Showing posts with label memory. Show all posts
Showing posts with label memory. Show all posts

Monday, October 31, 2016

Kognitio steps up in memory analysis

Kognitio steps up in memory analysis


Kognitio steps up in-memory analysis Analytical DBMS: Kognitio Analytical Platform. In-memory DBMS: Kognitio Analytical Platform. Hadoop distribution: None. Stream-processing technology: None. Hardware/software systems: Kognitio Appliance. Kognitios massively parallel processing DBMS competes against Actian Matrix (formerly ParAccel), HP Vertica, IBM PureData System for Analytics (formerly Netezza), and Pivotal Greenplum. The vendor has long supported RAM-intensive deployments and provides the administrative ability to run analyses and processes in memory. Customer Tivo Research Analytics deployed Kognitio with a high RAM-to-disk ratio to ensure fast query response times to report on TV ads viewed in 70 million cable-TV-equipped households. Lately, Kognitio has put an even bigger emphasis on in-memory analysis, and it has developed an integration with the Hortonworks Data Platform that supports in-memory SQL analysis on top of Hadoop. It also offers an appliance and cloud-based services.
Kognitio steps up in-memory analysis

Analytical DBMS: Kognitio Analytical Platform.
In-memory DBMS: Kognitio Analytical Platform.
Hadoop distribution: None.
Stream-processing technology: None.
Hardware/software systems: Kognitio Appliance.
Kognitios massively parallel processing DBMS competes against Actian Matrix (formerly ParAccel), HP Vertica, IBM PureData System for Analytics (formerly Netezza), and Pivotal Greenplum. The vendor has long supported RAM-intensive deployments and provides the administrative ability to run analyses and processes in memory. Customer Tivo Research Analytics deployed Kognitio with a high RAM-to-disk ratio to ensure fast query response times to report on TV ads viewed in 70 million cable-TV-equipped households.
Lately, Kognitio has put an even bigger emphasis on in-memory analysis, and it has developed an integration with the Hortonworks Data Platform that supports in-memory SQL analysis on top of Hadoop. It also offers an appliance and cloud-based services.

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Friday, September 9, 2016

Methods to Fix Data Loss Caused by Memory Card Error

Methods to Fix Data Loss Caused by Memory Card Error


Memory card error messages we may meet

The error messages for memory card may vary, depending upon the cause and type of logical damage. Some of the common error messages are as follows.
» Memory card error
» Card not initialized
» Card error
» Read error / Write error
» No memory card
» The card cannot be used

Methods to fix errors of memory card

How can you fix such errors? Here you can take the following steps to overcome the problem.
» Connect your device to a computer to access the data, instead of view data on the device directly.
» Use a card reader for accessing the data on a computer or try with another data cable.
» If using card reader doesnt work, you need to check the card for errors. It is possible to check media errors using Disk Repair utilities, such as chkdsk in Microsoft Windows and Disk Utility in Mac OS X operating system.
» If the above steps fail to solve your problem, you have no option but to go for formatting, and start memory card recovery immediately.
No matter what kind of memory card errors makes you lose data from your card, you can find it back with third-party memory card recovery software. Memory card recovery software can scan logical damaged memory card and recover the data.
As a Mac user, you can use Wondershare Photo Recovery for Mac, which can recover deleted, formatted, lost and inaccessible files including images, videos and songs from Mac, memory card and other storage media. As a Win user, you can use Wondershare Photo Recovery (for Win).

Choose the right version and download the free trial version for your computer below now.
Download Win Version Download Mac Version
This recovery software aims to find back photos, videos and audio files lost due to errors occurred in your memory card. Its safe and read-only program. Next, lets try the Windows version in steps.

Step1. Connect the memory card to computer

Insert your memory card into the computer or connect the device directly to the computer with a USB cable. Then run the program and click to "Start" the recovery.
memory card error

Step2. Select the card for scan

All drives or disks will detected by your computer will be displayed here, as well as your memory card. Select it and begin to scan it.
fix errors in memory card

Step3. Start card data recovery

When the scanning finishes, all recoverable data including audio, video and photo are listed in the scanning report. Preview and check those you want and hit on the "Recover" to get them back.
how to fix errors in memory card
Then all the data lost due to errors in memory card are back. Dont save them on the card and back up on a safe place.

Cause of Memory card error

The above errors may occur due to various reasons, ranging from virus infection to memory card data structure corruption, most frequent reasons are as follow:
» The memory card is not formatted properly.
» The file system is damaged or the property of the file system is RAW
» Faulty card reader
» Virus or malware infection
» Disk structure corruption of the memory card
» Power surges
» Pulling out the memory card without switching the camera off
» Switching off the camera during write process
No matter you choose which method to overcome above errors, the first thing you should do is to stop saving any new data on it to avoid data overwriting which would make your data lost forever, and find a way to fix the memory card error soon.
Tips:
If you also want to recover documents more than videos, photos and audio files, such as Office documents, PDF files, Archives, Emails, etc. from computer or other devices, you can choose a higher version: Wondershare Data Recovery or Wondershare Data Recovery for Mac, which does more than the Photo Recovery.
Download Win Version Download Mac Version

Free download Wondershare Photo Recovery (Mac version here)
Buy Wondershare Photo Recovery ($34.95) (Mac version here)

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Thursday, September 8, 2016

Full information about Main Memory

Full information about Main Memory




Hello my dear friends, in the last lesson we explain the CPU components in details .Today we will talk about Main memory .What is the main memory? What are the types of main memory? What is the function of main memory? Lets start our lesson now.


 Main Memory
The computer need  to retrieve and remember information they handle just as man needs as well, so you must save the information, either temporarily or permanently. Addressing information then stored in a digital image using the binary system, a system of numerical which uses only two digits (0, 1). In our lives we use the decimal system which uses ten numbers (from zero to 9). 
Units of measurement memory
 Memory capacity is measured in the following four basic units:
Byte: is the amount of memory required to represent a single character bilateral logging, and consists box (byte) of eight digits (bits Bit) any binary number, which can represent the bilateral digits (0, 1).
 Kilobyte: KB per kilo bytes = 1024 bytes
 Megabyte: Mb (shortcut M or MB) = 1024 KB
 Gigabyte: Gigabyte (shortcut G or GB) = 1024 MB
Types of main memory

 Main memory is divided into three types:
  •  RAM :Random Access Memory
  • ROM : Read Only Memory
  • cache memory
 Now we will explain each type in details .Be ready my friends

 RAM: Random Access Memory
Receive the data and program memory unit entry as you receive the results from the arithmetic and logic unit and cached it temporarily (where you lose this contained memory once the electrical separation) so called temporary or volatile memory. The more memory capacity increased the amount of data and the size of the programs that can be traded at the same time.
Types of Ram 

ROM: Read Only Memory
Contain programs and the basic data needed to run the computer and the data and programs had been registered by the manufacturer. They fixed memory are not affected by the interruption of power supply and called read-only memory that can not be written or amendment or cancellation of their contents by the user, but can only read whats inside

Cache memory
Used in the course of operations which is about a cache of very high speed than the speed of main memory. And used for temporary storage of data and instructions required retrieved many times during the operation of the data which helps speed data processing. The estimated capacity of the cache of about 512 KB or more.



 Now we finish our lesson about Ram .I hope all my friends understand this lesson .The next lesson we will talk about storage devices .Thank you
Engineer : Ashraf Mansour 
Egypt
 Previous Lessons
Computer InputUnits 
Computer OutputUnits
CPU

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