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Does the US Recognize Taiwan as Country?




MIA „Rosiya Segodnya“




Sputnik International



MIA „Rosiya Segodnya“


Sputnik International



MIA „Rosiya Segodnya“

taiwan is in which country, is taiwan part of china, taiwan–united states relations, countries that recognize taiwan 2023, taiwan history

taiwan is in which country, is taiwan part of china, taiwan–united states relations, countries that recognize taiwan 2023, taiwan history

While the United States treated the authorities at Taiwan as the only legitimate government of China back in the early 1950s, Washington changed its stance about two decades later in order to cozy up to Beijing.

A year after then-US House Speaker Nancy Pelosi visited Taiwan, dealing a serious blow to the already strained relations between Washington and Beijing, Taiwanese President Tsai Ing-wen is now expected to visit the United States.
News of this development come as the relationship between the United States and Taiwan appear rather ambiguous, to put it mildly – while the US apparently does not recognize the island as an independent entity at this time, Washington keeps providing large quantities of weapons to Taiwan and essentially pulls all the stops to prevent the island’s possible reunification with China.

When Did Taiwan Leave China?

Following its defeat in the Chinese Civil War, which led to the creation of the communist People’s Republic of China (PRC), the Kuomintang party fled to the island of Taiwan where the party’s leader, Chiang Kai-shek, proclaimed the city of Taipei as the provisional capital of the Republic of China.

Why Taiwan is Not Recognized as a Country by Most States?

Despite Taiwan attempting to assert itself as an independent state, few countries recognize it as such because of the “One China Policy” enforced by Beijing.

Simply put, the People’s Republic of China positions itself as the only sovereign state under the name China, and recognizing Taiwan, which styles itself as “Republic of China,” violates this principle.

Therefore, a country that were to recognize Taiwan as a sovereign state would effectively alienate itself from China, world’s biggest economy at this point.

China Urges US to Stop All Forms of Official Interaction With Taiwan

What Countries Recognize Taiwan?

Despite that, several states in the world currently recognize Taiwan as a sovereign country.

Saint Vincent and the Grenadines

When Did the US Recognize Taiwan?

With the Cold War gaining momentum, the United States did not immediately recognize the PRC and instead regarded Taiwan as the only legitimate government of China.

After the Korean War broke out in 1950, the US was quick to provide financial and military assistance to Taiwan in order to prevent a possible Chinese invasion, eventually even deploying nuclear weapons on the island.

The situation changed, however, when the United States sought to drive a wedge between Moscow and Beijing in the 1970s and formally recognized PRC, moving the US embassy from Taipei to Beijing and shutting down the Taiwanese embassy in the US, as well as withdrawing the US nukes from the island.

September 16, 2022. Chinese President Xi Jinping at an expanded meeting of the Shanghai Cooperation Organization (SCO) Council of Heads of State - Sputnik International, 1920, 13.03.2023

‘One Family’: Xi, Li Tell Lawmakers China to Promote ‘Peaceful Development’ of Taiwan Reunification

While that move resulted in the US being forced to abide by the so-called “One China Policy,” Washington continued maintaining unofficial diplomatic ties with Taiwan and provide it with weapons.

At the same time, the US maintained a “strategic ambiguity,” recognizing PRC as the only legal government of China but refraining from encouraging Taiwan’s return under Beijing’s control.

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How long can humans live? We may not have hit the limit yet

Older people who are alive today may have benefitted from advances in medicine after the second world war

Maliutina Anna/Shutterstock

While human life expectancy has been rising for decades in most countries, the record for the longest-lived person hasn’t been increasing – but that might be about to change.

Using a new way of analysing mortality records, figures from 19 high-income countries suggest that we haven’t yet approached the maximum human lifespan and could see the record start to rise in the next few decades. “We don’t appear to be approaching a maximum limit at the moment,” says the study’s lead researcher David McCarthy at the University of Georgia in Athens.

The longest-lived person in history is recorded as Jeanne Calment, who died aged 122, although there have been recent doubts about her authenticity.

Since Calment’s death in 1997, the record for the oldest living person has been held by people aged between 110 and 120 – and it hasn’t nudged upwards over time. This has led scientists such as Jan Vijg at the Albert Einstein College of Medicine in New York to conclude that there is probably a biological limit on the maximum human lifespan, which he puts at about 115 years old.

But the latest findings suggest that the maximum human lifespan will soon start rising as people born in the first few decades of the 20th century reach very old age.

McCarthy’s team came to this conclusion after studying the age at death of people in various countries in Europe, plus the US, Canada, Australia, New Zealand and Japan, taken from the Human Mortality Database, a record of global birth and death statistics.

The researchers looked at the age of death in groups of people who were born in the same year. Most previous studies have grouped people according to their year of death, but this can obscure trends because it merges people with different lifespans, says McCarthy.

Analysing by birth year found that in those groups born after about 1910, their risk of dying in any given year increased as they aged but to a lesser extent than those born earlier. This suggests that the world record for the longest-lived person will increase in the coming decades as surviving members of these cohorts reach advanced old age, says McCarthy.

For instance, someone born in 1910 hasn’t yet had the chance to reach 120 years, as they would only reach that age in the year 2030.

People in these birth cohorts have benefitted from improvements in medicine since the end of the second world war, says McCarthy. We can’t predict how long that trend might continue from this kind of study, he says.

Vijg, however, says that the analysis depends on an assumption – that the risk of death per year, which for most of our lives rises exponentially with age, starts to plateau after people reach about 105. That assumption isn’t universally accepted, he says.

But Kaare Christensen at the University of Southern Denmark says that there is good support from previous studies for this assumption. “A lot of these projects hinge on models that predict what will happen in the future,” he says. “The truth is nobody knows.”


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North Korean APT43 hackers target organizations to launder crypto using cloud


Cybersecurity researchers have shared details on a North Korean state-sponsored hacking group that’s been operating in the shadows for five years now. 

Called APT43, the group was seen targeting governments, and high-profile individuals in the West (the US, Europe), but also in its neighborhood (Japan, South Korea).

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17 best travel garment bags of 2023 perfect for suits & dresses

Whether you’re headed to San Diego for a work conference or to Boston for your best friend’s wedding, when traveling with formal attire such as suits and gowns, you want to opt for a garment bag. A travel staple decades ago, garment bags have waned in popularity in recent years, but they’re making a comeback for one big reason — they work!

Available in a slew of sizes, styles and price points, all good travel garment bags should keep your clothes flat, clean and wrinkle-free — rather than, say, folded tightly in a compression packing cube. And most airlines consider garment storage bags a carry-on item, thus saving you the hassle and cost of checking a bag. But the real upside is that upon arriving at your final destination, your wardrobe will be crease-free and ready to go — and not desperately in need of ironing.

We’ve rounded up some of the most highly rated garment bags on the market, from traditional carry-on varieties to duffels and rolling options.

Traditional in its tri-fold design, this garment bag from Calpak is diminutive enough to fit into your luggage but durable enough to travel on its own, too. Made from water-resistant ripstop nylon, the Compakt is chock full of interior and exterior pockets and comes in light pink, walnut, black, orchid, daisy and leopard prints.

We can always count on luggage maker Away to give us a well-made, highly functional product — and that includes this garment bag. Made from water-resistant nylon, the bag can accommodate two suits or three full-length dresses and has interior zippered pockets for shoes and accessories, as well as a big exterior pocket for easy access to travel-day items. We love the zip-out hook for hanging your garments at your final destination, as well as the padded shoulder strap for easy transport. Away also makes a thinner garment sleeve that fits perfectly into its Bigger Carry-On.

Pretty much everything by Peter Millar is refined, and that includes this handsome garment bag. Made from water-resistant nylon, the lightweight bag has zippered interior pockets and heavy-duty handles with leather accents — perfect for anyone looking to travel in style.

Speaking of style, this garment bag from MZ Wallace has loads of it. Awash in the brand’s signature quilted texture, the bag has a sleek silhouette with one main compartment, one exterior compartment and a zip-top closure.

One of Amazon’s best-selling garment bags, the Zegur is a favorite because it’s packed with pockets galore (zippered, mesh and Velcro), shoe slots, three clothing tie-downs and even a luggage strap for easy transport on your rolling suitcase. We also love the big front pocket that has tons of space for your business cards, pens, notepads and snacks. Our favorite detail, however, is the price. At just $60, you can add this travel essential to your must-bring list.

Since launching luggage brand Beis in 2018, actress Shay Mitchell has been giving the masses stylish backpacks, suitcases and more — all of which rake in thousands of positive reviews and tags on Instagram. And this garment bag is no different. Sexy in design, the bag has three built-in felt hangers, a detachable shoulder strap and plenty of pockets for shoes, toiletries and more.

Amazon knows a thing or two about making quality, affordable products, and never is that more apparent than with its garment bag for travel. Clocking in at just $40, this bag is a workhorse with more than 3,000 positive reviews. Top details include two clothing tie-down buckles, multiple mesh pockets and a big ol’ organization pocket on the exterior for handy access to headphones, pens and more.

Minimalist and sleek, the Degeler garment bag weighs just over 1 pound and is packed with tons of interior and exterior pockets, in addition to an ultra-sturdy titanium hanger that can accommodate three jackets and has nifty clamping brackets for securing up to three pairs of pants. Made from water-resistant, durable nylon, the bag also has room for a 15-inch laptop.

Perfectly preppy, this vintage-inspired garment bag from Pottery Barn is also about the details — we’re loving the waxed canvas exterior, the vegan leather handles and that satin pinstripe lining. In addition to its main zippered compartment, the bag also has two mesh storage pockets and a button closure. For less than $100, this is a great option for arriving in style and with wrinkle-free clothes.

Well-known for its sister product The Travel Pack, which was launched via Kickstarter in 2017, Nomatic has since grown its product roster to include this sleek garment bag. Outfitted with a hook for hanging, the bag can hold up to three suits and has smart stash pockets for everything from sunglasses and ties to shoes. The bag is also water-resistant and has a luggage sleeve.

Boasting more than 7,000 positive reviews and a 4.5-star rating, this garment duffel is beloved on Amazon because of its smart design, plentiful pockets and small size when zipped into its duffel format. Made from water-resistant, rip-proof nylon, the bag also has a detachable strap and comes in six colors and patterns. Oh, and we’re not mad at that price tag of just more than $40 when it’s on sale, either!

Monogramming masters Mark & Graham have scored again with the Commuter, which transforms from a suit garment bag into a duffel with a couple of quick zips. Embedded with eight pockets — of the zippered, snapped and open variety — the twill-washed nylon bag has handsome leather details and an adjustable shoulder, and can be monogrammed for an additional $12.50.

If price is no object, let us introduce you to Bennett Winch, a line of handmade-in-England travel accessories that feature exquisite craftsmanship and luxe materials. The Holdall is innovative in that it includes both a lie-flat garment compartment and a detachable cylindrical bag, which the garments wrap around — and the units can be used together or separately. The Holdall is oozing with fancy details like waterproof canvas, Italian leather and solid brass hardware.

Rolling garment bags are a thing, people, and we’re on board with this concept! Taking the heavy lifting off our shoulders, this option from Travel Select has more than 14,000 positive Amazon reviews, and for good reason. It offers the space of a traditional rolling suitcase, but with the internal design of a garment bag — the piece is the ultimate twofer. It comes loaded with zippered pockets, clothing tie straps, a sturdy center hook for hangers and durable inline skate wheels for easy maneuvering.

This sleek rolling garment bag from luggage maker Delsey is packed with interior organization bells and whistles like foamed bars, corner pockets and shoe pockets. The roomy bag has a built-in hook for hanging over a door or on a rod and an extender panel that can accommodate longer hanging items.

You’re going to pay a premium for a Briggs & Riley piece, but trust us, the premium is worth it. Made from a ballistic nylon fabric that is water- and abrasion-proof, the garment roller can accommodate several suits and it has myriad internal pockets for shoes, ties and all your other must-haves and an organizational front pocket for keeping your keys, phone and more handy. Want a bigger, checked option? Briggs & Riley has you covered with the Large Spinner.

Perfect for short trips, this lightweight rolling garment bag from Travelpro is both water- and stain-resistant and has a front-flap opening allowing for quick access. Tons of pockets, high-performance wheels and a luggage sleeve make the piece a winner.

Looking for a new travel credit card? Check out CNN Underscored’s list of the best credit cards currently available.

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Scientists uncover ice-age shift in Pacific Ocean circulation


An ensemble of marine fossil 14C/C and a first-order test of fidelity.(A) Locations for all deep-sea proxy seawater 14C/C measurements used in this study, all of which are below the neutral density surface (γn) = 27.5 kg m−3 (below the depth of intermediate water masses). Open symbols are mid-depth sites above or on the neutral density surface γn = 28.0 kg m−3. Closed symbols are γn > 28.0 kg m−3 “bottom water” sites. Diamonds are sites with new data provided in this study. The basin colors in (A) identify the location of measurements in (B), which compares preindustrial seawater dissolved inorganic carbon (DIC) from and all compiled proxy 14C/C (differenced from the contemporaneous atmosphere) over the past 4 ka (see fig. S1 for additional age ranges). The dashed line in (B) is 1:1, the solid line is the slope, and the red envelope is 68 and 95% error range. Credit: Science Advances (2022). DOI: 10.1126/sciadv.abq5434

The overturning circulation of the Pacific Ocean “flipped” during the last ice age, altering the placement of ancient waters rich in carbon dioxide, according to Earth system scientists at the University of California, Irvine.

In a paper published in Science Advances, the researchers suggest that this shift in the 3D churning of such a large basin must have enhanced the sequestration of CO2 in the , thereby lowering the amount of the in ice-age Earth’s atmosphere. They uncovered this transposition by analyzing traces of , or radiocarbon, in thousands of fossil sediment samples from around the world, some dating back as far as 25,000 years.

“It’s intuitive to think that the Pacific would play a major role in climate regulation during the last glacial period—it’s huge, double the volume of the Atlantic—but we didn’t have a lot of data to say that previously,” said lead author Patrick Rafter, UCI assistant researcher in Earth system science. “Our study has established a benchmark of radiocarbon measurements of the major ocean basins, and having compiled and analyzed that data, we can confidently say that changing overturning circulation in the Pacific is consistent with the ocean being a significant driver of lower greenhouse gases during the last ice age.”

UC Irvine Earth system scientists uncover ice-age shift in Pacific Ocean circulation
“Our study has established a benchmark of radiocarbon measurements of the major ocean basins, and having compiled and analyzed that data, we can confidently say that changing overturning circulation in the Pacific is consistent with the ocean being a significant driver of lower greenhouse gases during the last ice age,” says lead author Patrick Rafter, UCI assistant researcher in Earth system science. Credit: Steve Zylius / UCI

He said carbon-14 is the isotope of choice for researchers hoping to reconstruct the relationship of the deep sea and the atmosphere over long time scales. “Radiocarbon is produced in the atmosphere when cosmic ray neutrons hit nitrogen, and it becomes carbon dioxide after chemical reactions with oxygen. After this, it enters the ocean exactly like regular CO2, because it is CO2,” Rafter said. “That’s what makes carbon-14 a powerful and useful tracer for how the ocean interacts with the atmosphere.”

For this project, he and his colleagues employed techniques perfected over decades in UCI’s Department of Earth System Science and worked with cutting-edge machinery custom-designed to perform this type of carbon dating.

Beginning in the 1990s, professors Ellen Druffel and Sue Trumbore, founding faculty members in the department, were determined to make UCI a world-leading center for the use of carbon-14 in geosciences research. Key steps included obtaining funding for what ultimately became the W.M. Keck Carbon Cycle Accelerator Mass Spectrometer Facility and the hiring of John Southon, UCI researcher in Earth system science, to oversee lab operations.

“This kind of synthesis has been tried before but not on anything like the scale of our team’s work, which involved a huge data mining effort as well as production of new results,” said Southon, study co-author. “The payoff is that for the first time there are sufficient data to show clear evidence that the glacial ocean circulation was not just a slower version of today’s but radically different.”

UC Irvine Earth system scientists uncover ice-age shift in Pacific Ocean circulation
“This kind of synthesis has been tried before but not on anything like the scale of our team’s work, which involved a huge data mining effort as well as production of new results,” says study co-author John Southon, UCI researcher in Earth system science. “The payoff is that for the first time there are sufficient data to show clear evidence that the glacial ocean circulation was not just a slower version of today’s but radically different.”. Credit: Steve Zylius / UCI

The team collected marine fossils from all over the world, sand grain-sized bits that were identified by more than 20 Earth system science undergraduates staffing a bank of microscopes in Rafter’s Croul Hall laboratory space. Then these calcium carbonate shells were converted into graphite, a pure form of carbon.

This material was introduced to the Earth system science department’s accelerator mass spectrometer to yield precise measurements of radiocarbon—values equal to the seawater the fossils lived in. With this data in hand, the next step was “a bit like assembling a puzzle in which we had to combine our research with previous studies,” according to Rafter.

“There had been work done before on the North Atlantic, which made sense because that’s an important region where the ocean breathes in the atmosphere, where a great deal of enters the ocean,” he said. “We added our own analysis of fossil radiocarbon from sediment cores in the Pacific and Southern oceans so we could interpret all the major ocean basins together for the past 25,000 years, which had not been done before.”

Rafter said that this new knowledge about the relationship between the deep sea and the atmosphere going back into the last ice age can help oceanographers and Earth system scientists fully comprehend the role of the ocean in controlling climate warming and cooling now and into the future.

Joining Rafter and Southon on this project were researchers from France’s University of Paris-Saclay, Massachusetts’ Woods Hole Oceanographic Institution, Scotland’s University of St. Andrews, Germany’s Kiel University, UC Santa Cruz, UC Santa Barbara, Oregon State University and the California Institute of Technology.

More information:
Patrick A. Rafter et al, Global reorganization of deep-sea circulation and carbon storage after the last ice age, Science Advances (2022). DOI: 10.1126/sciadv.abq5434

Scientists uncover ice-age shift in Pacific Ocean circulation (2023, March 29)
retrieved 29 March 2023
from https://phys.org/news/2023-03-scientists-uncover-ice-age-shift-pacific.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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First lady Jill Biden to visit Nashville for candlelight vigil honoring school shooting victims


New details emerge in Nashville shooting

Details emerge about efforts to warn police moments before Nashville school shooting


Washington — First lady Dr. Jill Biden will travel to Nashville to participate in a candlelight vigil on Wednesday evening honoring the six victims of the shooting at the Covenant School earlier this week.

White House press secretary Karine Jean-Pierre confirmed Biden’s visit during the White House press briefing. She will travel to Nashville after a trip to Greene County, Ohio, where the first lady is meeting with military families as part of her Joining Forces initiative.

“As you heard the president say throughout this week, we continue to call on Congress to act to pass an assault weapons ban, and take additional actions to make our kids and communities safer,” Jean-Pierre told reporters.

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These JBL Noise-Canceling Earbuds Are Only $50 Right Now


Photo: cypopcolour (Shutterstock)

Woot is having another of their massive sales, but one specific deals is sticking out among the rest: The JBL Live Free NC+ True Wireless earbuds are currently 67% off their $150 listing price. For $50, you can get this pair of noise canceling Bluetooth earbuds from now until April 1 (or while supplies last). But should you?

Are the JBL Live Free NC+ earbuds a good deal?

According to Honey’s price history, Woot’s $50 price point matches Amazon’s Black Friday deal, and the price has not dropped below $100 since early January. If you’re in the market for some new noise-cancelling earbuds that don’t break the bank, it’ll be hard to beat this deal.

How good are the JBL Live Free NC+ earbuds?

JBL Live Free NC+ TWS Earbuds Review | All-Around Contender!

According to Rtings.com’s review, the earbuds’ highest rank is in the sports/fitness category because they are comfortable, lightweight, secure, and portable. They did the worst in the phone call category because of the quality of its mic. So, if you’re planning to use them for lots of phone calls or Zoom meetings, you might want to look elsewhere.

The earbuds market a seven-hour battery, but Rtings.com say they really last 5.4 hours, not counting the two additional charges the portable charging case give you. The earbuds are sweat- and waterproof, per their marketing, and allow you to use only one earbud if you want—and doing so would enable you to extend the battery life because you can charge one earbud while you use the other one.

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At least 38 killed in fire at migrant detention center in Mexico near U.S. border


At least 38 killed in fire at migrant detention center in Mexico near U.S. border – CBS News

Watch CBS News

Family members of the 38 people killed in a fire at a migrant holding facility in Ciudad Juarez, Mexico, near the U.S. border are demanding answers from the Mexican government. Jonathan Vigliotti reports on the deadliest incident inside a Mexican immigration facility in recent memory.

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Scientists share ‘comprehensive’ map of volcanoes on Venus—all 85,000 of them


Credit: Pixabay/CC0 Public Domain

Intrigued by reports of recent volcanic eruptions on Venus? WashU planetary scientists Paul Byrne and Rebecca Hahn want you to use their new map of 85,000 volcanoes on Venus to help locate the next active lava flow. Their study was posted online ahead of print in Journal of Geophysical Research: Planets.

“This paper provides the most comprehensive map of all volcanic edifices on Venus ever compiled,” said Byrne, an associate professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis. “It provides researchers with an enormously valuable database for understanding volcanism on that planet—a key planetary process, but for Venus is something about which we know very little, even though it’s a world about the same size as our own.”

Byrne and Hahn used from NASA’s Magellan mission to Venus to catalog volcanoes across Venus at a global scale. Their resulting database contains 85,000 volcanoes, about 99% of which are less than 3 miles (5 km) in diameter.

“Since NASA’s Magellan mission in the 1990s, we’ve had numerous major questions about Venus’ geology, including its volcanic characteristics,” Byrne said.

“But with the recent discovery of active volcanism on Venus, understanding just where volcanoes are concentrated on the planet, how many there are, how big they are, etc., becomes all the more important—especially since we’ll have new data for Venus in the coming years.”

“We came up with this idea of putting together a global catalog because no one’s done it at this scale before,” said Hahn, a graduate student in earth and planetary sciences at Washington University, first author of the new paper. “It was tedious, but I had experience using ArcGIS software, which is what I used to build the map. That tool wasn’t available when these data first became available back in the ’90s.

“People back then were manually hand-drawing circles around the volcanoes, when I can just do it on my computer.”

“This new database will enable scientists to think about where else to search for evidence of recent geological activity,” said Byrne, who is a faculty fellow of the university’s McDonnell Center for the Space Sciences. “We can do it either by trawling through the decades-old Magellan data (as the new Science paper did) or by analyzing future data and comparing it with Magellan data.”

Byrne and Hahn’s new study includes detailed analyses of where volcanoes are, where and how they’re clustered, and how their spatial distributions compare with geophysical properties of the planet such as crustal thickness.

Taken together, this work provides the most comprehensive understanding of Venus’ volcanic properties—and perhaps of any world’s volcanism so far.

That’s because, although we know a great deal about the volcanoes on Earth that are on land, there are still likely a great many yet to be discovered under the oceans. Lacking oceans of its own, Venus’ entire surface can be viewed with Magellan radar imagery.

Although there are volcanoes across almost the entire surface of Venus, the scientists found relatively fewer volcanoes in the 20-100 km diameter range, which may be a function of magma availability and eruption rate, they surmise.

Byrne and Hahn also wanted to take a closer look at smaller volcanoes on Venus, those less than 3 miles across that have been overlooked by previous hunters.

“They’re the most common volcanic feature on the planet: they represent about 99% of my dataset,” Hahn said. “We looked at their distribution using different spatial statistics to figure out whether the volcanoes are clustered around other structures on Venus, or if they’re grouped in certain areas.”

The new volcanoes dataset is hosted at Washington University and publicly available for other scientists to use.

“We’ve already heard from colleagues that they’ve downloaded the data and are starting to analyze it—which is exactly what we want,” Byrne said. “Other people will come up with questions we haven’t, about volcano shape, size, distribution, timing of activity in different parts of the planet, you name it. I’m excited to see what they can figure out with the new database!”

And if 85,000 volcanoes on Venus seems like a large number, Hahn said it’s actually conservative. She believes there are hundreds of thousands of additional geologic features that have some volcanic properties lurking on the surface of Venus. They’re just too small to get picked up.

“A volcano 1 kilometer in diameter in the Magellan data would be 7 pixels across, which is really hard to see,” Hahn said. “But with improved resolution, we could be able to resolve those structures.”

And it’s exactly that kind of data that future missions to Venus will acquire in the 2030s.

“NASA and ESA (the European Space Agency) are each sending a mission to Venus in the early 2030s to take high-resolution radar images of the surface,” Byrne said. “With those images, we’ll be able to search for those smaller volcanoes we predict are there.

“This is one of the most exciting discoveries we’ve made for Venus—with data that are decades old!” Byrne said. “But there are still a huge number of questions we have for Venus that we can’t answer, for which we have to get into the clouds and onto the surface.

“We’re just getting started,” he said.

More information:
Rebecca M. Hahn et al, A Morphological and Spatial Analysis of Volcanoes on Venus, Journal of Geophysical Research: Planets (2023). DOI: 10.1029/2023JE007753

Scientists share ‘comprehensive’ map of volcanoes on Venus—all 85,000 of them (2023, March 29)
retrieved 29 March 2023
from https://phys.org/news/2023-03-scientists-comprehensive-volcanoes-venusall.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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Intel Linux Kernel Optimizations Show Huge Benefit For High Core Count Servers


Earlier this month I wrote about Intel engineers working on more big optimizations to the Linux kernel with a focus on enhancing the kernel’s performance at high core counts. The numbers shared then were very promising and since then I’ve had more time looking at the performance impact of Intel’s stellar software optimization work and its impact on real-world workloads. Here is a look at how Intel’s pending kernel optimization patches are a huge deal for today’s high core count servers.

A teaser for the article ahead… With Intel CPU core counts going up, so are the Intel efforts to optimize the Linux kernel for greater scalability.

See the article earlier this month for what set of this latest benchmarking storm: Intel Continues With More Big-Time Optimizations To The Linux Kernel. Following that, I set off to run many different benchmarks for seeing how these optimization patches become extremely important with today’s high core count servers.

This article is looking at Intel’s scalability improvements to the Linux kernel using their Sapphire Rapids reference server with two Xeon Platinum 8490H processors.

For concisely looking at the cumulative impact of their pending work, I used Intel’s latest Clear Linux build that has those aforementioned patches and their other in-progress tuning/concurrency work. I compared the performance of Intel’s Clear Linux optimizations against that of Ubuntu 23.04 in its current development state. But I didn’t just do a 2-way comparison but rather tested each distro/kernel across varying thread counts to show how Intel’s kernel optimization effort is really paying off for high core count servers.

Intel Linux kernel optimizations

This round of testing was carried out on both operating systems using Intel’s Eagle Stream server with two flagship Intel Xeon Platinum 8490H “Sapphire Rapids” processors. From there both operating systems / kernels were tested at 240 threads (the default capacity; 120 cores + SMT for the two 8490H processors), 120 threads (disabling SMT/HT), 60 threads, 30 threads, 15 threads, 8 threads, and 4 threads for looking at the scaling performance across a wide variety of workloads. At 120 threads and lower it was all physical cores being tested with Hyper Threading disabled.

Clear Linux, Ubuntu SPR Scaling

The results of this Intel kernel tuning effort really speak for themselves… Not only does it mean a huge win for Intel Xeon Scalable servers with dozens of cores or hitting 200+ threads in a dual socket server, but these optimizations apply for AMD hardware too… Next week I will have up similar benchmarks with AMD EPYC Genoa where the results are even more compelling at 384 threads. With that said, let’s get right to the results.

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