Arnold can generate a log reporting all the steps needed to render an image and any warnings and errors encountered by the renderer. This log also provides detailed statistics that are useful for debugging, optimizing, and benchmarking renders.

The Arnold log provides detailed statistics that are useful for debugging, optimizing and benchmarking renders. It is the first thing to examine should you encounter errors and usually the first information to send to support.

Note that an individual log file will be saved for each frame of animation that has been rendered.

You can open an Arnold Render Logs window directly from the Arnold RenderView window where you can view a simple-to-read version of the Arnold log.


Verbosity Level

Specifies the amount of information in the log messages, with Warnings being least and Debug most:

    • Errors: Show errors only.
    • Warnings (default): Show error and warning messages.
    • Info: Show errors, warnings, statistics, and any info that does not slow down rendering.
    • Debug: Show all information. Take care when using this mode as render times may increase.

Console

Shows the log in Maya's Output Window (on Windows). On OSX or Linux, if you start Maya from a terminal window, then the log is output to that terminal window (otherwise, click the File checkbox to output the log to a file).

On Windows, if you start Maya using the Windows Start menu, you may not see the Arnold log in the Output Window. If this happens, you can either start Maya from the command line (and then the Arnold log will show up in the Output Window) or enable File logging.

File

If enabled a log is written to the specified file.

Filename

Specifies the output path for Arnold log files. You can use environment variables. You can use padding (#) in the file name.

Max. Warnings

Limits the number of warning messages (of a similar type) that are sent to the log.

MtoA Translation Info:

Dumps debug messages from MtoA during IPR updates, etc..


Startup Log verbosity

It is possible to use a Maya Environment Variable to control the log verbosity when loading the MtoA plugin. To do this you must add the following text to the Maya.env file. For example:

MTOA_STARTUP_LOG_VERBOSITY = 3

There are 4 levels for this logging:

0 Nothing.

1 Warnings and errors.

2 Warnings, errors and infos (how many extensions we register, how many shader nodes are created, what plugin is loaded).

3 Everything.


Note that you must first run Maya through the command line or a batch file to view the log in Maya's Output Window (Windows) or in the console (Linux).



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