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Showing posts from December, 2019

Computers

History Of  Computers The  computer  as we know it today had its beginning with a 19th-century English mathematics professor name Charles Babbage. ... Other developments continued until in 1946 the first general-purpose digital  computer , the Electronic Numerical Integrator and  Computer  (ENIAC) was built. First Computers The first substantial computer was the giant ENIAC machine by John W. Mauchly and J. Presper Eckert at the University of Pennsylvania. ENIAC (Electrical Numerical Integrator and Calculator) used a word of 10 decimal digits instead of binary ones like previous automated calculators/computers. ENIAC was also the first machine to use more than 2,000 vacuum tubes, using nearly 18,000 vacuum tubes. Storage of all those vacuum tubes and the machinery required to keep the cool took up over 167 square meters (1800 square feet) of floor space. Nonetheless, it had punched-card input and output and arithmetically had 1 multiplier, 1 divider-...

The Nasa's Supercomputer

The Pleiades aka Nasa's Supercomputer What is the Pleiades? The Pleiades, one of the world's most powerful  supercomputers, represents NASA's state-of-the-art technology for meeting the agency's supercomputing requirements, enabling NASA scientists and engineers to conduct modeling and simulation for NASA projects. This distributed-memory SGI/HPE ICE cluster is connected with InfiniBand in a dual-plane hypercube technology. The system contains the following types of Intel Xeon processors: E5-2680v4 (Broadwell), E5-2680v3 (Haswell), E5-2680v2 (Ivy Bridge), and E5-2670 (Sandy Bridge). The Pleiades is named after the astronomical open star cluster of the same name. System Architecture Manufacturer: SGI/HPE 158 racks (11,207 nodes) 7.09 Pflop/s peak cluster 5.95 Pflop/s LINPACK rating 175 Tflop/s HPCG rating Total CPU cores: 241,324 Total memory: 927 TB 3 racks (83 nodes total) enhanced with NVIDIA graphics processing units (GPUs) 614,400 CUDA cores 0....

5G- advanced, faster and better.

5G- advanced, faster and better. What is 5G? 5G  is an advanced wireless technology that has begun wide deployment in 2019. 4 million Koreans have 5G phones in October 2019, with 5 million expected year-end. China has deployed over 100,000 base stations. 150 million 5G mobile subscribers are expected in 2020 in China. Nine companies are shipping 5G phones in December 2019, driving prices as low as US$470 in China.   Indoor hubs, sometimes called MiFi, are available from Verizon in the US, Optus in Australia, Three in the UK and others. Virtually every major telco in the developed world is deploying or intends to deploy. 5G millimeter wave is the fastest, with actual speeds often of a gigabit or two. Verizon's 28 GHz network is the largest. Frequencies are above 24 GHz and soon up to 72 GHz. The reach is short, so more cells are required. mmWave 5G bands are 400 MHz, allowing much faster speeds than the lower bands of 20-100 MHz.. mmWave has d...