Re: Cnc Simulator Pro License 3848
Clotilde Wilks
Q: What will students be able to do while they are there?
A: Students will visit state-of-the-art national museums, experience the famous Oslo Ski jump via zip line or simulator, relax in the Oslo bay in a floating sauna, sample the culinary scene (food market) and more.
The EC3848 high speed slip ring features precious metal brushes and rings. Flying lead wires on the rotating side and solder terminals on the stator side complete the electrical connections. Precision ball bearings and the patented fiber brush design allow operation up to 10,000 rpm without the need for cooling equipment. Fiber brush technology offers several advantages over conventional slip ring contacts including multiple points of contact per brush bundle, low contact force per fiber and low contact wear rates. In addition, fiber brushes do not require lubrication and produce virtually no wear debris.
Density functional calculations with a plane-wave basis set are widely used in materials science. Due to recent developments in high-performance computers, the number of nodes equipped in such computers greatly exceeds the number of atoms included in a typical simulation. Thus, it is becoming difficult to perform calculations efficiently even when only a portion of all nodes are used (e.g., 10%). We have developed a multi-axis decomposition scheme in which both G-vectors and band axes are decomposed and 3D-FFT communicators are folded compactly. This proposed scheme retains the inner-most do-loop lengths sufficiently long and restrains the increased MPI communication costs as the number of nodes increases. In an investigation of a wide-gap semiconductor material (SiC), our PHASE/0 DFT code exhibits efficient and strong scaling (up to 82,944 nodes) even for a relatively small system with 3848 atoms, and demonstrates maximum peak performance of 2.25 PFLOPS for a 25,200-atom system despite employing 3D-FFT.
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