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Niagara: Difference between revisions
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The user experience on Niagara will be similar to that on Graham | The user experience on Niagara will be similar to that on Graham | ||
and Cedar, but slightly different. | and Cedar, but slightly different. | ||
For specific instructions cfor Niagara, see [[Niagara Quickstart]]. | |||
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Niagara is an allocatable resource in the 2018 [https://www.computecanada.ca/research-portal/accessing-resources/resource-allocation-competitions/ Resource Allocation Competition] (RAC 2018), which | Niagara is an allocatable resource in the 2018 [https://www.computecanada.ca/research-portal/accessing-resources/resource-allocation-competitions/ Resource Allocation Competition] (RAC 2018), which has come into effect on April 4, 2018. | ||
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[https://www.youtube.com/watch?v=RgSvGGzTeoc Niagara installation time-lag video] | [https://www.youtube.com/watch?v=RgSvGGzTeoc Niagara installation time-lag video] | ||
=Niagara hardware specifications= <!--T:3--> | =Niagara hardware specifications= <!--T:3--> | ||
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The Niagara cluster | The Niagara cluster uses the [[Running jobs|Slurm]] scheduler to run jobs. The basic scheduling commands are therefore similar to those for Cedar and Graham, with a few differences: | ||
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* Scheduling | * Scheduling is by node only. This means jobs always need to use multiples of 40 cores per job. | ||
* Asking for specific amounts of memory | * Asking for specific amounts of memory is not be necessary and is discouraged; all nodes have the same amount of memory (202GB/188GiB minus some operating system overhead). | ||
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* Module-based software stack. | * Module-based software stack. | ||
* Both the standard Compute Canada software stack as well as cluster-specific software tuned for Niagara | * Both the standard Compute Canada software stack as well as cluster-specific software tuned for Niagara are available. | ||
* In contrast with Cedar and Graham, no modules | * In contrast with Cedar and Graham, no modules are loaded by default to prevent accidental conflicts in versions. To load the software stack that a user would see on Graham and Cedar, one can load the "CCEnv" module (see [[Niagara Quickstart]]). | ||
= Migration to Niagara = | = Access and Migration to Niagara = | ||
== Migration for Existing Users of | == Migration for Existing Users of SciNet Systems == | ||
* Accounts, $HOME & $PROJECT of active GPC users transferred to Niagara (except dot-files in ~). | * Accounts, $HOME & $PROJECT of active GPC users have been transferred to Niagara (except dot-files in ~). | ||
* Data stored in $SCRATCH will not be transfered automatically. | * Data stored in $SCRATCH has not been, and will not be, transfered automatically. | ||
* Users are to clean up $SCRATCH on the GPC as much as possible (remember it's temporary data!). Then they can transfer what they need using datamover nodes. Let us know if you need help. | * Users are to clean up $SCRATCH on the GPC as much as possible (remember it's temporary data!). Then they can transfer what they need using datamover nodes. Let us know if you need help. | ||
* To enable this transfer, there will be a short period during which you can have access to Niagara as well as to the GPC storage resources. This period will end no later than May 9, 2018. | * To enable this transfer, there will be a short period during which you can have access to Niagara as well as to the GPC storage resources. This period will end no later than May 9, 2018. | ||
== | == New Users (without a previous SciNet account) == | ||
<ul> | <ul> | ||
<li><p>Those of you new to SciNet, but with 2018 RAC allocations on Niagara, | <li><p>Those of you new to SciNet, but with 2018 RAC allocations on Niagara, have had your accounts created and ready for you to login.</p></li> | ||
<li><p>New, non-RAC users: we are still working out the procedure to get access. If you can't wait, for now, you can follow the old route of requesting a SciNet Consortium Account on the [https://ccsb.computecanada.ca CCDB site].</p></li></ul> | <li><p>New, non-RAC users: we are still working out the procedure to get access. If you can't wait, for now, you can follow the old route of requesting a SciNet Consortium Account on the [https://ccsb.computecanada.ca CCDB site], or write to support@scinet.utoronto.ca.</p></li></ul> | ||
== Getting started == | == Getting started == | ||