Infrastructure renewal
Major upgrade of our Advanced Research Computing infrastructure[edit]
Our Advanced Research Computing infrastructure is undergoing major changes in the winter of 2024-2025 and spring of 2025 to provide better High Performance Computing (HPC) and Cloud services for Canadian researchers. This page will be regularly updated to keep you informed of the activities concerning the transition to the new equipment.
The infrastructure renewal will replace the nearly 80% of our current equipment that is approaching end-of-life. The new equipment will offer faster processing speeds, greater storage capacity, and improved reliability.
New system details[edit]
| New System | Old System to be Replaced | Documentation |
| Arbutus | Cloud (as a virtual infrastructure there is no change to the cloud interface.) | see this page |
| Rorqual | Béluga | see this page |
| Fir | Cedar | see this page |
| Trillium | Niagara & Mist | see this page |
| (TBD) | Graham | Coming Soon |
System capacity, reductions and outages[edit]
During the installation and the transition to the new systems, outages and reductions will be unavoidable due to constraints on space and electrical power. We recommend that you consider the possibility of outages when you plan research programs, graduate examinations, etc.
| Start Time | End Time | Status | System | Type | Description |
| Jan 18, 2025 | Ongoing | Upcoming | Cedar (70%) | Reduction | Starting January 18, Cedar cluster will operate at approximately 70% capacity until Fir is commissioned in the spring of 2025. Cedar cloud will remain operational during this period. |
| Jan 13, 2025 | Jan 17, 2025 (4 days) | Upcoming | Cedar (100%) | Outage | The Cedar compute cluster will be shut down in preparation for the infrastructure renewal. Jobs submitted to the cluster are queued and could start running if they can be completed before shutdown / fit within the allowed timeframe. Jobs that cannot run will stay in the queue until the cluster is fully operational on January 17. The Cedar /scratch filesystem will be migrated to new storage. Please move any important data immediately to your /project, /nearline, or /home directory. Cedar cloud will remain operational during this period. |
| Jan 4, 2025 | Ongoing | Upcoming | Graham (25%) | Reduction | Starting January 4, the Graham cluster will operate at approximately 25% capacity until the new system is expected in March 2025. Users will be restricted to 256 cores per job, and all existing queued jobs will be cleared before the reduction begins. However, all existing user data on /home, /project, and /scratch will remain available. The Graham cloud will return to service at normal capacity on January 4. |
| Jan 6, 2025 | Ongoing | Upcoming | Niagara (50%), Mist (35%) | Reduction | Niagara will operate at 50% capacity and Mist at 35% to support ongoing system improvements and the integration with the new system, Trillium, expected in spring 2025. The reduction will require Mist to be shutdown for a few hours on January 6th. |
| Jan 13, 2025 | Jan 31, 2025 (18 days) | Upcoming | Béluga (100%), Narval (50%) | Temporary Reduction | Performance and stability tests on Rorqual will require the shutdown of all Béluga compute nodes and about half of Narval compute nodes from 8 a.m. on January 13 until 12 p.m. (noon) on January 31, 2025 (EST). Login nodes and data access will remain operational. On Narval, approximately 50% of nodes from each category (CPU, GPU, and large memory) will be shut down. During the shutdown time, Béluga Storage will be mounted to Narval (/lustre01, /lustre02, /lustre03, /lustre04 of Beluga). Béluga and Juno cloud instances are unaffected. Jobs on Béluga scheduled to complete after 8 a.m. on January 13 will remain queued until the cluster resumes. |
| Dec 7, 2024 | Jan 3, 2025 (27 days) | In Progress | Graham (100%) | Outage | Ongoing renovations require a complete data center shutdown from Dec 7, 2024 to Jan 3, 2025. During this time, all Graham cluster services, storage, and cloud services will be entirely unavailable. |
| Completed Events | |||||
| Nov 25, 2024 | Nov 26, 2024 (1 day) | Complete | Niagara | Outage | A full power shutdown will take place for main panel upgrades ahead of Trillium cluster setup. All Niagara services, including the cluster and scheduler, will pause during this time. The scheduler will hold jobs that cannot finish before the start of the shutdown. Users are encouraged to submit smaller, short-duration jobs to optimize idle node usage before the maintenance begins. |
| Nov 7, 2024 | Nov 8, 2024 (1 day) | Complete | Niagara | Outage | All systems and storage at the SciNet Datacenter (Niagara, Mist, HPSS, Rouge, Teach, JupyterHub, Balam) will be unavailable from 7 a.m. to 5 p.m. ET. This outage is necessary for installing new electrical equipment (UPS) as part of a systems refresh. The scheduler will pause jobs unable to finish before the shutdown. Users can prioritize short jobs to utilize otherwise idle nodes prior to maintenance. |
| Nov 7, 2024 6 a.m. PST | Nov 8, 2024 6 a.m. PST | Complete | Cedar | Outage | Cedar compute nodes will be unavailable during this period. However, Cedar login nodes, storage, and cloud services will remain operational and unaffected. |
Resource Allocation Competition (RAC)[edit]
The Resource Allocation Competition will be impacted by this transition, but the application process remains the same.
2024/25 allocations will remain in effect on retiring clusters while each cluster remains in service. The 2025/26 allocations will be implemented everywhere once all new clusters are in service.
Because the old clusters will mostly be out of service before all new ones are available, if you hold both a 2024 and a 2025 RAC award you will experience a period when neither award is available to you. You will be able to compute with your default allocation (def-xxxxxx) on each new cluster as soon as it goes into service, but the 2025 RAC allocations will only become available when all new clusters are in service.
User training resources[edit]
| Course Title | Course Provider | Instructor | Date | Description | Audience | Format | Registration |
| Survival guide for the upcoming GPU upgrades | SHARCNET | Sergey Mashchenko | Wednesday, November 20, 2024, 12:00 PM to 1:00 PM ET | In the coming months, national systems will be undergoing significant upgrades. In particular, older GPUs (P100, V100) will be replaced with the newest H100 GPUs from NVIDIA. The total GPU computing power of the upgraded systems will grow by a factor of 3.5, but the number of GPUs will decrease significantly (from 3200 to 2100). This will present a significant challenge for users, as the usual practice of using a whole GPU for each process or MPI rank will no longer be feasible in most cases. Fortunately, NVIDIA provides two powerful technologies that can be used to mitigate this situation: MPS (Multi-Process Service) and MIG (Multi-Instance GPU). The presentation will walk the audience through both technologies and discuss the ways they can be used on the clusters. The discussion will include how to determine which approach will work best for specific code, and a live demonstration will be given at the end. | Prospective users of the upgraded systems. Users intending to use a substantial amount of H100 resources (e.g., more than one GPU at a time, and/or over 24 hours runtime) | 1-hour presentation and slides | past |
Frequently asked questions[edit]
Will my data be copied to its new system?[edit]
Data migration to the new systems is the responsibility of each National Host Site who will inform you of what you need to do.
When will outages occur?[edit]
Each National Host Site will have its own schedule for outages as the installation of and transition to new equipment proceeds. As usual, specific outages will be described on our system status web page. We will provide more general updates on this wiki page and you will periodically receive emails with updates and outage notices.
Whom can I contact for questions about the transition?[edit]
Contact our technical support. They will try their best to answer any questions they can.
Will my jobs and applications still be able to run on the new system?[edit]
Generally yes, but the new CPUs and GPUs may require recompilation or reconfiguration of some applications. More details will be provided as the transition unfolds.
Will the software from the current systems still be available?[edit]
Yes, our standard software environment will be available on the new systems.
Will commercial, licensed software be migrated to the new systems?[edit]
Yes, the plan is that the current commercial software licenses will be transitioned from an old system to the new replacement so to the extent possible users should see identical access to those special applications (Gaussian, AMS/ADF, etc.). There is a small risk that the software providers will change their licensing terms for the new system. Such issues will be addressed individually as they come up.
Will there be staggered outages?[edit]
We will do our best to limit overlapping outages, but because we are very constrained by delivery schedules and funding deadlines, there will probably be periods when several of our systems are simultaneously offline. Outages will be announced as early as possible.
Can I purchase old hardware after equipment upgrades?[edit]
Most of the equipment is legally the property of the hosting institution. When the equipment is retired, the host institution manages its disposal following that institution's guidelines. This typically involves "e-cycling"--- recycling the equipment rather than selling it. If you're looking to acquire the old hardware, it's best to contact the host institution directly, as they may have specific policies or options for selling equipment.