Global finance chiefs gathering in Cairns, Australia, face growing pressure to take steps to bolster growth amid a dimming global economic outlook.

Group of 20 member nations will share plans at this weekend's summit of their finance ministers and central bank governors on ways to boost gross domestic product by 2 percent over five years, a commitment that will be reiterated in Cairns, an official representing one of the G-20 nations said, citing a draft communique.

The summit delegates view the outlook for global growth as less positive than earlier this year, the official warned.