How dangerous are meteorites? Detailed answer

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How dangerous are meteorites? Detailed answer

Big encyclopedia for children and adults

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How dangerous are meteorites?

Approximately 150 meteorites fall to Earth every year. As a rule, they are found quite by accident. Almost the only documented meteorite fall is that compiled by the American Ann Hodges. In 1954, a 4 kg celestial alien broke through the roof of her home in Alabama and fell to the floor in her room.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Have driving licenses always existed?

No. Until 1910, when such rights were first introduced in Germany, it was enough to buy a car and pay a tax.

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Random news from the Archive

Scaling Up Neural Networks for Deep Learning 15.10.2016

Fujitsu announced the development of a technology that optimizes the use of graphics processing unit (GPU) internal memory to support the increasing scale of neural networks used to improve the accuracy of machine learning.

One method for scaling up deep learning is to distribute a single neural network model across multiple machines and run the computations in parallel. But the large amount of data that must be transferred between computers creates traffic jams, significantly reducing the speed of tasks, Fujitsu explained. In order to take advantage of the full potential of GPUs for high-speed computing, data must be stored in the internal memory of the processors themselves. However, this amount is usually less than the memory capacity of conventional computers, which limits the ability to scale up neural networks.

Fujitsu has developed technology to optimize memory usage and scale up neural networks for single GPU computing. The novelty does not use methods of parallel organization of work, which significantly reduce the speed of reading. The new technology reduces the amount of memory required by reusing resources: it allows you to independently perform calculations to create intermediate error data from weighted data and calculations to create weighted data from intermediate data. When training begins, the structure of each layer of the neural network is analyzed and the calculation order is changed so that the memory area, which contains more data, can be reused, the company noted.

The company used the new technology as part of the Caffe open source deep learning platform, measuring the consumption of internal GPU memory. After starting training, the technology analyzes the structure of the neural network and optimizes the order of execution of calculations and the location of data in memory so that the free memory area can be reused. When used in conjunction with AlexNet and VGGNet, image recognition neural networks used for scientific research, Fujitsu's new technology has increased the scale of the neural network by up to 2 times compared to previous counterparts. As such, the amount of internal GPU memory used has been reduced by more than 40%, according to the company.

Plans to use the new technology from March 31, 2017 as part of the Human Centric AI Zinrai artificial intelligence project. In addition, the company plans to use this technology along with previously unveiled technology for deep learning data processing using GPU parallelization.

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