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.
a) Prototype a macro known AP which takes 4 integer parameters n (number of terms), a (first term), l (last term) and Sum (sum of n terms), provided that: Sum = (a+l)*n/2 b)
i want to make final year project in wireless.please help me to decide the topic???????
Explain what is a transaction in SAP terminology. In SAP terminology, a transaction is series of logically linked dialog steps.
Q. Make an instruction execution feasible? What are the functions that a control unit performs to make an instruction execution feasible? Instruction execution is achieved by e
Give the details of excess 3 codes and gray code using four binary digits. Ans: Table of excess 3 codes and gray code using four binary digits Binary
Q. Define the ADDRESSING MODES? The elementary set of operands in 8086 can reside in memory, register and immediate operand. How can these operands be retrievedby various addre
How is Transaction Processing System affect performance of e-commerce sites? Transaction Processing System influences performance of e-commerce sites: Transaction-Processing
Explain the Advantages of High Level Languages? The major advantage of high-level languages over low-level languages is that they are easier to write, read, and maintain. Ultim
In a two stage network there are 512 inlets and outlets, r=s=24. If the probability that a given inlet is active is 0.8, calculate: Switching capacity Given: N =M =512, α
Overclocking is the process of making a computer or component operate faster than the clock frequency particular by the manufacturer by modifying system parameters. One of the most
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd