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openmpi/ompi/mca/btl/mx/btl_mx_component.c
George Bosilca 7dfdf3e907 A lot of MX fixes. 
1. Allow MX bonding via btl_mx_bonding MCA parameter. With this on, Open MPI
  suppose that lib MX will do the bonding, and we will only return one BTL.
  Otherwise, we return as many as devices.
2. Decrease the memory footprint, by cleaning up what we store about the
  peers and how we store it.
3. Allow multiple MX routes that share the same mapper. In this particular
  case we will link by their nic_id.
4. Allow multiple MX routes with multiple mappers. In this case we match
  the NICs based on the last 6 digits of the mapper MAC.
5. Increase the size of the eager and rendez-vous eager limits in the
  case where we are unable to register an unexpected callback with MX.
6. Increase the default max number of MX fragments.
7. Increase the max number of MX BTLs.
8. Only allow mx_if_include and mx_if_exclude if we have acess to the
  mapper.

This commit was SVN r19788.
2008-10-22 20:12:30 +00:00

678 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) 2004-2008 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 */
{
MCA_BTL_BASE_VERSION_2_0_0,
"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 */
},
{
/* The component is checkpoint ready */
MCA_BASE_METADATA_PARAM_CHECKPOINT
},
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, 10, &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 );
mca_base_param_reg_int( (mca_base_component_t*)&mca_btl_mx_component, "bonding",
"True if the lib MX is in charge of doing the device bonding, false if Open MPI will take care of it.",
false, false, 0, &mca_btl_mx_component.mx_bonding );
#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, 1024, &mca_btl_mx_component.mx_free_list_max );
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 );
#if MX_HAVE_MAPPER_STATE
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 );
#endif /* MX_HAVE_MAPPER_STATE */
mca_btl_mx_module.super.btl_exclusivity = MCA_BTL_EXCLUSIVITY_DEFAULT;
if( mca_btl_mx_component.mx_use_unexpected ) {
mca_btl_mx_module.super.btl_eager_limit = 1024;
mca_btl_mx_module.super.btl_rndv_eager_limit = 1024;
} else {
mca_btl_mx_module.super.btl_eager_limit = 4*1024;
mca_btl_mx_module.super.btl_rndv_eager_limit = 4*1024;
}
mca_btl_mx_module.super.btl_max_send_size = 32*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 MX_HAVE_MAPPER_STATE
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;
}
#endif /* MX_HAVE_MAPPER_STATE */
return OMPI_SUCCESS;
}
#ifdef HAVE_MX_REGISTER_UNEXP_HANDLER
static int __counter = 0;
/**
* 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;
if( 0 == __counter ) {
return MX_RECV_CONTINUE;
}
/*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( !(0x01 & match_value) ) {
return MX_RECV_CONTINUE;
}
tag = (match_value >> 8) & 0xff;
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 initialize an MX BTL 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]));
}
/* 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;
}
#endif /* MX_HAVE_MAPPER_STATE */
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;
/**
* As the MX MTL get initialized before the MX BTL it will call the
* mx_init and the environment variables set by the BTL will be useless.
* Closing the MX will force the next call to mx_init to take these
* environment variables into account.
*/
/*(void)ompi_common_mx_finalize();*/
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 );
/* 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);
/* 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 );
if( mca_btl_mx_component.mx_bonding ) {
mca_btl_mx_component.mx_num_btls = 1; /* there is only one! */
} else {
/* 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;
}
/* 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, "mca_btl_mx_component_init: mx_get_info(MX_NICS_IDS) 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;
}
/*
* Limit ourselves to the number of devices requested by the users.
*/
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;
}
}
/* 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;
}
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;
if( ++__counter > 1 ) {
opal_output( 0, "OOPS\n" );
}
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;
recheck_device:
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;
num_progressed++;
/* If the context is NULL then we are facing a send immediate request. Therefore,
* nothing special should be done, just keep going.
*/
if( NULL == frag ) goto recheck_device;
if( MCA_BTL_MX_SEND == frag->type ) { /* it's a send */
int btl_ownership = (frag->base.des_flags & MCA_BTL_DES_FLAGS_BTL_OWNERSHIP);
/* call the completion callback */
if( MCA_BTL_DES_SEND_ALWAYS_CALLBACK & frag->base.des_flags ) {
frag->base.des_cbfunc( &(mx_btl->super), frag->endpoint,
&(frag->base), OMPI_SUCCESS );
}
if( btl_ownership ) {
MCA_BTL_MX_FRAG_RETURN( mx_btl, frag );
}
goto recheck_device;
#if 0
} else if( !mca_btl_mx_component.mx_use_unexpected ) { /* and this one is a receive */
#endif
} else {
mca_btl_active_message_callback_t* reg;
mx_segment_t mx_segment;
uint8_t tag = (mx_status.match_info >> 8) & 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,
0x01ULL, BTL_MX_RECV_MASK,
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) );
}
}
}
__counter--;
return num_progressed;
}
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