__dev
@__dev@lemmy.world
- Comment on Apple argues in favor of selling Macs with only 8GB of RAM 7 months ago:
Wrong. Unified memory (UMA) is not an Apple marketing term, it’s a description of a computer architecture that has been in use since at least the 1970’s. For example, game consoles have always used UMA.
Apologies, my google-fu seems to have failed me. Search results are filled with only apple-related results, but I was now able to find stuff from well before. Though nothing older than the 1990s.
While iGPUs have existed for PCs for a long time, they did not use a unified memory architecture.
Do you have an example, because every single one I look up has at least optional UMA support. The reserved RAM was a thing but it wasn’t the entire memory of the GPU instead being reserved for the framebuffer. AFAIK iGPUs have always shared memory like they do today.
It has everything to do with soldering the RAM. One of the reason iGPUs sucked, other than not using UMA, is that GPUs performance is almost limited by memory bandwidth. Compared to VRAM, standard system RAM has much, much less bandwidth causing iGPUs to be slow.
I don’t disagree, I think we were talking past each other here.
LPCAMM is a very recent innovation. Engineering samples weren’t available until late last year and the first products will only hit the market later this year. Maybe this will allow for Macs with user-upgradable RAM in the future.
Here’s a link to buy some from Dell: www.dell.com/en-us/shop/…/memory. Here’s the laptop it ships in: www.dell.com/en-au/…/precision-16-7670-laptop. Available since late 2022.
What use is high bandwidth memory if it’s a discrete memory pool with only a super slow PCIe bus to access it?
Discrete VRAM is only really useful for gaming, where you can upload all the assets to VRAM in advance and data practically only flows from CPU to GPU and very little in the opposite direction. Games don’t matter to the majority of users. GPGPU is much more interesting to the general public.
gestures broadly at every current use of dedicated GPUs. Most of the newfangled AI stuff runs on Nvidia DGX servers, which use dedicated GPUs. Games are a big enough industry for dGPUs to exist in the first place.
- Comment on Apple argues in favor of selling Macs with only 8GB of RAM 7 months ago:
“unified memory” is an Apple marketing term for what everyone’s been doing for well over a decade. Every single integrated GPU in existence shares memory between the CPU and GPU; that’s how they work. It has nothing to do with soldering the RAM.
You’re right about the bandwidth though, current socketed RAM standards have severe bandwidth limitations which directly limit the performance of integrated GPUs. This again has little to do with being socketed though: LPCAMM supports up to 9.6GT/s, considerably faster than what ships with the latest macs.
This is why user-replaceable RAM and discrete GPUs are going to die out. The overhead and latency of copying all that data back and forth over the relatively slow PCIe bus is just not worth it.
The only way discrete GPUs can possibly be outcompeted is if DDR starts competing with GDDR and/or HBM in terms of bandwidth, and there’s zero indication of that ever happening. Apple needs to puts a whole 128GB of LPDDR in their system to be comparable (in bandwidth) to literally 10 year old dedicated GPUs - the 780ti had over 300GB/s of memory bandwidth with a measly 3GB of capacity. DDR is simply not a good choice GPUs.
- Comment on Please Stop 8 months ago:
Distributed ledger data is typically spread across multiple nodes (computational devices) on a P2P network, where each replicates and saves an identical copy of the ledger data and updates itself independently of other nodes. The primary advantage of this distributed processing pattern is the lack of a central authority, which would constitute a single point of failure. When a ledger update transaction is broadcast to the P2P network, each distributed node processes a new update transaction independently, and then collectively all working nodes use a consensus algorithm to determine the correct copy of the updated ledger. Once a consensus has been determined, all the other nodes update themselves with the latest, correct copy of the updated ledger.
From your first link. This does not describe how git functions. Did you actually read the page?
The consensus problem requires agreement among a number of processes (or agents) for a single data value. Some of the processes (agents) may fail or be unreliable in other ways, so consensus protocols must be fault tolerant or resilient. The processes must somehow put forth their candidate values, communicate with one another, and agree on a single consensus value.
From your second this. Again this description does not match with git.
You’re right in that automation is not technically required; you can build a blockchain using git by having people perform the distribution and consensus algorithms themselves. Obviously that doesn’t make git itself a blockchain in the same way it doesn’t make IP a blockchain.
- Comment on Please Stop 8 months ago:
Key word distributed ledger. Git repositories don’t talk to each other except when told to do so by users.
I shouldn’t need to explain why an access key is not a consensus algorithm. Seriously?
- Comment on Please Stop 8 months ago:
Well, I’m saying Circulor is most likely lying about their “blockchain” actually being a blockchain, or that they’ve pointlessly set up extra nodes to perform redundant work in order to avoid technically lying.
Blockchain is completely pointless without 3rd parties being part of the network. It’s like me saying I run a personal social network for just myself.
- Comment on Please Stop 8 months ago:
Git is not a blockchain. There is no distributed ledger; no consensus algorithm.
- Comment on Please Stop 8 months ago:
Polestar uses contracts and audits to ethically source materials, not blockchain. It uses blockchain as a shitty append-only SQL database to (apparently) tell you where the materials came from. Let me quote from Circulor’s website:
data can be fed seamlessly to the blockchain via system integration using RESTful Web Service APIs with security and authentication protocols
So the chain is private and accessible only through a centralized, authenticated REST API. This is a traditional web application. A centralized append-only ledger is not even a blockchain.
- Comment on A And B 9 months ago:
There’s a decent chance that’s still the salt lamp.
- Comment on Car dealers say they can’t sell EVs, tell Biden to slow their rollout 11 months ago:
The only one I’ve seen is the VW “e-up!”.
- Comment on Fairphone has created a smartphone that owners can repair themselves - This sustainable smartphone aims to reduce global electronic waste 11 months ago:
There’s vulnerabilities like the recent iMessage exploit that are executed remotely through no interaction by the user. In combination with the ability to self-spread you get mass exploits like WannaCry which spread to 300k+ computers in 7 hours. All you need is a network connection.
- Comment on Amazon Prime Video is able to remove a video from your library after purchase. 1 year ago:
So you push digital goods to a robust public platform like IPFS and tie decryption to a signed, non-revokable, rights token that you own on a block chain.
What you describe is fundamentally impossible. In order to decrypt something you need a decryption key. Put that on the blockchain and anyone can decrypt it.
Even if you can, pirates would only need to buy a single decryption key and suddenly your movie might as well be freely available to download. Pirates never pay hosting fees because it’s using the same infrastructure as customers and they can’t be taken down because they’re indistinguishable from customers.
- Comment on Amazon Prime Video is able to remove a video from your library after purchase. 1 year ago:
Adding blockchain into the mix changes nothing. Whether your digital ownership is stored in their centralized database or a distributed database, they still have control over everything because they’re the ones streaming it to you. They can just as well block your access & block resale.
The only way to actually digitally own something is to have a full DRM-free copy of it (ianal though this still might not be enough to allow resale).
- Comment on Intel announces Thunderbolt 5 with double the bandwidth (40 Gbps to 80 Gbps) 1 year ago:
Apple still uses intel chips in all their macs, just not for the CPU. The M1 Macbook for instances uses an Intel JHL8040R thunderbolt 4 chip.
- Comment on Apple 15 relegated to USB 2.0 unless you buy the Pro 1 year ago:
It’s a little complicated. A USB-3 connection must provide higher current 900mA than a USB-2 connection 500mA. As such a USB-3 data connection can charge faster than a USB-2 connection - some people may call this “fast charging”.
However USB-PD (Power Delivery, aka fast charging) was released as part of the USB 3.1 specification, but it does not require a USB-3 data connection and neither does a USB-3 data connection require USB-PD. You can see all the different USB-C modes on Wikipedia as well, where USB-2 and Power Delivery are listed separately: en.wikipedia.org/wiki/USB-C#USB-C_receptacle_pin_…
- Comment on Intel announces Thunderbolt 5 with double the bandwidth (40 Gbps to 80 Gbps) 1 year ago:
If it was free to use then AMD would support it too
They do. There’s thunderbolt motherboards and it’s coming with USB-4 on the new 7000-series mobile chips.
- Comment on Oxford study proves heat pumps triumph over fossil fuels in the cold 1 year ago:
You’d need to collect the condensate, but that would actually work quite well.
- Comment on All smartphones, including iPhones, must have replaceable batteries by 2027 in the EU 1 year ago:
You say that like Apple would have to put in a ton of work for that. Android can already run on iPhones. It’s just an ARM computer. Project Sandcastle already exists. All they have to do is allow unlocking the bootloader just like they do on macs.
- Comment on All smartphones, including iPhones, must have replaceable batteries by 2027 in the EU 1 year ago:
Most of the ebikes and motor scooters I’ve seen have removable batteries. Gogoro in India even has a battery swapping network for their scooters.
- Comment on Intel 'Downfall': Severe flaw in billions of CPUs leaks passwords and much more 1 year ago:
AVX-2 has been in pretty much every CPU since 2011. For AVX512 intel’s been shipping that to consumers since Ice Lake 2019.
- Comment on sudo rm -🇫🇷 /* 1 year ago:
At least it’s transparent and often doesn’t require root, unlike say a debian package.