--- external network --+------------+
| |
port 222 port 22 (ssh)
| |
v |
+-------------------------+ |
| sage.zam.kfa-juelich.de | |
+-------------------------+ |
|
+---------------------------+
|
v
+--------------+
| sage-loginvm |
+--------------+
|
| +----------------+
+---->| sage-client-gc |
| +----------------+
|
| +----------------+
+---->| sage-server-gc |
| +----------------+
|
| +------------------+
+---->| sage-tier2-[1-4] |
| +------------------+
|
| +------------------+
+---->| sage-tier3-[1-2] |
| +------------------+
|
| +------------------+
+---->| sage-tier4-[1-2] |
| +------------------+
|
| +----------------+
+---->| client-[21-28] |
| +----------------+
|
| +------------------+
+---->| datawarp-[01-04] |
| +------------------+
|
| +-----------------+
+---->| visnode-[01-04] |
+-----------------+
There are two kind of accounts: normal user accounts (<name><number>, e.g. mustermann1 and admin accounts (<initial><name>, e.g. gmustermann).
Please use the user accounts preferably to do the benchmarking etc. work which do not require privileges. Use the admin accounts only if your privilege doesn't suffice to do the required work. Please be careful, we trust you know what you're doing.
To log into the system, please use
ssh -l <username> sage.zam.kfa-juelich.de
This will land you on the sage-loginvm. This is a virtual machine with 4 CPUs and 16 GB of memory. From there, you can use ssh to go to other machines in the cluster.
Please find out about the current disk configuration by logging into the nodes and running lsblk.
The list of server nodes is the following:
sage-tier2-[1-4]: 128 GB memory, 24 cores (except sage-tier2-3 with only 16 cores.
sage-tier3-[1-2]: 128 GB memory, 16 cores
sage-tier4-[1-2]: 128 GB memory, 16 cores on -1, 24 cores on -2
The list of client nodes is the following:
client-[21-28]: 16 GB memory, 8 cores
datawarp-[01-04]: 128 GB, 28 cores
visnode-[01-04]: 128 GB, 28 cores
All nodes are connected via a 1G Ethernet
Server and client nodes are connect by an infinband fabric