User guide

2–FastFabric TUI Menu
Fast Fabric IB Host Setup
2-20 IB0054607-01 A
Edit Configuration and Select/Edit Hosts Files
(All) This will permit the hosts and fastfabric.conf files to be edited. The hosts
file selected and created using this menu should not list the FastFabric host itself.
After editing the two files, an opportunity is given to edit them again or continue
forward.
Selected Host File: /etc/sysconfig/iba/hosts
Do you want to edit/review/change the files? [y]:
The default will repeat the editing process, answer n to continue forward.
Refer to FastFabric Command Line Interface Reference Guide for more details
about the format of the hosts file.
Verify Hosts via Ethernet ping
(All) This will run the pingall command. All the hosts listed will be pinged
through the Management Network.
Setup Password-less SSH/SCP
(Linux) This will run the setup_ssh -s -S -i “” command. This will setup
secure password-less SSH such that the InfiniBand Management Node can
securely login to all the other hosts as root through the management network
without requiring a password. The user will be prompted for the present password
of the hosts, the same password will be used to login to all selected hosts. Once
password-less ssh is setup, the password in the hosts may be changed without
impacting the ability to use password-less ssh.
Password-less SSH is required by FastFabric, MPI test applications and most
versions of MPI (including QuickSilver MPI, OFED openmpi, OFED mvapich, and
OFED mvapich2).
Copy /etc/hosts to all hosts
(Linux) This will run the scpall /etc/hosts /etc/hosts command to copy
the
/etc/hosts file on this host to all the other selected hosts. This is not
necessary when using a DNS server to resolve hostnames for the cluster.
Show uname -a for all hosts
(Linux) This run the cmdall “uname -a” command to show the OS version on
all the hosts. Review the results carefully to verify all the hosts have the expected
OS version. In typical clusters all hosts will be running the same OS and kernel
version.