id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2485	MPI broadcast issue	bryon.robidoux@…	Matthias Troyer	"The broadcast function is crashing and I can't see anything that I am doing wrong. Below I have the code and output to a very simple program that I used test the boost API.

I compiled the boost libraries using Visual Studio 2008 SP1. I linked the MPI library against msmpi that is provided with the HPC server 2008 SDK. I ran this on a single HPC server 2008 box, so there is no cluster involved. It is the simplest case possible.

Thanks for your help,
Bryon

Example Program ***************************************************
int main(int argc, char* argv[])
{
	mpi::environment env(argc, argv);
	mpi::communicator world;
	char value[128]={'\0'};
	if(world.rank()==0){
		strcpy(value,""Hello Bryon from C API\0"");
		cout<<""start ""<<value<<endl;
	}
	
	MPI_Bcast(value,12 , MPI_INT, 0, MPI_COMM_WORLD);
	std::cout<<world.rank()<<""  "" << value<<std::endl;

	bool was_successful=false;
	if(world.rank()==0)
		was_successful=true;
	mpi::broadcast(world,was_successful,0);
	std::cout<<world.rank()<<"" :""<<(was_successful?""Success with broacasting boolean"":""Failure with broadcasting boolean"")<<std::endl;

	std::string bvalue;
	if(world.rank()==0)
		bvalue=""Hello Bryon from boost API with string."";
	mpi::broadcast(world,bvalue,0);
	std::cout<<world.rank()<<"" :""<<bvalue<<std::endl;

	return 0;
}

Output ********************************************************

E:\HPC Class\hpcs-day3\HPCS-Day3\demos\09 MPI-Send-Recv\TaskParallelMPI\x64\rele
ase>mpiexec -n 2 TaskParallelMPI
start Hello Bryon from C API
0  Hello Bryon from C API
0 :Success with broacasting boolean
1  Hello Bryon from C API
1 :Success with broacasting boolean

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

job aborted:
[ranks] message

[0] terminated

[1] process exited without calling finalize

---- error analysis -----

[1] on 2008ROBIDOUXBR
TaskParallelMPI ended prematurely and may have crashed. exit code 255

---- error analysis -----

E:\HPC Class\hpcs-day3\HPCS-Day3\demos\09 MPI-Send-Recv\TaskParallelMPI\x64\rele
ase>"	Bugs	closed	Boost 1.38.0	mpi	Boost 1.36.0	Showstopper	worksforme	broadcast MPI