IBM Grid Computing.

[zVlad]

You can read about subject here:

http://www-1.ibm.com/grid/

Few FAQs from that URL:

Is grid computing available today — or is it more of a future statement?
Grid computing is used today by many companies across a number of industries. Current IBM customer references for grid include Butterfly.net, a development studio, online publisher and infrastructure provider for massively multiplayer games that connect players on PC's, consoles and mobile devices. Butterfly Grid consists of two clusters of approximately 50 IBM ™ xSeries™ servers running in IBM hosting facilities. Specialized game servers and database servers are fully meshed over high-speed fiber-optic lines, enabling transparent routing of players to different servers in the grid. Another current reference for IBM Grid Computing is the University of Pennsylvania's groundbreaking National Digital Mammography Archive, which gives rapid retrieval of digital patient files from multiple locations in a secure environment. The University of Pennsylvania Grid manages this huge data volume, schedules traffic and encrypts all image and information transmission using portal systems running almost exclusively on IBM hardware — including sixteen distributed IBM Netfinity servers running Linux and Windows 2000.

Does IBM use grid computing in its own infrastructure?
Yes. IBM is a major user of grid computing. IBM's intraGrid, based on the Globus Toolkit, is a research and development grid that allows IBM to leverage many worldwide assets for research purposes and help us understand the complexities of managing a grid infrastructure on an enterprise scale. And IBM uses grids for other purposes throughout the company. One example is the IBM Boeblingen Lab Grid, composed of three IBM pSeries™ clusters running AIX and LoadLeveler, a cross-departmental grid used to run zSeries processor unit simulations. Jobs are submitted through a web portal, presenting users with the same interface as the one they used when running simulations on an isolated cluster. The WebSphere based portal uses the Globus Java CoG Kit to pre-select candidate queues for submitting each simulation, using Globus Metacomputing Directory Service. This pre-selection is based on cluster loads and job characteristics. Access to a shared DB2 database allows for the automated generation of proxy certificates and for the monitoring and reporting of user jobs.

What is IBM's relationship with grid computing?IBM views grid computing as critical to the ongoing development of on demand operating environments. For all the excitement and innovation that grid represents, much of the thinking and technology that drive grid are anything but new to IBM. IBM was an early leader in "virtualization" — the driving force behind grid computing — which has enabled the computer to do many processing jobs simultaneously for thousands of users. Grid computing is an advanced evolution of virtualization — and IBM Grid Computing continues IBM's history of IT innovation for business. Deep experience in e-business processes, support for open standards, enabling of our products and services for grid, partnership role in the grid community and relationships with Business Partners make IBM an important force in bringing the benefits of grid to enterprise computing.