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Login Nodes

Login Nodes

This reference page provides information about the access points to the CLAIX Cluster.

Table of Contents

  1. Overview
  2. Usage Limitations
  3. GPU Configurations
  4. Active SSH Ciphers
  5. Fingerprints
  6. See Also

Overview

Login NodeRecommended UsageUnique FeaturesHardware Specifications
login23-1.hpc.itc.rwth-aachen.deGeneral use

Same architecture
as computing nodes

2x Intel Xeon 8468

540 GB memory

login23-2.hpc.itc.rwth-aachen.de

General use

Development

login23-3.hpc.itc.rwth-aachen.de
login23-4.hpc.itc.rwth-aachen.de
login23-x-1.hpc.itc.rwth-aachen.de

General use

Remote desktop

FastX webserver

2 x Intel Xeon 8360Y

540 GB memory

login23-x-2.hpc.itc.rwth-aachen.de
login23-g-1.hpc.itc.rwth-aachen.de

Development

Testing

Same architecture
as computing nodes

GPUs

2x Intel Xeon 8468

540 GB memory

4x NVIDIA H100

copy23-1.hpc.itc.rwth-aachen.deFile transfer

High network speed

No x-server

No job management

2 x Intel Xeon 8360Y

134 GB memory

2 x 100 GBit/s network

copy23-2.hpc.itc.rwth-aachen.de
 

Usage Limitations

The login-nodes are not intended for heavy workloads. The following usage limitations apply:

  • CPU Cores: Each user is permitted to use up to 4 CPU cores.
  • Workload: Processes that use significant CPU resources for more than 20 minutes may get cancelled without prior warning.
  • Memory: Each user's processes can collectively utilize up to 25% of the total available memory on a node. If this memory limit is reached, the process consuming the most memory will be terminated immediately without prior warning.
  • GPU Usage: GPU access is restricted to 10 minutes per process. Processes exceeding this time limit will be automatically cancelled.
  • Scheduled Reboots: For maintenance and optimal performance, all login nodes are rebooted weekly on Monday mornings at 6:00 AM. This excludes the copy23-1 and copy23-2 nodes.

GPU Configurations

The GPUs on the login23-g-1 node are configured in the following way:

GPU-Numbernvidia-smi InformationOperation
0

Compute M.: Default

MIG M.: Disabled

Shared among users.

1

Compute M.: Default

MIG M.: Disabled

Shared among users.

2

Compute M.: E. Process

MIG M.: Enabled

GPU is configured with 7 MIG-instances.
Instances are exclusive to one processes
3

Compute M.: E. Process

MIG M.: Disabled

Exclusive to one process.

Active SSH Ciphers

Only these ciphers are active for security reasons:

gss-curve25519-sha256- gss-group16-sha512- gss-group14-sha256- gss-nistp256-aes256-gcm@openssh.com
aes128-gcm@openssh.com aes256-ctr aes192-ctr aes128-ctrmacs hmac-sha2-512
hmac-sha2-256 umac-128@openssh.com curve25519-sha256 curve25519-sha256@libssh.org diffie-hellman-group18-sha512
diffie-hellman-group16-sha512 diffie-hellman-group-exchange-sha256 diffie-hellman-group14-sha256 ecdh-sha2-nistp521
ecdh-sha2-nistp384 ecdh-sha2-nistp256

Fingerprints

256 SHA256:gFM+j4hYW3gA691bEkPx2VHJP4pvIUmexry7PbMFXUc login23-1.hpc.itc.rwth-aachen.de (ECDSA)
2048 SHA256:cwztAW+xPte9zdi1yaw8Vr+B8O34YpZg5qpw0YolJpY login23-1.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:YIuc1gYlVbtRUbi6grM+PWEO4syDQj3Yc7nTHJJiKpc login23-1.hpc.itc.rwth-aachen.de (ED25519)

256 SHA256:m6bdDvHwAbqaBStL5AYX6hTe/5+Dg0OpMTVvOuoCPn4 login23-2.hpc.itc.rwth-aachen.de (ECDSA)
2048 SHA256:9yNGdvjmjcnu+mCs7sC8U2eK70NOXW1bYvK2Rvxuw08 login23-2.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:QpT89XHlU3hxEPPDnxgRJssxkLgSaTUrqGAK+KFw45Y login23-2.hpc.itc.rwth-aachen.de (ED25519)

2048 SHA256:iP2/oDvbG+HnUYeuV1yIhfd7DGe0UlB5ouO0lFS8zVY login23-3.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:Z+RpUTUJXlRJxIY12fZHYmb5xW32HcRYlrGgS4JjSAA login23-3.hpc.itc.rwth-aachen.de (ECDSA)
256 SHA256:aFne0qQG0l5syjVdTeuKzDUtiJDX9dqkFUUear/SVdM login23-3.hpc.itc.rwth-aachen.de (ED25519)

2048 SHA256:pFWZVLIhQVAlq/e02IvDT1pg3BMiLZZbYGsOVDxq1yI login23-4.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:NJQ3gW7x8XCgq+s3M546VV7rIdr7mOiRSB70zk6XMVc login23-4.hpc.itc.rwth-aachen.de (ECDSA)
256 SHA256:wQmtfXVAp1I2tuBLYJqDZR9/SLEqeOBtx7y3pWjpkKI login23-4.hpc.itc.rwth-aachen.de (ED25519)

256 SHA256:3ahkoITxDFw6J8WBNB+NFlBqmQLOPBxSM1PMrg8/KO0 login23-x-1.hpc.itc.rwth-aachen.de (ECDSA)
2048 SHA256:Gv+6Cgu/TOeYHf7K+Sx1JN/Fn4aXuF55Zann6jhC30c login23-x-1.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:kawpIuJwOV8GSjg/lKHOLoBWoqbzC2meX94Pa+yc9es login23-x-1.hpc.itc.rwth-aachen.de (ED25519)

2048 SHA256:j2qz6b2ijKmekA1EiFQDjdCpfdeCVZ2GIudxUdKgWY0 login23-x-2.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:AYpaRnHJ8mw2f9ccCorcJ5fpTNjsZLlf0LwTCeln+Fo login23-x-2.hpc.itc.rwth-aachen.de (ECDSA)
256 SHA256:uonxQRBD8bLNt008xZjlT8xUJQBAdBX8IyvVv7ZkX5E login23-x-2.hpc.itc.rwth-aachen.de (ED25519)

256 SHA256:LxHcXNL7PdfQg0Bt/Azd1lbm2NBoYy7NNmhtPMVevHA login23-g-1.hpc.itc.rwth-aachen.de (ECDSA)
2048 SHA256:aktDeJFi5A56LpMQaMkvSHFcnu8L4FxMoCYci4HXmH0 login23-g-1.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:v+Fn6DNiNFK5KP4f+IZ9DBrJN5xYvN0ZAfjqLw/8pks login23-g-1.hpc.itc.rwth-aachen.de (ED25519)

2048 SHA256:rhn5pEVUtbivsKVMTvY41YbbJGlIbhuL+6lB6Jp6xhw copy23-1.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:tcieZUsKpBqoxCNzCt19bkU2Cv7/s9Z2RdGRpSlpOg0 copy23-1.hpc.itc.rwth-aachen.de (ECDSA)
256 SHA256:6543oxUxbF85l9ik3wj6JrA2en6o2UMGiSKj1SQIrE4 copy23-1.hpc.itc.rwth-aachen.de (ED25519)

256 SHA256:/Xdv9dfHvmY3LGzzKBfQZjWkR0/7PKAGNGdMr9GQZpw copy23-2.hpc.itc.rwth-aachen.de (ECDSA)
2048 SHA256:n8xyiDXnyY3Fq25fuMRczpdwL330Zpa/EOFDVloI3n4 copy23-2.hpc.itc.rwth-aachen.de (RSA)
256 SHA256:eRH/ZoZ6t5A7tVcH8RHPX2ymjX78o08TVRkGflpUquw copy23-2.hpc.itc.rwth-aachen.de (ED25519)


See also

last changed on 06/18/2024

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