Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application

Bastien_Laugiero — Thu, 06 Jan 2022 16:36:30 GMT

Opening an application to visualize charts through the hub, the visualization may fail and the error "Out of calculation memory" will be printed.

Environment:

Qlik Sense Enterprise on Windows, all versions

Resolution

The issue is often related to having an app that is too large or requires a re-design or general optimization. A poorly designed application can lead to memory leaks.

Application optimization

Review the application and optimize as needed to prevent performance problems for the engine service.

Verify resource availability

Verify that the servers hosting the Qlik Sense engine service have sufficient resources (CPU / Memory) to proceed with the calculation. It is highly recommended to have at least 16 cores and 64 GB of memory.

Modify the Hypercube memory limit

You can otherwise change the timeout.

Open the Qlik Sense Management Console. Default: https://<QPS server name>/qmc.
Open Engines for each node
Select the Engine to modify and click Modify
Open the Advanced menu in menu to the right
Modify the Hypercube memory limits (bytes). This is by default set to 0, which allows the engine to apply a global heuristic ensuring that we do not run more than 1 big calculation in parallel. Setting this value to -1 will disable the limit.
Restart the Qlik Sense Engine and Qlik Sense Service Dispatcher on all nodes after the setting was changed.

Cause:

The "Hypercube memory limits" limits how much memory a hypercube evaluation can allocate during a request. If multiple hypercubes are calculated during the request, the limit is applied to each hypercube calculation separately.

If it sets to 0, the engine applies a global heuristic which basically ensures that it doesn't run more than 1 "big" calculation in parallel.
If you set this value to -1 then you will disable the limit and allow the Engine to keep trying to load the application.

The negative value disables the limit, but it wouldn't exceed the limit set under the Max memory usage (%) or Memory usage mode.

Re: Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application

PierfrancescoGirolami — Fri, 05 Aug 2022 16:26:30 GMT

This is a very clear explanation. Thanks a lot!

Pierfrancesco

Re: Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application

IsakBosman — Thu, 09 May 2024 06:33:49 GMT

This solved my similar issue, thank you.

article Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application in Official Support Articles

Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application

Environment:

Resolution

Application optimization

Verify resource availability

Modify the Hypercube memory limit

Cause:

Related Content:

Re: Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application

Re: Qlik Sense: "Out of calculation memory" while loading an application or a chart into an application