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RAMC: Remote Access Memory Channels over HPE Slingshot
Announce Type: new Abstract: In this paper, we present Remote Access Memory Channels (RAMC), an explicit one-sided communication library designed to leverage the capabilities of HPE Cray Slingshot network hardware. Existing one-sided communication frameworks, such as MPI RMA and OpenSHMEM, rely on monolithic shared memory models that introduce scalability and usability challenges. These frameworks often assume symmetric memory regions or require blocking collective operations for window...
NASA’s Psyche spacecraft uses Mars as a giant slingshot toward a mysterious metal world
NASA’s Psyche spacecraft just used Mars as a giant gravitational slingshot to continue its journey toward a strange metal rich asteroid. The close flyby boosted the spacecraft’s speed by about 1,000 mph while also producing rare crescent images of Mars glowing through its dusty atmosphere.
Can solar sails really send humans out into interstellar space?
Can solar sails really send humans out into interstellar space? "I think these are not far-out type of ideas; they are not really futuristic ideas that we are talking about." If humankind ever travels to distant stars, we might sail there — and it might be sooner than you think.
Intelligence chief of Iranian Revolutionary Guard killed
The intelligence chief of Iran's powerful Revolutionary Guards Corps, general Majid Khademi, has been killed in a US-Israeli air strike. An Iranian statement said he'd been "martyred" in an attack at dawn. His unit had been accused by the United States of violently suppressing anti-government protests in January.
Human-Like Neural Nets by Catapulting
Human-like Neural Nets by Catapulting Speculative proposal to create artificial neural nets with human-like performance by high-learning-rate/regularization training of overparameterized NNs to trigger catapulting/grokking. Over-parameterization as a route to true generalization would resolve many outstanding mysteries of artificial versus natural intelligence. There are many mysteries about deep learning and human intelligence, but we could describe the biggest anomaly this way: why are...
Show HN: Gravity – interactive solar-system simulator, from Newton to Einstein
Just for fun and self education, I've built this over a weekend to teach myself why orbits exist, not just show planets going around. Something that was never clearly explain to me in school. It opens with a guided tour that builds the idea up step by step: two bodies and the equal/opposite force, inertia (the Sun is removed and Earth just drifts straight), then "an orbit is falling and continuously missing," cosmic velocities with a little rocket, Voyager 1 & 2's real gravity assists (the...
Artemis III crew revealed: NASA announces astronauts for 'one of history's most complex missions'
Artemis III crew revealed: NASA announces astronauts for 'one of history's most complex missions' NASA's Artemis III crew has been revealed. The astronauts will launch into low Earth orbit next year to test docking with commercial lunar landers being developed by SpaceX and Blue Origin. NASA has named the crew for its upcoming Artemis III mission, which the space agency says will be one of the most complex missions in history.
NASA's Psyche spacecraft returns unfamiliar views of a familiar world
Not quite halfway through a six-year sojourn through the Solar System, a NASA spacecraft used a close encounter with Mars last week as a dress rehearsal for its arrival at the Solar System's largest metal asteroid in 2029. The Psyche mission launched more than two-and-a-half years ago, in October 2023, from Kennedy Space Center, Florida, to kick off a journey of some 2.2 billion miles (3.6 billion km) to reach its unexplored namesake, the asteroid Psyche. The robotic research mission got an...