FAQ¶

Q: I receive the error: "<<Workload> file <file_name> file> could not be found."
Q: I receive the error: "No matching package found for workload <workload>"
Q: I am trying to set a valid runtime parameters however I still receive the error "Unknown runtime parameter"
Q: I have a big.LITTLE device but am unable to set parameters corresponding to the big or little core and receive the error "Unknown runtime parameter"
Q: I receive the error Could not find plugin or alias "standard"
Q: My Juno board keeps resetting upon starting WA even if it hasn’t crashed.
Q: I’m using the FPS instrument but I do not get any/correct results for my workload
Q: I am getting an error which looks similar to 'CONFIG_SND_BT87X is not exposed in kernel config'...

Q: I receive the error: `"<<Workload> file <file_name> file> could not be found."`¶

A: Some workload e.g. AdobeReader, GooglePhotos etc require external asset files. We host some additional workload dependencies in the WA Assets Repo. To allow WA to try and automatically download required assets from the repository please add the following to your configuration:

remote_assets_url: https://raw.githubusercontent.com/ARM-software/workload-automation-assets/master/dependencies

Q: I receive the error: `"No matching package found for workload <workload>"`¶

A: WA cannot locate the application required for the workload. Please either install the application onto the device or source the apk and place into $WA_USER_DIRECTORY/dependencies/<workload>

Q: I am trying to set a valid runtime parameters however I still receive the error `"Unknown runtime parameter"`¶

A: Please ensure you have the corresponding module loaded on the device. See Runtime Parameters for the list of runtime parameters and their containing modules, and the appropriate section in setting up a device for ensuring it is installed.

Q: I have a big.LITTLE device but am unable to set parameters corresponding to the big or little core and receive the error `"Unknown runtime parameter"`¶

A: Please ensure you have the hot plugging module enabled for your device (Please see question above).

A: This can occur if the device uses dynamic hot-plugging and although WA will try to online all cores to perform discovery sometimes this can fail causing to WA to incorrectly assume that only one cluster is present. To workaround this please set the core_names parameter in the configuration for your device.

Q: I receive the error `Could not find plugin or alias "standard"`¶

A: Upon first use of WA3, your WA2 config file typically located at $USER_HOME/config.py will have been converted to a WA3 config file located at $USER_HOME/config.yaml. The “standard” output processor, present in WA2, has been merged into the core framework and therefore no longer exists. To fix this error please remove the “standard” entry from the “augmentations” list in the WA3 config file.

Q: My Juno board keeps resetting upon starting WA even if it hasn’t crashed.¶

A Please ensure that you do not have any other terminals (e.g. screen sessions) connected to the board’s UART. When WA attempts to open the connection for its own use this can cause the board to reset if a connection is already present.

Q: I’m using the FPS instrument but I do not get any/correct results for my workload ¶

A: If your device is running with Android 6.0 + then the default utility for collecting fps metrics will be gfxinfo however this does not seem to be able to extract any meaningful information for some workloads. In this case please try setting the force_surfaceflinger parameter for the fps augmentation to True. This will attempt to guess the “View” for the workload automatically however this is device specific and therefore may need customizing. If this is required please open the application and execute dumpsys SurfaceFlinger --list on the device via adb. This will provide a list of all views available for measuring.

As an example, when trying to find the view for the AngryBirds Rio workload you may get something like:

...
AppWindowToken{41dfe54 token=Token{77819a7 ActivityRecord{a151266 u0 com.rovio.angrybirdsrio/com.rovio.fusion.App t506}}}#0
a3d001c com.rovio.angrybirdsrio/com.rovio.fusion.App#0
Background for -SurfaceView - com.rovio.angrybirdsrio/com.rovio.fusion.App#0
SurfaceView - com.rovio.angrybirdsrio/com.rovio.fusion.App#0
com.rovio.angrybirdsrio/com.rovio.fusion.App#0
boostedAnimationLayer#0
mAboveAppWindowsContainers#0
...

From these "SurfaceView - com.rovio.angrybirdsrio/com.rovio.fusion.App#0" is the mostly likely the View that needs to be set as the view workload parameter and will be picked up be the fps augmentation.

Q: I am getting an error which looks similar to `'CONFIG_SND_BT87X is not exposed in kernel config'...`¶

A: If you are receiving this under normal operation this can be caused by a mismatch of your WA and devlib versions. Please update both to their latest versions and delete your $USER_HOME/.workload_automation/cache/targets.json (or equivalent) file.