COUNTERS_LABELS, &board, sizeof(int),
counters_name, counters * MX_MAX_STR_LEN)) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_COUNTERS_LABELS) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
counters_value = (int*)malloc( counters * sizeof(int) );
if( (status = mx_get_info( mx_btl->mx_endpoint, MX_COUNTERS_VALUES, &board, sizeof(int),
counters_value, counters * sizeof(int))) != MX_SUCCESS ) {
opal_output( 0, "mx_get_info(MX_COUNTERS_VALUES) failed with status %d (%s)\n",
status, mx_strerror(status) );
}
for( i = 0; i < counters; i++ )
printf( "%d -> %s = %d\n", i, counters_name + i * MX_MAX_STR_LEN,
counters_value[i] );
free( counters_name );
free( counters_value );
}
#endif
/* query the endpoint address */
if((status = mx_get_endpoint_addr( mx_btl->mx_endpoint,
&mx_btl->mx_endpoint_addr)) != MX_SUCCESS) {
opal_output( 0, "mca_btl_mx_init: mx_get_endpoint_addr() failed with status %d (%s)\n",
status, mx_strerror(status) );
mca_btl_mx_finalize( &mx_btl->super );
return NULL;
}
#ifdef HAVE_MX_REGISTER_UNEXP_HANDLER
if( mca_btl_mx_component.mx_use_unexpected ) {
status = mx_register_unexp_handler( mx_btl->mx_endpoint, mca_btl_mx_unexpected_handler,
(void*)mx_btl );
if( MX_SUCCESS != status ) {
opal_output( 0, "mca_btl_mx_init: mx_register_unexp_handler() failed with status %d (%s)\n",
status, mx_strerror(status) );
mca_btl_mx_finalize( &mx_btl->super );
return NULL;
}
}
#endif /* HAVE_MX_REGISTER_UNEXP_HANDLER */
return mx_btl;
}
/*
* MX component initialization:
* - check if MX can be initialized.
* - and construct all static objects.
*/
mca_btl_base_module_t** mca_btl_mx_component_init(int *num_btl_modules,
bool enable_progress_threads,
bool enable_mpi_threads)
{
mca_btl_base_module_t** btls;
mx_return_t status;
uint32_t size, count;
int32_t i;
uint64_t *nic_addrs;
mca_btl_mx_addr_t *mx_addrs;
*num_btl_modules = 0;
if (enable_progress_threads) {
opal_output( 0, "mca_btl_mx_component_init: progress threads requested but not supported");
ompi_modex_send(&mca_btl_mx_component.super.btl_version,
NULL, 0);
return NULL;
}
/* set the MX error handle to always return. This function is the only MX function
* allowed to be called before mx_init in order to make sure that if the MX is not
* up and running the MX library does not exit the application.
*/
mx_set_error_handler(MX_ERRORS_RETURN);
if( 0 == mca_btl_mx_component.mx_support_sharedmem )
opal_setenv( "MX_DISABLE_SHMEM", "1", true, &environ );
if( 0 == mca_btl_mx_component.mx_support_self )
opal_setenv( "MX_DISABLE_SELF", "1", true, &environ );
/* Force the long pipeline (up to 4Kb fragments) */
opal_setenv( "MX_PIPELINE_LOG", "0", true, &environ );
/* First check if MX is available ... */
if( OMPI_SUCCESS != ompi_common_mx_initialize() ) {
ompi_modex_send(&mca_btl_mx_component.super.btl_version,
NULL, 0);
return NULL;
}
/* initialize objects */
OBJ_CONSTRUCT(&mca_btl_mx_component.mx_send_eager_frags, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_mx_component.mx_send_user_frags, ompi_free_list_t);
OBJ_CONSTRUCT(&mca_btl_mx_component.mx_procs, opal_list_t);
OBJ_CONSTRUCT(&mca_btl_mx_component.mx_lock, opal_mutex_t);
ompi_free_list_init_new( &mca_btl_mx_component.mx_send_eager_frags,
sizeof(mca_btl_mx_frag_t) + mca_btl_mx_module.super.btl_eager_limit,
CACHE_LINE_SIZE,
OBJ_CLASS(mca_btl_mx_frag_t),
0,CACHE_LINE_SIZE,
mca_btl_mx_component.mx_free_list_num,
mca_btl_mx_component.mx_free_list_max,
mca_btl_mx_component.mx_free_list_inc,
NULL ); /* use default allocator */
ompi_free_list_init_new( &mca_btl_mx_component.mx_send_user_frags,
sizeof(mca_btl_mx_frag_t),
CACHE_LINE_SIZE,
OBJ_CLASS(mca_btl_mx_frag_t),
0,CACHE_LINE_SIZE,
mca_btl_mx_component.mx_free_list_num,
mca_btl_mx_component.mx_free_list_max,
mca_btl_mx_component.mx_free_list_inc,
NULL ); /* use default allocator */
/* intialize process hash table */
OBJ_CONSTRUCT( &mca_btl_mx_component.mx_procs, opal_list_t );
/* get the number of card available on the system */
if( (status = mx_get_info( NULL, MX_NIC_COUNT, NULL, 0,
&mca_btl_mx_component.mx_num_btls, sizeof(uint32_t))) != MX_SUCCESS ) {
opal_output( 0, "mca_btl_mx_component_init: mx_get_info(MX_NIC_COUNT) failed with status %d(%s)\n",
status, mx_strerror(status) );
ompi_modex_send(&mca_btl_mx_component.super.btl_version,
NULL, 0);
return NULL;
}
if (0 == mca_btl_mx_component.mx_num_btls) {
mca_btl_base_error_no_nics("Myrinet/MX", "NIC");
ompi_modex_send(&mca_btl_mx_component.super.btl_version,
NULL, 0);
return NULL;
}
#if 0
/* check for limit on number of btls */
if(mca_btl_mx_component.mx_num_btls > mca_btl_mx_component.mx_max_btls)
mca_btl_mx_component.mx_num_btls = mca_btl_mx_component.mx_max_btls;
#endif
/* Now we know how many NIC are available on the system. We will create a BTL for each one
* and then give a pointer to the BTL to the upper level.
*/
mca_btl_mx_component.mx_btls = malloc( mca_btl_mx_component.mx_num_btls * sizeof(mca_btl_base_module_t*) );
if( NULL == mca_btl_mx_component.mx_btls ) {
opal_output( 0, "MX BTL no memory\n" );
return NULL;
}
/* determine the NIC ids */
size = sizeof(uint64_t) * (mca_btl_mx_component.mx_num_btls + 1);
if( NULL == (nic_addrs = (uint64_t*)malloc(size)) )
return NULL;
if( (status = mx_get_info( NULL, MX_NIC_IDS, NULL, 0,
nic_addrs, size)) != MX_SUCCESS) {
opal_output(0, "MX BTL error (mx_get_info failed) size = %ld [%s] #cards %d\n",
(unsigned long)size, mx_strerror(status), mca_btl_mx_component.mx_num_btls );
free(nic_addrs);
return NULL;
}
mx_addrs = (mca_btl_mx_addr_t*)calloc( mca_btl_mx_component.mx_num_btls, sizeof(mca_btl_mx_addr_t) );
if( NULL == mx_addrs ) {
free( nic_addrs );
return NULL;
}
/* create a btl for each NIC */
for( i = count = 0; i < mca_btl_mx_component.mx_num_btls; i++ ) {
mca_btl_mx_module_t* mx_btl = mca_btl_mx_create(nic_addrs[i]);
if( NULL == mx_btl ) {
continue;
}
status = mx_decompose_endpoint_addr( mx_btl->mx_endpoint_addr, &(mx_addrs[count].nic_id),
&(mx_addrs[count].endpoint_id) );
if( MX_SUCCESS != status ) {
mca_btl_mx_finalize( &mx_btl->super );
continue;
}
mx_addrs[count].unique_network_id = mx_btl->mx_unique_network_id;
#if OMPI_ENABLE_HETEROGENEOUS_SUPPORT
BTL_MX_ADDR_HTON(mx_addrs[count]);
#endif
mca_btl_mx_component.mx_btls[count] = mx_btl;
count++; /* one more succesfully initialized MX interface */
}
mca_btl_mx_component.mx_num_btls = count;
*num_btl_modules = count;
if( 0 == count ) {
/* No active BTL module */
return NULL;
}
/* publish the MX addresses via the MCA framework */
ompi_modex_send(&mca_btl_mx_component.super.btl_version, mx_addrs,
sizeof(mca_btl_mx_addr_t) * mca_btl_mx_component.mx_num_btls);
free( nic_addrs );
free( mx_addrs );
btls = malloc( mca_btl_mx_component.mx_num_btls * sizeof(mca_btl_base_module_t*) );
if( NULL == btls ) {
free( mca_btl_mx_component.mx_btls );
mca_btl_mx_component.mx_num_btls = 0; /* no active BTL modules */
return NULL;
}
memcpy( btls, mca_btl_mx_component.mx_btls,
mca_btl_mx_component.mx_num_btls*sizeof(mca_btl_mx_module_t*) );
return btls;
}
/*
* MX component progress.
*/
int mca_btl_mx_component_progress(void)
{
int32_t num_progressed = 0, i;
mx_status_t mx_status;
mx_return_t mx_return;
mx_request_t mx_request;
mca_btl_mx_frag_t* frag;
for( i = 0; i < mca_btl_mx_component.mx_num_btls; i++ ) {
mca_btl_mx_module_t* mx_btl = mca_btl_mx_component.mx_btls[i];
uint32_t mx_result = 0;
mx_return = mx_ipeek( mx_btl->mx_endpoint, &mx_request, &mx_result );
if( OPAL_UNLIKELY(mx_return != MX_SUCCESS) ) {
opal_output( 0, "mca_btl_mx_component_progress: mx_ipeek() failed with status %d (%s)\n",
mx_return, mx_strerror(mx_return) );
continue;
}
if( OPAL_LIKELY(mx_result == 0) ) {
continue;
}
mx_return = mx_test( mx_btl->mx_endpoint, &mx_request, &mx_status, &mx_result);
if( OPAL_UNLIKELY(mx_return != MX_SUCCESS) ) {
opal_output(0, "mca_btl_mx_progress: mx_test() failed with status %d (%s)\n",
mx_return, mx_strerror(mx_return));
continue;
}
/* on the mx_status we have now the pointer attached to the request.
* This pointer indicate which fragment we are working on. On the
* status we have the status of the operation, so we know what we
* are supposed to do next.
*/
frag = mx_status.context;
if( NULL != frag ) {
if( 0xff == frag->type ) { /* it's a send */
/* call the completion callback */
frag->base.des_cbfunc( &(mx_btl->super), frag->endpoint,
&(frag->base), OMPI_SUCCESS );
} else if( !mca_btl_mx_component.mx_use_unexpected ) { /* and this one is a receive */
mca_btl_active_message_callback_t* reg;
mx_segment_t mx_segment;
uint8_t tag = mx_status.match_info & 0xff;
reg = mca_btl_base_active_message_trigger + tag;
frag->base.des_dst->seg_len = mx_status.msg_length;
reg->cbfunc( &(mx_btl->super), tag, &(frag->base), reg->cbdata );
/**
* The upper level extract the data from the fragment.
* Now we can register the fragment
* again with the MX BTL.
*/
mx_segment.segment_ptr = frag->base.des_dst->seg_addr.pval;
mx_segment.segment_length = mca_btl_mx_module.super.btl_eager_limit;
mx_return = mx_irecv( mx_btl->mx_endpoint, &mx_segment, 1,
0x0ULL, 0x0ULL,
frag, &(frag->mx_request) );
if( MX_SUCCESS != mx_return ) {
opal_output( 0, "Fail to re-register a fragment with the MX NIC ... (%s)\n",
mx_strerror(mx_return) );
}
}
}
num_progressed++;
}
return num_progressed;
}
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