Tootfinder

The idea that autonomous, thinking machines may one day destroy property, hierarchy and inequality
is as old as western political thought.
In Aristotle’s Politics, the philosopher cites a fantasy from the Iliad, in which machines begin to act independently of human direction, concluding:
“If every tool could perform its own work when ordered, or by seeing what to do in advance …
if thus shuttles wove and quills played harps of themselves,
master-craftsmen wou…

AI will transform capitalism – but how?
Technology is going to drastically reshape the economy, and it’s within our power to decide what that looks like

Mahomes Mountain Week 6: Jared Goff Rises, Patrick Mahomes Remains At The Summit https://www.foxsports.com/stories/nfl/mahomes-mountain-week-6

Herd Hierarchy: Who's The NFL's New No. 1? Bills Slide As Falcons, Colts Rise https://www.foxsports.com/stories/nfl/herd-hierarchy-whos-nfls-new-no-1-bills-slide-falcons-colts-rise

Herd Hierarchy: Who's The NFL's New No. 1? Bills Slide As Falcons, Colts Rise https://www.foxsports.com/stories/nfl/herd-hierarchy-whos-nfls-new-no-1-bills-slide-falcons-colts-rise

A polyhedral framework for hierarchical Archimedean copulas: estimation, hierarchy recovery and singular asymptotics
Leonardo Marconi
https://arxiv.org/abs/2610.10134 https://arxiv.org/pdf/2610.10134 https://arxiv.org/html/2610.10134
arXiv:2610.10134v1 Announce Type: new
Abstract: Hierarchical Archimedean copulas (HACs) admit redundant tree representations: when adjacent internal nodes have equal parameters, contracting the connecting edge leaves the copula unchanged. This creates a structural overparametrization. For homogeneous one-parameter families, we remove this redundancy and identify the resulting reduced model class with the ultrametric fan. We treat the Clayton, Frank, Ali-Mikhail-Haq, Gumbel and Joe families.
Using the negative logit of normalized Kendall's tau as a common node-height coordinate, reduced hierarchies form polyhedral strata, binary hierarchies index maximal cones, and multifurcating hierarchies lie on common contraction faces. The induced cophenetic metric generates the same topology as uniform convergence of copulas. We also show that informative pairwise dependence summaries act componentwise on cophenetic coordinates and hence provide global coordinates for the reduced model.
This representation yields a global estimator obtained by inverting estimated pairwise summaries and projecting onto the fan, without preselecting a hierarchy. We prove consistency and convergence-rate transfer. At binary truths, the unthresholded estimator recovers the hierarchy with probability tending to one; at multifurcating truths, it asymptotically selects a binary refinement, while vanishing thresholding consistently recovers the reduced hierarchy. Under a joint central limit theorem for the pairwise summaries, the projected estimator has a root-$n$ limit given by Euclidean projection of a Gaussian vector onto the tangent fan. The limit is Gaussian at binary hierarchies and generally non-Gaussian at multifurcating ones. For empirical Kendall's tau, we verify the required regularity conditions and obtain the corresponding singular limit.
toXiv_bot_toot

The fading hierarchy of Galactic open clusters
Guimei Liu, Jo\~ao Alves, Yu Zhang, Emily L. Hunt, Ruqiu Lin, Josefa E. Gro{\ss}schedl, Efrem Maconi, Nora Wagner, Lilly Kormann, Cameren Swiggum
https://arxiv.org/abs/2609.09122 https://arxiv.org/pdf/2609.09122 https://arxiv.org/html/2609.09122
arXiv:2609.09122v1 Announce Type: new
Abstract: Galactic open clusters provide a record of both hierarchical star formation and the subsequent dynamical evolution of the Milky Way disk. We use the two-point correlation function to characterize the spatial and kinematic clustering of open clusters in the solar neighborhood, considering their three-dimensional (3D) distributions and their projections onto the Galactic plane, as well as subsamples divided by age, mass, and survey volume. We quantify the clustering through fractal dimensions and characteristic correlation scales. We find that the youngest clusters have fractal dimensions comparable to those measured in the interstellar medium, suggesting that they retain part of the hierarchical structure of their natal molecular clouds. The clustering strength then decreases systematically with age and becomes weak on a characteristic timescale of order 100 Myr. This evolution is scale dependent: the excess correlation at tens of parsecs fades more rapidly than the weaker correlation at hundreds of parsecs. By contrast, we find only a weak dependence of the clustering properties on cluster mass and volume. Using the same cluster sample, we derive an empirical mapping between projected and 3D fractal dimensions, providing an observational calibration for comparing the Milky Way with studies of external galaxies, where only projected measurements are available. The open-cluster population exhibits characteristic spatial and kinematic clustering scales of approximately 370 pc and 11 km/s, respectively. These results support a picture in which young open clusters inherit a spatial hierarchy from star formation and progressively lose their spatial correlations through subsequent evolution.
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NFL Power Rankings, Week 1: Cowboys rising after defensive makeover; Bears drop out of top 10 https://www.nfl.com/news/nfl-power-rankings-week-1-2026-nfl-season

A Full-Stack Characterization of High-Bandwidth Flash for KV-Centric LLM Serving
Zhuoran Li, Zhuohang Bian, Xin Huang, Yibo Zhao, Guangyu Sun, Youwei Zhuo
https://arxiv.org/abs/2608.11668 https://arxiv.org/pdf/2608.11668 https://arxiv.org/html/2608.11668
arXiv:2608.11668v1 Announce Type: new
Abstract: High-Bandwidth Flash (HBF) stacks NAND behind a wide, package-local interface, giving flash-scale capacity with far better read latency and bandwidth than an SSD. This makes it tempting to keep an SSD-style Mooncake KV-offloading stack and swap only the backing tier for HBF. We test that substitution with an extended TokenSim, four complete two-hour Qwen-Bailian production traces, five dense and mixture-of-experts models, and H100/B200 profiles. Serving gets worse, not better, and a cost-benefit model explains why. A faster far tier helps only when read I/O is the serving bottleneck, reads outweigh writes, and delivered bandwidth is sustainable. All three must hold together, and transient KV fails every one. The package trade that buys flash costs GPU near-tier capacity and bandwidth, so average end-to-end latency rises 2--5.5x and maximum SLO goodput falls 1.1--2.7x across H100 and B200. Serving is almost insensitive to HBF's own read/write latency, and base-die near-memory compute does not raise the flash tier's share of the critical path. The two-tier hierarchy keeps reuse in the near tier and hands HBF a write-heavy stream, so writes outnumber reads on every trace. A 3D-ICE model shows that stream drives the stack to its thermal limit well below peak bandwidth, and a TLC tier wears out sooner than a capacity-matched SSD pool. The faster device yields a slower system because the package gives up more than the medium returns. HBF is not the problem; using it as a faster SSD for transient KV is. It belongs in serving as a selective, reuse-aware, write-budgeted, and thermally coordinated tier, not as a drop-in SSD replacement.
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Replaced article(s) found for hep-th. https://arxiv.org/list/hep-th/new
[2/3]:
- Multicritical points of gravitational solitons and a black hole in four dimensions
Moaathe Belhaj Ahmed, Mois\'es Bravo-Gaete, Robert B. Mann, Constanza Quijada
https://arxiv.org/abs/2605.24783 https://mastoxiv.page/@arXiv_hepth_bot/116639897763402557
- Brane flows
Georgios Papadopoulos, Kostas Skenderis
https://arxiv.org/abs/2605.31181 https://mastoxiv.page/@arXiv_hepth_bot/116673829986872182
- Weyl conformal geometry vs Riemannian geometry of Weyl gauge invariant (dressed) metric
D. M. Ghilencea, V. -M. Mandric
https://arxiv.org/abs/2606.08080 https://mastoxiv.page/@arXiv_hepth_bot/116719153397467346
- Free-Field Construction of Heterotic String Compactified on Calabi-Yau Orbifolds via Corresponden...
Alexander Belavin, Doron Gepner, Grigory Makarov
https://arxiv.org/abs/2606.27490 https://mastoxiv.page/@arXiv_hepth_bot/116832327091097035
- Exact Planar Black Hole in AdS-Einstein-Scalar Gravity with IR-Emergent Nearly Conformal Fluid
Sangheon Yun
https://arxiv.org/abs/2606.31901 https://mastoxiv.page/@arXiv_hepth_bot/116843780286505261
- AdS Black Holes Are Short-Lived inside the Spectral Form Factor
Jos\'e L. F. Barb\'on, Eduardo Velasco-Aja
https://arxiv.org/abs/2607.21704
- Generalized comodule tube algebras for boundary and domain wall defects of (2 1)D topological order
Zhian Jia, Sheng Tan
https://arxiv.org/abs/2608.05071 https://mastoxiv.page/@arXiv_hepth_bot/117047570919781079
- Surviving correlations across a horizon: reflected entropy for bosonic fields in non-inertial fra...
Sayid Mondal
https://arxiv.org/abs/2608.05473 https://mastoxiv.page/@arXiv_hepth_bot/117053235449252443
- Cluster algebras and tilings for the m=4 amplituhedron
Even-Zohar, Lakrec, Parisi, Tessler, Sherman-Bennett, Williams
https://arxiv.org/abs/2310.17727 https://mastoxiv.page/@arXiv_mathCO_bot/111322217178993182
- Weak Correlations as the Underlying Principle for Linearization of Gradient-Based Learning Systems
Ori Shem-Ur, Khen Cohen, Aviv Orly, Yaron Oz
https://arxiv.org/abs/2401.04013
- Gravity and the Hierarchy Problem
Thede de Boer, Jisuke Kubo, Manfred Lindner, Markus Reinig
https://arxiv.org/abs/2510.12882 https://mastoxiv.page/@arXiv_hepph_bot/115382945122925880
toXiv_bot_toot

Non-invasive mapping of the temporal processing hierarchy in the human visual cortex https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1014434 by @…

Non-invasive mapping of the temporal processing hierarchy in the human visual cortex
Author summary Vision doesn’t happen instantaneously, but unfolds over time. While we understand a lot about how the brain processes visual space, understanding how the brain processes information over both space and time is much more challenging. Vision happens incredibly fast, space and time are tightly linked, but current technology is limited in capturing these spatiotemporal dynamics. Here, we developed a method that combines two non-invasive human brain imaging techniques using computat…

2026 NFL Power Rankings: Where Every Team Stands Heading Into The Season https://www.foxsports.com/stories/nfl/2026-nfl-power-rankings-where-every-team-stands-heading-season

Coupled quintessence from an axion dark sector
Rayff de Souza, Edmund J. Copeland, Jailson Alcaniz
https://arxiv.org/abs/2608.05032 https://arxiv.org/pdf/2608.05032 https://arxiv.org/html/2608.05032
arXiv:2608.05032v1 Announce Type: new
Abstract: Recent observational data arising from the DESI collaboration has hinted at a possible departure from the standard $\Lambda$CDM cosmological model, preferring instead the presence of a dynamical dark energy component. Specifically, the associated equation of state of the dark energy features a crossing into the so-called phantom regime, which is challenging to accommodate in canonical single scalar-field scenarios. However, this behavior can be effectively described by an interacting dark sector, where the specific dark energy equation of state remains above the phantom divide whilst the dark matter component deviates from the standard cold dark matter evolution. In this work, we explore this possibility in the context of an axion dark sector, where both the dark energy and dark matter are represented by two interacting axion-like fields. We show that given the required mass hierarchy for these fields to play such roles, their dynamics can be effectively placed in the coupled quintessence framework, where their motion follows from a sourced continuity equation in the fluid description. In this regime, we perform a statistical analysis of this scenario with current data, finding that a sub-Planckian dark energy axion decay constant stays well within the observational bounds without the need to fine-tune the associated field's initial conditions. We also perform a comparison with $\Lambda$CDM, where we find that the model provides a better fit to the data while staying competitive from a Bayesian perspective.
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2026 NFL Power Rankings: Where Every Team Stands Heading Into The Season https://www.foxsports.com/stories/nfl/2026-nfl-power-rankings-where-every-team-stands-heading-season

“Do you think emojis will ever become part of formal language? Are we going to see emojis in laws or letters from the pension fund?” - Emojis are mainly used in informal language, because (or that’s why?) one of their main functions is to signal closeness, familiarity and a lack of hierarchy between the conversation participants. This is also the reason why a lack of emojis from a personal chat message may trigger questions like “what have I done?!”, because it could signal that the friendly relationship is disturbed. So I think emojis wouldn’t be used in legal code. But in official letters, maybe! I once received an email from a university administrator with a ☺️ and I appreciated it a lot.
#emojis #linguistics #WorldEmojiDay

An adaptive fractional state links circuit mechanisms to cortical dynamics across the visual hierarchy
Brendan Harris, Pulin Gong
https://arxiv.org/abs/2609.37355 https://

🎯 Runs a full execution loop from a single goal: scope, implement, test, review, repair and verify, stopping only for decisions, permissions or blockers it cannot safely resolve
🔧 A layered agent hierarchy separates coordination, management, execution and independent judgment, so no single agent plans, approves and verifies its own work

Replaced article(s) found for hep-th. https://arxiv.org/list/hep-th/new
[2/3]:
- Toward an Observable Algebra for de Sitter Space: Gap Protection and Modular Dressings
Hassan ElSayed
https://arxiv.org/abs/2607.26194 https://mastoxiv.page/@arXiv_hepth_bot/117007888988009612
- Extended Scalar Particle Solutions in Black String Spacetimes with Anisotropic Quintessence
M. L. Deglmann, B. V. Sim\~ao, C. C. Barros Jr
https://arxiv.org/abs/2504.17765 https://mastoxiv.page/@arXiv_grqc_bot/114397428123774125
- Universal supercritical thermodynamics for black holes
Shoucheng Wang, Xinyang Li, Yuliang Jin, Li Li
https://arxiv.org/abs/2506.10808 https://mastoxiv.page/@arXiv_grqc_bot/114675464316469493
- Running Quantum Computers in Discovery Mode
Aydin Deger, Benedikt Placke, G. J. Sreejith, Alessio Lerose, S. L. Sondhi
https://arxiv.org/abs/2507.01013 https://mastoxiv.page/@arXiv_quantph_bot/114783153034025740
- Full Eigenstate Thermalization in Integrable Spin Systems
Tanay Pathak
https://arxiv.org/abs/2510.05887 https://mastoxiv.page/@arXiv_condmatstatmech_bot/115337676705890347
- Boundary structure of gauge fields on asymptotically AdS spaces
Maxim Grigoriev, Mikhail Markov
https://arxiv.org/abs/2512.06576 https://mastoxiv.page/@arXiv_mathph_bot/115688746382829511
- Improved frequency hierarchy treatment for anisotropic spectral distortions
Jens Chluba, Sara Evangelista, Tom Daman, Geoff Vasil
https://arxiv.org/abs/2602.14963 https://mastoxiv.page/@arXiv_astrophCO_bot/116085543680916118
- Black-Hole Microstate Hair Requires a Horizon Measurement
Sudhanva Joshi, Sunil Kumar Mishra
https://arxiv.org/abs/2604.28050 https://mastoxiv.page/@arXiv_quantph_bot/116498398591886253
- Unified dark sector and Hubble-tension alleviation in scalar-vector-tensor gravity
Kimet Jusufi, Amir A. Khodahami, Ahmad Sheykhi, Jackson Levi Said, Emmanuel N. Saridakis
https://arxiv.org/abs/2605.14977 https://mastoxiv.page/@arXiv_grqc_bot/116577642488987255
- Exact spectrum and anomalous relaxation in the open disorder-free Sachdev-Ye-Kitaev system
Soshun Ozaki, Hironobu Yoshida, Hosho Katsura
https://arxiv.org/abs/2606.08079 https://mastoxiv.page/@arXiv_condmatstrel_bot/116719187444301432
- Energy Flux as an Entanglement Current in Moving-Mirror Radiation
Yasusada Nambu, Riku Yoshimoto
https://arxiv.org/abs/2607.19763 https://mastoxiv.page/@arXiv_grqc_bot/116968262813501741
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Want real executive presence?
It's not about lowering your voice or cutting slides.
It's about remembering that authority lives inside you. Not in a title or rank.
When you stop performing for approval, you find groundedness. You listen fully. You respond in your own time.
That's gravitas.
What would change if you led from sovereignty instead of hierarchy?

how to get that corporate "it" factor
the surprisingly simple fast-track to gravitas

NFL Power Rankings, Week 4: 49ers claim No. 1 spot! Raiders, Vikings enter top 10; Patriots drop to 31 https://www.nfl.com/news/nfl-power-rankings-week-4-2026-nfl-season

Deformation algorithm: Deforming (2 1)-dimensional integrable systems to higher dimensional ones
Wang Fa-Ren, Jia Man, Lou S Y
https://arxiv.org/abs/2608.01293 https://arxiv.org/pdf/2608.01293 https://arxiv.org/html/2608.01293
arXiv:2608.01293v1 Announce Type: new
Abstract: The deformation algorithm based on conservation laws can lift (1 1)-dimensional integrable systems to higher-dimensional counterparts while preserving Lax integrability, yet its generalization to (2 1)-dimensional models has remained an open problem. This paper establishes a unified deformation framework for two (2 1)-dimensional integrable equations: the anisotropic Kadomtsev-Petviashvili (KP) equation and the isotropic Nizhnik-Novikov-Veselov (NNV) equation. By introducing a set of mutually commuting field-dependent deformation operators, we systematically construct infinite families of ($m 3$)-dimensional integrable KP and NNV hierarchies, derive their closed-form Lax pairs, and rigorously verify integrability via the vanishing commutator condition of Lax operators. For each high-dimensional hierarchy, concrete finite-dimensional master systems are obtained by truncating auxiliary spatial variables: a (3 1)-dimensional KP system and a (4 1)-dimensional generalized NNV system. Further symmetry reductions recover the original (2 1)-dimensional KP and NNV equations, and more importantly produce two distinct Harry-Dym (HD)-type reciprocal integrable systems. The KP reduction yields an anisotropic (2 1)-dimensional HD model, while the NNV reduction generates the first spatially isotropic two-space-dimensional HD system reported so far, filling a notable gap in existing literature. Parallel comparison of the KP and NNV branches reveals that the spatial symmetry of the original two-dimensional parent equation directly governs the symmetry properties of its high-dimensional deformations and HD dual subsystems. Our work not only extends the conservation-law deformation conjecture beyond (1 1)-dimensions to accommodate both strong Lax and weak Lax structures, but also provides a universal route to construct reciprocal links for multi-dimensional integrable systems.
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Under new European Union rules, businesses must prioritise keeping unsold clothing or shoes in use by selling them (including through discounts or alternative markets), donating them to charities or social enterprises, or preparing them for reuse (repairing, refurbishing or remanufacturing).
Destruction will be allowed only under specified circumstances and must be carried out in accordance with the waste treatment hierarchy, giving priority to recycling

Ban on destruction of unsold clothes and shoes enters into application
Under the new rules, businesses must prioritise keeping products in use by selling them or preparing them for reuse.

Cosmic Velocity Flows: from Theory to Observations
Saee Dhawalikar
https://arxiv.org/abs/2608.03530 https://arxiv.org/pdf/2608.03530 https://arxiv.org/html/2608.03530
arXiv:2608.03530v1 Announce Type: new
Abstract: The Large-Scale Structure (LSS) of the Universe forms a complex network of nodes, filaments, sheets, and voids known as the Cosmic Web. As current and upcoming galaxy surveys increasingly probe the quasi-linear and non-linear regimes of structure formation, understanding its geometry and dynamics is essential for precision cosmology. In particular, cosmic filaments, which channel matter across the web, are central to these dynamical processes.
This thesis develops numerical tools to study the non-linear cosmic web. First, the Sahyadri suite of high-resolution cosmological $N$-body simulations is introduced, providing a framework for precision studies of LSS and its cosmological dependence. A calibration framework for filament reconstruction is then developed using controlled filament realizations, enabling systematic investigation of reconstruction biases. The effects of filament curvature and reconstruction noise on inferred filament properties are quantified, and a novel Fourier-space smoothing approach is introduced to improve profile recovery.
The thesis further presents Skeletor, a Voronoi-based filament finder that identifies filamentary structures directly from discrete tracers while explicitly incorporating the hierarchical nature of the cosmic web. A novel framework for classifying sub-filamentary structure is developed. Applying these tools to cosmological simulations reveals distinct properties of filament substructure and provides a detailed view of filament phase space, including coherent inflows, multistreaming, and caustic-like features.
Together, these developments provide a framework for studying the geometry, hierarchy, and dynamics of the non-linear cosmic web. More broadly, they contribute to the ongoing effort to build a physically motivated understanding of the non-linear cosmic web beyond traditional measures of clustering.
toXiv_bot_toot

Herd Hierarchy: Are The Raiders Legit? Seahawks Fall, While Bills

Downs, Durant may dictate Dallas Cowboys’ CB hierarchy as slot rules https://cowboyswire.usatoday.com/story/sports/nfl/cowboys/2026/07/20/cowboys-training-camp-slot-coverage-battles/90977292007/

NFL Power Rankings, Week 3: Bengals, Chiefs climb; Bears, Buccaneers plummet https://www.nfl.com/news/nfl-power-rankings-week-3-2026-nfl-season

This is the petroleum age. It orders our world. It is at the heart of the military industrial complex that maintains the global hierarchy. Cars are not only a symbol of social hierarchy, but a mechanism to maintain it.
That age must end if humanity is to survive. When it ends, the wealth disparity it enabled must also collapse.
https://www.cbc.ca/news/world/gas-price-protests-worldwide-9.7346031

2026 NFL Power Rankings: Where Every Team Stands Heading Into Training Camp https://www.foxsports.com/stories/nfl/2026-nfl-power-rankings-where-every-team-stands-heading-training-camp

EDIT: boosts no longer needed thanks to @… with the find!
In case anyone else wants to read a sweet article about action hierarchies in video game play, the link via the wayback machine is: #GameDesign

Parameterized Verification of Deterministic MPI Programs
Stephen F. Siegel
https://arxiv.org/abs/2607.18049 https://arxiv.org/pdf/2607.18049 https://arxiv.org/html/2607.18049
arXiv:2607.18049v1 Announce Type: new
Abstract: We consider the problem of verifying a message passing program in which the number of processes is a parameter NP and each process knows its unique ID. Processes communicate using send and receive commands which specify a single destination or source. To verify the program, the user provides functions specifying the number of messages sent from process i to process j, the level of each communication event in the happens-before hierarchy, and a fact that holds for the k-th message sent from i to j. These are used to transform the program to a parameterized sequential program which can be verified using any techniques appropriate for such programs. We realize this approach in an extension to Frama-C/Wp to verify C/MPI programs.
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Fast VEM Fluid Simulation
Runze Zhang, Bo Ren
https://arxiv.org/abs/2607.17725 https://arxiv.org/pdf/2607.17725 https://arxiv.org/html/2607.17725
arXiv:2607.17725v1 Announce Type: new
Abstract: The intricate motion arising from fluid--boundary interactions is visually compelling, yet notoriously difficult and computationally expensive to simulate in the presence of complex boundaries. Accurately resolving boundary geometry requires body-fitted grids constructed via cut-cell methods, which often leads to poorly conditioned linear systems in the pressure projection stage and, consequently, prohibitive computational cost. We present FastVEM, an efficient boundary-conforming fluid simulation framework that enables high-fidelity flow--boundary interaction at substantially reduced cost. Computational efficiency is achieved through a coordinated, top-down design spanning numerical discretization, grid construction, and linear solvers. FastVEM adopts a Virtual Element Method (VEM) discretization to robustly enforce incompressibility and boundary conditions on irregular body-fitted grids, and employs a VEM polynomial-space Particle-in-Cell scheme for advection. Complementing this discretization, a convexity-preserving cut-cell strategy is introduced to construct simulation-friendly body-fitted grids. To accelerate pressure projection, we develop a Galerkin geometric multigrid solver featuring a diffusion-free prolongation operator that prevents coarse-level matrix densification, along with a nested, boundary-aware grid hierarchy that ensures well-posed placement of coarse-level degrees of freedom. Compared to prior cut-cell--based fluid simulators, FastVEM speeds up the computationally dominant pressure projection stage by up to 100x, while robustly handling even more challenging boundary geometries.
toXiv_bot_toot

Potential Applications of HBF in LLM Serving Systems
Yihan Yin, Yinlun Zhao, Zhixin Yun, Guanying Wu, Feng Zhu, Kai Tao, Shu Li, Fei Huang, Zhe Zhang, Shuangchen Li, Hongzhong Zheng
https://arxiv.org/abs/2608.13127 https://arxiv.org/pdf/2608.13127 https://arxiv.org/html/2608.13127
arXiv:2608.13127v1 Announce Type: new
Abstract: LLM serving is increasingly constrained by memory capacity as model weights, KV caches, and the number of served model variants continue to grow. This report examines High-Bandwidth Flash (HBF) as a capacity-oriented extension to HBM-based serving systems. We first discuss how HBF can be integrated into the GPU memory hierarchy without undermining the bandwidth expected by the compute die. We then model the system-level value of added capacity as expanded residency for read-mostly model-state objects. Under this view, HBF can improve MoE serving by enabling more expert replicas and can improve multi-model serving by reducing model loading and supporting hot-model replication. Our simulation results show that these benefits depend on preserving the HBM-resident execution path while using HBF to expand the resident set of model weights.
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Holographic Renormalization for String-Derived Lovelock--Horndeski Theory
Tianhao Wu
https://arxiv.org/abs/2608.13319 https://arxiv.org/pdf/2608.13319 https://arxiv.org/html/2608.13319
arXiv:2608.13319v1 Announce Type: new
Abstract: String-derived higher-curvature scalar--tensor gravities encode microscopic coupling data in boundary response, raising the question of whether holographic observables can reconstruct the underlying higher-dimensional parameters. We answer this question for the five-dimensional string-derived Lovelock--Horndeski (SDLH) theory on its exact linear-dilaton asymptotically locally AdS branch, constructing the renormalized generating functional for an arbitrary boundary metric and spacetime-dependent scalar source. A boundary-covariant radial hierarchy unifies the variational problem, local backreaction, logarithmic obstruction, finite one-point functions, and Ward identities. Two response determinants organize the recursion, resonant obstructions, and metric--scalar mixing. The Weyl anomaly condenses into an Euler density, a Weyl-squared density, and a single curvature--scalar square whose paired variations generate the metric and scalar obstructions. The resulting renormalized functional carries string-selected coupling data into boundary geometry, operator response, anomaly coefficients, and a calculable interface with gravitational observables. On the regular branch, four scalar-normalization-invariant holographic combinations admit a global rational inverse to the continuous reduced couplings. At fixed compactification dimension the map has maximal rank, while the curvature-anomaly sum reconstructs the higher-dimensional Gauss--Bonnet coefficient without sign ambiguity. Holographic response thus provides an explicit, overdetermined boundary fingerprint of the underlying string reduction.
toXiv_bot_toot

SCALE-Sim EVA: Design Principles for an Extensible, Visualizable, and Adaptable Accelerator Simulation Framework
Jingtian Dang, Ritik Raj, Tushar Krishna
https://arxiv.org/abs/2608.12354 https://arxiv.org/pdf/2608.12354 https://arxiv.org/html/2608.12354
arXiv:2608.12354v1 Announce Type: new
Abstract: Modern AI accelerators increasingly combine heterogeneous compute units, hierarchical memories, local buffers, and specialized data movement paths. This diversity makes fixed accelerator simulators difficult to extend beyond their original execution model. We present SCALE-Sim EVA, an extensible, visualizable, and adaptable simulation framework for IR-aware accelerator modeling. EVA represents workloads as tensor-based commands, tracks runtime tensor placement and readiness, and executes commands on composable hardware components with user-defined functional units and memory behavior. Instead of replaying address-level cycle traces, EVA computes cycle timing from tensor readiness, hardware-unit availability, and modeled operation or transfer latency. Its command decomposition mechanism bridges compiler-level IR granularity and hardware-level execution granularity, allowing global tensor operations to be lowered and scheduled locally across a hardware hierarchy. EVA also emits open command and storage traces for visual analysis of execution timelines, memory occupancy, and resource contention.
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