BuddyPress.org

No, I use original BuddyPress version. But my WP is non-English.
I was trying to find out how to increase memory, and some people say that it’s possible to change in wp-settings.php. I went through this file, and found the following line
// Set initial default constants including WP_MEMORY_LIMIT, WP_DEBUG, WP_CONTENT_DIR and WP_CACHE.
wp_initial_constants( );
Maybe I can set the memory_limit using this function? In this case, what values should I use?

Thanx