Login Nodes, DTN node and Usage
This page describes the purpose and usage of login nodes and the data transfer node (DTN) on the Lipscomb Compute Cluster (LCC).
Login Nodes Overview
LCC has six login nodes that provide access to the cluster environment for:
editing job scripts
compiling programs
submitting jobs
managing files
Login nodes are not intended for running computational jobs or performing large data transfers.
Login Node Specifications
Intel Processor Number | Processor Class | Cores per Node | Nodes in Cluster | Memory per Node (GB) | Network |
|---|---|---|---|---|---|
E5-2670 | Haswell | 24 | 6 | 128 | InfiniBand EDR (100 Gbps) |
Acceptable Usage
You may use login nodes for:
logging into the cluster
preparing and submitting SLURM job scripts
compiling software
light file management tasks
Prohibited Usage
Do not run computational jobs or I/O-intensive processes on login nodes.
All compute workloads must be submitted using the SLURM batch scheduler.
Repeated misuse of login nodes may result in account suspension.
Connecting to Login Nodes
The standard hostname for accessing LCC login nodes is:
lcc.uky.eduConnections are distributed across login nodes using round-robin DNS.
If a login node becomes unavailable, you may receive a connection error even though other nodes are operational. In this case:
try reconnecting
or connect directly to an individual login node
Individual Login Node Hostnames
IP Address | Login Node Hostname |
|---|---|
10.33.41.42 |
|
10.33.41.43 |
|
10.33.41.44 |
|
10.33.41.45 |
|
10.33.41.46 |
|
10.33.41.47 |
|
Data Transfer Node (DTN)
LCC provides a dedicated data transfer node (DTN) for large data movement.
Hostname:
dtn.ccs.uky.eduLogin nodes are connected to a slower network and should not be used for transferring large datasets.
Users should perform all large data transfers through the DTN, which is connected to a high-speed network.