Creation mode better implementation

lib/communicator/Communicator_mpi3.cc

@@ -206,7 +206,7 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
       sprintf(shm_name,"/Grid_mpi3_shm_%d_%d",GroupRank,r);
 
       shm_unlink(shm_name);
-      int fd=shm_open(shm_name,O_RDWR|O_CREAT,0660);
+      int fd=shm_open(shm_name,O_RDWR|O_CREAT,0666);
       if ( fd < 0 ) {	perror("failed shm_open");	assert(0);      }
       ftruncate(fd, size);
 
@@ -226,7 +226,7 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
     
       sprintf(shm_name,"/Grid_mpi3_shm_%d_%d",GroupRank,r);
 
-      int fd=shm_open(shm_name,O_RDWR,0660);
+      int fd=shm_open(shm_name,O_RDWR,0666);
       if ( fd<0 ) {	perror("failed shm_open");	assert(0);      }
 
       void * ptr =  mmap(NULL,size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);