With Integration Services, Reporting Services, and Analysis Services, their respective business intelligence objects (packages, reports, and cubes) are designed through the Business Intelligence Design Studio (BIDS), which is really the Visual Studio...

Once you have identified potential Analysis Services bottlenecks, and have made the proper adjustments to Analysis Services server properties and perhaps added more memory/CPU power to the server, the next phase is to look into tuning the OLAP cube design...