Large app support

With large app support, you can work with apps that are larger than the standard app size. You can configure one or more spaces in Qlik Cloud to support large apps, ensuring they have the memory needed to run efficiently.

How large app support works

Large app support provides additional memory through engines of different sizes in engine pools. Every app is loaded into an engine at runtime. An autoscaling mechanism dynamically allocates resources as needed and routes large apps to the best-suited engines. This ensures that you can work with an app even if it requires more resources than a single engine can provide.

The total large app capacity determines how many apps larger than the standard app size that you can have open at the same time. Only the in-memory size of the app is counted, not the number of user sessions on each app.

Large app capacity options

Large app capacity is available in 20 GB and 100 GB packs for the following subscriptions:

• Qlik Cloud Analytics Premium

• Qlik Cloud Enterprise

• Qlik Sense Enterprise SaaS

You can mix and match capacity packs to allocate the right amount to your tenant. Qlik Cloud Enterprise includes 40 GB of large app capacity by default.

Qlik provides support for capacity planning and provisioning. Contact Qlik Sales for more information.

Supported app size based on assigned capacity

If the large app capacity assigned to your tenant is less than 50 GB, the maximum supported app size is equal to the assigned capacity. The table shows the supported app size when the total large app capacity is 20, 40, or 50 GB.

Estimating your large app capacity needs

Working with large apps

Administrators can define which spaces that allow large apps. You can see whether a space allows large apps in the Allow large apps column of the Spaces table.

For more information about managing spaces, see Managing spaces.

Considerations when using large apps

When using large apps, consider the following:

Capacity usage

• The large app capacity is only used for apps that exceed the standard app size.

• Each open instance of an app counts toward the large app capacity. For example, if a source app is open in a shared space and a published copy of the app is open in a managed space, both count as separate instances.

• When you open a large app, it counts against your large app capacity, whether you open the app with or without data.

Space behavior

• Spaces that allow large apps are not explicitly labeled in Qlik Cloud Catalog. To indicate that a space is intended for large apps, use the description field of the space.
• Apps can be moved between standard spaces and spaces with large app support. However:
  • If an app exceeds the standard in-memory limit and is moved to a standard space, it cannot be opened. You can still download the app and view its details in activity centers.
  • If large app support is removed from a space, the app remains, but it cannot be opened it it exceeds the standard in-memory limit.

Reloading large apps

• When you reload data from a space with large app support, the reload runs on that space.

  Information note

  • When you create a new app, its size is initially unknown. To avoid any issues, run the initial reload via the Reload now option from the Analytics activity center. This will accurately determine the size of your app and ensure it is routed to the appropriate engine based on its size.

  • For subsequent reloads, the memory limit depends on the previous reload size. If reloading directly from the Script Editor (DLE) fails because the app exceeds this limit, restart the reload from the DLE to redirect the app to a larger engine.

• The peak reload size for apps in spaces without large app support is up to 34 GB. If a reload exceeds this limit, move the app to a space that allows large apps.