NSCC ASPIRE 2A SSH

Workflow

Use the bundled setup script for deterministic local configuration:

bash scripts/setup_nscc_aspire2a_ssh.sh

The script prompts for the NSCC user ID and private key, writes the key to ~/.ssh/nscc_aspire2a, generates the .pub file, and installs a global SSH config block for:

ssh aspire2a
scp file.py aspire2a:~/CoLLM/
rsync -av ./ aspire2a:~/openonerec/

For scripted use:

bash scripts/setup_nscc_aspire2a_ssh.sh e1538xxx /path/to/private_key

Defaults

• Login node: aspire2a.nus.edu.sg
• SSH aliases: aspire2a and nscc
• SSH key file: ~/.ssh/nscc_aspire2a
• Config block marker: # >>> nscc-aspire2a-ssh
• Off-campus NUS users must connect NUS VPN before SSH.

Validation

After configuration, check:

ssh -G aspire2a | grep -E '^(user|hostname|identityfile|identitiesonly) '
route -n get aspire2a.nus.edu.sg
nc -vz -G 5 aspire2a.nus.edu.sg 22
ssh aspire2a

On Linux, replace the nc -G 5 timeout flag with nc -w 5.

HPC Flow

Once logged into the ASPIRE 2A login node:

qsub -I \
  -P personal-e1538xxx \
  -q normal \
  -l select=1:ngpus=2:ncpus=32:mem=110gb \
  -l walltime=01:00:00

Then activate the project environment and monitor jobs:

source ~/collmenv/bin/activate
cd ~/CoLLM
qstat -u "$USER"
tail -100 stage1_dpo_v2.out

References

Read references/classmate-quickstart.md when preparing a message for classmates or explaining the setup in human-friendly terms.