Login Nodes
This reference page provides information about the access points to the CLAIX Cluster.
Table of Contents
| Login Node | Recommended Usage | Remarks | Hardware Specifications |
|---|---|---|---|
login23-1.hpc.itc.rwth-aachen.de | General use | Same architecture | 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 | Runs FastX webserver Architecture and | 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 Has GPUs | 540 GB memory 4x NVIDIA H100 |
copy23-1.hpc.itc.rwth-aachen.de | File transfer | High network speed No x-server No job management No module system | 2 x Intel Xeon 8360Y 134 GB memory 2 x 100 GBit/s network |
copy23-2.hpc.itc.rwth-aachen.de |
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 30 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.
The GPUs on the login23-g-1 node are configured in the following way:
| GPU-Number | nvidia-smi Information | Operation |
|---|---|---|
| 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. |
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
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)
