To do so, the chipmaker developed an algorithm dubbed NUMA-Booster to schedule design workloads to run more optimally than would otherwise using default OS scheduling on multicore NUMA systems. The algorithm increased server performance by 17 percent, effectively boosting the overall capacity of its server clusters by 11 percent. The company expects to see even greater gains as it retires older machines and deploys newer multicore models.
Based on the success of the pilot portion of this project, the company then worked with its finance and user groups to reduce forecasted servers and energy footprint while still meeting computing demand.
2011 Green 15 winner: Tata Consultancy Services
Based in Chennai, India, Tata Consultancy Services realized a couple of years ago that its growing electricity demands would soon outpace the available supply. To stave off this shortage, TCS launched an initiative aimed at cutting electricity usage, associated costs, and carbon emissions.
Dubbed PowerIT, the initiative included the development of a Web-based tool for capturing and reporting daily electricity consumption across the company's various work centers. The tool has enabled TCA to unlock its energy consumption patterns, a critical step in reducing usage.
The PowerIT team has used social media, pop-up messages, contests, and brainstorming sessions to push energy-saving practices and to generate new ones -- including consolidating weekend work into a single building and powering down PCs when not in use.
TCS has also worked to evaluate vendors based on the power efficiency of their products and to embrace green practices within its various data centers, such as virtualization and application scheduling to use idle computing time.
TCS saw a 9 percent savings in energy consumption in a controlled environment without any major financial investment. Once the company expanded the initiative to its 84 development centers across India and made a greater financial investment, it realized a 16 percent energy savings.
2011 Green 15 winner: Telenor Norway
Telenor Norway opted for a more responsible approach to decommissioning 9,500 base stations as part of a massive upgrade of its wireless and core networks. Rather than selling equipment to recyclers for pennies on the dollar, the company launched a reuse strategy that greatly reduced the environmental impact of transporting and disposing retired gear.
Telenor Norway enlisted SaaS provider Trade Wings as its reuse-strategy partner. Trade Wings' Re:source Visibility service enabled Telenor Norway to track existing network assets -- from active to excess or decommissioned -- throughout its supply chain.
Using the system, de-installed equipment data is captured at a central collection site in Oslo warehouse for real-time visibility. The system's disposition engine then checks against demand for each piece of equipment, determining whether it should be resold, recycled locally to extract precious metals (and limit transportation), or stored for reuse in one of Telenor Group's mobile networks.
Telenor's approach to dealing with decommissioned assets has helped the company reduce carbon emissions associated with transportation while squeezing the most value out of each piece of equipment it owns. All told, the initiative is expected to save Telenor nearly $9 million.