Hi, Thanks for the previous post on MPI_Init_thread. Here is the sample program which failed #include<cstdio> #include<cstdlib> #include<cstring> #include<iostream> #include<vector> #include<pthread.h> #include<mpi.h> #include <boost/mpi/environment.hpp> #include <boost/mpi/communicator.hpp> #include <boost/serialization/vector.hpp> #include <boost/mpi.hpp> using namespace std; using namespace boost::serialization; using namespace boost::archive; namespace mpi = boost::mpi; // using mpi library under boost namespace mpi::environment env; mpi::communicator world; #define MASTER 0 // Aim of this program is to print the Rank of each process and size of number of MPI Run int main(int argc, char *argv[]) { // Declarations and prototypes int rankID, numprocessors,provided; // Any serial code goes in here // Initialize the MPI Environment over here //MPI_Init(&argc,&argv); int returnvalue = MPI_Init_thread(&argc,&argv,MPI_THREAD_MULTIPLE,&provided); printf("\n VALUE OF PROVIDED IS %d",provided); printf("\n VALUE OF MPI_THREAD_MULTIPLE IS %d",MPI_THREAD_MULTIPLE); if(provided < MPI_THREAD_MULTIPLE) { printf("\n THREAD LIBRARY DOESN'T HAVE MULTITHREADING SUPPORT:"); //exit(1); } // Terminate the MPI Environment MPI_Finalize(); } Error got: Assertion failed in file /home/viswa/libraries/mpich-3.1.4/src/include/mpiimplthreadpost.h at line 163: depth > 0 && depth < 10 internal ABORT - process 1 internal ABORT - process 0 I tried to use boost library in my MPI Code. Is MPI_Init_thread designed to work with Boost libraries?. If not, please suggest an alternative to send vectors(STL types) using MPI. MPI version - 3.1.4 CPU Info: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 2 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 44 Stepping: 2 CPU MHz: 3458.000 BogoMIPS: 6916.00 Hypervisor vendor: VMware Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 12288K NUMA node0 CPU(s): 0-7 _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss