By year-end 2010, 1.2 billion people will carry handsets capable of rich, mobile commerce providing a rich environment for the convergence of mobility and the Web. There are already many thousands of applications for platforms such as the Apple iPhone, in spite of the limited market and need for unique coding. It may take a newer version that is designed to flexibly operate on both full PC and miniature systems, but if the operating system interface and processor architecture were identical, that enabling factor would create a huge turn upwards in mobile application availability.
“This list should be used as a starting point and companies should adjust their list based on their industry, unique business needs and technology adoption mode,” said Carl Claunch, vice president and distinguished analyst at Gartner. “When determining what may be right for each company, the decision may not have anything to do with a particular technology. In other cases, it will be to continue investing in the technology at the current rate. In still other cases, the decision may be to test/pilot or more aggressively adopt/deploy the technology.”
Tuesday, July 20, 2010
Virtualization for Availability
Virtualization has been on the list of top strategic technologies in previous years. It is on the list this year because Gartner emphases new elements such as live migration for availability that have longer term implications. Live migration is the movement of a running virtual machine (VM), while its operating system and other software continue to execute as if they remained on the original physical server. This takes place by replicating the state of physical memory between the source and destination VMs, then, at some instant in time, one instruction finishes execution on the source machine and the next instruction begins on the destination machine.
However, if replication of memory continues indefinitely, but execution of instructions remains on the source VM, and then the source VM fails the next instruction would now place on the destination machine. If the destination VM were to fail, just pick a new destination to start the indefinite migration, thus making very high availability possible.
The key value proposition is to displace a variety of separate mechanisms with a single “dial” that can be set to any level of availability from baseline to fault tolerance, all using a common mechanism and permitting the settings to be changed rapidly as needed. Expensive high-reliability hardware, with fail-over cluster software and perhaps even fault-tolerant hardware could be dispensed with, but still meet availability needs. This is key to cutting costs, lowering complexity, as well as increasing agility as needs shift.
However, if replication of memory continues indefinitely, but execution of instructions remains on the source VM, and then the source VM fails the next instruction would now place on the destination machine. If the destination VM were to fail, just pick a new destination to start the indefinite migration, thus making very high availability possible.
The key value proposition is to displace a variety of separate mechanisms with a single “dial” that can be set to any level of availability from baseline to fault tolerance, all using a common mechanism and permitting the settings to be changed rapidly as needed. Expensive high-reliability hardware, with fail-over cluster software and perhaps even fault-tolerant hardware could be dispensed with, but still meet availability needs. This is key to cutting costs, lowering complexity, as well as increasing agility as needs shift.
Saturday, June 26, 2010
Pentium Dual-Core
The Intel Pentium Processor Extreme Edition 840 running at 3.2 GHz and Intel 955X Express Chipsets are being built into computers that are now entering the market. This is Intel's first desktop dual-core product supporting Hyper-Threading Technology. Processor features include the following:
· Hyper-Threading Technology: Enables you to run multiple demanding applications at the same time.
· Intel Extended Memory 64 Technology: Provides flexibility for future applications that support both 32-bit and 64-bit computing.
· Dual-Core: Two physical cores in one processor support better system responsiveness and multi-tasking capability than a comparable single core processor. [Source: Intel Dual-core Desktop Processor]
AMD also announced its line of desktop dual-core processors, the AMD Athlon 64 X2 processor family. The initial model numbers in the new family include the 4200+, 4400+, 4600+ and 4800+ (2.2GHz to 2.4GHz).The processors are based on AMD64 technology and are compatible with the existing base of x86 software, whether single-threaded or multithreaded. Software applications will be able to support AMD64 dual-core processors with a simple BIOS upgrade and no substantial code changes. [Source: AMD Dual-core Desktop Processor]
Both companies have also announced or released dual-core processors for servers and workstations as well.
The Pentium Dual-Core brand was used for mainstream x86-architecture microprocessors from Intel from 2006 to 2009 when it got renamed to Pentium. The processors are based on either the 32-bit Yonah or (with quite different microarchitectures) 64-bit Merom-2M, Allendale, and Wolfdale-3M core, targeted at mobile or desktop computers.
In terms of features, price and performance at a given clock frequency, Pentium Dual-Core processors were positioned above Celeron but below Core and Core 2 microprocessors in Intel's product range. The Pentium Dual-Core was also a very popular choice for overclocking, as it can deliver optimal performance (when overclocked) at a low price.
In 2006, Intel announced a plan[1] to return the Pentium trademark from retirement to the market, as a moniker of low-cost Core microarchitecture processors based on the single-core Conroe-L but with 1 MiB of cache. The identification numbers for those planned Pentiums were similar to the numbers of the latter Pentium Dual-Core microprocessors, but with the first digit "1", instead of "2", suggesting their single-core functionality. A single-core Conroe-L with 1 MiB cache was deemed as not strong enough to distinguish the planned Pentiums from the Celerons, so it was replaced by dual-core CPUs, adding "Dual-Core" to the line's name. Throughout 2009, Intel changed the name back from Pentium Dual-Core to Pentium in its publications. Some processors were sold under both names.
· Hyper-Threading Technology: Enables you to run multiple demanding applications at the same time.
· Intel Extended Memory 64 Technology: Provides flexibility for future applications that support both 32-bit and 64-bit computing.
· Dual-Core: Two physical cores in one processor support better system responsiveness and multi-tasking capability than a comparable single core processor. [Source: Intel Dual-core Desktop Processor]
AMD also announced its line of desktop dual-core processors, the AMD Athlon 64 X2 processor family. The initial model numbers in the new family include the 4200+, 4400+, 4600+ and 4800+ (2.2GHz to 2.4GHz).The processors are based on AMD64 technology and are compatible with the existing base of x86 software, whether single-threaded or multithreaded. Software applications will be able to support AMD64 dual-core processors with a simple BIOS upgrade and no substantial code changes. [Source: AMD Dual-core Desktop Processor]
Both companies have also announced or released dual-core processors for servers and workstations as well.
The Pentium Dual-Core brand was used for mainstream x86-architecture microprocessors from Intel from 2006 to 2009 when it got renamed to Pentium. The processors are based on either the 32-bit Yonah or (with quite different microarchitectures) 64-bit Merom-2M, Allendale, and Wolfdale-3M core, targeted at mobile or desktop computers.
In terms of features, price and performance at a given clock frequency, Pentium Dual-Core processors were positioned above Celeron but below Core and Core 2 microprocessors in Intel's product range. The Pentium Dual-Core was also a very popular choice for overclocking, as it can deliver optimal performance (when overclocked) at a low price.
In 2006, Intel announced a plan[1] to return the Pentium trademark from retirement to the market, as a moniker of low-cost Core microarchitecture processors based on the single-core Conroe-L but with 1 MiB of cache. The identification numbers for those planned Pentiums were similar to the numbers of the latter Pentium Dual-Core microprocessors, but with the first digit "1", instead of "2", suggesting their single-core functionality. A single-core Conroe-L with 1 MiB cache was deemed as not strong enough to distinguish the planned Pentiums from the Celerons, so it was replaced by dual-core CPUs, adding "Dual-Core" to the line's name. Throughout 2009, Intel changed the name back from Pentium Dual-Core to Pentium in its publications. Some processors were sold under both names.
All About Dual-Core Processors
Dual-core refers to a CPU that includes two complete execution cores per physical processor. It combines two processors and their caches and cache controllers onto a single integrated circuit (silicon chip). It is basically two processors, in most cases, residing reside side-by-side on the same die.
Dual-processor (DP) systems are those that contains two separate physical computer processors in the same chassis. In dual-processor systems, the two processors can either be located on the same motherboard or on separate boards. In a dual-core configuration, an integrated circuit (IC) contains two complete computer processors. Usually, the two identical processors are manufactured so they reside side-by-side on the same die, each with its own path to the system front-side bus. Multi-core is somewhat of an expansion to dual-core technology and allows for more than two separate processors.
Even without a multithread-enabled application, you will still see benefits of dual-core processors if you are running an OS that supports TLP. For example, if you have Microsoft Windows XP (which supports multithreading), you could have your Internet browser open along with a virus scanner running in the background, while using Windows Media Player to stream your favorite radio station and the dual-core processor will handle the multiple threads of these programs running simultaneously with an increase in performance and efficiency.
Today Windows XP and hundreds of applications already support multithread technology, especially applications that are used for editing and creating music files, videos and graphics because types of programs need to perform operations in parallel. As dual-core technology becomes more common in homes and the workplace, you can expect to see more applications support thread-level parallelism.
Dual-processor (DP) systems are those that contains two separate physical computer processors in the same chassis. In dual-processor systems, the two processors can either be located on the same motherboard or on separate boards. In a dual-core configuration, an integrated circuit (IC) contains two complete computer processors. Usually, the two identical processors are manufactured so they reside side-by-side on the same die, each with its own path to the system front-side bus. Multi-core is somewhat of an expansion to dual-core technology and allows for more than two separate processors.
Even without a multithread-enabled application, you will still see benefits of dual-core processors if you are running an OS that supports TLP. For example, if you have Microsoft Windows XP (which supports multithreading), you could have your Internet browser open along with a virus scanner running in the background, while using Windows Media Player to stream your favorite radio station and the dual-core processor will handle the multiple threads of these programs running simultaneously with an increase in performance and efficiency.
Today Windows XP and hundreds of applications already support multithread technology, especially applications that are used for editing and creating music files, videos and graphics because types of programs need to perform operations in parallel. As dual-core technology becomes more common in homes and the workplace, you can expect to see more applications support thread-level parallelism.
Saturday, September 29, 2007
Network Management
Identify the features of TCP/IP networking.
Identify the features of TCP/IP tools.
Identify the features of the Domain Name System (DNS).
Identify the features of a domain.
Identify the guidelines for maintaining and supporting the Domain Name System (DNS).
Identify the guidelines for maintaining and supporting the Domain Name System (DNS).
Identify the features of Network File System (NFS) common variants.
Identify the guidelines for installing and operating Network File System (NFS) servers.
Identify the features of TCP/IP tools.
Identify the features of the Domain Name System (DNS).
Identify the features of a domain.
Identify the guidelines for maintaining and supporting the Domain Name System (DNS).
Identify the guidelines for maintaining and supporting the Domain Name System (DNS).
Identify the features of Network File System (NFS) common variants.
Identify the guidelines for installing and operating Network File System (NFS) servers.
Create a Personal Screen Saver
For a great way to put your digital photos to work, try creating a slide show presentation for use as a screen saver.
Right–click an empty spot on your desktop, and then click Properties.
Click the Screen Saver tab.
In the Screen saver list, click My Pictures Slideshow.
Click Settings to make any adjustments, such as how often the pictures should change, what size they should be, and whether you’ll use transition effects between pictures, and then click OK.
Now your screen saver is a random display of the pictures taken from your My Pictures folder.
Right–click an empty spot on your desktop, and then click Properties.
Click the Screen Saver tab.
In the Screen saver list, click My Pictures Slideshow.
Click Settings to make any adjustments, such as how often the pictures should change, what size they should be, and whether you’ll use transition effects between pictures, and then click OK.
Now your screen saver is a random display of the pictures taken from your My Pictures folder.
Windows XP Professional Utility: Setup Disks for floppy boot install.
The Windows XP startup disk allows computers without a bootable CD-ROM to perform a new installation of the operating system. The Windows XP startup disk will automatically load the correct drivers to gain access to the CD-ROM drive and start a new installation of Setup. You cannot upgrade from a Windows XP startup disk.Windows XP Home Edition startup disks will not work for Windows XP Professional installations and vice-versa.
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