Difference between revisions of "HPC:Boost"
| Line 17: | Line 17: | ||
// Allows you to query the MPI environment | // Allows you to query the MPI environment | ||
boost::mpi::environment env( argc, argv ); | boost::mpi::environment env( argc, argv ); | ||
| − | std::string | + | std::string node_name( env.processor_name() ); |
// permits communication and synchronization among a set of processes | // permits communication and synchronization among a set of processes | ||
| − | boost::mpi::communicator | + | boost::mpi::communicator my_world; |
| − | unsigned int rank( | + | unsigned int rank( my_world.rank() ), cpu_num( my_world.size() ); |
if ( rank == 0 ) { | if ( rank == 0 ) { | ||
| − | std::cout << " | + | std::cout << "Node name: " << node_name << "\n"; |
| − | std::cout << "Master (" << rank << "/" << | + | std::cout << "Master (" << rank << "/" << cpu_num << ")\n"; |
} else { | } else { | ||
| − | std::cout << "Slave (" << rank << "/" << | + | std::cout << "Slave (" << rank << "/" << cpu_num << ")\n"; |
} | } | ||
return 0; | return 0; | ||
| Line 89: | Line 89: | ||
[asrini@node062 ~]$ mpirun -np 2 ./Boost | [asrini@node062 ~]$ mpirun -np 2 ./Boost | ||
| − | + | Node name: node061.hpc.local | |
Master (0/2) | Master (0/2) | ||
Slave (1/2) | Slave (1/2) | ||
| − | |||
</pre> | </pre> | ||
| Line 149: | Line 148: | ||
[asrini@node062 ~]$ mpirun -np 2 ./Boost | [asrini@node062 ~]$ mpirun -np 2 ./Boost | ||
| − | + | Node name: node061.hpc.local | |
Master (0/2) | Master (0/2) | ||
Slave (1/2) | Slave (1/2) | ||
Revision as of 15:46, 19 March 2015
Contents
Boost
There are currently three different versions of Boost C++ Libraries installed on all the PMACS cluster nodes.
Boost v1.41.0 is the system default version and can be linked to programs without any additional work.
Note : The default version of Boost may not include all the desired libraries. For example MPI library bindings may not work as expected.
Additional versions of Boost
Boost v1.55.0 and v1.57.0 are both available as modules. The example C++ code below can be used to test Boost v1.55.0 and v1.57.0 functionality on the PMACS cluster.
Code below has been adapted from the following sources 1 and 2
#include <iostream>
#include "boost/mpi.hpp"
int main(int argc, char* argv[])
{
// Allows you to query the MPI environment
boost::mpi::environment env( argc, argv );
std::string node_name( env.processor_name() );
// permits communication and synchronization among a set of processes
boost::mpi::communicator my_world;
unsigned int rank( my_world.rank() ), cpu_num( my_world.size() );
if ( rank == 0 ) {
std::cout << "Node name: " << node_name << "\n";
std::cout << "Master (" << rank << "/" << cpu_num << ")\n";
} else {
std::cout << "Slave (" << rank << "/" << cpu_num << ")\n";
}
return 0;
}
Copy the code above into a file called boost_test.cpp
Boost v1.55.0
The above code snippet is intended to verify Boost.MPI library functionality. Follow the steps below in an interactive node. Launch an interactive session with -n 2 to ensure that the number of processors used in this Boost.MPI test are accounted for
Load the appropriate Boost version module:
[asrini@consign ~]$ bsub -n 2 -Is bash [asrini@node062 ~]$ ls boost_test.cpp boost_test.cpp [asrini@node062 ~]$ module load openmpi-1.5.4-x86_64 [asrini@node062 ~]$ module load boost-1.55.0
Now compile the code against the version of Boost you are testing.
[asrini@node062 ~]$ mpic++ -W -Wall -L/opt/software/boost/1.55.0/lib/ -lboost_mpi -lboost_serialization boost_test.cpp -o Boost
Verify that the executable created was indeed compiled against this version of Boost. Notice the path to libboost_mpi.so.1.55.0 in the output below:
[asrini@node062 ~]$ ldd Boost linux-vdso.so.1 => (0x00007fff469bd000) libboost_mpi.so.1.55.0 => /opt/software/boost/1.55.0/lib/libboost_mpi.so.1.55.0 (0x00002b06dbfc6000) libboost_serialization.so.1.55.0 => /opt/software/boost/1.55.0/lib/libboost_serialization.so.1.55.0 (0x00002b06dc1f6000) libmpi_cxx.so.1 => /usr/lib64/openmpi/lib/libmpi_cxx.so.1 (0x00002b06dc470000) libmpi.so.1 => /usr/lib64/openmpi/lib/libmpi.so.1 (0x00000031d0e00000) libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000031cfe00000) libm.so.6 => /lib64/libm.so.6 (0x00000031ce200000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000031d0600000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00000031cea00000) libc.so.6 => /lib64/libc.so.6 (0x00000031ce600000) librt.so.1 => /lib64/librt.so.1 (0x00000031cf600000) libopen-rte.so.7 => /usr/lib64/openmpi/lib/libopen-rte.so.7 (0x00000031d0a00000) libopen-pal.so.6 => /usr/lib64/openmpi/lib/libopen-pal.so.6 (0x00000031d0200000) libdl.so.2 => /lib64/libdl.so.2 (0x00000031cee00000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00000031d1600000) libutil.so.1 => /lib64/libutil.so.1 (0x00000031d2200000) libltdl.so.7 => /usr/lib64/libltdl.so.7 (0x00000031cfa00000) /lib64/ld-linux-x86-64.so.2 (0x00000031cde00000)
Test run this program:
[asrini@node062 ~]$ mpirun -np 2 ./Boost Node name: node061.hpc.local Master (0/2) Slave (1/2)
Boost v1.57.0
The above code snippet is intended to verify Boost.MPI library functionality. Follow the steps below in an interactive node. Launch an interactive session with -n 2 to ensure that the number of processors used in this Boost.MPI test are accounted for
Load the appropriate Boost version module:
[asrini@consign ~]$ bsub -n 2 -Is bash [asrini@node062 ~]$ ls boost_test.cpp boost_test.cpp [asrini@node061 ~]$ module load openmpi-1.5.4-x86_64 [asrini@node061 ~]$ module load boost-1.57.0
Now compile the code against the version of Boost you are testing.
[asrini@node062 ~]$ mpic++ -W -Wall -L/opt/software/boost/1.57.0/lib/ -lboost_mpi -lboost_serialization boost_test.cpp -o Boost
Verify that the executable created was indeed compiled against this version of Boost. Notice the path to libboost_mpi.so.1.57.0 in the output below:
[asrini@node062 ~]$ ldd Boost linux-vdso.so.1 => (0x00007fff4e1ff000) libboost_mpi.so.1.57.0 => /opt/software/boost/1.57.0/lib/libboost_mpi.so.1.57.0 (0x00002b55d5d0c000) libboost_serialization.so.1.57.0 => /opt/software/boost/1.57.0/lib/libboost_serialization.so.1.57.0 (0x00002b55d5f3c000) libmpi_cxx.so.1 => /usr/lib64/openmpi/lib/libmpi_cxx.so.1 (0x00002b55d61a6000) libmpi.so.1 => /usr/lib64/openmpi/lib/libmpi.so.1 (0x00000031d0e00000) libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000031cfe00000) libm.so.6 => /lib64/libm.so.6 (0x00000031ce200000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000031d0600000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00000031cea00000) libc.so.6 => /lib64/libc.so.6 (0x00000031ce600000) librt.so.1 => /lib64/librt.so.1 (0x00000031cf600000) libopen-rte.so.7 => /usr/lib64/openmpi/lib/libopen-rte.so.7 (0x00000031d0a00000) libopen-pal.so.6 => /usr/lib64/openmpi/lib/libopen-pal.so.6 (0x00000031d0200000) libdl.so.2 => /lib64/libdl.so.2 (0x00000031cee00000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00000031d1600000) libutil.so.1 => /lib64/libutil.so.1 (0x00000031d2200000) libltdl.so.7 => /usr/lib64/libltdl.so.7 (0x00000031cfa00000) /lib64/ld-linux-x86-64.so.2 (0x00000031cde00000)
Test run this program:
[asrini@node062 ~]$ mpirun -np 2 ./Boost Node name: node061.hpc.local Master (0/2) Slave (1/2)
