Is it a bug in openmpi V1.5.1 ?
Bernard
Bernard Secher - SFME/LGLS a écrit :
Hello,
What are the changes between openMPI 1.4.1 and 1.5.1 about MPI2
service of publishing name.
I have 2 programs which connect them via MPI_Publish_name and
MPI_Lookup_name subroutines and ompi-server.
That's OK with 1.4.1 version , but I have a deadlock with 1.5.1
version inside the subroutine MPI_Publish_name and MPI_Lookup_name.
best
Bernard
That's my connection subroutine:
MPI_Comm remoteConnect(int myrank, int *srv, char *port_name, char* service)
{
int clt=0;
MPI_Request request; /* requete pour communication non bloquante */
MPI_Comm gcom;
MPI_Status status;
char port_name_clt[MPI_MAX_PORT_NAME];
if( service == NULL ) service = defaultService;
/* only process of rank null can publish name */
MPI_Barrier(MPI_COMM_WORLD);
/* A lookup for an unpublished service generate an error */
MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
if( myrank == 0 ){
/* Try to be a server. If there service is already published, try to be a
cient */
MPI_Open_port(MPI_INFO_NULL, port_name);
printf("[%d] Publish name\n",myrank);
if ( MPI_Publish_name(service, MPI_INFO_NULL, port_name) == MPI_SUCCESS ) {
*srv = 1;
printf("[%d] service %s available at %s\n",myrank,service,port_name);
}
else if ( MPI_Lookup_name(service, MPI_INFO_NULL, port_name_clt) ==
MPI_SUCCESS ){
MPI_Close_port( port_name );
clt = 1;
}
else
/* Throw exception */
printf("[%d] Error\n",myrank);
}
else{
/* Waiting rank 0 publish name */
sleep(1);
printf("[%d] Lookup name\n",myrank);
if ( MPI_Lookup_name(service, MPI_INFO_NULL, port_name_clt) == MPI_SUCCESS
){
clt = 1;
}
else
/* Throw exception */
;
}
MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_ARE_FATAL);
MPI_Bcast(srv,1,MPI_INT,0,MPI_COMM_WORLD);
if ( *srv )
/* I am the Master */
MPI_Comm_accept( port_name, MPI_INFO_NULL, 0, MPI_COMM_WORLD, &gcom );
else{
/* Connect to service SERVER, get the inter-communicator server*/
MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
if ( MPI_Comm_connect(port_name_clt, MPI_INFO_NULL, 0, MPI_COMM_WORLD,
&gcom ) == MPI_SUCCESS )
printf("[%d] I get the connection with %s at %s !\n",myrank, service,
port_name_clt);
MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_ARE_FATAL);
}
if(myrank != 0) *srv = 0;
return gcom;
}
------------------------------------------------------------------------
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
--
_\\|//_
(' 0 0 ')
____ooO (_) Ooo______________________________________________________
Bernard Sécher DEN/DM2S/SFME/LGLS mailto : bsec...@cea.fr
CEA Saclay, Bât 454, Pièce 114 Phone : 33 (0)1 69 08 73 78
91191 Gif-sur-Yvette Cedex, France Fax : 33 (0)1 69 08 10 87
------------Oooo---------------------------------------------------
oooO ( )
( ) ) /
\ ( (_/
\_)
Ce message électronique et tous les fichiers attachés qu'il contient
sont confidentiels et destinés exclusivement à l'usage de la personne
à laquelle ils sont adressés. Si vous avez reçu ce message par erreur,
merci d'en avertir immédiatement son émetteur et de ne pas en conserver
de copie.
This e-mail and any files transmitted with it are confidential and
intended solely for the use of the individual to whom they are addressed.
If you have received this e-mail in error please inform the sender
immediately, without keeping any copy thereof.
