//get the file with MPI_MODE_DELETE_ON_CLOSE and then close it
File* f = new File(MPI_COMM_SELF,filename,MPI_MODE_DELETE_ON_CLOSE|MPI_MODE_RDWR, nullptr);
close(&f);
//get the file with MPI_MODE_DELETE_ON_CLOSE and then close it
File* f = new File(MPI_COMM_SELF,filename,MPI_MODE_DELETE_ON_CLOSE|MPI_MODE_RDWR, nullptr);
close(&f);