![]() Amazon and eBay are software companies because they use software as their primary vehicle to deliver their products or services. ![]() By this definition, Microsoft and Adobe are software companies, but so are Amazon and eBay. Software companies are companies where software is the primary product or where it is the primary delivery method for the product. The focus of this paper is the “everyone else” group. I define two types of businesses for the purposes of this section: software companies (independent software vendors) and everyone else. Mixing agile and waterfall methodologies.īefore we proceed, let me set the context within which I base all of what you will read here. Waterfall to agile is a continuum of steps not flipping a switch. Yet, for many enterprise executives, directors, and managers, agile is still confusing, obscure, and not trusted.Įvery project manager can successfully integrate agile values principles and practices in a waterfall environment to improve project predictability and ultimate success, by understanding and applying three key principles:Īgile is not made for projects as the Project Management Institute defines projects. In 2010, that number jumped to 90% (Version One, 2010). In 2009, 84% (Version One, 2009) of respondents to the Version One Agile Survey indicating they use agile to some degree. In that time agile has moved from relative obscurity in the world of project management to the main stream. This year the Agile Manifesto celebrates its 10-year anniversary. Project managers are not only important but also necessary for the success of large-scale projects. Project managers can be assured that there is a strong role for them on agile projects. Finally, a three-layer mixed model is proposed for how you can use the understanding of project and product management combined with deliberate methodology selection to manage an agile project in a waterfall context. I discuss and dispel two myths in the common belief that a project is either agile or waterfall and review four models of increasing agility and how they apply to project managers and agile team lead roles specifically. There are, however, three keys that the project manager must use to successfully unlock the power of agile to improve project delivery. I contend that agile is optimized for product management but can be used to effectively manage projects. The purpose of this paper is to examine how project managers can successfully apply agile to their projects in an enterprise context. Agile is not a silver bullet though, and agile methods need to adapt to the changed context of the enterprise. In the 10 years since the agile manifesto was written, agile has matured it has moved from being fringe to being a core methodology and from small software companies to the point where it is used, to some extent, in a majority of enterprise organizations today. #DIFFERENCE IN COST SEQUENTIAL TESTING NT WINDOWS#Ī Performance Study of Sequential I/O on Windows NT( TM) 4Įrik Riedel, Carnegie Mellon University, van Ingen, Jim Gray, Microsoft Research, database, data mining, and multimedia applications require large, sequential transfers and have bandwidth as a key requirement.Every project manager can successfully integrate agile in a waterfall environment to improve project predictability, cost effectiveness, and ultimately success.Īgile was once considered by project management professionals to be a fad. This paper investigates the performance of reading and writing large sequential files using the Windows NT™ 4.0 File System. ![]() The study explores the performance of Intel Pentium Pro™ based memory and IO subsystems, including the processor bus, the PCI bus, the SCSI bus, the disk controllers, and the disk media in a typical server or high-end desktop system. We provide details of the overhead costs at each level of the system and examine a variety of the available tuning knobs. ![]() We show that NTFS out-of-the-box performance is quite good, but overheads for small requests can be quite high. The best performance is achieved by using large requests, bypassing the file system cache, spreading the data across many disks and controllers, and using deep-asynchronous requests. This combination allows us to reach or exceed the half-power point of all the individual hardware components. High-speed sequential access is important for bulk data operations typically found in utility, multimedia, data mining, and scientific applications. High-speed sequential IO is also an important factor in the startup of interactive applications. Minimizing IO overhead and maximizing bandwidth frees power to actually process the data.įigure 1 shows how data flows in a modern storage subsystem. #DIFFERENCE IN COST SEQUENTIAL TESTING NT WINDOWS#. ![]()
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