Editing HPC High Processing Cluster in BITS PILANI (section)

==<center>'''ARCHITECTURE DETAILS'''</center>==

* They have two IBM servers and nine Sunfire servers.
* On two IBM servers have installed HPC 2- Node Cluster, High Availability over NFS and multimaster LDAP.
* All home directories are stored in these two ibm servers have separate HDD and they don’t have SAN , So need to rsync home directories from one to another IBM Server.
* Other nine Sunfire servers have HPC-9 Node cluster Installed.
* All sunfire servers are LDAP Client and NFS Client
* HPC 2- Node cluster uses only two home directories /staff and /projects have GID is 501 and 502 and permission is 770 because of group of members access this directory from another user as well.
* HPC 9-Node cluster uses another two home directories that is mounted in all 9 machines /ugassignmnets and /pgassignments have GID is 503 and 504 and permission is 770 because of group of members access this directory from another user as well.
* LDAP have four different OU’s for these distribution of users according GID wise.
* Members of staff and projects can’t able to use sunfire systems because GID is mismatched.
* Once if you want to run application by mpi mode then first you need to login from ldap user then switch to wolf/lam user on 2-Node IBM HPC or wolf2/lam1 user on 9-Node sunfire HPC accordingly.
* All binaries like cadence,mentor,etc. are stored in /linuxeda on all 11 servers.
* All clients are use VNC as well as Sunray.
* VNC Server are installed in all 11 servers.
* Both master node handle ganglia for hpc monitoring [http://172.20.4.25/ganglia http://172.20.4.25/ganglia] and [http://172.20.4.39/ganglia http://172.20.4.39/ganglia]
* Script is running for syncing home directories in every 4 hours located at on 172.20.4.39 “/root/script/homedir.sh”
* Ldap user add script is located at on both servers under “/root/script/”, by default password is “user123”.