sradman

21 ms·

151.
by sradman 6y ago
> but the claim is that the buffer you should remove is the OS's one I was not trying to minimize O_DIRECT, I was trying to emphasize the key advantage succinctly and also explain the Apache Arrow use case of mmap which the article
152.
by sradman 6y ago
> Although Java has evolved over the years, the core of the JVM has maintained stability – to the point where applications compiled with Java 1.0 can still be run on modern JVMs, albeit much faster. The bytecode format has (largely) rema
153.
by sradman 6y ago
O_DIRECT prevents file double buffering by the OS and DBMS page cache. MMAP removes the need for the DBMS page cache and relies on the OS’s paging algorithm. The gain is zero memory copy and the ability for multiple processes to access the
154.
by sradman 6y ago
The paper Restoring metabolism of myeloid cells reverses cognitive decline in ageing [1]: > Here we show that in ageing mice myeloid cell bioenergetics are suppressed in response to increased signalling by the lipid messenger prostagla
155.
by sradman 6y ago
Wayne Gretzky: "I skate to where the puck is going, not where it has been.” Intel Acquires Artificial Intelligence Chipmaker Habana Labs [1]: > Intel estimates the total addressable market (TAM) for AI silicon by 2024 will be grea
156.
by sradman 6y ago
I think Jeffbee resolved my confusion; InnoDB uses spin locks that chew up cpu cycles when the request rate exceeds the I/O rate. This is not as bad as it sounds; it uses extra power and generates extra heat but it is not doing any ext
157.
by sradman 6y ago
I did a quick search and it looks like InnoDB implements a spin-lock. Do you see increased CPU utilization when the buffer pool is overloaded? This could explain the behavior described in the article.
158.
by sradman 6y ago
> driven by record PC-centric revenue with PC unit volumes up 33 percent YoY led by record notebook sales. I think we need more details on the CCG split between notebooks and desktops. When I chose "Laptop" as the description o
159.
by sradman 6y ago
> But the main point is that you have to really think about how to re-architect your software to take advantage of huge multi-processor machines. I appreciate the response but it doesn't address my question: given that Let's En
160.
by sradman 6y ago
I think this is a negative sum outcome. The key metric is customer value and the Apache License had previously struck a balance between commercialization and customer lock-in. The Cloud gorillas (AWS, Azure, GCP, and Alibaba) have disrupted
161.
by sradman 6y ago
> Which sounds like traditional master/slave setup, with fail over? Yes, thank you. I assumed that the emphasis on the speed of NVMe drives meant that master/slave synchronous replication was avoided and asynchronous replicatio
162.
by sradman 6y ago
I think Intel SIMD (AVX-512) is still best-of-class for vector math. Run Length Encoded algorithms in column stores like SAP HANA are currently the key use-case (revenue/market wise). What I've learned since the release of Apple M
163.
by sradman 6y ago
> We can clearly see how our old CPUs were reaching their limit. In the week before we upgraded our primary database server, its CPU usage (from /proc/stat) averaged over 90% This strikes me as odd. In my experience, traditiona
164.
by sradman 6y ago
Based on the same Covert Shores article, a Popular Mechanics article [1] has more TL;DR context in the title, The U.S. Navy Could Have Had a Submarine Aircraft Carrier , and opening: > During the 1950s, the advent of the atomic age forc
165.
by sradman 6y ago
In my estimation, Intel has four categories in which it is being outperformed by key competitors: 1. TSMC/Samsung - fabrication 2. AMD/Amazon-Graviton - Cloud Server 3. Apple-M1/AMD - Laptop 4. Nvidia/Amazon - Cloud ML&#
166.
by sradman 6y ago
GCM is Google Cloud Messaging [1] used for push notifications on Android and Chrome. > It has been superseded by Google's Firebase Cloud Messaging (FCM) on May 29, 2019. [1] https://en.wikipedia.org/wiki/Google_
167.
by sradman 6y ago
> ReScript is not just a rebranding: it’s a ReasonML which freed itself of the yoke of the OCaml ecosystem. By doing so, it forfeited compilation to native code and OCaml library interop, but gained a freer syntax which further resembles
168.
by sradman 6y ago
> Alibaba’s Hong Kong-listed shares jumped to finish 8.5% higher on the news Together with the geopolitics surrounding the COVID-19 pandemic, the public disappearance [1] of Jack Ma may turn out to be a key turning point for the modern C
169.
by sradman 6y ago
Substrate is the key component that enables Ahead-of-Time compiled Native Images [1] on GraalVM. Java on Truffle enables bytecode to be dynamically loaded in a Native Image. Before Java on Truffle, you had to choose either pure compiled or
170.
by sradman 6y ago
Mammalian aggression is described biologically within a framework of four categories: 1. Defensive 2. Social 3. Maternal 4. Predatory
171.
by sradman 6y ago
edge-sql [1] allows arbitrary SQLite queries to be executed over an immutable external data set. The demo uses a Forex data set stored in Workers KV. Client issued arbitrary queries is one of the use cases for GraphQL and publishing immutab
172.
by sradman 6y ago
> Becoming the cheap option is likely the beginning of a death spiral... Maybe. I didn't suggest becoming the cheap option I suggested re-evaluating its premium pricing strategy in the short-term to reflect current and future custom
173.
by sradman 6y ago
> Solution One: Breakup > Solution Two: Subsidies Solution Three: lower prices/margins (temporarily) to match the value proposition of AMD on Windows PCs and Linux Cloud servers.
174.
by sradman 6y ago
> Leading semiconductor manufacturers reassigned capacity from automakers last year after the pandemic slashed car sales, instead shipping chips to companies that produce smartphones, gaming systems and other tech gadgets that remained i
175.
by sradman 6y ago
> Poor reading, writing and numeracy skills in adults make up a literacy gap... the gap is due in part to an abundance of jobs in the past that do not require the daily use of reading comprehension and information synthesis skills. The p
176.
by sradman 6y ago
> add them to LLVM soon I’m not sure what “them” is. Apple has AMX, a Neural Engine, and a GPU which are abstracted through the Core ML and Accelerate libraries. AMX is not exposed as an instruction set like NEON. I guess this question a
177.
by sradman 6y ago
Sounds familiar [1]: > The Terminal is a 2004 American comedy-drama film... about an Eastern European man who becomes stuck in New York's John F. Kennedy Airport terminal when he is denied entry into the United States and at the sam
178.
by sradman 6y ago
> It will be important for it to be adopted as a first-class target language by CPU/GPU vendors.” I’m not sure what the Apple M1 SoC with AMX [1] means for Julia within the Apple ecosystem. [1] https://news.ycombinator.co
179.
by sradman 6y ago
The headline misrepresents Stephen Harper’s quote in the article: > It’s hard to see what the alternative is to the U.S. dollar as the world’s major reserve currency. Other than gold, Bitcoin, a whole basket of things [...] I think you’l
180.
by sradman 6y ago
The abstract of the preprint [1] starts: > There are two puzzles surrounding the Pleiades, or Seven Sisters. First, why are the mythological stories surrounding them, typically involving seven young girls being chased by a man associated

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