# guide-file-append, Qguide-file-append

Causes the results of guided auto parallelism to be appended to a file. This feature is only available for ifort.

## Syntax

Linux: | -guide-file-append[=filename]

macOS: | -guide-file-append[=filename]

Windows: | /Qguide-file-append[:filename]

## Arguments

filename | Is the name of the file to be appended to. It can include a path.

## Default

OFF | Messages that are generated by guided auto parallelism are output to stderr.

## Description

This option causes the results of guided auto parallelism to be appended to a file.

This option is ignored unless you also specify one or more of the following options:

- [Q]guide

- [Q]guide-vec

- [Q]guide-data-trans

- [Q]guide-par

If you do not specify a path, the compiler looks for filename in the current working directory.

If filename is not found, then a new file with that name is created in the current working directory.

If you do not specify a file extension, the name of the file is filename.guide.

If the name specified for filename conflicts with a source file name provided in the command line, the name of the file is name-of-the-first-source-file.guide.

### Note

If you specify the [Q]guide-file-append option and you also specify option [Q]guide-file, the last option specified on the command line takes precedence.

## IDE Equivalent

None

## Alternate Options

None

## Example

The following example shows how to cause guided auto parallelism messages to be appended to a file named my_messages.txt:

    -guide-file-append=my_messages.txt       ! Linux and macOS systems
    /Qguide-file-append:my_messages.txt      ! Windows systems

Parent topic: Advanced Optimization Options

## See Also

guide, Qguide compiler option
guide-file, Qguide-file compiler option