Tootfinder

This https://arxiv.org/abs/2501.14380 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Verifying Fault-Tolerance of Quantum Error Correction Codes
Quantum computers have advanced rapidly in qubit count and gate fidelity. However, large-scale fault-tolerant quantum computing still relies on quantum error correction code (QECC) to suppress noise. Manually or experimentally verifying the fault-tolerance property of complex QECC implementation is impractical due to the vast error combinations. This paper formalizes the fault-tolerance of QECC implementations within the language of quantum programs. By incorporating the techniques of quantum s…

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#USpol

On Fault Tolerance of Data Storage Systems: A Holistic Perspective
Mai Zheng, Duo Zhang, Ahmed Dajani
https://arxiv.org/abs/2507.03849 https://

On Fault Tolerance of Data Storage Systems: A Holistic Perspective
Data storage systems serve as the foundation of digital society. The enormous data generated by people on a daily basis make the fault tolerance of data storage systems increasingly important. Unfortunately, modern storage systems consist of complicated hardware and software layers interacting with each other, which may contain latent bugs that elude extensive testing and lead to data corruption, system downtime, or even unrecoverable data loss in practice. In this chapter, we take a holistic v…

Near-Threshold Voltage Massive MIMO Computing
Mikael Rinkinen, Mehdi Safarpour, Shahriar Shahabuddin, Olli Silven, Lauri Koskinen
https://arxiv.org/abs/2509.06651 https://

Near-Threshold Voltage Massive MIMO Computing
Massive MIMO systems have the potential to significantly enhance spectral efficiency, yet their widespread integration is hindered by the high power consumption of the underlying computations. This paper explores the applicability and effectiveness of Algorithm-Based Fault Tolerance (ABFT) for massive MIMO signal processing to tackle the reliability challenge of Near Threshold Computing (NTC). We propose modifying matrix arithmetic Newton iteration MIMO algorithm to seamlessly integrate ABFT to…

Phase Noise Tolerance for Low-Pilot-Overhead OFDM Terahertz Links Beyond 64-QAM
Bowen Liu, Takasumi Tanabe
https://arxiv.org/abs/2508.05026 https://arxiv.o…

Phase Noise Tolerance for Low-Pilot-Overhead OFDM Terahertz Links Beyond 64-QAM
THz wireless communications have garnered significant attention due to their unprecedented data rates enabled by the abundant untapped spectrum. However, advanced modulation formats beyond 64-QAM remain largely unexplored, as phase errors introduced during up/down-conversion severely limit system performance. Particularly, OFDM transmission is highly susceptible to aggravated ICI induced by phase noise, undermining the orthogonality of subcarriers. While PLLs and pilot-assisted compensation can…

Modulation of structural short-range order due to chemical patterning in multi-component amorphous interfacial complexions
Esther C. Hessong, Zhengyu Zhang, Tianjiao Lei, Mingjie Xu, Toshihiro Aoki, Timothy J. Rupert
https://arxiv.org/abs/2509.06166

Modulation of structural short-range order due to chemical patterning in multi-component amorphous interfacial complexions
Amorphous interfacial complexions have been shown to restrict grain growth and improve damage tolerance in nanocrystalline alloys, with increased chemical complexity stabilizing the complexions themselves. Here, we investigate local chemical composition and structural short-range order in Cu-rich, multi-component nanocrystalline alloys to understand how dopants self-organize within these amorphous complexions and how local structure is altered. High resolution scanning transmission electron mic…

What, exactly, constitutes a “conservative idea?”
That dictatorship is preferable to democracy?
That white Christian nationalism is better than tolerance and openness?
That social Darwinism is superior to human decency?
The claim that higher education must be more open to such “conservative ideas” is dangerous drivel.
So what’s the real, underlying reason for the Trump regime’s attack on education?
Not incidentally, that attack extends to grade school.

This https://arxiv.org/abs/2505.12857 has been replaced.
initial toot: https://mastoxiv.page/@ar…

The influence of pixel cell layout on the timing performance of 3D sensors
Three-dimensional (3D) pixel sensors are a promising technology for implementing the 4D-tracking paradigm in high-radiation environments. Despite their advantages in radiation tolerance, 3D pixel sensors exhibit non-uniform electric and weighting fields that can degrade timing performance. This study explores the impact of pixel cell geometry on the timing characteristics of 3D columnar-electrode sensors fabricated by IMB-CNM, comparing square and hexagonal layouts. The sensors were characteriz…

#Matplotlib has a lot of "image comparison tests" that are horrible fragile. Technically, most of them permit some deviation from the reference images, but quite often I've been getting higher RMS than that. So for a long time, we've been maintaining patches that increased the tolerance in tests, and regularly either had to be rebased and updated for new tests.
At some point upstream started adding conditions permitting higher tolerance on non-x86_64 platforms. Of course, these changes forced me to rebase our patches. Curious enough, my previous overrides often happened to be close to the tolerance given for non-x86_64 platforms.
Today, it finally occurred to me that instead of updating the patch once again, I can try dropping it entirely and just sed-ing all `platform.machine() == 'x86_64'` with `False`. And guess what — down to 3 failures (related to TeΧ). And I don't have to spend 15 minutes manually doing what effectively accounted to the same thing.
#Gentoo #Python