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(Created page with "==Monitoring jobs== To maximize the use of resources and reduce your waiting times in the queue, you can monitor your CPU and GPU past or current compute tasks in real time in the [https://portail.beluga.calculquebec.ca/ portal].")
 
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| Availability : March, 2019
| Availability : March, 2019
|-
|-
| Login node : '''beluga.computecanada.ca'''
| Login node : '''beluga.alliancecan.ca'''
|-
|-
| Globus Endpoint : '''computecanada#beluga-dtn'''
| Globus Endpoint : '''[https://app.globus.org/file-manager?origin_id=278b9bfe-24da-11e9-9fa2-0a06afd4a22e computecanada#beluga-dtn]'''
|-
|-
| Data Transfer Node (rsync, scp, sftp,...) : '''beluga.computecanada.ca'''
| Data Transfer Node (rsync, scp, sftp,...) : '''beluga.alliancecan.ca'''
|-
| Portal : https://portail.beluga.calculquebec.ca/
|}
|}


Béluga is a general purpose cluster designed for a variety of workloads and situated at the [http://www.etsmtl.ca/ École de technologie supérieure] in Montreal. The cluster is named in honour of the St. Lawrence River's [https://en.wikipedia.org/wiki/Beluga_whale Beluga whale] population.
Béluga is a general purpose cluster designed for a variety of workloads and situated at the [http://www.etsmtl.ca/ École de technologie supérieure] in Montreal. The cluster is named in honour of the St. Lawrence River's [https://en.wikipedia.org/wiki/Beluga_whale Beluga whale] population.


=Site-specific Policies=
=Site-specific policies=
By policy, Béluga's compute nodes cannot access the internet. If you need an exception to this rule, contact [[Technical_support|technical support]] with information about the IP address, port number(s) and protocol(s) needed as well as the duration and a contact person.  
By policy, Béluga's compute nodes cannot access the internet. If you need an exception to this rule, contact [[Technical_support|technical support]] explaining what you need and why.  


Crontab is not offered on Béluga.
Crontab is not offered on Béluga.


Each job on Béluga should have a duration of at least one hour and a user cannot have more than 1000 jobs, running and queued, at any given moment.
Each job on Béluga should have a duration of at least one hour (five minutes for test jobs) and a user cannot have more than 1000 jobs, running and queued, at any given moment. The maximum duration for a job on Béluga is 7 days (168 hours).


=Storage=
==Storage==


{| class="wikitable sortable"
{| class="wikitable sortable"
|-
|-
| HOME <br> Système de fichiers Lustre, 105 To d’espace au total ||  
| HOME <br> Lustre filesystem, 105 TB of space ||  
*Cet espace est petit et ne peut pas être agrandi : vous devrez utiliser votre espace <code>project</code> pour les grands besoins en stockage.
*Location of home directories, each of which has a small fixed quota.
*You should use the <code>project</code> space for larger storage needs.


*50 Go d’espace et 500K fichiers par utilisateur.
*Small fixed [[Storage_and_file_management#Filesystem_quotas_and_policies|quota]] per user.


*Il y a une sauvegarde automatique une fois par jour.
*There is a daily backup of the home directories.
|-
|-
| SCRATCH <br> Système de fichiers Lustre, 2.6 Po d’espace au total ||
| SCRATCH <br> Lustre filesystem, 2.6 PB of space ||


*Grand espace pour stocker les fichiers temporaires pendant les calculs.
*Large space for storing temporary files during computations.
* Pas de système de sauvegarde automatique.  
*No backup system in place.  


*20 To d’espace et 1M fichiers par utilisateur.  
*Large fixed [[Storage_and_file_management#Filesystem_quotas_and_policies|quota]] per user.


*Il y a une [[Scratch_purging_policy/fr | purge automatique]] des vieux fichiers de cet espace.
*There is an [[Scratch_purging_policy | automated purge]] of older files in this space.  
|-
|-
| PROJECT <br> Système de fichiers Lustre, 8.9 Po d’espace au total ||
| PROJECT <br> Lustre filesystem, 25 PB of space ||


*Cet espace est conçu pour le partage de données entre membres d'un groupe et pour le stockage de beaucoup de données.  
*This space is designed for sharing data among the members of a research group and for storing large amounts of data.  


*1 To d’espace et 500K fichiers par groupe.  
*Large adjustable [[Storage_and_file_management#Filesystem_quotas_and_policies|quota]] per group.


*Il y a une sauvegarde automatique une fois par jour.
*There is a daily backup of the project space.
|}
|}


Pour les transferts de données par Globus, on devrait utiliser le point de chute <code>computecanada#beluga-dtn</code>, alors que pour les outils comme rsync et scp, on peut utiliser un nœud
For transferring data via Globus, you should use the endpoint <code>computecanada#beluga-dtn</code>, while for tools like rsync and scp you can use a login node.
de connexion.


=Réseautique haute performance=
==High-performance interconnect==


Le réseau Infiniband EDR (100 Gb/s) de Mellanox relie tous les nœuds de la grappe. Un commutateur central de 324 ports rassemble les connexions des îlots avec un facteur de blocage maximum de 5:1. Les serveurs de stockage sont branchés avec une interconnexion non bloquante. L’architecture permet de multiples tâches parallèles avec jusqu’à 640 cœurs (voire plus) grâce à une réseautique non bloquante. Pour les tâches plus imposantes, le facteur de blocage est de 5:1; même pour les tâches exécutées sur plusieurs îlots, l’interconnexion est de haute performance.
A Mellanox Infiniband EDR (100 Gb/s) network connects together all the nodes of the cluster. A central switch of 324 ports links the cluster's island topology with a maximum blocking factor of 5:1. The storage servers are networked with a non-blocking connection. The architecture permits multiple parallel jobs with up to 640 cores (or more) thanks to a non-blocking network. For jobs requiring greater parallelism, the blocking factor is 5:1 but even for jobs executed across several islands, the interconnection is high-performance.


=Types et caractéristiques des nœuds=
==Node characteristics==
Turbo mode is activated on all compute nodes of Béluga.


{| class="wikitable sortable"
{| class="wikitable sortable"
! Nombre !! Type !! Cœurs !! Mémoire !! Matériel
! nodes !! cores !! available memory !! CPU !! storage !! GPU
|-
| 160 || 40 ||  92G or  95000M || 2 x Intel Gold 6148 Skylake @ 2.4 GHz || 1 x SSD 480G || -
|-
| 579 || rowspan="2"|40 || rowspan="2"|186G or 191000M || rowspan="2"|2 x Intel Gold 6148 Skylake @ 2.4 GHz || 1 x SSD 480G || rowspan="2"|-
|-
|-
| 172 || ''small'' 96G || 40 || 93G ou 96000M || deux Intel Gold 6148 Skylake à 2.4 GHz; SSD de 480Go à 6Gbps
| 10 || 6 x SSD 480G
|-
|-
| 516 || ''base'' 192G || 40 || 187G ou 192000M || mêmes que ''small''
| 51 || rowspan="2"|40 || rowspan="2"|752G or 771000M || rowspan="2"|2 x Intel Gold 6148 Skylake @ 2.4 GHz || 1 x SSD 480G || rowspan="2"|-
|-
|-
| 12 || ''large'' 768G || 40 || 750G ou 768000M || mêmes que ''small''
| 2 || 6 x SSD 480G
|-
|-
| 172 || ''GPU'' || 40 || 187G ou 192000M || mêmes que ''small'', mais quatre GPU NVIDIA V100 Volta (SXM2, mémoire de 16 Go HBM2), SSD NVMe de 1.6 To
| 172 || 40 || 186G or 191000M ||2 x Intel Gold 6148 Skylake @ 2.4 GHz || 1 x NVMe SSD 1.6T || 4 x NVidia V100SXM2 (16G memory), connected via NVLink
|}
|}
* To get a larger <code>$SLURM_TMPDIR</code> space, a job can be submitted with <code>--tmp=xG</code>, where <code>x</code> is a value between 350 and 2490.
==Monitoring jobs==
To maximize the use of resources and reduce your waiting times in the queue, you can monitor your CPU and GPU past or current compute tasks in real time in the [https://portail.beluga.calculquebec.ca/ portal].
For each job you can monitor
* the use of compute cores,
* the use of memory,
* the use of GPUs.
When compute resources are little or not used at all, it is important to use the allocated resources and to adjust your requests.
For example, if you request four cores (CPUs) but only use one, you must adjust your submission file accordingly.

Latest revision as of 19:17, 30 September 2024

Other languages:
Availability : March, 2019
Login node : beluga.alliancecan.ca
Globus Endpoint : computecanada#beluga-dtn
Data Transfer Node (rsync, scp, sftp,...) : beluga.alliancecan.ca
Portal : https://portail.beluga.calculquebec.ca/

Béluga is a general purpose cluster designed for a variety of workloads and situated at the École de technologie supérieure in Montreal. The cluster is named in honour of the St. Lawrence River's Beluga whale population.

Site-specific policies

By policy, Béluga's compute nodes cannot access the internet. If you need an exception to this rule, contact technical support explaining what you need and why.

Crontab is not offered on Béluga.

Each job on Béluga should have a duration of at least one hour (five minutes for test jobs) and a user cannot have more than 1000 jobs, running and queued, at any given moment. The maximum duration for a job on Béluga is 7 days (168 hours).

Storage

HOME
Lustre filesystem, 105 TB of space
  • Location of home directories, each of which has a small fixed quota.
  • You should use the project space for larger storage needs.
  • Small fixed quota per user.
  • There is a daily backup of the home directories.
SCRATCH
Lustre filesystem, 2.6 PB of space
  • Large space for storing temporary files during computations.
  • No backup system in place.
  • Large fixed quota per user.
PROJECT
Lustre filesystem, 25 PB of space
  • This space is designed for sharing data among the members of a research group and for storing large amounts of data.
  • Large adjustable quota per group.
  • There is a daily backup of the project space.

For transferring data via Globus, you should use the endpoint computecanada#beluga-dtn, while for tools like rsync and scp you can use a login node.

High-performance interconnect

A Mellanox Infiniband EDR (100 Gb/s) network connects together all the nodes of the cluster. A central switch of 324 ports links the cluster's island topology with a maximum blocking factor of 5:1. The storage servers are networked with a non-blocking connection. The architecture permits multiple parallel jobs with up to 640 cores (or more) thanks to a non-blocking network. For jobs requiring greater parallelism, the blocking factor is 5:1 but even for jobs executed across several islands, the interconnection is high-performance.

Node characteristics

Turbo mode is activated on all compute nodes of Béluga.

nodes cores available memory CPU storage GPU
160 40 92G or 95000M 2 x Intel Gold 6148 Skylake @ 2.4 GHz 1 x SSD 480G -
579 40 186G or 191000M 2 x Intel Gold 6148 Skylake @ 2.4 GHz 1 x SSD 480G -
10 6 x SSD 480G
51 40 752G or 771000M 2 x Intel Gold 6148 Skylake @ 2.4 GHz 1 x SSD 480G -
2 6 x SSD 480G
172 40 186G or 191000M 2 x Intel Gold 6148 Skylake @ 2.4 GHz 1 x NVMe SSD 1.6T 4 x NVidia V100SXM2 (16G memory), connected via NVLink
  • To get a larger $SLURM_TMPDIR space, a job can be submitted with --tmp=xG, where x is a value between 350 and 2490.

Monitoring jobs

To maximize the use of resources and reduce your waiting times in the queue, you can monitor your CPU and GPU past or current compute tasks in real time in the portal.

For each job you can monitor

  • the use of compute cores,
  • the use of memory,
  • the use of GPUs.

When compute resources are little or not used at all, it is important to use the allocated resources and to adjust your requests. For example, if you request four cores (CPUs) but only use one, you must adjust your submission file accordingly.

Globus is a file transfer service

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