Hi
The code below compiles fine , but gives the
[ceng1:23288] *** Process received signal ***
[ceng1:23288] Signal: Segmentation fault (11)
[ceng1:23288] Signal code: Address not mapped (1)
[ceng1:23288] Failing at address: 0xfffffffffffffff9
[ceng1:23288] [ 0] /lib64/libpthread.so.0 [0x3baf40de80]
[ceng1:23288] [ 1] /usr/lib64/libstdc++.so.6(_ZN9__gnu_cxx18__exchange_and_addEPVii+0x2) [0x38d9cb7672]
[ceng1:23288] [ 2] /usr/lib64/libstdc++.so.6(_ZNSs6assignERKSs+0x9b) [0x38d9c9ca4b]
[ceng1:23288] [ 3] test-boost(_ZN5fieldaSERKS_+0x47) [0x4219a1]
[ceng1:23288] [ 4] test-boost(_ZNSt6__copyILb0ESt26random_access_iterator_tagE4copyIPK5fieldPS3_EET0_T_S8_S7_+0x3c) [0x4221e0]
[ceng1:23288] [ 5] test-boost(_ZSt10__copy_auxIPK5fieldPS0_ET0_T_S5_S4_+0x29) [0x422225]
[ceng1:23288] [ 6] test-boost(_ZNSt13__copy_normalILb0ELb0EE6copy_nIPK5fieldPS2_EET0_T_S7_S6_+0x25) [0x42224d]
[ceng1:23288] [ 7] test-boost(_ZSt4copyIPK5fieldPS0_ET0_T_S5_S4_+0x2d) [0x42227d]
[ceng1:23288] [ 8] test-boost(_ZN5boost3mpi6detail12scatter_implI5fieldEEvRKNS0_12communicatorEPKT_PS7_iiN4mpl_5bool_ILb0EEE+0x90) [0x42a652]
[ceng1:23288] [ 9] test-boost(_ZN5boost3mpi7scatterI5fieldEEvRKNS0_12communicatorEPKT_PS6_ii+0x50) [0x42b184]
[ceng1:23288] [10] test-boost(_ZN5boost3mpi7scatterI5fieldEEvRKNS0_12communicatorERKSt6vectorIT_SaIS7_EEPS7_ii+0x55) [0x42b1fd]
[ceng1:23288] [11] test-boost(main+0x231) [0x4208a3]
[ceng1:23288] [12] /lib64/libc.so.6(__libc_start_main+0xf4) [0x3bae81d8b4]
[ceng1:23288] [13] test-boost(__gxx_personality_v0+0x169) [0x420489]
[ceng1:23288] *** End of error message ***
mpirun noticed that job rank 0 with PID 23288 on node ceng1-ib exited on signal 11 (Segmentation fault).
run time errors. Is this due to miss-use of boost functions or am I doing wrong with memory allocation?
#include <boost/mpi/environment.hpp>
#include <boost/mpi/communicator.hpp>
#include <boost/mpi/collectives.hpp>
#include <boost/thread/barrier.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/config.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/access.hpp>
#include <boost/serialization/string.hpp>
#include <string>
#include <iostream>
#include <vector>
#include <fstream>
#define MASTER 0
int arraySize = 7;
using namespace std;
namespace mpi = boost::mpi;
struct field {
string field_name;
string field_type;
string field_ref;
string field_colType;
};
namespace boost {
namespace serialization{
template<class Archive>
void serialize(Archive & ar, struct field & f, unsigned int version){
ar & f.field_name;
ar & f.field_type;
ar & f.field_ref;
ar & f.field_colType;
}
}
}
int main(int argc, char* argv[])
{
mpi::environment env(argc, argv);
mpi::communicator world;
int m_mySize, w_mySize, kk,i;
struct field *relAllValues;
struct field *relMyValues;
vector<struct field> C;
struct field c;
w_mySize = arraySize / world.size();
cout << "w_mySize = " << w_mySize << endl;
if (world.rank() == MASTER){
for(int i = 0; i < arraySize; i++){
c.field_name = "field_name=" + i;
c.field_type = "field_type=" + i;
c.field_ref = "field_ref=" + i;
c.field_colType = "field_colType=" + i;
C.push_back(c);
}
m_mySize = arraySize / world.size() + arraySize % world.size();
relMyValues = (struct field *) malloc(sizeof(struct field) * m_mySize);
relAllValues = (struct field *) malloc(sizeof(struct field) * arraySize);
}
else{
relMyValues = (struct field *) malloc(sizeof(struct field) * w_mySize);
}
if (world.rank() == MASTER){
scatter(world, C, relMyValues, w_mySize, 0);
}
else{
scatter(world, C, relMyValues, w_mySize, 0);
}
}