Archive for the ‘Uncategorized’ Category

Q: Can You Double-Pattern Rather Than Use EUV? A: You Don’t Want To

Sunday, April 10th, 2022

This is going to be pretty esoteric for many of my readers, but in previous semiconductor posts covering ASML, some commenters have suggested that fabs can do multi-patterning for smaller nodes rather than having to use ASML’s extreme ultraviolet stepper. The following video explains why, below a certain threshold, no, you really can’t.

I’m not going to summarize every point, but the largest takeaway is that multi-patterning is computationally prohibitive. Double-patterning splits a single mask into two masks, each of which only create half of the mask pattern on the die. Double-patterning was fine for a while, but triple patterning and self-aligned double-patterning start making finding optimal solutions to the mask splitting problem exponentially more difficult.

Take a square. A square has four nodes in it. With double patterning, each of the two masks handle opposing sides of the square. And with this four-node shape, there are two double patterning options available for coloring. The EDA software thus has to check through them for design rule violations and whatnot. With triple patterning, the number of variations explodes exponentially. For that same square four node structure, triple patterning has 18 variations rather than just two with double patterning. A five node structure, 30. And so on. A semiconductor design can have hundreds of different nodes and design variations. The software needs to check through at least a good portion of these. This problem is not solvable in polynomial time. In other words, for you computer science nerds out there, it is an NP complete problem.

And then there’s the cost. “Depending on whose cost model you consult, [10nm]’s triple patterning makes its lithography module 3.85x higher than [28nm].” And the non-EUV 7nm node required triple-patterning and something called “self-aligned quadruple patterning.” And on Intel: “Brian Krzanich has said that in certain cases the company needs to use quad (4x), penta (5x), or hexa (6x) patterning for select features, as they need to expose the wafer up to six times to “draw” one feature. I am not super surprised that it wouldn’t yield. No wonder GlobalFoundries ditched their 7nm node.”

And this summary glosses over big differences between different fab technologies on different companies. TSMC’s 7nm isn’t the same as Intel’s 7nm.

Anyway, all this goes a long way to explain: Multi-patterning is much more painful than simply ponying up the cost for an ASML EUV stepper. And if you want to do 6nm, you have to use EUV.

“Agonizing Penis Pain”

Wednesday, January 19th, 2022

Hey folks, there’s an exciting new Flu Manchu side effect: “agonizing penis pain:”

A man’s agonising penis pain was blamed on Covid infection, as docs warned of the rare side effect.

Writing in a medical journal, the Iranian team described how the virus led to blood clotting in the poor man’s shaft.

For most men (outside of an extremely narrow band of S&M fetishists) “agonizing penis pain” is generally considered “undesirable.” Mao Tze Lung is just the gift that keeps giving.

So I guess guys should take the vaccine to avoid this rare side effect?

Not so fast, bucko! When it comes to rare adverse effects in the male groinological area, searching the VAERS database for COVID-19 and “penis” brings up 11 records, including such phrases as “Penile pain,” “Penile vein thrombosis” and “penile haemorrhage.” A veritable buffet of “Do Not Want!”

It’s like a Monty Python skit.

John Cleese: All right, time for your vaccine!
Eric Idle: Is it safe?
John Cleese: Oh, totally safe, totally safe. (under his breath) Except for the horrifying side effects…
Eric Idle: What?!
John Cleese: Nothing!
Eric Idle: What side effects?
John Cleese: Nothing to worry about! Just a tiny number of cases of agonizing penis pain.
Eric Idle: What?!
John Cleese: Really, it’s only very small number of cases of profuse bleeding and absolutely excruciating pain in your standing hampton! Now roll up your sleeve!
Eric Idle: But I don’t want to experience agonizing penis pain!
John Cleese: Well, I don’t want to be allergic to soft cheese, but there’s just nothing to be done about it! It’s science! Now roll up your sleeve!

You’re damned if you do and damned if you don’t.

(Hat tip: Stephen L. Miller on Twitter.)

Bowled Over

Monday, December 27th, 2021

In a followup to A&M pulling out of the Gator Bowl, there have been three outright bowl cancellations:

The 2021 Military Bowl has been canceled for the second year in a row. Boston College was forced to pull out of its matchup against East Carolina, scheduled for Monday, due to a combination of COVID-19 cases and injuries, according to 247Sports’ Stephen Igoe. Additionally, the Fenway Bowl, featuring SMU and Virginia, has been canceled after positive cases on the Cavaliers’ roster. The game was set to be the final one for coach Bronco Mendenhall at UVA after he resigned from the program earlier this month

The bowls are the second and third outright cancellations of bowl season, joining Hawaii pulling out of the Hawaii Bowl against Memphis on Christmas Eve. Additionally, Texas A&M was forced to pull out of the Gator Bowl due to COVID issues, but Rutgers stepped up to take the Aggies’ place as a 5-7 squad. Last season, 18 bowls were canceled by the pandemic.

The matchup is the second straight bowl game canceled for SMU, though the Mustangs would have been without a bulk of the coaching staff after former coach Sonny Dykes left for TCU. The Cavaliers, meanwhile, were searching for their third winning season in the last four years under Mendenhall before new coach Tony Elliott takes over the program.

For East Carolina, the cancellation is especially disappointing. The Pirates have not played in a bowl game since 2014 but earned a 7-5 record in Mike Houston’s third season. Boston College has not won a bowl game since 2016.

Also, Miami is out of the Sun Bowl, so that might not happen either.

Honestly, I don’t give a rat’s ass about college bowl games, and it’s probably been well over a decade since I watched one. (When did the Longhorns last have a good team?) But Flu Manchu doesn’t provide much of a threat to healthy college football players, and Omicron is so mild that it’s probably safer to contract and exhibits less side effects than the vaccination for it. Banning football games because of exposure in nannyism gone mad.

Update: Evidently they cancelled the Holiday Bowl just hours before kickoff when UCLA pulled out.

Which Topic Should I Do A Big Roundup Post On Next?

Monday, December 20th, 2021

I have some time off this week and next, so what big roundup post should I tackle?

Supersurvey

Not a polling choice: A roundup of evidence that a lot of The Holy Covid Narrative is wrong, including that Joe Rogan interview with Dr. Peter McCullough. I’m working on that, but it may take me a few days.

Log4J and Internet Castles Made of Sand

Thursday, December 16th, 2021

If you work outside of a tech company, chances are you’ve spent this week primarily concerned with getting ready for Christmas. If you work inside a tech company, there’s a significant chance your company spent much of this week patching a critical vulnerability in an open source Java logging library called Log4J.

Here’s a non-technical explanation of the problem:

It’s a vulnerability that was discovered in a piece of free, open source software called log4j. This software is used by thousands of websites and applications, to perform mundane functions most people don’t think about, such as logging information for use by that website’s developers, for debugging and other purposes.

Every web application needs functionality like this, and as a result, the use of log4j is ubiquitous worldwide. Unfortunately, it turns out log4j has a previously undiscovered security vulnerability where data sent to it through that website — if it contains a special sequence of characters — results in log4j automatically fetching additional software from an external website and running it. If a cyberattacker exploits this, they can make the server that is running log4j run any software they want — including software that can completely take over that server. This is known as a Remote Code Execution (RCE) attack.

To use a technical phrase, this is Really Bad.

The net result is that, left unaddressed, cyberattackers right now can completely take over thousands of websites and online applications, allowing them to steal money, data, and access. The security community has been completely focused on this vulnerability for the past two days, and updating servers running log4j as quickly as possible to protect against this vulnerability.

The good news is that mitigations are relatively easy to implement. The bad news is that left unmitigated, the vulnerability is extremely easy to exploit. iCloud, Minecraft, Baidu, and many other sites have been confirmed to be vulnerable so far, and you’ll likely hear more about many other sites being vulnerable in the coming days.

And those companies are just the tip of the iceberg. LAMP stacks (Linux, Apache, MySQL, and PHP) are used as the technological underpinnings for a wide variety of web applications of all sizes. (It’s not universal, as NGINX has taken over as a market leader from Apache, and there are still a few all-Microsoft houses that use IIS, and neither of them have the vulnerability.)

Open Source has been a revolutionary invention because it provides rapid development by armies of distributed developers, and Linus’s Law states that “with enough eyes, all bugs are shallow.” But there are tens of thousands of Open Source components out there running critical infrastructure that haven’t had nearly as many eyes on the code as the Linux kernel. It’s simply the nature of the beast. XKCD had a cartoon for this occasion:

Internet applications gain usefulness from widespread adoption and the number of other components they tie into and support. You know what creates new vulnerabilities? A larger user base and the number of other components they tie into and support, which creates more attack surfaces for malicious actors to exploit.

The flaw isn’t the fault of Random Guy in Nebraska, the fault is the company adopting software that they can’t possibly test for all the use-cases they’re going to use it for. Surprise! Just about every high tech company in the world is in the same boat. Pretty much everyone uses a wide panoply of open source tools for their Internet applications, and no one can test all the permutations of how each component might be put to use.

You can’t eliminate the risk, you can only minimize and mitigate it. You can use containerization strategies (Docker, Kubernetes, Container D, etc.) to minimize attack surfaces and limit contagion. You can run all your code through security scanning tools on your CI/CD platform of choice. You can do constant testing and keep rolling backups of everything to limit risk and speed recovery. (You can also train your employees not to click on random email links without verifying the sender is who they say they are, and not to give any any account information or passwords over the phone, and train them enough so that the lessons stick, even though phising and human engineering weren’t factors in the Log4J vulnerability.)

But there still a good chance that the platform you’re using today is different than the platform you’ll be using ten years from now, and you’ll have to go through the same learning lessons discovering new vulnerabilities for the new platform all over again.

Castles made of sand all fall into the sea eventually…

LinkSwarm for December 3, 2021

Friday, December 3rd, 2021

Last week on Thanksgiving vacation, I had to put my Mac through a reboot cycle and lost the zillions of open Firefox Windows. So you may find this week’s LinkSwarm relatively (some might say “mercifully”) brief.

  • Hunter Biden was pulling down a hefty $10 million a year to spread Chinese influence:

    A damning new report claims that Hunter Biden helped expand Chinese influence in America in a $10 million a year agreement and an $80,000 diamond.

    In her new book, Laptop from Hell, New York Post columnist Miranda Devine, describes Hunter Biden’s business dealings with a Chinese-linked energy consortium, called CEFC.

    Based on hundreds of emails from Hunter Biden’s laptop which he left in a Delaware repair shop in April 2019, and transcripts of messages from WhatsApp, she claims that the Biden family offered their services to CEFC to help expand its business around the world.

    In exchange, Devine writes, Hunter Biden received $10 million a year for three years, and a diamond worth at least $80,000.

  • And, by an amazing coincidence, the Biden Administration is super soft on China.

    Administration sources confirmed that in an October call between Deputy Secretary of State Wendy R. Sherman and Sen. Jeff Merkley (D-Ore.), the other co-sponsor, Sherman made it clear that the administration prefers a more targeted and deliberative approach to determining which [Chinese] goods are the products of forced labor. She also told Merkley that getting allied buy-in was critical and more effective than unilateral action.

    “To be clear, the Department of State is not opposing this amendment,” a State Department spokesman told me. “We share the Congress’ concerns about forced labor in Xinjiang.”

    In other words, while the administration supports the legislation in public, they are asking Democrats to essentially water it down in private. Sherman’s specific criticism relates to a part of the bill that would require a presumption that all products coming from Xinjiang are tainted by forced labor unless the importer can prove otherwise. This happens to be the exact provision corporations are also objecting to. Maybe it’s a coincidence.

    “It isn’t partisan or in any way controversial for the U.S. to be unequivocally, resoundingly opposed to genocide and slave labor,” Merkley told me. “The Senate passed this legislation in July, and it’s time to get it over the finish line.”

    Watering down congressional efforts to punish China for the Uyghur genocide is not what Joe Biden promised when he was running for office, or when he took office. Through most of 2020, Biden insisted that he was the tough one on China and that the Trump administration only offered “a colossal gap between tough talk and weak action.”

    Biden, at a Democratic debate on February 25, 2020, said: “I had spent more time with Xi Jinping than any other world leader by the time we left office. This is a guy who doesn’t have a democratic bone in his body. This is a guy who is a thug who in fact, has a million Uyghurs in reconstruction camps, meaning concentration camps.”

    Biden, writing in Foreign Affairs last spring, said: “Companies must act to ensure that their tools and platforms are not empowering the surveillance state, gutting privacy, facilitating repression in China and elsewhere. . . . The United States does need to get tough with China.”

    Biden, speaking at the U.S. State Department on February 4, said: “We’ll also take on directly the challenges posed by our prosperity, security, and democratic values by our most serious competitor, China. We’ll confront China’s economic abuses; counter its aggressive, coercive action; to push back on China’s attack on human rights, intellectual property, and global governance.”

    And yet, month by month, the Biden administration is proving more and more reticent to confront the Chinese government in substantive and consequential ways. The investigation into the origins of COVID-19 is effectively dropped, and Biden didn’t mention China’s refusal to cooperate with the WHO’s separate investigation in his teleconference summit with Xi Jinping.

    Biden did not mention China, the Uyghurs, Hong Kong, or the origins of COVID-19 in his address to the United Nations.

    Commerce secretary Gina Raimondo told the Wall Street Journal in September that she thinks “robust commercial engagement will help to mitigate any potential tensions” with China. Biden rescinded Trump’s executive orders targeting TikTok, the popular app owned by the Chinese company ByteDance.

    Snip.

    Biden nominated Reta Jo Lewis to run the U.S. Export-Import Bank. Senator Marco Rubio contends that, “Reta Jo Lewis is currently a strategic advisor for the U.S.-China Heartland Association, which is a conduit for the Chinese Communist Party’s (CCP) United Front Work Department (UFWD), which aims to influence key Americans at the subnational level and ultimately undermine America’s national interests.”

    As I noted yesterday, even the proposed diplomatic boycott of the Olympics is moot, because the Chinese government announced that U.S. politicians were not invited before Biden could even officially announce the decision.

    It’s not that the Biden administration is doing nothing — an upcoming “democracy summit” invited Taiwan but not China, there have been prohibitions on U.S. investment in particular Chinese companies, and a dozen Chinese companies have been blacklisted for helping the Chinese army with quantum computing.

    But these are small-ball gestures while the Chinese government sends 18 fighter jets plus five nuclear-capable H-6 bombers into Taiwanese air-defense zone at one time, Beijing wipes out the last of Hong Kong’s opposition, and the Genocide Games go on with full U.S. corporate sponsorship. We’re attempting minor and symbolic moves while Xi Jinping is attempting big and consequential ones to maximize his leverage over the rest of the world.

  • Biden’s Approval Rating Below That of Least Popular Governor, GOP Has Nine Out of 10 Most Popular Governors.”
  • More on that subject. “Biden Approval Rating Remains an Abysmal 36 Percent.” (Hat tip: Ace of Spades HQ.)
  • Michael Shellenberger talks about how leftwing policies enable homeless camps:

    In my new book, San Fransicko, I describe why progressives create and defend what European researchers call “open drug scenes,” which are places in cities where drug dealers and buyers meet, and many addicts live in tents. Progressives call these scenes “homeless encampments,” and not only defend them but have encouraged their growth, which is why the homeless population in California grew 31 percent since 2000. This was mostly a West Coast phenomenon until recently. But now, the newly elected progressive mayor of Boston, Michelle Wu, has decided to keep open a drug scene at Mass and Cass avenues, even though it has resulted in several deaths from drug overdoses and homicides.

    Progressives defend their approach as compassionate. Not everybody who is homeless is an addict, they say. Many are just down on their luck. Others turn to drugs after living on the street. What they need is our help. We should not ask people living in homeless encampments to go somewhere else. Homeless shelters are often more dangerous than living on the street. We should provide the people living in tents with money, food, clean needles, and whatever else they need to stay alive and comfortable. And we should provide everyone with their own apartment unit if that’s what they want.

    But this “harm reduction” approach is obviously failing. Cities already do a good job taking care of temporarily homeless people not addicted to drugs. Drug dealers stab and sometimes murder addicts who don’t pay. Women forced into prostitution to support their addictions are raped. Addicts are dying from overdose and poisoning. The addicts living in the open drug scenes commit many crimes including open drug use, sleeping on sidewalks, and defecating in public. Many steal to maintain their habits. The hands-off approach has meant that addicts do not spend any amount of time in jail or hospital where they can be off of drugs, and seek recovery.

    More:

    The main progressive approach for addressing homelessness, not just in San Francisco but in progressive cities around the nation, is “Housing First,” which is the notion that taxpayers should give, no questions asked, apartment units to anyone who says they are homeless, and asks for one. What actually works to reduce the addiction that forces many people onto the streets is making housing contingent on abstinence. But Housing First advocates oppose “contingency management,” as it’s called, because, they say, “Housing is a right,” and it should not be conditioned upon behavior change.

    But such a policy is absurdly unrealistic, said the San Francisco homeless expert. “To pretend that this city could build enough permanent supportive housing for every homeless person who needs it is ludicrous,” the person said. “I wish it weren’t. I wish I lived in a land where there was plenty of housing. But now people are dying on our streets and it feels like we’re not doing very much about it.”

    The underlying problem with Housing First is that it enables addiction. “The National Academies of Sciences review [which showed that giving people apartments did not improve health or other life outcomes] you cited shows that. San Francisco has more permanent supportive housing units per capita than any other city, and we doubled spending on homelessness, but the homeless population rose 13%, even as it went down in the US. And so we doubled our spending and the problem got worse. But if you say that, you get attacked.”

    How did progressives, who claim to be evidence-based, ever get so committed to Housing First? “Malcolm Gladwell’s [2006 New Yorker article] “Million Dollar Murray,” really helped popularize this idea,” the person said. “But it was based on an anecdote of one person. It works for who it works for but is not scalable. [Governor] Gavin [Newsom] made a mistake [as San Francisco’s Mayor 2004-2011] which was that we stopped investing in shelter. But that’s because all the best minds were saying, ‘This is what’s going to work.’”

    One of the claims made by defenders of the open drug scenes is that people who live in them are mostly locals who were priced out of their homes and apartments and decided to pitch a tent on the street. In San Fransicko, I cite a significant body of evidence to show that this is false, and that many people come to San Francisco from around the U.S. for the city’s unusually high cash welfare benefits, free housing, and tolerance of open drug scenes.

    The insider agreed. “People come here because they think they can. It’s bullshit that ‘Only 30 percent [of homeless] are from out of town.’ At least 20,000 homeless people come through town every year. Talk to the people on the street. There’s no way 70 percent of the homeless are from here. I would guess it’s fewer than 50 percent. Ask them the name of their high school and they guess, ‘Washington? The one around the corner?’ But you can’t even talk about that without being called a fascist.”

  • Change? “Biden Administration to Restart Trump’s ‘Remain in Mexico’ Policy.” Or else they’ll they’re restarting it and not do it. (Hat tip: Stephen Green at Instapundit.”)
  • “Insiders Are Dumping Stocks At The Fastest Pace In History.”
  • More rats swarm off the D.N.C. Kamala.

    A top adviser and chief spokeswoman for Harris, Symone Sanders, is set to resign from her position by the end of the year, a White House official said Wednesday. It’s one of several high-level departures in the vice president’s office since she was sworn in earlier this year.

    Peter Velz, the vice president’s director of press operations, is leaving the office in the coming weeks, along with Vincent Evans, deputy director of public engagement and intergovernmental affairs, according to reports. Ashley Etienne, Harris’s communications director, is also stepping down. Advance staffers departed over the summer, soon after a trip to Guatemala where Harris drew criticism for a biting response to a question over when she intended to visit the southern U.S. border.

    A source familiar with Harris’s office woes quipped that the defections must be “completely unrelated to reading stories where they are blamed for everything.”

    “This is the same story that gets played out again and again — it’s always the vague ‘staffing,’” this person said. “I don’t think there are a ton of staff, present and former, that would rush to defend the way the office is run.”

  • What percentage of requested water are California farms getting next year? Try 0%.
  • Texas Rep. Dan Crenshaw brings the wood to Ron Klain:

  • Let’s follow up that kudo for Crenshaw with some serious criticism: He was one of 80 Republicans (along with Rep. John Carter, my own representative) to vote in favor of a federal vaccine database. He can swear up and down it’s not going to be used for vaccine passports, but we’ve seen worldwide governments use coercive tools with even less legal justification.
  • When it comes to arguments on the new Supreme Court abortion case, you can smell the panic.
  • Virginia’s Lt. Governor elect Winsome Sears tells the truth about Critical Race Theory in Virginia.
  • The FTC is suing to stop the Nvidia Arm acquisition. Between the China subsidiary going rogue and additional regulatory hurdles in the UK and EU, the deal may be in serious jeopardy.
  • Real life frequently has symbolism more heavy-handed than fiction. “Barack and Michelle Obama Elementary will close at the end of the 2022-2023.” (Hat tip: Holly Hansen.)
  • Disney censors episode dealing with China censorship for China.

  • Gutfeld is beating Kimmel and Fallon.
  • “Joe Rogan Had the No. 1 Podcast in 2021 on Spotify.”
  • “The Jussie Smollett Trial Isn’t About A ‘Hoax.’ It’s About The Entire Social Justice Movement Being A Scam.”

    Smollett wasn’t engaging in a hoax. He was perpetuating a scam and that scam has a name. It’s called “social justice.” (Or, in the Biden administration’s parlance, “equity.”)

    It’s not like Smollett is a demonstrable sociopath who told an aimless lie about being attacked by Trump supporters in 2019 for the sake of it. According to a very solid case built by an exhaustive Chicago police investigation, Smollett pretended to be the victim of a violent racist and anti-gay assault because he wanted more fame and thus more money.

    What better way to achieve that goal than to feed into the enduring myth that minorities in America are suppressed at every turn, even targeted for violence by whites? White men in particular, and, as of 2016, even better if they’re Trump supporters.

    Police charged that Smollett offered to pay two brothers he was acquainted with about $2,000 each to act out an attack on the actor in the dead of a Chicago winter night. The siblings, Abimbola and Olabinjo Osundairo, told investigators that Smollett had given them $100 to buy masks, a red hat, and a rope that would be fashioned into a kind of noose for the staged attack. The Osundairos were instructed to confront Smollett on a sidewalk, slightly rough him up, and then disappear.

    The setup preceeded a previous stunt, wherein Smollett mailed himself a threatening letter that said, “You will d[ie] black fag,” accompanied by an illustration of a hangman. Police said Smollett’s failure to garner any significant national attention from the letter is what led him to fake the assault.

    “…This announcement today recognizes that ‘Empire’ actor Jussie Smollett took advantage of the pain and anger of racism to promote his career,” then-police superintendent Eddie Johnson said in late February, after his department probed the events from the night of the incident. He said Smollett was mostly motivated by seeking a salary increase for his role on “Empire.”

    That was the conclusion of law enforcement after spending more than $100,000 taxpayer dollars on an investigation to piece together surveillance video, eye-witness testimony, and data gathering that led them to believe Smollett had lied about everything.

    But in all fairness, who could blame him? This is what our entire culture is teaching now— that the quickest way to advance is to claim victimhood on account of race, sex, or sexual identity — ideally, some combination of all three.

    Lucrative opportunities present themselves quickly for those who sell themselves as oppressed and aggrieved. And for Smollett, it worked! Nobody knew who he was before he claimed to have been physically confronted and called the n-word and the f-word by white male Trump supporters. Thereafter, everyone knew who he was.

    He was written about in The New York Times, the Washington Post, and USA Today. A-list celebrities, TV hosts and political leaders expressed their solidarity.

  • Boom!

  • White Smoke Emanates From Wuhan Lab Chimney Signaling A New Variant Has Been Named.”
  • The Cute, it burns!
  • Pre-Halloween Weekend Open Thread

    Friday, October 29th, 2021

    I have to run around a bunch this morning, so I think it’s going to end up being another Saturday LinkSwarm.

    I won’t say that Halloween has snuck up on me this year, but I haven’t done as much Halloween-themed stuff as I would like this year. I did buy these “flickering flame” bulbs for my outdoor lights. They seem to work fine.

    You can find all my Halloween posts on my non-political blog here.

    Anyone doing anything interesting for Halloween this year?

    Internet Outage

    Friday, October 8th, 2021

    Spectrum is out right now, so the LinkSwarm is going to be extra late.

    I mean, it was already going to be extra late, but now I have an excuse…

    As Jerry Pournelle used to say “This day eaten by locusts.”

    So: Open thread!

    The System is Down…The System Is Down…

    Monday, October 4th, 2021

    Facebook, Instagram and WhatsApp are all down right now. Botched upgrade? Misconfigured router? Expired signing certificate? Who knows? I’m just going to assume its a problem with their latest SuppressAllPostsQuestioningTheHolyVaccineMarrative.yml file. But it’s a reminder of how deeply interconnected all online systems are these days, and how many different things can go wrong at different layers.

    Expect a sudden burst of productivity from American companies.

    And just in case you didn’t get the reference:

    Edited to add: Additional detail:

    Facebook—and apparently all the major services Facebook owns—are down today. We first noticed the problem at about 11:30 am Eastern time, when some Facebook links stopped working. Investigating a bit further showed major DNS failures at Facebook…

    DNS—short for Domain Name System—is the service which translates human-readable hostnames (like arstechnica.com) to raw, numeric IP addresses (like 18.221.249.245). Without working DNS, your computer doesn’t know how to get to the servers that host the website you’re looking for.

    The problem goes deeper than Facebook’s obvious DNS failures, though. Facebook-owned Instagram was also down, and its DNS services—which are hosted on Amazon rather than being internal to Facebook’s own network—were functional. Instagram and WhatsApp were reachable but showed HTTP 503 (no server is available for the request) failures instead, an indication that while DNS worked and the services’ load balancers were reachable, the application servers that should be feeding the load balancers were not.

    A bit later, Cloudflare VP Dane Knecht reported that all BGP routes for Facebook had been pulled. (BGP—short for Border Gateway Protocol—is the system by which one network figures out the best route to a different network.)

    With no BGP routes into Facebook’s network, Facebook’s own DNS servers would be unreachable—as would the missing application servers for Facebook-owned Instagram, WhatsApp, and Oculus VR.

    DNS—short for Domain Name System—is the service which translates human-readable hostnames (like arstechnica.com) to raw, numeric IP addresses (like 18.221.249.245). Without working DNS, your computer doesn’t know how to get to the servers that host the website you’re looking for.

    The problem goes deeper than Facebook’s obvious DNS failures, though. Facebook-owned Instagram was also down, and its DNS services—which are hosted on Amazon rather than being internal to Facebook’s own network—were functional. Instagram and WhatsApp were reachable but showed HTTP 503 (no server is available for the request) failures instead, an indication that while DNS worked and the services’ load balancers were reachable, the application servers that should be feeding the load balancers were not.

    A bit later, Cloudflare VP Dane Knecht reported that all BGP routes for Facebook had been pulled. (BGP—short for Border Gateway Protocol—is the system by which one network figures out the best route to a different network.)

    With no BGP routes into Facebook’s network, Facebook’s own DNS servers would be unreachable—as would the missing application servers for Facebook-owned Instagram, WhatsApp, and Oculus VR.

    Speculation is that Facebook engineers have locked themselves out of their own network, meaning someone with physical access to the servers will have to fix things…

    Edited to add 2: Krebs offers more details:

    Facebook and its sister properties Instagram and WhatsApp are suffering from ongoing, global outages. We don’t yet know why this happened, but the how is clear: Earlier this morning, something inside Facebook caused the company to revoke key digital records that tell computers and other Internet-enabled devices how to find these destinations online.

    Doug Madory is director of internet analysis at Kentik, a San Francisco-based network monitoring company. Madory said at approximately 11:39 a.m. ET today (15:39 UTC), someone at Facebook caused an update to be made to the company’s Border Gateway Protocol (BGP) records. BGP is a mechanism by which Internet service providers of the world share information about which providers are responsible for routing Internet traffic to which specific groups of Internet addresses.

    In simpler terms, sometime this morning Facebook took away the map telling the world’s computers how to find its various online properties. As a result, when one types Facebook.com into a web browser, the browser has no idea where to find Facebook.com, and so returns an error page.

    In addition to stranding billions of users, the Facebook outage also has stranded its employees from communicating with one another using their internal Facebook tools. That’s because Facebook’s email and tools are all managed in house and via the same domains that are now stranded.

    “Not only are Facebook’s services and apps down for the public, its internal tools and communications platforms, including Workplace, are out as well,” New York Times tech reporter Ryan Mac tweeted. “No one can do any work. Several people I’ve talked to said this is the equivalent of a ‘snow day’ at the company.”

    Developing…

    Edited to add 3: Seeing reports that Gmail is down for some people. It’s not down for me. I just tested and it’s working fine.

    Updated to add 4: Facebook appears to be back up, but is way wonky…

    Technical Difficulties

    Tuesday, September 7th, 2021

    My blogs were down this morning (both BattleSwarm and https://www.lawrenceperson.com/), and some features (like tag auto-population) still don’t seem to be working. No explanation from BlueHost for the outage except “There are too many process, I killed all the process but it keeps re-generating,” which is a symptom of the issue, not the issue itself.

    Anyway, the upshot is no real blog post this morning, so instead enjoy a compilation of random Golden Retriever videos.