
from mpi4py import MPI


comm = MPI.COMM_WORLD


def get_host():
    return MPI.Get_processor_name()


def get_rank():
    return comm.Get_rank()


def finalize():
    return MPI.Finalize()


from mpi4py import MPI


comm = MPI.COMM_WORLD


def get_host():
    return MPI.Get_processor_name()


def get_rank():
    return comm.Get_rank()


def host_rank_mapping():
    """Get host to rank mapping

    Return dictionary mapping ranks to host
    """
    d = {}
    for (host, rank) in comm.allgather((get_host(), get_rank())):
        if host not in d:
            d[host] = []
        d[host].append(rank)
    return d


def finalize():
    return MPI.Finalize()

Add function to get the host-rank mapping of mpi tasks
Add function to get the host-rank mapping of mpi tasks

  
  from mpi4py import MPI
  
  
  comm = MPI.COMM_WORLD
  
  
  def get_host():
      return MPI.Get_processor_name()
  
  
  def get_rank():
      return comm.Get_rank()
  
  
+ def host_rank_mapping():
+     """Get host to rank mapping
+ 
+     Return dictionary mapping ranks to host
+     """
+     d = {}
+     for (host, rank) in comm.allgather((get_host(), get_rank())):
+         if host not in d:
+             d[host] = []
+         d[host].append(rank)
+     return d
+ 
+ 
  def finalize():
      return MPI.Finalize()
  
Add function to get the host-rank mapping of mpi tasks
## Code Before:

from mpi4py import MPI


comm = MPI.COMM_WORLD


def get_host():
    return MPI.Get_processor_name()


def get_rank():
    return comm.Get_rank()


def finalize():
    return MPI.Finalize()

## Instruction:
Add function to get the host-rank mapping of mpi tasks
## Code After:

from mpi4py import MPI


comm = MPI.COMM_WORLD


def get_host():
    return MPI.Get_processor_name()


def get_rank():
    return comm.Get_rank()


def host_rank_mapping():
    """Get host to rank mapping

    Return dictionary mapping ranks to host
    """
    d = {}
    for (host, rank) in comm.allgather((get_host(), get_rank())):
        if host not in d:
            d[host] = []
        d[host].append(rank)
    return d


def finalize():
    return MPI.Finalize()
