How to use VisIt¶
|
Software
|
Version
|
Cluster
|
|---|---|---|
|
VisIt
|
3.2.2
|
Dardel
|
Install local client¶
Download and install the 3.2.2 client for your operating system from https://visit-dav.github.io/visit-website/releases-as-tables/. It is important that the client version matches the server version on the cluster.
Configure client¶
Start the client and navigate to Options>Host profiles>New Host. In the Host Settings tab fill in the following:
|
Field |
Value |
|---|---|
|
Remote host name |
dardel.pdc.kth.se |
|
Path to VisIt installtion |
/pdc/software/22.06/other/visit/3.2.2 |
|
Username |
<Your PDC username> |
|
Tunnel data connection through SSH |
yes |
|
SSH command |
ssh |
Go to the Launch Profiles tab and select New Profile. Give it a name, such as “CPU”. Go to the “Parallel” tab and check Launch parallel engine and enter the following:
|
Field |
Value |
|---|---|
|
Parallel launch method |
sbatch/srun |
|
Partition / Pool / Queue |
main |
|
Number of processors |
128 |
|
Bank / Account |
<Name of allocation at PDC> |
|
Time Limit |
00:20:00 |
Go to the Advanced tab and check Launcher arguments, and enter:
--cpus-per-task=1
Now the settings are done! Press Apply and then Dismiss.
Run visualization¶
To visualize data on Dardel, navigate to Open file… and choose dardel.pdc.kth.se instead of localhost. Now you should see list of files in your home directory on Dardel. Select the file you want to visualize and click OK. Select the profile, and modify the parameters if necessary, then click OK again.
Now VisIt puts a job in the queue and waits until it is started. Once the job starts, you can begin to visualize! Select plots and click Draw. The rendering will be done on the cluster, and then sent to your local client for display.
To view the status of the remote compute engine on the cluster, navigate to File>Compute engines… Here you can also stop the job by clicking on Close engine.
The latest visualization will be kept in your client even if the job hits the time limit or is closed. If you make some changes to the plots and press Draw, you will be asked if you want to start a new job.
Disclaimer¶
PDC takes no responsibility for the correctness of results produced with the binaries. Always evaluate the binaries against known results for the systems and properties you are investigating before using the binaries for production jobs.