Vishwa 2.0: Dynamic Configuration of P2P Grid Middleware
High performance applications have varied requirements in terms of CPU, memory, network bandwidth etc. Application execution speed largely depends upon the middleware configuration. So, we need to have a middleware that can be configured depending on the application requirements. Such a middleware would enable efficient utilization of grid resources.
Vishwa 2.0 extends the existing Vishwa, which is a peer-to-peer scalable and reconfigurable grid computing middleware. It enriches the middleware with methodology & constructs for capturing application-level requirements. Thus it allows dynamic configuration of the middleware for applications built on top of Vishwa, a two-layered architecture. It provides easy and efficient Java-based programming environment for writing both SPMD & MPMD kind of applications. The key aspects of this work include a network class loader that loads necessary classes on demand over the network and a dynamic grid scheduler. This work also enables a customized way of specifying node capability metric.
The features of this new implementation are as follows
- New implementation is in Java(Update: Tutorial on running non-java(C,C++ etc.) tasks in Vishwa)
- Problem-based formation of structured overlay
- Easy to understand API’s for writing grid applications
- Dynamic scheduler
- Dynamic class loader
The following figure shows the prototype model of our system. The application interacts with the middleware through the programming constructs. Initially the application contacts one of the nodes in the unstructured layer referred as source node, for submitting the task. This node then creates the structured overlay based on application-specific requirements (viz. type of nodes, number of nodes, scheduler type etc). It then chooses a node in the structured overlay (based on taskId) and designates it as the task manager. It then submits the task to the task-manger. The task manager is responsible for efficient execution of the application on structured overlay irrespective of node failures. Finally the results of task execution are sent back to the client application.
A beginner’s introduction to Vishwa usage is available at “Getting Started”. A Vishwa programming tutorial for beginners is available at “Programming Vishwa”. Instructions for executing non-java applications on Vishwa grid is explained in “Executing non-java programs in Vishwa”. For a quick overview of steps involved, refer “Instructions Summary”.
#O8EDK4# 000 sq ft mall based store into 30
Jeans are the best example of how my personal fashion changed. When you're overweight, jeans all fit the same way you're sort of "upholstered". I used to gravitate toward baggier fits that disguised my mass. In recent months, shares in the company have undergone a major sell off because of declining revenues and income. Wet Seal is in the process of conducting a turnaround in its effort to stay competitive in the teenage female retail segment. For investors looking for deep value plays, the sell off seems to have built a good deal of downside protection into this company.
Bell bottoms gave way to parachute pants, leggings and stirrup pants in the early '80s as the disco era of KC and the Sunshine band was replaced by hip hop, pop and heavy metal music, whose artists preferred tight and skinny to flared. After a decade hiatus, bell bottoms were reinvented as boot cut pants in the 1990s. Boot cuts mirrored the flared style of their predecessor, but with a smaller flare and a tighter fit from the knees up.
Karl Lagerfeld is the creative director. Is an Italian fashion label founded by Elio in 1967. The first shop exposed Milan to the styles of Swinging London and American classics such as the T shirt and jeans. If there is one place where you are bound to find cheap perfumes from good brands, it is online. It is very obvious that brick and mortar stores need greater costs to maintain along with the staff, which explains why the prices are invariably lower when you purchase cosmetics online. Cheap perfumes with large discounts can be purchased at online sites of popular brands or at other sites which are more like supermarkets on the internet..
Responsive gels can make these surprising phase changes because they are engineered to respond to "signals" in this case, a change in temperature."The secret is in the chemical reaction between the polymer and the solvent," says John Tauriello of IntelliGel. "The polymer strands can either repel or attract each other [depending on temperature]. When the strands attract, IntelliGel becomes firm.
Remove from the heat and add the remaining butter and vanilla. Let the mixture stand, without stirring, for about 1 hour or until the mixture reaches 110 degrees F. Remove the candy thermometer. I embroideded they veve (symbol) of a voodoo loa (spirit) onto some of my child's clothing. It is the symbol of the trixter spirit, which I found entirely appropriate to her personality. A friend of mine says that this is offensive cultural appropriation. heymaninthebed