ASPIRE 2A and ASPIRE 2A+ Scheduled System Maintenance from 3 Dec 2025, 9am to 8 Dec 2025, 1pm

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Dear Users,
 
Please note that the ASPIRE 2A and ASPIRE 2A+ systems will be undergoing a scheduled system maintenance from 3 Dec 2025, 9am to 8 Dec 2025, 1pm​. The scheduled system maintenance is to ensure long term reliability, uptime and stability of the systems. 
 
Do take note of the following dates. 

 

ASPIRE 2A Maintenance activities:
  1. GPFS Storage Upgrade.
  2. ClusterStor (Lustre) Upgrade
  3. PBS Pro Version Upgrade to 2025.2.
  4. Firmware Upgrade
  5. Faulty Hardware Replacement
  6. CDU Maintenance.
  7. System Health Check.
ASPIRE 2A+ Maintenance activities:
  1. Lustre Parallel Filesystem Storage Firmware and Software Update.
  2. Nvidia GPU Driver Update.
  3. PBS Pro Version Upgrade to 2025.2.
  4. System Health Check.

Thank you.

Warm regards,

The NSCC Team

 

ASPIRE 2A+: Expect Longer Wait Times for Large Jobs from 14 Oct 2025, 6:00 PM (SGT)​

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Dear ASPIRE 2A+ Users,

Please note that starting from 14 October 2025 (Tuesday), 6:00 PM (SGT), a project reservation will temporarily reduce the general resource pool in the ASPIRE 2A+ system.

Impact:

  • Large jobs (More than 8 GPUs): Expect longer queue wait times.
  • Small jobs (1–8 GPUs): No impact.

Tips:

  • To reduce delays, please enable checkpointing or pre-emption where possible.
  • Users are encouraged to schedule job runs between 6:00 PM to 10:00 AM to leverage off-peak hours, which may result in shorter queue times.

Thanks for your patience and cooperation. Kindly look out for updates via the MOTD or email announcement if there are any changes to the arrangement.

Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected].

Thank you.

Warm regards,
The NSCC Team

Security Notice: Upgrade NVIDIA Nemo and Framework to the Updated Version

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Dear Users,

 

Multiple high-severity code-injection vulnerabilities have been identified in NVIDIA NeMo Framework and NeMo Curator. If you are using the affected products listed below, please upgrade to the recommended versions by 8 October 2025.

Affected Products

Platform or OS

Affected Versions

Updated Version

NVIDIA NeMo Framework

Windows, Linux, macOS

All versions prior to 2.4.0

2.4.0

NVIDIA NeMo Curator

Windows, Linux, macOS

All versions prior to Curator 25.07

Curator 25.07

For more information on NVIDIA’s security updates, please refer to their official advisories:

 

Please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

 

Thank you.

Warm regards,

The NSCC Team

 

[Resolved] Service Disruption for A*STAR Users Accessing ASPIRE2A and ASPIRE2A+

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Dear A*STAR Users,

We are pleased to inform you that the network issue has been resolved. You may proceed to login to the ASPIRE 2A and 2A+ as per normal.

We apologise for any inconvenience this may cause and thank you for your understanding. Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

Thank you.

Warm regards,

The NSCC Team

 

Service Disruption for A*STAR Users Accessing ASPIRE2A and ASPIRE2A+

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Dear A*STAR Users,

We wish to inform you that there is a service disruption on the network access to ASPIRE 2A and 2A+ system. Our team is diligently investigating the issue and working towards a swift resolution.

Cause of Disruption:

  • Issue with network connectivity between FP1 to NUS

Impact of the Disruption:

  • A*STAR users will not be able to access the ASPIRE 2A and ASPIRE 2A+ systems from the A*STAR network.

We apologise for any inconvenience this may cause and thank you for your understanding. Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

Thank you.

Warm regards,

The NSCC Team

 

[Completed] A*STAR ExaNet Network Maintenance Affecting ASPIRE 2A and ASPIRE 2A+ on 14 August 2025, from 6.30 PM to 11.30 PM​

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Dear A*STAR Users,
 
We are pleased to announce that the A*STAR ExaNet network maintenance has been completed. You may proceed to use the systems as per usual.
 
Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected].
 
Thank you for your understanding and patience.
 
Warm regards,
The NSCC Team
Dear A*STAR Users,

We wish to inform you of an upcoming A*STAR ExaNet network maintenance on 14 August 2025 (Thursday), from 6.30 PM to 11.30 PM. All access to the ASPIRE 2A and ASPIRE 2A+ systems from the A*STAR network will be affected.
 
Maintenance Details:
  • Start: 14 August 2025 (Thursday), 6.30 PM SGT
  • End: 14 August 2025 (Thursday), 11.30 PM SGT

Purpose:
  • Maintenance of the A*STAR ExaNet network.
Impact During the Maintenance Period:
  • During this period, users will not be able to access the ASPIRE 2A and ASPIRE 2A+ systems from the A*STAR network.

Please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

Thank you.

Warm regards,
The NSCC Team

Upcoming Update to A*STAR User Email Addresses in NSCC HPC System – Starting 14 June 2025

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Dear A*STAR Users,
 
We would like to inform you about an important upcoming change regarding your user email information in NSCC HPC system in alignment of A*STAR Email Domain Migration.
 
Following the A*STAR planned email domain change, we will be updating all A*STAR user email addresses stored in our user database to reflect the new domain. This update will be performed on your behalf, and no action is required from your side for the change itself.
 
Key Details:
  • Implementation Start Date: Saturday, 14 June 2025, at 10:00 AM
  • Impact: A*STAR user email addresses in the HPC system will be updated to match the new email domain.
  • Rollout Plan: Updates will be implemented according to A*STAR Email Domain Migration batches.

What You Need to Know:
  • You will receive a notification once your email address has been successfully updated as part of your assigned batch.
  • A self-check mechanism will be made available so you can verify your updated email information in the HPC system.
  • If you encounter any issues after the update (e.g., incorrect email address) or expecting any exceptions for the update, please contact our helpdesk for prompt assistance.
 
We appreciate your cooperation and understanding as we work to ensure a smooth transition.
 
Please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.
 
Thank you.
 
Warm regards,
The NSCC Team

[Completed] ASPIRE 2A and ASPIRE 2A+ Scheduled System Maintenance from 29 May 2025, 1pm to 2 Jun 2025, 1pm

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Dear ASPIRE 2A+ Users,
 
We are pleased to announce that the ASPIRE 2A+ scheduled system maintenance has been completed. You may proceed to use the systems as per usual.
 
Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected].
 
Thank you for your understanding and patience.
 
Warm regards,
The NSCC Team

Dear ASPIRE 2A+ Users,
 
As additional time is needed to verify system stability, please be informed that the scheduled maintenance for the ASPIRE 2A+ system has been extended to 2 June 2025 (Monday), 5:00 PM (SGT).
 
If you have any questions, please contact our Helpdesk via the Service Desk Portal or email us at [email protected].
 
We appreciate your understanding and patience during this essential maintenance. These updates are part of our ongoing efforts to enhance your experience and ensure the highest level of security.
 
Warm regards,
The NSCC Team
 
Dear Users,
 
Please note that the ASPIRE 2A and ASPIRE 2A+ systems will be undergoing a scheduled system maintenance from 29 May 2025, 1pm to 2 June 2025, 1pm​. The scheduled system maintenance is to ensure long term reliability, uptime and stability of the systems. 
 
Do take note of the following dates. 

ASPIRE 2A Maintenance activities:
  1. GPFS Storage Upgrade.
  2. PBS Pro Version Upgrade to 2025.2.
  3. Faulty Hardware Replacement.
  4. CDU Coolant Maintenance.
  5. Bug Fixes on the Utility Tools.
  6. System Health Check.
ASPIRE 2A+ Maintenance activities:
  1. Lustre Parallel Filesystem Storage Firmware Update.
  2. DCGMI Permission Change.
  3. Nvidia GPU Driver Patch.
  4. Hardware Firmware Upgrade
  5. PBS Pro Version Upgrade to 2025.2.
  6. System Health Check.

Thank you.

Warm regards,

The NSCC Team

 

Changes to the ASPIRE 2A+ System from 2 Jun 2025

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Dear ASPIRE2A+ Users,
 
We would like to inform you of upcoming changes to the ASPIRE 2A+ system, effective 2 June 2025. These updates are part of our ongoing efforts to improve resource management, performance monitoring, and user experience.
 
What’s Changing?
 
1.PBS Queue Structure Update
Starting 2 June 2025, all jobs submitted to the normal queue will be automatically routed to one of the following new queues based on the job’s characteristics:
  • aidev Queue – For development and interactive workloads
    • Max Walltime: 12 hours
    • GPU Limit: Up to 8 GPUs
    • Ideal for: Testing, debugging, and short interactive sessions.
  • aiq1 Queue – For small batch jobs
    • Max Walltime: 24 hours
    • GPU Limit: Up to 7 GPUs
    • Ideal for: Short production runs and low-GPU batch jobs.
  • aiq2 Queue – For large batch jobs
    • Max Walltime: 120 hours (5 days)
    • GPU Requirement: Minimum of 8 GPUs
    • Ideal for: Long-running, resource-intensive jobs.
 
What You Need to Do:
Continue submitting jobs to the normal queue as usual. The system will automatically route your job to the appropriate queue based on the requested GPU count and walltime. We encourage reviewing your job scripts to ensure that they align with the new queue definitions.
 
2.Change in dcgmi Access Permissions
From 2 June 2025, the dcgmi (NVIDIA Data Center GPU Manager) tool will no longer be executable by regular users.
 
 
This change is necessary to ensure the accuracy of system-wide, system-level GPU performance monitoring. If your workflows rely on dcgmi, please contact the our Helpdesk for alternative solutions or assistance.
 
Summary of Actions
  1. Review and adjust your job scripts to align with the new queue definitions.
  2. Avoid using dcgmi in user applications or scripts.
  3. Reach out to the Helpdesk if you need help adapting to these changes.
 
Please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.
 
Thank you.
 
Warm regards,
The NSCC Team

[Follow-up for NSCC VPN Users] Update to NSCC VPN Server URL – Effective from 9 May 2025, 6:00 PM

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Dear NSCC Users,
 
Please be informed that the NSCC VPN server URL for accessing NSCC services has been updated.
 
New VPN Server URL: vpn1.nscc.sg
Effective Date and Time: 9 May 2025, 6:00 PM
 
We advise all users to update their VPN configuration to use the new URL as soon as possible to ensure smooth access to NSCC resources. The previous VPN server URL will be phased out soon.
 
For assistance with updating your VPN settings, please refer to the relevant guide below:
 
Alternatively, you may contact the NSCC Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.
 
Thank you for your attention and cooperation.
 
Warm regards,
The NSCC Team