embedded machine learning research engineer - georgist - urbanist - environmentalist

  • 117 Posts
  • 157 Comments
Joined 1 year ago
cake
Cake day: June 22nd, 2023

help-circle












  • The raison d’être for RISC-V is domain-specific architecture. Currently, computational demands are growing exponentially (especially with AI), but Moore’s Law is ending, which means we can no longer meet our computational demands by scaling single-core speed on general-purpose CPUs. Instead, we are needing to create custom architectures for handling particular computational loads to eke out more performance. Things like NPUs, TPUs, etc.

    The trouble is designing and producing these domain-specific architectures is expensive af, especially given the closed-source nature of computer hardware at the moment. And all that time, effort, and money just to produce a niche chip used for a niche application? The economics don’t economic.

    But with an open ISA like RISC-V, it’s both possible and legal to do things like create an open-source chip design and put it on GitHub. In fact, several of those exist already. This significantly lowers the costs of designing domain-specific architectures, as you can now just fork an existing chip and make some domain-specific modifications/additions. A great example of this is PERCIVAL: Open-Source Posit RISC-V Core with Quire Capability. You could clone their repo and spin up their custom RISC-V posit chip on an FPGA today if you wanted to.


















  • YIMBY:

    The YIMBY movement (short for “yes in my back yard”) is a pro-Infrastructure development movement mostly focusing on public housing policy, real estate development, public transportation, and pedestrian safety in transportation planning, in contrast and in opposition to the NIMBY (“not in my back yard”) movement that generally opposes most forms of urban development in order to maintain the status quo.[1][2][3] The YIMBY position supports increasing the supply of housing within cities where housing costs have escalated to unaffordable levels.[4] They have also supported infrastructure development project like improving housing development[5] (especially for affordable housing[6] or trailer parks[7]), high-speed rail lines,[8][3]homeless shelters,[9] day cares,[10] schools, universities and colleges,[11][12] bike lanes, and transportation planning that promotes pedestrian safety infrastructure.[2]

    YIMBYs often seek rezoning that would allow denser housing to be produced or the repurposing of obsolete buildings, such as shopping malls, into housing.[13][14][15] Some YIMBYs have also supported public-interest projects like clean energy or alternative transport.[16][17][18][19]

    The YIMBY movement has supporters across the political spectrum, including left-leaning adherents who believe housing production is a social justice issue, free-market libertarian proponents who think the supply of housing should not be regulated by the government, and environmentalists who believe land use reform will slow down exurban development into natural areas.[20] YIMBYs argue cities can be made increasingly affordable and accessible by building more infill housing,[21][22][23]: 1  and that greenhouse gas emissions will be reduced by denser cities.[24]

    Land value tax:

    A land value tax (LVT) is a levy on the value of land without regard to buildings, personal property and other improvements upon it.[1] It is also known as a location value tax, a point valuation tax, a site valuation tax, split rate tax, or a site-value rating.

    Some economists favor LVT, arguing they do not cause economic inefficiency, and help reduce economic inequality.[2] A land value tax is a progressive tax, in that the tax burden falls on land owners, because land ownership is correlated with wealth and income.[3][4] The land value tax has been referred to as “the perfect tax” and the economic efficiency of a land value tax has been accepted since the eighteenth century.[1][5][6] Economists since Adam Smith and David Ricardo have advocated this tax because it does not hurt economic activity, and encourages development without subsidies.

    LVT is arguably an ecotax because it discourages the waste of prime locations, which are a finite resource.[21][22][23] Many urban planners claim that LVT is an effective method to promote transit-oriented development.[24][25]




  • Parking minimums are legal requirements on the minimum number of parking spaces businesses and housing are allowed to have. The thing is these laws were developed using shoddy pseudoscience, are extremely arbitrary, and developed with maximum (rather than typical) usage in mind, meaning many developments have oversized parking lots, wasting valuable land. Further, old buildings that predate the parking minimums (and thus don’t have legally sufficient parking) can’t renovate or change usage without being legally required to build new parking, often by buying up a neighboring building and demolishing it to build a parking lot. This exact thing is why so many dense American and Canadian downtowns got bulldozed and turned into parking lots, like in the images below:

    Atlanta

    Tulsa

    Kansas City

    For more in-depth information on the insanity and idiocy that are parking minimums, see this video: https://youtu.be/OUNXFHpUhu8?si=KQbU00UPKw5GeNhQ






  • They’re not a solution simply because they’re still cars, and therefore take up the same grossly excessive amount of space as non-autonomous cars do.

    Yeah, the only things autonomous cars might reduce are:

    1. Parking, but only if we forego our current private ownership model and everyone starts doing self-driving robo-taxis everywhere (unlikely)
    2. Road fatalities, but only if the self-driving tech proves statistically better than human drivers in a wide range of conditions (jury is still out)

    It’s the same fundamental problem that electric cars have: geometry. Cars – even if electric and self-driving – are simply grossly inefficient at moving people for the amount of land they require: