W. Stevens. UNIX Network Programming, Networking APIs: Sockets and XTI, Volume 1, Second Edition. Prentice Hall PTR, PrenticeHall, Inc., Upper Saddle River, NJ 07458, 1998.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....according to the portion of data held by each processor. Next, DPFS API consults database to obtain meta data information of the file such as which I O nodes store these bricks and what their offsets are in the local subfile. Then, DPFS API invokes system communication API such as socket on UNIX [20] to send the request to the server which runs on the local file system of storage devices. As long as the server receives the request, it uses the local file system API to actually perform I O. 3 DPFS Striping Methods and File Levels The most significant feature of parallel file systems is that ....

W. Stevens. UNIX Network Programming, Networking APIs: Sockets and XTI, Volume 1, Second Edition. Prentice Hall PTR, PrenticeHall, Inc., Upper Saddle River, NJ 07458, 1998.

....of the system in terms of agents. Section 4 presents fragments of an ebusiness architecture which illustrates the use of styles and patterns proposed in the paper. Finally, Section 5 summarizes the contributions and points to further work. 2 Organizational Styles Organizational theory [Min92, Sco98] and strategic alliances [Gom96, Seg96, Yos95] study alternative styles for (business) organizations. These styles are used to model the coordination of business stakeholders individuals, physical or social systems to achieve common goals. We propose a macro level catalogue adopting (some ....

W. Richard Scott. Organizations : rational, natural, and open systems, Upper Saddle River, N.J., Prentice Hall, 1998.

.... MovieStudio Attribute constant game: Game, scenario: Scenario, contract: GameMovieContract condition scenario: Scenario(scenario.game ref=game) contract.gd=depender contract.ms=dependee) trigger JustCreated(game) scenario.game ref=game 3 Organizational Styles Organizational theory [Min92, Sco98] and strategic alliances literature [Gom96, Seg96, Yos95] study altemative styles for (business) organizations. These styles are used to model how business stakeholders individuals, physical or social systems coordinate in order to achieve common goals. Tropos adopts (some of these) ....

W. Richard Scott. Organizations: rational, natural, and open systems, Upper Saddle River, N.J., Prentice Hall, 1998.

....or write operation will return immediately with the number of bytes that were successfully read written. On the other hand, in a blocking I O system, a call will not return (i.e. will block) until all bytes have been read written. Modern systems use default socket bu er sizes of 8192 61440 bytes [16]. Because modern processors are much faster than any available networking technology, these small bu ers often become full. Thus the potential blocking situation can be frequent. If blocking I O is used in a system where the same OS process handles both the network activities and the execution of ....

W.R. Stevens. UNIX Network Programming, Networking APIs: Sockets and XTI, volume 1. Prentice-Hall, Upper Saddle River, NJ, 1998.

....4 overviews a mobile robot and an e business examples while Section 5 sketches the Tropos project within which this research has been conducted. Finally, Section 6 summarizes the contributions of the paper and points to further research. 2. Organizational Styles Organizational theory (such as [7, 10]) and strategic alliances (e.g. 5, 16] study alternatives for (business) organizations. These alternatives are used to model the coordination of business stakeholders individuals, physical or social systems to achieve common goals. Using them, we view a software system as a social ....

W. Richard Scott. Organizations : rational, natural, and open systems, Upper Saddle River, N.J., Prentice Hall, 1998.

....states that the customer expects to get the best price for the type of product that she is buying. The condition for ContinuousSupply states that the shop expects to have the items in stock as soon as someone is interested in buying them. 3 3 Organizational Styles Organizational theory [Min92, Sco98] and strategic alliances literature [Gom96, Seg96, Yos95] study alternative styles for (business) organizations. These styles are used to model how business stakeholders individuals, physical or social systems coordinate in order to achieve common goals. Tropos adopts (some of these) ....

W. Richard Scott. Organizations : rational, natural, and open systems, Upper Saddle River, N.J., Prentice Hall, 1998.

....same organizational models and architectural designs understood in terms of organizational concepts. Moreover, when designing enterprise MAS, this approach is particularly relevant to match the enterprise operational environment. We represent such styles inspired by organizational theory (such as [Min93, Sco98]) as well as strategic alliances (e.g. Gom96, Seg96, Yos95] in terms of the i modeling framework. The flat structure has no fixed structure and no control of one actor over another is assumed. The main advantage of this architecture is that it supports autonomy, distribution and continuous ....

W. Richard Scott. Organizations : rational, natural, and open systems, Upper Saddle River, N.J., Prentice Hall, 1998.

....any results to the client. For flexibility the architecture uses a generic datagram communication which may be implemented using many different types of inter process communication (IPC) including POSIX message queues and TCP IP sockets. The vision server currently uses an iterative server design [7, 8], although it would not be difficult to adapt it to a concurrent design. The ClientRegistry As its name suggests, the ClientRegistry is responsible for maintaining registration information for all active clients of the server. To reduce the amount of communications between clients and the ....

Stevens, W.R., UNIX Network Programming. Second ed. Vol. 1 Networking APIs: Sockets and XTI. 1997, Upper Saddle River, NJ: Prentice-Hall.

....is not achieved by decreasing the protocol data units, but by increasing the payload. The writev and readv system calls take a data structure as a parameter that contains pointers to several small messages that are sent and received via links identified by file descriptors as one contiguous packet[6]. This approach has two lines of attack: ffl Decreased protocol overhead: Due to the fact that several messages of are sent in one buffer, the protocol stack only deals with that buffer. Especially for communication over long distances this will alleviate the receiver from acknowledging every ....

....protocol you are using for accessing the communication line offers already support for Gather Scattering. TCP already includes a timeout based approach(Nagle algorithm[12] 13] for application in wide area networks. Still it is difficult or in some operating systems even impossible to tune it[6]. ffl There are small messages, but they are only sent very seldom. 5 Structure and Participants The interaction diagram in figure 1 shows, how the participants in the Gather Scatter pattern interact. Connection link : Connection Scatter Gather Buffer Application 3: Process messages 4: ....

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W. Richard Stevens. UNIX Network Programming, Networking APIs: Sockets and XTI. Volume 1, Second Edition. Prentice Hall PTR, Upper Saddle River, NJ 07458, 1995. ISBN 0-13-490012-X

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