THE LAB

China's CPU-Only Supercomputer Beats El Capitan — Without a Single GPU

The benchmark results are in: China's LineShine supercomputer, installed at the National Supercomputing Center in Shenzhen, has knocked El Capitan out of the top spot on the TOP500 list, delivering 2,198 exaflops — more than 20 percent ahead of the Livermore system that had held first place since 2024.¹ China hasn't led the TOP500 since roughly a decade ago. What makes LineShine architecturally notable is what it does not contain: no GPUs. The system runs entirely on roughly 45,000 LX2 processors built on the domestic LingKun platform, each with 304 cores clocked at 1.55 GHz, interconnected via a proprietary low-latency fabric called LingQi, all running Kylin OS.¹ The entire stack — silicon to OS — is Chinese-developed.

That choice is not accidental. US export controls have made high-end GPUs and AI accelerators effectively unavailable to Chinese supercomputing programs, so China invested in a CPU-only architecture that can still claim the world's fastest crown. At 42.2 megawatts, LineShine is power-hungry but not outlandishly so for its scale. The message is deliberate: the restrictions intended to cap China's compute ceiling have instead forced a domestic silicon ecosystem into existence that can now compete at the absolute frontier — without Nvidia, without AMD, without any American IP in the critical path.

Simon Willison flagged an interesting real-world prompt injection experiment this week. Fernando Irarrázaval ran a public challenge at hackmyclaw.com: could anyone, given open email access to an OpenClaw instance backed by Opus 4.6, extract a secret held by the model? After 6,000 attempts from roughly 2,000 participants — and $500 in token spend plus a Google account suspension from sheer email volume — nobody succeeded.² Willison's read: frontier models have gotten meaningfully harder to break via injection, a pattern he also saw in the GPT-5.6 system card's treatment of the same attack class. His caveat is worth preserving precisely: "6,000 failed attempts provides no guarantees that someone with a more sophisticated approach couldn't get through."² The experiment is evidence, not proof. The attack surface isn't closed; it's just gotten more expensive to exploit.

Willison also linked to a satirical "incident report" by Andrew Nesbitt — CVE-2026-LGTM — in which two competing AI review agents enter a 340-comment disagreement loop over a dependency bump, rack up $41,255 in inference costs before Finance kills their API keys, and prompt a vendor marketing team to issue a press release celebrating "a 430% YoY increase in adversarial multi-agent security reasoning." The stock opens up 6%.³ The joke lands because the mechanism is not that far from observed behavior.

Carmack posted a detailed reckoning with Quake's 30th anniversary this week — acknowledging that the engine was "overly ambitious technically," that he pushed the team past its limits, and offering a direct apology to Sandy Petersen, who had written that Quake "broke [id Software] spiritually."⁴ Romero weighed in with a similar assessment. The full exchange is worth reading; THE LONG READ covers it today.

Trending today: GitHub is saturated with AI agent wrappers, Claude Code-based investing frameworks, and LLM prompt collections — nothing on the list clears the technical novelty bar.

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THE PELOTON

Wellens Outwits the Favourites; Evenepoel Seethes at Philipsen

↩ Developing story — first reported Jun 24 · previously Jun 26

Pen-and-ink editorial illustration. A lone cyclist in a national champions' skinsuit crosses a finish line strung between two roadside barriers, arms not yet raised — a beat before the realisation. The figure is hunched over drop bars, jersey fabric rippling from speed. Behind him, a fractured peloton dissolves into the distance, riders strung out across a wide Belgian road flanked by squat brick farmhouses and a stand of poplars. Dense cross-hatching builds shadow under the barriers and in the hollow of the rider's back; the road surface is rendered in fine parallel lines that converge toward the vanishing point. Strong diagonal composition, bold silhouette against generous white sky. No colour, no text, no gradients.

BRASSCHAAT, Belgium — Tim Wellens did not go to Brasschaat expecting to win the Belgian national championship. He said so himself: no good legs in the days before the race, no expectations at the start line. But while Remco Evenepoel marked every move and everyone marked Evenepoel, Wellens rode away alone and held on. "I was only sure that I was going to win in the last kilometre," he said afterward. "I don't think I've ever suffered so much."¹

The result is a genuine surprise. Wellens, riding in support of Tadej Pogačar at UAE Team Emirates–XRG, finished ahead of Evenepoel and Jasper Philipsen to claim a Belgian champion's jersey he will wear at the Tour de France next week. Evenepoel had crashed early — without lasting consequences, he said — but the decisive moment was what happened behind Wellens: Philipsen refused to contribute to the chase, a choice that left the reigning Olympic champion furious. "I always managed to jump on the wheel, but I couldn't turn along," Evenepoel told Sporza. "Those are sometimes strange tactics. You'll never win the race that way."² Asked whether Philipsen's cooperation might have changed the outcome, he was blunt: "Perhaps — but Philipsen said he couldn't. Oh well, it doesn't matter anymore."

As this paper reported last week, Evenepoel had already navigated the Belgian federation's mandatory-participation rule by presenting a medical certificate, avoiding the nine-day suspension that would have barred him from the Tour. That ruling held — he was cleared to race Sunday without risk of penalty — but he showed up anyway and left Brasschaat with silver and a grievance. He will be in Barcelona on July 4 regardless.

Patrick Lefevere, who managed Evenepoel for years at QuickStep, weighed in ahead of Sunday's race in his weekly Nieuwsblad column, calling the mandatory participation rule "an absurd situation" while adding: "If he goes for the doctor's note now too, I fully understand."³ He had backed Philipsen for the title given the flat Brasschaat course, a prediction that proved accurate in shape if not in result.

In Wales, Zoe Backstedt completed the TT/road race double at the British national championships in Aberystwyth, the first British woman to do so since Alice Wood in 2019.⁴ Backstedt's victory required a sustained solo pursuit: DAS-Hutchinson's Josie Knight had gone clear early and held a lead of eight minutes at one point, but Backstedt bridged across to her with 14 km remaining and then rode away. Millie Couzens took the sprint from the reduced bunch for third.

Across the channel, the French men's road race at La Tour-du-Pin was shortened by one lap — 16.3 km cut from the circuit — after temperatures in the Isère region reached around 37°C.⁵ The French Cycling Federation made the call "after discussion and consultation with all stakeholders." Riders still faced 225.5 km with 3,206 metres of climbing. The truncation capped a week of disruption across European national championships: time trials in the Netherlands and Italy were delayed, and XDS Astana's team doctor publicly warned about the health risks following Elisa Longo Borghini's withdrawal from Tour de Suisse Women with heat stroke.

The wider implications for the Tour de France are being debated openly. Pascal Chanteur, president of France's National Union of Professional Cyclists, called on organisers to shift race starts to 9 a.m. to avoid peak heat. A study published earlier this year in Scientific Reports, drawing on 50 years of Tour data, found that heat stress on riders has risen steadily since 1974, with the most extreme episodes concentrated in the past decade. IRD researcher Ivana Cvijanovic was unambiguous: "With the increasing frequency of record heat waves, it's only a matter of time before the Tour faces a day of extreme heat that will test existing safety protocols."⁶ Race director Christian Prudhomme's current response is route design — seeking ascents under tree cover where possible — a measure that will do nothing for the Galibier.

Two Tour de France squad updates before Barcelona. Gregor Mühlberger will not be at the Grand Départ. The 32-year-old Austrian climber had skipped the Tour de Suisse and Austrian Road Championships to focus entirely on altitude preparation after helping Felix Gall to second at the Giro. "I put everything into the preparation at the team altitude camp in France. Full focus, full discipline, no shortcuts," he wrote on Instagram. "Sometimes sport gives you no warning."⁷ Decathlon CMA CGM are considering replacing him with sprinter Olav Kooij, who has won three successive races in recent weeks including the Baloise Belgium Tour — where he outsprinted Tim Merlier and Jasper Philipsen. Kooij did not start Sunday's Dutch road championships, consistent with reports that he appears on the team's preliminary start list for the Tour.

Caja Rural–Seguros RGA will make their Tour de France debut in Barcelona next Saturday, a first in the team's 34-year history.⁸ Sports director Aritz Bagüés says the team's goals are realistic — chase stage wins through Fernando Gaviria in the sprints and opportunistic climbers elsewhere. The team carries additional weight: rider Jaume Guardeño, 23, struck a car during a training ride in March and remains in a neurological rehabilitation clinic in Barcelona. The team wants to win a stage for him.

Quantum Pacific Management acquired a 43% stake in Abarca Sports, the parent company of Movistar Team, with Eastern Pacific Shipping — a Quantum-affiliated firm — signing a separate sponsorship deal that puts the EPS logo on both the men's and women's jerseys.⁹ Quantum is led by Israeli billionaire Idan Ofer and already holds a 28% stake in Atlético Madrid; this is the group's first cycling investment. No financial terms have been disclosed. Movistar founder Eusebio Unzué called the investment a sign that the team is "in a more solid position to face the future." Telefónica had extended its title sponsorship through 2029 in December 2024; Quantum's capital injection adds a second institutional backer as the team heads into a transition year.

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THE WORLD

Seattle Pride Parade Today; Seattle Home Prices Post Second-Largest Drop in U.S.

• World Cup group stage closes — England top their group; Scotland coach Steve Clarke steps down following the results. [17 words]
• China's fastest supercomputer — LineShine, installed at the National Supercomputing Center in Shenzhen, is now ranked the world's fastest, built without GPUs despite U.S. export controls.⁴
• Iran talks stall — Tehran has paused Strait of Hormuz nuclear negotiations and threatened to close the Strait of Mandeb. [17 words]

The Seattle Pride Parade runs today, 11 a.m. to 3:30 p.m., from Westlake Park down 4th Ave. to the Seattle Center.¹ This year's theme is "Rally." The Queer/Pride Festival on Capitol Hill wraps up its three-day run today as well.

Redfin data out today shows Seattle home prices fell 4.8% year-over-year this spring — second only to San Jose's 6.2% drop among major metros.² Pending sales are down 12%. The report ties the decline to high housing payments and softening demand; sellers are pulling back rather than cutting prices to move inventory. A separate note from a Seattle broker flags a 65% spike in luxury listings ($2M+) the day Washington's new income tax on earnings over $1M was signed.²

South King County fire crews executed a Zone 3 Technical Rescue early Saturday morning after a hiker became stranded in steep terrain near the Green River Gorge, just east of Black Diamond.³ Five departments — Puget Sound Fire, Renton Regional, Enumclaw, Maple Valley, and King County Medic One — set up three separate rope systems to extract the injured hiker, who sustained non-life-threatening injuries. The rescue call came in at 3 a.m.; the hiker was transported by ambulance around 6 a.m.

ON THE TRAIL

WEEKEND PICKS — Jul 4–6 long weekend

Next weekend lines up with the Independence Day long weekend (Fri Jul 4 – Sun Jul 6). Western Cascades are wet through the week; the rain shadow east of the passes is your best play.

1. Iron Bear – Teanaway Ridge | Central Cascades, Blewett Pass | ~100 min from Issaquah

A Jun 27 report found the trail in excellent shape: no snow, loads of wildflowers (lupine, balsamroot, blue sky with rolling clouds), and no other hikers until the descent from the summit. 6.5 miles round trip, 2,100 ft gain — serious enough to justify the drive without committing to a monster day. Camp at the ridge for a two-day out-and-back; the reporter noted a plan to extend to Jester Mountain as a possible add-on.

NWS for I-90 East (Teanaway/Cle Elum): "Mostly Sunny" through the week. Independence Day forecast: high 74°F, 2% precip. Saturday Jul 5: mostly sunny, high 65°F, 9% precip.

Clears criteria: minimal snow (none reported), water available (streams in area), minimal bugs (none noted), low crowds (solo summit), no problematic fords, dry forecast.

WTA trip report — Jun 27

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2. Sheep Lake via PCT (Chinook Pass) | Mt. Rainier Area, Hwy 410 | ~130 min from Issaquah

A Jun 27 group report is one of the most detailed and positive in the recent batch: snow-free all the way to Sourdough Gap, zero mosquitoes for the entire day, wildflowers going off in the first 1.5 miles (tiger lilies, lupine, beargrass, paintbrush), and parking right at the PCT trailhead with only 8 other cars. The trail makes a good overnight: camp at Sheep Lake (~2 miles in, 300 ft gain), then push to Sourdough Gap the next morning for views.

NWS for Mt Rainier (Greenwater/Crystal/White R.): Independence Day forecast: "Sunny," high 61°F, 5% precip.

Clears criteria: no snow to Sourdough Gap, water at Sheep Lake, zero bugs per Jun 27 report, very low crowds (polar low kept the masses away), no fords, strong holiday weekend forecast.

WTA trip report — Jun 27

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3. Thorp Lake | Snoqualmie Region, Salmon La Sac/Teanaway | ~100 min from Issaquah

Jun 27 report: no mosquitoes, no snow, wildflowers blooming, quiet trail with only a few groups. The river crossing at the start was a non-issue. Trail is overgrown at the beginning — wear long pants or expect a wet start if there's dew. Short approach (~2 miles to the lake, ~1 hr) makes it a good add-on day if you're already in the Teanaway corridor for Iron Bear.

NWS for I-90 East: mostly sunny through Independence Day weekend, high 65°F on Friday, 9% precip on Saturday.

WTA trip report — Jun 27

REGIONAL SNAPSHOT

Issaquah Alps / Tiger Mountain: Trails wet but not muddy after weekend rain. West Tiger 3 summit was socked in Jun 27 but trail clear. Car broken into at the main West Tiger parking lot Saturday — leave nothing visible. Wildflowers at the summit are "amazing" per a Jun 27 report.

I-90 / Snoqualmie / North Bend: Rainy weekend. Teneriffe Falls, Snow Lake, and Melakwa all had visitors but trails are wet; expect standing water in lower sections. Granite Creek to Granite Lakes had 15–20 manageable creek crossings. I-90 corridor stays wet through Tuesday (55%+ chance rain), improving mid-week.

Teanaway / Salmon La Sac (I-90 East): Best conditions in the state right now. Iron Bear, Thorp Lake, and Lake Ingalls all reported favorably. Lake Ingalls had active snowfall Jun 27 near the lake but small patches only. Palouse to Cascades trail (South Cle Elum trailhead) offered a dry alternative on a rainy day for flatter travel.

Mountain Loop Highway: Big Four Ice Caves trail accessible but bugs are present by afternoon. Old Robe Canyon in good shape, easy hike. White Chuck Bench trail recently brushed by Forest Service crew, in good condition. Heather Lake parking lot filling by 10 a.m. on weekends.

North Cascades / Hwy 20: Blue Lake has two small snow crossings (manageable without microspikes). Tatie Peak / Grasshopper Pass (Pasayten) is spectacular but has three large snowfields on slopes — poles and boots recommended. Hwy 20 forecast turns wet Monday through much of the week.

Mt. Rainier: Glacier Basin Loop accessible for overnight; bear and cub spotted near pond at camp recently — hang your food. Three Lakes via Laughingwater Creek: 13.2 miles RT, mosquitoes starting, good fitness test. Sheep Lake / Sourdough Gap (Chinook Pass): snow-free, zero bugs per Jun 27 report — standout conditions.

South Cascades (Goat Rocks / Adams / St. Helens): Avoid this weekend. NWS forecast shows high winds (28–39 mph) and temperatures in the low 30s through the week. Goat Lake trail has slippery snow patches mid-route that turned back at least one party Jun 25.

Olympic Peninsula: Surprisingly clear this weekend — mostly sunny, low 53°F. Appleton Pass trail has washed-out creek crossings and a broken log bridge but passable. Mount Ellinor had no obstacles but rocks are slippery when wet. Long drive (180–240 min) makes this a Friday-night departure trip.

Central Washington (Potholes / Ancient Lakes): Dry and dusty. Fire burn ban in effect — no campfires. Good option if you want heat and open desert landscape.

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FROM THE ARCHIVE

The Night They Fought Back: June 28, 1969

Just past midnight on June 28, 1969, New York City police raided the Stonewall Inn, a bar in Greenwich Village that had been serving liquor without a license.¹ It was the kind of raid gay bars absorbed regularly — the NYPD had made a practice of it. But that night, something different happened. The crowd pushed back.

Bottles hit the street. The confrontation spilled out of the bar and into the surrounding blocks. Order was not restored until riot police arrived sometime after 4 a.m.¹ And then the demonstrations continued the next night, and the night after that.

The uprising that started at Stonewall didn't win anything immediately. What it did was establish a template — that public confrontation was possible, that the cost of backing down could be lower than the cost of staying quiet. Within months, the Gay Liberation Front had been formed. Others followed: the Human Rights Campaign, GLAAD, PFLAG.² Exactly one year later, in 1970, the first official gay pride parade set off from outside the Stonewall Inn and marched up 6th Avenue.¹ June became Pride Month to commemorate that week. In 2016, the site was designated a national monument.² In 2019 — fifty years on — the NYPD formally apologized for its role.¹

Fifty-seven years after the raid, Seattle's Pride Parade marks the same date.

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THE FUNNIES

Two AI Agents Walk Into a Code Review / The Tour's Shade Plan

After XKCD — on the CVE-2026-LGTM incident, in which two competing AI review agents spend $41,255 arguing over a version number before Finance cuts their API keys. After Krazy Kat — on the Tour de France heat crisis, in which race officials respond to 37°C by planting a single sapling and routing climbs through imaginary trees while the scientist says "just move it to spring."

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ALSO NOTED

Also Noted

• Eurobike Is Over — DC Rainmaker walked the Frankfurt show floor this week and filed what amounts to an obituary: exhibitor count fell from 1,800 in 2024 to a claimed 800 in 2026 (with visibly fewer than that actually present), every major sports-tech brand from Garmin to Shimano to SRAM has left, and the show quietly announced it won't run in 2028 — moving to a biennial format it almost certainly won't survive. dcrainmaker.com Jun 26, 2026
• Roglic Wins Slovenian TT Title — First TT Win Since 2024 — Primož Roglič claimed his second national time trial championship in Karteljevo on Friday, finishing about 90 seconds clear of the Bahrain duo, his first time trial victory since the 2024 Tour of the Basque Country and first national title since the 2020 road race — a welcome momentum boost before his Vuelta campaign. idlprocycling.com Jun 27, 2026
• MAX Now Runs LLMs on Apple Silicon GPUs — Modular's 26.4 release brings GPU-accelerated MAX inference to M1 through M5 chips, covering text LLMs, vision models, and image diffusion; M5 systems get dedicated matrix-multiplication kernels targeting the Neural Accelerator units, and a 4B-parameter FLUX image model runs on any Mac with 15 GB of free RAM. forum.modular.com Jun 27, 2026
• GPT-5.6 Launches in Limited Preview With Three-Tier Pricing — OpenAI began a limited partner preview of its GPT-5.6 family — Sol ($5/$30 per million tokens), Terra ($2.50/$15), and Luna ($1/$6) — with the government previewing capabilities ahead of launch and requesting a staged rollout before general availability; the release also adds explicit cache breakpoints and a 30-minute minimum cache life. simonwillison.net Jun 26, 2026
• Nourish: A Wayland Compositor With an Infinite Canvas — A new open-source Linux desktop compositor built in Rust on Smithay, Bevy, and wgpu renders via Vulkan and lets you zoom and pan the workspace freely rather than constraining windows to screen boundaries; it targets Fedora 44 with a one-line installer and claims to be stable enough for daily use. github.com
• Sean Goedecke: Why Stating the Obvious Is Hard and Worth Doing Anyway — A short essay arguing that articulating things you already know — that some engineers do no work, that accuracy matters, that ego can be useful — serves the reader precisely because tacit knowledge lives below conscious awareness, and that you can only reach the non-obvious implications once you've written down the obvious ones. seangoedecke.com Jun 26, 2026

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THE QUESTION

What Does Incremental Adjustment Cost When the Threat Is Accelerating?

When the problem is structural and accelerating, proportional responses don't just fall short — they defer the reckoning while the gap grows.

Two stories in today's paper, from entirely different domains, run into the same wall. THE PELOTON notes that France's national championships were shortened by a lap this morning — 16.3 km cut, with temperatures forecast to reach 37°C at La Tour-du-Pin.¹ That's a sensible, proportional adjustment. What it isn't is a plan. The race director's stated response to heat at the Tour de France is to route certain climbs under tree cover and to favor ascents in shade where possible. Christian Prudhomme acknowledged this week that "places like the Galibier or the Tourmalet will never be removed from the Tour."² A study in Scientific Reports, drawing on 50 years of Tour data, found that heat stress on riders has risen steadily since 1974, with the most extreme episodes concentrated in the past decade.² IRD researcher Ivana Cvijanovic's assessment is unambiguous: it is a matter of time, not probability.² The riders' union is calling for 9 a.m. starts. Scientists are saying move the race to spring. ASO is routing climbs through the undergrowth.

THE LAB reports a structurally identical dynamic in a different vocabulary. US export controls were designed to contain China's compute capability by denying access to high-end GPUs and AI accelerators. China responded not by finding workarounds to the existing architecture but by building a new one from the ground up — 45,000 domestic LX2 processors, a proprietary interconnect fabric, a national OS, no American IP in the critical path.³ The result is LineShine, now ranked the world's fastest supercomputer, delivering more than 20 percent above El Capitan.³ The policy worked as a constraint; it failed as a ceiling.

The structural question both stories raise is the same: at what point does an institution's preference for proportional, reversible adjustment become the source of its vulnerability rather than its prudence? Trimming a lap is defensible when you expect the heat to be an exception. Routing a climb through the woods is defensible when you expect the climate to be stable. The controls on GPU exports are defensible when you expect adversaries to need your architecture. The problem is that the underlying forces — warming summers, adversarial domestic investment — are not proportional or reversible, and each incremental response implicitly bets that the next disruption will be small enough to absorb with another small move.

There is no neutral version of this bet. Staying incremental is itself a choice about how much structural risk to carry forward.

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