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VisIt: Difference between revisions
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VisIt requires the same major version | VisIt requires the same major version on the local client and the remote host; this prevents incompatibilities that typically show as a failed handshake when establishing the client-server connection. | ||
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<tab name="Cedar and Graham"> | <tab name="Cedar and Graham"> | ||
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Two versions of VisIt are installed: visit/2.12.3 and visit/2.13.0. To use remote VisIt in client-server mode, on your laptop you need the matching major version, either 2.12.x or 2.13.x. Before starting VisIt, download the host profile XML file [https://owncloud.westgrid.ca/index.php/s/HGxHPO2fPspdb0O/download host_cedar.xml]. | |||
<br> | |||
* On Linux/Mac, copy the file to ''~/.visit/hosts/''. | |||
* On Windows, copy the file to ''My Documents\VisIt 2.13.0\hosts\''. Start VisIt on your laptop; in the main menu, under ''Options -> Host Profiles'', you should see the ''cedar'' host profile. If you want to do remote rendering on Graham instead, set | |||
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For both Cedar and Graham, set your CCDB username | For both Cedar and Graham, set your CCDB username. | ||
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In the same setup window | In the same setup window, click on the ''Launch Profiles'' tab. You should see two profiles (''login'' and ''slurm''): | ||
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* The ''login'' profile is for running | * The ''login'' profile is for running the engine on a login node, which we do not recommend for heavy visualizations. | ||
* The ''slurm'' profile is for running | * The ''slurm'' profile is for running the engine inside an interactive job on a compute node. If you are planning to do the this, select the ''slurm'' profile and then click on the ''Parallel'' tab and below it on the ''Advanced'' tab. In the ''Launcher arguments'' field, replace ''--account=def-someuser'' by your default allocation, as shown below: | ||
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Save settings with Options - Save Settings and then restart VisIt on your laptop for settings to take effect. Start the file-open dialogue and | Save the settings with ''Options -> Save Settings'' and then restart VisIt on your laptop for settings to take effect. Start the file-open dialogue and change the localhost to ''cedar'' (or ''graham''). Hopefully, the connection is established, the remote VisIt Component Launcher gets started on the cluster's login node, and you should be able to see the cluster's filesystem, navigate to your file and select it. You will be prompted to select either the ''login'' (rendering on the login node) or ''slurm'' (rendering inside an interactive Slurm job on a compute node) profile. If you select the ''slurm'' profile, you will need to specify the number of nodes and processors and the maximum time limit: | ||
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Click | Click on ''OK'' and wait for VisIt's engine to start. If you selected rendering on a compute node, it may take some time for your job to get started. Once your dataset appears in the ''Active source'', the VisIt's engine is running and you can proceed with creating and drawing your plot. | ||
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<tab name="Niagara"> | <tab name="Niagara"> | ||
=== VisIt configuration === <!--T:23--> | |||
=== VisIt | |||
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For VisIt to connect to the Niagara cluster, you need to | For VisIt to connect to the Niagara cluster, you need to configure your host through one of the following methods: | ||
=== | === Host configuration file === <!--T:25--> | ||
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Download the Niagara host file, right-click on [https://support.scinet.utoronto.ca/~mponce/viz/host_niagara.xml host_niagara.xml] and select ''Save as''. | |||
Depending on the OS you are using on your local machine: | Depending on the OS you are using on your local machine: | ||
< | <br> | ||
* On Linux/Mac, place the file in <code>~/.visit/hosts/</code>. | |||
* On Windows, place the file in <code>My Documents\VisIt 2.13.0\hosts\</code>. | |||
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Restart VisIt and check that the | Restart VisIt and check that the Niagara profile is available under ''Options -> Host Profiles''. | ||
=== Manual | === Manual host configuration === <!--T:28--> | ||
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Open VisIt in your computer, go to the ''Options'' menu, and click on ''Host Profiles''. | |||
Open VisIt in your computer, go to the 'Options' menu, and click on | Then click on ''New Host'' and select: | ||
Then click on 'New Host' and select: | |||
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Check ''Tunnel data connections through SSH'' and click on ''Apply''. | |||
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At the top of the window, click on the ''Launch Profiles'' tab to create a profile: | |||
<br> | |||
< | * <code>login</code> to connect through a login node and access data; | ||
* <code>slurm</code> to using compute nodes as rendering engines. | |||
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Finally, after you are done with these changes, go to the | Finally, after you are done with these changes, go to the ''Options'' menu and select ''Save settings'', so that your changes are saved and available next time you launch VisIt. | ||
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</tab> | </tab> | ||
<tab name="Cloud VM"> | <tab name="Cloud VM"> | ||
=== Prerequisites === <!--T:39--> | === Prerequisites === <!--T:39--> | ||
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Start VisIt on your laptop | Start VisIt on your laptop. In ''Options -> Host profiles'', edit the connection nickname (let's call it Cloud West), the VM host name, the path to the VisIt installation (/home/centos/visit) and your username on the VM; also enable tunneling through SSH. Don't forget to save your settings with ''Options -> Save Settings''. TWhen you open a gile (''File -> Open file -> Host = Arbutus'') you should see the VM's filesystem. Load a file and try to visualize it. Data processing and rendering should be done on the VM, while the result and the GUI controls will be displayed on your laptop. | ||
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