Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
History Of Parallel Computers
The test with and implementations of the utilize of parallelism started year back in the 1950s by the IBM. The IBM enlarges computers also called as IBM 7030 was building in 1959. In the design of these computers, a number of new ideas like overlapping I/O with processing and instruction look ahead were established. A serious advance towards designing similar computers was going ahead with the development of ILLIAC IV in 1964 at the University of Illinois. It had an only control unit but have multiple processing elements. On this machine, at a time, a one operation is executed on dissimilar data items by diverse processing elements. The idea of pipelining was begin in computer CDC 7600 in 1969. It takes pipelined arithmetic unit. In the years 1970 to 1985, the study in this area was decided on the development of vector super computer. In 1976, the CRAY1 was determined by Seymour Cray. Cray1 was a pioneering effort in the enlargement of vector registers. It accessed main memory only for store and load operations. Cray1 never use optimized pipelined arithmetic unit and virtual memory. Cray1 had timer speed of 12.5 n.sec. The Cray1 processor evolved upto a speed of 12.5 Mflops on 100 × 100 linear equation solutions. The next invention of Cray called Cray XMP was introduced in the years 1982-84. It was attached with 8-vector supercomputers and it is used a shared memory also.
Apart from Cray, the giant company developing, Control Data Corporation (CDC), parallel computers of USA, formed supercomputers, the CDC 7600. Its vector supercomputers named Cyber 205 had memory to memory architecture that is, input Vector operands were flow from the main memory to the vector arithmetic unit and the outputs were accumulated back in the main memory. The benefit of this architecture was that It did not maximize the size of vector operands. The drawback was that it essential required a very high speed memory so that there would be no speed mismatch between main memory and vector arithmetic units. Developing such high speed memory is very expensive. The Clock hustle of Cyber 205 was 20 n.sec. In the 1980s Japan also going ahead for manufacturing high performance vector supercomputers. Companies like, Fujitsu, Hitachi and NEC were the core manufacturers. Hitach Established S-810/210 and S-810/10 vector supercomputers in 1982. All these equipment used semiconductor technologies to accomplish speeds at par with Cyber and Cray. But their vectorisers and operating system were inferior than those of American companies.
What are the Steps include constructing a Functional Model Recognize input and output values Build data flow diagrams which shows functional dependencies Explain
What are Different types of Verilog Simulators? There are essentially two types of simulators available. - Event Driven - Cycle Based
PRINCIPLES OF COMPOSITION The principles of composition are the way that the elements of composition are used to achieve a particular purpose. Some of the main principles of co
What is the basic approach of page replacement? If no frame is free is available, find one that is not currently being used and free it. A frame can be freed by writing its co
What do you mean by Electronic Funds Transfer? Electronic Funds Transfer: It’s an electronic payment method which transfers the money value through one bank account to o
Principle of locality: Temporal base locality (locality in time):- If an item is referenced then it will tend to be referenced again soon. Spatial locality (local
Multiple bus architecture: One solution to the bandwidth restriction of a single bus is to simply add extra buses. Consider the architecture indicated in given figure that con
When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that needs repainting.
What data structure is used by an operating system to keep track of process information? Explain A data structure termed as process control block (PCB ) is used by an operat
Q. How can you insert text in dreamweaver? In Dreamweaver, you can type content directly into a layout cell, or you can cut and paste content from another document into a layou
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd