[OMPI users] not enough slots available

[Mahmood Naderan]

Sorry about the incomplete message...

Is there any idea about the following error? On that node, there are 15
empty cores.

$ /share/apps/siesta/openmpi-2.0.1/bin/mpirun --host compute-0-3 -np 2
/share/apps/siesta/siesta-4.0-mpi201/tpar/transiesta < A.fdf
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 2 slots
that were requested by the application:
/share/apps/siesta/siesta-4.0-mpi201/tpar/transiesta

Either request fewer slots for your application, or make more slots
available
for use.
--------------------------------------------------------------------------



Regards,
Mahmood

[Mahmood Naderan]

I found that if I put "compute-0-3" in a file (say hosts.txt) and pass that
file name via --hostfile, then the error disappears.

It is interesting to know what is the difference between these two? I think
it is very common to specify the nodes with --host option.


Regards,
Mahmood

Post by Mahmood Naderan
Sorry about the incomplete message...
Is there any idea about the following error? On that node, there are 15
empty cores.
$ /share/apps/siesta/openmpi-2.0.1/bin/mpirun --host compute-0-3 -np 2
/share/apps/siesta/siesta-4.0-mpi201/tpar/transiesta < A.fdf
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 2 slots
/share/apps/siesta/siesta-4.0-mpi201/tpar/transiesta
Either request fewer slots for your application, or make more slots
available
for use.
--------------------------------------------------------------------------
Regards,
Mahmood