SMP And MPP Databases Analysis

SMP And MPP Databases Analysis It has by now become a compulsion to implement Data Warehouses and Decision Support systems in almost all the major organizations. Almost every form of organization is investing heavily in building Warehouses across the multiple functions they implement. Data Warehouses, with their large volumes of integrated, consistent and conformed data, provide the competitive edge by enabling business establishments to analyze past and current trends, monitor current patterns and shortcomings and make informed future decisions. The size of the average Data Warehouse is growing exponentially with each year with organizations looking increasingly to gather every bit of information possible into the warehouse. Modern day ETL tools provide excellent support to integrate from varying and disparate sources like Mainframes, Relational databases, XML files, unstructured documents like PDFs, emails and web pages. It is not just the size of the Data Warehouse that is increasing, but also the utility and the functionality that is expected out of it, that is seeing a multi fold increase. A large number of advanced and high performance Business Intelligence applications Reporting, Dashboards, Scorecards, Data Mining and Predictive modeling are now executed over the Data Warehouse and these applications execute highly complex queries accessing large volumes of data. These requirements the ever growing size of the Data Warehouse and the increasing complexity of the queries executed against it has necessitated the need to look for alternate architectures and implementations of relational databases that can scale up effectively to support efficient querying across large volumes of data with shorter response time and consequently raised the debate of going MPP (Massively Parallel Processing) enabled databases over SMP (Symmetrical multi processors) structured data bases. II. SMP (Symmetrical multiprocessor) Symmetrical multiprocessor systems are single systems containing multiple processors (2 64, or even higher) in which a common pool of memory and disk I/O resources are shared equally. These systems are controlled by a centralized operating system. Sharing of system resources by the processors enables them to be managed more effectively. Very high speed interconnections are deployed across the SMP systems to allow effective interconnection and equal sharing of memory and resources. Apart from high bandwidth, low communication latency is another important property that SMP systems should possess to demonstrate high levels of scalability. This is necessitated by often employed operations in data warehouse such as index lookups and joins that involve communication of small data packets. If the amount of data present in each message is less, then the importance of low latencies is paramount. In SMP , multiple cpus share the same memory, board, I/O and operating system. Each and every CPU acts independently. When one CPU handles a database lookup, other CPUs can perform database updation and perform other tasks. As a result, the device will be able to handle the highly complex networking tasks of todays world in a very easy way. Thus SMP systems too involve a degree of parallelism in that multiple processors can be used to perform mutually exclusive operations in parallel. SMP are relatively cheaper when compared to MPP databases. The cost of upgrading is also lesser because as we scale the number of processors, only an additional processor board needs to be added. Processing power can thus easily and seamlessly be increased by adding extra processors. However SMP have the limitation that they can only scale so far. As all cpus on the same board share a single memory bus, there is a chance of bottlenecks to occur. This bottleneck impacts performance and slows down processing. Instead of placing too many number of CPUs on the same SMP board, designers of high-end network elements can distribute applications across a networked cluster of SMP boards. Each board has its own memory array, I/O and operating system. However this approach begins to complicate the up gradation. Network -specific codes has to be added by network managers to applications. Also as drivers are tightly bound to kernel, moving them involve creation of a new kernel image for each board. III. MPP (Massively parallel processor) Massively parallel systems are composed of many nodes. Each node is a separate computer having a minimum of one cpu and also has its own memory which is local to it. There is a connection also for connecting all the nodes. These type of systems have separate ALUs that runs in parallel fashion. Various standards like MPI are used by nodes for communication. Message passing mechanism is used by nodes for communication. Each node in a massively parallel processor system is accessed with the help of an interconnect technique. The technique supports transfer of data which is at the rate of 13 to 38 MB/sec. Every node in the system contains CPU, disk subsystems and memory. These nodes are self sufficient nodes. The system can be considered as a shared nothing system. Shared nothing indicates that the nodes have their own memory, OS and I/O subsystems, nothing is shared. These systems are designed to have good scalability. Also these systems allow the addition of any number of processors to the system. In cases where partitioning of problems are possible, MPP systems exhibit good performance. In that case there will be no communication among nodes and all the nodes work in parallel fashion. But this partitioning occurs only in rare situations and therefore the performance that MPP systems promises to exhibit is reduced. Such partitioning occurs in the case of ad-hoc queries that are typical to datawarehouses. Also the high scalability that MPP systems offer is limited by data skew or when communication between nodes in the system is highly needed. Single node failure reduces not only the power required for processing but also makes the data located at that node inaccessible. In industries, single-processor nodes which are termed as thin are augmented with multiprocessor nodes which are termed as fat with the help of many processors in SMP configuration. In such cases, the MPP nodes will have many number of processors and less number of nodes. The architecture of MPP includes a group of independent nodes which are of shared-nothing type. Each node has cpu, local disks and memory. Message based interconnect connects all these together. IV. DEPLOYING DATA WAREHOUSE Now that we have discussed in brief the inherent differences between an SMP and an MPP, the below section details the considerations that have to be taken into account while deploying a Data Warehouse. The main consideration when deploying data warehouses are that they should be able to extract meaningful and un-obvious, information from large amounts of data . They can use techniques such as relational intra-query parallelization, on-line analytical processing (OLAP), data mining, and multidimensional databases for the extraction. To perform these analyses, systems that are powerful require access to many times the amount of data that is stored in any one of a companys operational systems. Organizations deploy data warehouses by transferring data periodically from on-line transaction processing (OLTP) databases into data warehouses. These are implemented at fixed schedules via ETL routines that execute at pre-defined intervals in a day. The ETL routines could also execute weekly/monthly and quarterly for sources that provide information at that frequency. Since the databases used in data warehouses are different from the operational OLTP source systems, the ETL from the source systems to the Data warehouse can be a resource-intensive operation involving data extraction, data cleansing and conforming of the data. The amount of storage needed is staggering as well with the entire operations of the company integrated within the Data warehouse sales, orders, operations, finance etc . As the usefulness of this data is not predictable in the beginning, all of the companys data is usually stored in a data warehouse . Data warehouses pose a constant challenge of rapid deployment of application. In the case of OLTP systems the workload is predictable and can be managed with careful tuning. While in the case of data warehouses, they constantly changes whenever new applications are created. Because of their constantly-changing nature, all data warehouses require custom configuration. Factors to consider when deploying data warehouse 1) Complexity of Query: Query complexity ranges from canned queries that are simple to data mining using techniques in artificial intelligence. Canned queries make use of optimized, pre-compiled SQL which may be used in answering questions which are simple and are repeated frequently. Complex data analysis is done using ad-hoc queries which are written in SQL. Also those queries that support operations in data mining are very much complicated . Such queries are not written in SQL and they are difficult to optimize also. Intensive methods like neural nets, genetic programs etc are used by these queries. 2) Workload in Database: Workloads of decision support systems varies from interactive operation to batch operation. Data visualization packages uses access to data warehouse that are interactive. Such packages extract data trends with the help of executing pre-compiled queries. 3) System Architecture: DSS makes use of the technology, parallel processing. Parallel computing architectures range varies in the extent to which memory is hierarchical. Memory is accessed uniformly by symmetric multiprocessors with the help of high-speed buses or crossbar switching technologies. These technologies support point-to point interconnection between processors. Groups of SMP systems are used by clustered approaches. These are linked with interconnection mechanisms which are of slower speed. MPP systems use nodes containing local memory that are accessed through a local high-speed bus. Communication among nodes are carried out through message-based interconnects which are of lower speed. VI. NEED FOR SCALABLE DATA WAREHOUSES The size of a Data warehouse grows rapidly in size and the growth cannot easily be accurately anticipated. Data warehouse implementations often start small and grow as the volume of data and the demands increase. Data warehouses are often deployed with a few processors in the beginning, and can support many times the initial processing capability. Properties When more number of processors are added to an SMP, or nodes are added to an MPP, it is important that system should scale. Ideally, a Data Warehouse system should exhibit two properties to show good levels of scalability speed-up and scale-up. 1) Speed-up: It is the property demonstrated, in which if a job needs one time unit to complete with one processor then it will need 1/N of the time to complete with N processors. For example, consider a job that needs five hours to complete with one processor , it needs only one hour to complete with five processors. Then we say that the system scales well. 2) Scale-up: It is another important property. Consider a system with excellent scale-up. It provides the same level of performance even if the data warehouse size increases through the addition of processors or nodes. For example, when the database size is one terabyte , a batch job that takes five hours to run will take the same time of five hours when the size is two terabytes. In order to maintain scalability, the data should be re re-partitioned across the nodes. This is a time consuming and risky process as databases are terabyte-sized . This step is not required on an SMP. Database administrators valuate scalability by checking whether the systems behavior is predictable when workload intensity increases. If the systems behavior is predictable even when the workload grows, then the system scales well. VIII. CONCLUSIONS Both SMP and MPP server databases can be used for Data warehouse implementations. There are different situations where each can be utilized. The general trade-off point on choosing between the two depends on several factors: 1.) Volume of data expected to be stored in the database. 2.) Expected number of concurrent users. 3.) Complexity of queries to be executed number of joins, aggregations etc to be used. 4.) Average volume of data accessed by each query. 5.) Anticipated growth volumes. When the number of concurrent users is less, and when the volumes are low, SMP are preferred. In fact SMP are preferred for more OLTP like environments. In contrast when the volumes are large, and the number of queries executed is large and involves complex query processing MPP server databases are preferred. These databases on account of their parallel processing capabilities can be utilized to execute complex queries more efficiently and hence offer a natural choice for typical Data warehouse implementations.

Zen and the Art of Motorcycle Maintenance Essay -- Philosophy Religion

Told by the blurb that we have here "one of the most unique and exciting books in the history of American letters," one bridles both at the grammar of the claim and at its routine excess. The grammar stays irreparable. But I have a hunch that the assertion itself is valid. Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values, by Robert M. Pirsig (Morrow), is as willfully awkward as its title. It is densely put together. It lurches, with a deliberate shift of its grave ballast, between fiction and philosophic discourse, between a private memoir and the formulaic impersonality of an engineering or trade journal. As it stands, it is a very long book, but report has it, and fault lines indicate, that a much longer text lies behind it. One hears of an eight- hundred-thousand-word draft and feels perversely deprived of it by the mere sanity and worldliness of the publisher. Zen and the Art is awkward both to live with and to write about. It lodges in the mind as few recent nov els have, deepening its grip, compelling the landscape into unexpected planes of order and menace. The narrative thread is deceptively trite. Father and son are on a motorcycle holiday, traveling from Minneapolis toward the Dakotas, then across the mountains, turning south to Santa Rosa and the Bay. Asphalt, motels, hairpins in the knife-cold of the Rockies, fog and desert, the waters dividing, then the vineyards and the tawny flanks of the sea. Mr. Pirsig is not the first ever to burst: Kerouac has been here before him, and Humbert Humbert, a clutch of novels, films, stories, television serials of loners on the move, lapping the silent miles, toasted or drenched under the big skies, motelling from one neon oasis to the next, and glidin... ... exception. The cracker-barrel voice grinds on, sententious and flat. But the book is inspired, original enough to impel us across gray patches. And as the mountains gentle toward the sea with father and child locked in a ghostly grip-the narrative tact, the perfect economy of effect, defy criticism. A detailed technical treatise on the tools, on the routines, on the metaphysics of a specialized skill; the legend of a great hunt after identity, after the salvation of mind and soul out of obsession, the hunter being hunted; a fiction repeatedly interrupted by, and meshed with, a lengthy meditation on the ironic and tragic singularities of American man- the analogies with Moby Dick are patent. Robert Pirsig invites the prodigious comparison. It is at many points, including, even, the almost complete absence of women, suitable. What more can one say?

Life Define Leadership Essay

What is the leadership? I often ask myself. Leadership is a very abstract concepts, some people don’t have a way to go to real life define leadership, even if he is now running a large company even leadership a country. Because of its category is too big. Through a few weeks of classroom study, I gradually with the own leadership definition, began to try to explore what is leadership. Before work experience, also have to lead a team, but have no real system to learn what the leadership is. Below the article I will explain the leadership in my heart. Leadership is a process of getting things done through people, in the textbook, we begin to contact the Leadership of the theory of knowledge, also in class, through a few small games, such as Marshmallow tower, practice Leadership. The textbook says the three types of leadership, democratic, authoritarian, laissez faire, I think, real leadership is difficult to directly will these separate, and they will fusion these types. In different times and different situation, displays the different style, this is the true leaders. If simple to put a person’s leadership types are classified it is very one-sided. We can only say they are more inclined to what kind. For example, I will talk about my personal experience. When I was a universities’ student in China, I opened an e-commerce company, it called Universities’ cell phone union of China and seven people went into business together for the company, they were students too, I was in them as leader. At first, everyone has great enthusiasm, is with a passion of the cavity work, also rely on my personal charm, because we were both have no money, no experience. Many companies have to work things, such as do website, hair handbill, wait a tired of live. But the work is not ideal, the company does not have profit, after period of time, they began to lose patience, lose passion. They all wanted to give up. Someone suggested, just gave it up, and then strive on useless. And this time, as a team leader, you must stand up, with authoritarian way hold on, in the spirit up motivate them, use the positive spirit to inspire them. Let them think we are a team and never give up. To hold on, we will be successful. This is a very often in the startup problem, if the team leader without certain perseverance and decision making, it is difficult to spend the difficulty. Fortunately, we pass the difficulties, the website has begun to have customers, and someone is looking for us to buy cell phones, gradually have profit. But problems also began, the team started seven of the site’s planning the divergence web site is primarily sell mobile phone, but on the web site are beginning to target customers later, they want to sell other things on the site, and cell phone extraneous matter. This time is to do or do all fine. It is hard to the choice. This time, I had a meeting, and let people talk of the company, through the very democratic way to listen to their views, summarizes the advantages and disadvantages of each, weigh the advantages and disadvantages and website decided to continue to sell mobile phone, the industry bigger, which is conducive to the next development. Through three years of operation, we market distribution in 20 provinces, under the small team have 300 university student, have the same administrative headquarters, we formed a good few department, the finance department, the Marketing Department, human resources department, technology department, administration department. Form a comparison of the regulation of the company. I can say, the company exercise great leadership skills. Also in the actual experience accumulated a lot of experience for leadership. Leadership means responsibility. It’s adventure and often fun, but it always means responsibility. The leader is the guy the others look to get the job done How to use the leadership knowledge . There are many leadership case analysis, or Project, and emphasizes the grasp of the business world now, after the study of the leadership course, we can easily see clear a enterprise under the surface of the actual operation of the means, the enterprise strategy, culture, capital, etc. Of course these to personal future career will not have a direct function, but it is an indispensable exercise. The future of my leadership From the leadership class let me from thinking came out, let me know a completely different world, let me made clear the idea of starting my own business. I believe the leadership value, also hope to have more students, no matter whether have the class and have joined the innovative team . let us together to do some different things, and not waste their own intelligence and one cavity warm blood. You are not a finished leader. No one ever is, not even a president or prime minister. But you are an explorer of the human mind because now you are going to try to learn how to get things done through people. This is one of the keys to leadership. So I will change my style and try different kinds of leadership style in the classroom. Constantly to experience feel, this is advantageous to the development of future better. I have enjoyed this class that can let me know some different things. The teacher has many ways to help the student know some leadership knowledge like the small games. And you are very easy to master this theory, also easy to define. You can use knowledge be applied to real life. Thank you for the teacher.

Drug Addiction and Drug De-Addiction

Drug Addiction and Drug De-Addiction Free Online Research Papers This study was carried out among the 30 patients at Navjyoti Drug De-Addiction Centre, Delhi. India. In the context of the results and interpretations, the conclusions may be drawn as under: Among the subjects studied, all of them were resident of urban areas. There were equal numbers of married and unmarried patients, while one was divorced. It was seen that almost all of the patients had a very happy childhood and only few of them had experienced parental loss and poverty before the age of 15 years. Interesting thing is that every patient wanted to get rid of his habit and nearly each one of them felt bad about their addiction. Few of them had been arrested by the police in the past for their drug influenced and violent behavior. Among the drugs addicted to, Alcohol was the most addictive; nearly 50% patients were addicted to Alcohol. Proxivon (Pain killer capsule) and Smack had claimed second rank while others that had a few takers were Bhang (CANNABIS), Ganja, Corex (Cough Syrup), Forvin and Aphim. Few patients took more than one drug with observed combination like Alcohol with Smack, Ganja and Aphim; Smack, alcohol and bhang; Smack and Aphim; Alcohol with Corex and with ganja. Mental Stress and work load were the reasons for the addiction in some subjects. Major causes of addiction were bad company and most of the addicts had taken to drugs â€Å"Just for fun†. Medical treatment and spare time and boredom were other few. Another important observation was the influence of family members to encourage addiction. Fathers and brothers were found guilty in almost 50% cases; some claimed even uncle to be their patron. Majority of the patients studied had been from nuclear family. The addicts were mainly from lower middle class family with private job with their father either in own business or with no father. Some patients were from the upper middle class families with either their own business or self employment. Some also came from families with government job and they themselves were working at such posts. Only a few patients were students and a couple of them were unemployed. Majority of the patients were adults between the ages of 20 and 40 years. Few were teenagers while some were from the age group above 40. All the subjects were educated with at least12th class and Graduate certificates while some had even Post-graduate qualification. : Santosh Raut. AIBHAS Amity University Block- C, 3rd Floor, Sector-125, Noida, UP India – 201303 Research Papers on Drug Addiction and Drug De-AddictionThe Fifth HorsemanThe Relationship Between Delinquency and Drug UseThe Effects of Illegal ImmigrationEffects of Television Violence on ChildrenInfluences of Socio-Economic Status of Married MalesStandardized TestingMarketing of Lifeboy Soap A Unilever ProductGenetic Engineering19 Century Society: A Deeply Divided EraComparison: Letter from Birmingham and Crito

review of liar liar essays

review of liar liar essays Watching Liar, Liar was effective in showing how todays society lacks honesty. From changing around the facts to just blatantly lying, it showed how much lying is a prt of everyday life. In this movie, Fletcher Reede, played by Jim Carrey, uses lying to win his court cases. What makes him a good lawyer, makes him a bad father as Fletcher finds himself lying to everyone, even his own son Max. Almost every day, Fletcher would promise Max he would pick him up or come over. On Max birthday, Fletcher promised Max he would be at the party. Instead of going to his sons party, he was taking care of business back at his office. Of course, this eventually made such a negative impact on Max that he used his birthday wish to wish that for one day, his dad couldnt tell a lie. The wish actually came true and Fletcher was forced to tell the truth in all that he did. After finally realizing what had happened, he got used to telling the truth and he eventually used the truth to win a big case. During his shenanigans as a lawyer, he had finally realized that when he had twisted the truth and told Virginia Cole, his client, that she was the victim, he was wrong and jeopardized her childrens life with their father. Fletcher finally realized that Virginias ex-husband was a good father, he told the judge that just because he won the case doesnt mean it was right. The judge held Fletcher in contempt and he went to jail. His secretary bailed him out and he rushed to find Audrey and Max who had left for a plane to Boston. He was told that the plane was leaving and he hi-jacked a motorized staircase and he a ttempted to pull-over the plane to stop Audrey and Max from moving. By the time he got the plane to stop, Fletcher struck a barrier and was flying through the air. His son, Max, had come to see Fletcher and Fletcher expressed how he felt. Fletcher real...

Human Capital development Coursework Example | Topics and Well Written Essays - 2250 words

Human Capital development - Coursework Example nerating new sources of wealth in technology including knowledge-intensive sectors, increasing job creation, giving a lead role to the private sector in the economic development process, inculcating a high performance organisational and societal culture with excellence and expanding the regional and global market for the Malaysian services and products. Thrust two is to enhance the capacity from innovation and knowledge and to nurture first class mentality. The second thrust is comprised of improving the access to and quality of the education system at all levels by making national schools the school of choice, by providing tertiary institutions of international standing, by nurturing top quality research and development and innovation and scientific capability, by empowering youth and women, and by fostering a society with strong social and economic values. Thrust three is to address persistent socio-economic inequalities productively and constructively by eradicating poverty, dimin ishing regional disparity, reducing income disparity, reducing employment disparity, reducing wealth and asset disparity, upgrading competitive Bu miputera entrepreneurs, bridging the digital divide and reviewing the performance of past programmes for effectiveness. The fourth thrust is to enhance the standard and sustainability of quality of life by fulfilling housing needs along with improving urban services, enhancing health care services, upgrading the transportation system, introducing sustainability and sufficiency of energy supply, developing the water delivery system, promoting environmental preservation and protection and sustainable resource management, upgrading the role of arts, culture and heritage in society and developing sporting excellence along with a healthier lifestyle. Thrust five is to strengthen the institutional capacity by promoting good governance, promoting development through international cooperation and upgrading the public service delivery system. The

The Transition Process in Hospital Essay Example | Topics and Well Written Essays - 250 words

The Transition Process in Hospital - Essay Example Another main strategy is assisting the patients in managing and preventing their health decline. The nurse should assure the patient of extended home follow-ups to the appropriate time. The care given should be consistent and continuous in order to gain confidence from an individual. As a result, proper guidance is facilitated by the nurses in charge (Silvestri, 2010). In addition, nurses should ensure that the medical records are reconciled and well managed. All information regarding the patient’s health progress while at the hospital should be put into durable and easily accessed records. The administration of medication should be conducted at the indicated time and in the right doses. Therefore, the nurse facilitates the availability of medicine at home to avoid situations where improper treatment occurs. Importantly, points of accountability should be established where care is well offered to the patient. Nurses should use professional care and case management coordination for a fulfilling transitional process that effective. The importance of this process cannot be overlooked as it is key to full recovery. Therefore, prioritizing the steps is a vital factor as they all create a safe and clean transition. Many hospitals use the evidence-based model for efficient patient delivery (Silvestri, 2010).