Joe Schmidt will be putting his players through their paces at the Celtic Manor Resort in Wales ahead of Sunday's battle with France for the top-spot in Pool D.
Centre Jared Payne will hope to play a part in today's session after spending most of the weekend in a protective boot because of his bruised foot.
Jonathan Sexton says Ireland will need to improve significantly to succeed at the World Cup.
The 6 Nations champions failed to impress in Sunday's victory over Italy, which sealed their place in the quarter finals.
Sexton says Ireland have to raise their game for the group decider against France on Sunday.
There's also pool matches today at the World Cup.
The opening match features the two minnows in Pool D as Canada take-on Romania at the Leicester City Stadium, where kick-off is at 16:45.
The late game tonight is in Pool A where Uruguay will face Fiji from 8pm.
