b production measurements with ATLAS

The Large Hadron Collider at CERN will produce b hadrons with unprecedentedly high statistics, and with a higher energy reach than any previous machine. The ATLAS detector will offer excellent acceptance and performance for b physics studies and will make high statistics measurements of b quark production to probe QCD. ATLAS can contribute to an understanding of the large discrepancy seen between the QCD prediction and Tevatron cross-section measurements. Measurements will be made of the absolute and differential production cross-sections. Measurements of bb correlations will be made to test the NLO contributions to the cross-section and to place limits on non peturbative effects.