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Graham: Difference between revisions
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| Availability: In production since June 2017 | | Availability: In production since June 2017 | ||
|- | |- | ||
| Login node: | | Login node: <b>graham.alliancecan.ca</b> | ||
|- | |- | ||
| Globus endpoint: | | Globus endpoint: <b>computecanada#graham-globus</b> | ||
|- | |- | ||
| Data transfer node (rsync, scp, sftp,...): | | Data transfer node (rsync, scp, sftp,...): <b>gra-dtn1.alliancecan.ca</b> | ||
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On or after the | On or after the removal date we will follow up with the contact to confirm if the exception is still required. | ||
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{| class="wikitable sortable" | {| class="wikitable sortable" | ||
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| | | <b>Home space</b><br />133TB total volume || | ||
* Location of home directories. | * Location of home directories. | ||
* Each home directory has a small, fixed [[Storage and file management#Filesystem_quotas_and_policies|quota]]. | * Each home directory has a small, fixed [[Storage and file management#Filesystem_quotas_and_policies|quota]]. | ||
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* Has daily backup. | * Has daily backup. | ||
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| | | <b>Scratch space</b><br />3.2PB total volume<br />Parallel high-performance filesystem || | ||
* For active or temporary (<code>/scratch</code>) storage. | * For active or temporary (<code>/scratch</code>) storage. | ||
* Not allocated. | * Not allocated. | ||
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* Inactive data will be purged. | * Inactive data will be purged. | ||
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| | |<b>Project space</b><br />16PB total volume<br />External persistent storage | ||
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* Allocated via [https://alliancecan.ca/en/services/advanced-research-computing/accessing-resources/rapid-access-service RAS] or [https://alliancecan.ca/en/services/advanced-research-computing/accessing-resources/resource-allocation-competition RAC]. | * Allocated via [https://alliancecan.ca/en/services/advanced-research-computing/accessing-resources/rapid-access-service RAS] or [https://alliancecan.ca/en/services/advanced-research-computing/accessing-resources/resource-allocation-competition RAC]. | ||
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Graham has dedicated visualization nodes available at | Graham has dedicated visualization nodes available at <b>gra-vdi.alliancecan.ca</b> that allow only VNC connections. For instructions on how to use them, see the [[VNC]] page. | ||
=Node characteristics= <!--T:5--> | =Node characteristics= <!--T:5--> | ||
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Best practice for local on-node storage is to use the temporary directory generated by [[Running jobs|Slurm]], < | Best practice for local on-node storage is to use the temporary directory generated by [[Running jobs|Slurm]], <code>$SLURM_TMPDIR</code>. Note that this directory and its contents will disappear upon job completion. | ||
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<b>The nodes are available to all users with a maximum job duration of seven days.</b> | |||
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<b>Important</b>: You should scale the number of CPUs requested, keeping the ratio of CPUs to GPUs at 3.5 or less on 28 core nodes. For example, if you want to run a job using 4 GPUs, you should request <b>at most 14 CPU cores</b>. For a job with 1 GPU, you should request <b>at most 3 CPU cores</b>. Users are allowed to run a few short test jobs (shorter than 1 hour) that break this rule to see how your code performs. | |||
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