rrss

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61.
by rrss 4y ago
By your criteria, the Central Valley was never a great climate for growing things. A century ago there was not enough water in the San Joaquin valley, and people were talking about getting fresh water from hundreds of miles away. I assume
62.
by rrss 4y ago
There should be a page history with a comment describing why changes were made. The latest revision can describe the current best knowledge “without fluff”, and the revision history can show why and how the content changed over time. The C
63.
by rrss 4y ago
P.S. this part about needing irrigation is not unique to the Central Valley. Irrigation agriculture, rather than depending on natural water for growing, was an innovation humanity developed 6000+ years ago.
64.
by rrss 4y ago
No. More water arriving directly in the Central Valley would make it worse for agriculture, not better. Rain or snow are bad for crops. Controlled irrigation using water from somewhere else plus the mediterranean climate combine to make the
65.
by rrss 4y ago
long growing season sun good soil, almost all capability class 1 ideal mediterranean climate
66.
by rrss 4y ago
what is the relevance of needing to have a lot of pumps? Do you think the engineering involved is beyond the capability of the US, and your argument now is that it cannot be done? The idea that californias water projects only direct water d
67.
by rrss 4y ago
The Central Valley is not a desert, I do not like this meme. Farmers in California were running out of water 100 years ago too, and people responded with massive engineering projects to regulate water throughout the year and move it from pl
68.
by rrss 4y ago
Stallman’s hard line is pretty incoherent / absurd when it comes to firmware. The FSF does not care about proprietary firmware, provided that the firmware “installation is not intended after the user obtains the product.” https:/
69.
by rrss 4y ago
This does not explain why the IRS needs $80 billion. Do each of these problems take billions of dollars to fix? $1B ~= 1000 engineers working for 10 years. $1B ~= buying 1.6 ORNL frontier supercomputers.
70.
by rrss 4y ago
Related March 2021 preprint: https://arxiv.org/abs/2103.03074 Jan 2022 paper: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12...
71.
by rrss 4y ago
There are still a ton of systems which have firmware that does not support large or resizable BAR. Support only became common in the last year or two (after AMD marketed as SAM and pushed to get it supported). So requiring the “easy default
72.
by rrss 4y ago
Refer to “Practical uses of synchronized clocks in distributed systems” for some info on algorithms like this. https://dl.acm.org/doi/10.1145/112600.112601 Google spanner uses stuff like this with a clock called T
73.
by rrss 4y ago
The charge controller is surprisingly large (to me) relative to the rest of the system. I don’t have much experience - is there a reason it needs to be, or is the charge controller significantly overspec’d for this 50W panel? BOM (linked fr
74.
by rrss 4y ago
No. https://scholarship.law.cornell.edu/cgi/viewcontent.cgi?http...
75.
by rrss 4y ago
also, the waypoint-based restart protection used in AGC software to handle power failures and the decision to reuse that mechanism for handling running out of core sets or VAC areas was due to charley muntz, not hal laning. But regardless I
76.
by rrss 4y ago
I don’t think it’s a particularly accurate or fair simplification to say that overload during Apollo 11 was due to operator error. The rendezvous radar was intended to be enabled during landing to be prepared for an abort. It only caused pr
77.
by rrss 4y ago
> Apple Coalition of Organized Retail Employees – AppleCore – that will be part of the International Association of Machinists and Aerospace Worker Why are apple store employees going to be in a machinists union?
78.
by rrss 4y ago
My primary laptop is a 2011 MacBook Pro, running Ubuntu most of the time. I added RAM (to 8 GB) in 2013 or so and swapped the hard drive out for an SSD in 2015. I have been contemplating an upgrade for about 7 years but haven’t been able to
79.
by rrss 4y ago
How does one distinguish a build quality that is 100x better from a build quality that is only 10x better? I think the point is that it seems silly to say “two orders or magnitude” when there’s no quantitative metric. Is it more informative
80.
by rrss 4y ago
I’d like a job where I used more math - can you share your job & industry?
81.
by rrss 4y ago
> The parent comment linked to a tweet where he says everyone else working https://twitter.com/elonmusk/status/1531867103854317568 > hey elon a lot of people are talking about this leaked email, any addition
82.
by rrss 4y ago
consider an engineer hired at Tesla in 2019. They probably have a 4 year RSU schedule determined based on the TSLA share price in 2019, so $50. If their equity compensation target was $30k per year, then they would get stock grants in 2021
83.
by rrss 4y ago
Many reasonable CS degrees have no electronics or hardware in the curriculum.
84.
by rrss 4y ago
Last one was mid march, so every few months. The current plan (last I checked) is 2 more in this google-sponsored free program.
85.
by rrss 4y ago
One supplier: skywater. In 1990, Cypress Semiconductor acquired a Control Data fab, which became Cypress Fab 4. At some point they developed a 130nm process. In 2017, cypress sold the fab to skywater, which was formed specifically to operat
86.
by rrss 4y ago
Metal is apple’s api for writing software that uses their GPUs. https://en.m.wikipedia.org/wiki/Metal_(API)
87.
by rrss 4y ago
Speaking of drivers on the GPU: https://github.com/enfiskutensykkel/ssd-gpu-dma > Build userspace NVMe drivers and storage applications with CUDA support > libnvm can be linked with CUDA programs, enabling high-p
88.
by rrss 4y ago
No, just because general relativity and quantum field theory use linear algebra does not mean they are linear algebra.
89.
by rrss 4y ago
When you say the “whole imaging stack,” which one do you mean? EHT imaged M87 with four teams working independently using different methods. Each of those teams used algorithms that were published and validated before the EHT results were p
90.
by rrss 4y ago
> Scientific outreach has a real “draw the rest of the owl” problem It seems like this is just the “you need to study the problem and it’s dependencies for many years to understand the physics and mathematical details” problem. Which doe

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