calaphos

8 ms·

31.
by calaphos 4y ago
Sadly LCOE is a very bad metric when looking at intermittent and non dispatchable generation sources in a power grid. Especially so as they approach a meaningful fraction of total generation. The market goal of power generation after all is
32.
by calaphos 4y ago
I assume it's int8 operations (FMA would count as 2). At least that's the case with FLOPs, TOPs for AI accelerators is basically the same measure, with the changed acronym reflecting the non float data format.
33.
by calaphos 4y ago
Even if technically possible the economics of nuclear power plants don't favour only using them for peak loads. With gigantic initial captial investment and very low fuel costs (almost?) all nuclear power plants are used for base loads
34.
by calaphos 4y ago
> I can't see any way to go much lower than that without freezing in the winter. 2 kWh/day seems crazy low to me. Apart from insulation energy required for heating changes massively with local climate and scales directly with l
35.
by calaphos 4y ago
Capacity has decreased - mainly due to a lot of french nuclear reactors offline for scheduled and (correlated) unscheduled maintenance. France went from Europe's largest exporter to largest importer of power this year. Add to that a d
36.
by calaphos 4y ago
The number is for FP64 double precision terraflops. For vector operations, not matrix operations as well. Double precision is important for a lot of simulation codes because of numerical issues. For Deep learning applications it's basi
37.
by calaphos 4y ago
Similar classes of machines have been build and used for simulations in industries for decades now. In fact if you look through the historic top500 lists a lot of the space outside the top10 is occupied by industry clusters. Classically oil
38.
by calaphos 4y ago
> It makes we wonder if something like the Australia-Asia power link would make sense. There is the AAPowerLink project which proposes exactly this. It's a ~20GW solar farm in Australia with battery storage and a 4500km HVDC underse
39.
by calaphos 4y ago
> Yeah, seperate stations (edit: platforms, they can share the building) for high-speed trains will probably never happen, sadly. And as long as high speed trains share the platforms with regional trains, disruptions and delays will alwa
40.
by calaphos 4y ago
A major problem would he that the temperature delta for storage will be way smaller. There isn't really space for the same 500C below ambient in that direction :)
41.
by calaphos 4y ago
With more and more miniaturization such stochastical behaviour becomes more and more prevalent. Same with higher and higher speed interconnects. Forward error correction is standard on e.g. NAND flash, VRAM for GPUs and being adopted by fas
42.
by calaphos 5y ago
They have been shipping multi die CPUs for quite a while, but the interconnect is closer to a PCIe connection (slower, longer range, less contacts). Intels upcomming Saphire Rapid server CPUs are extremly similar, with wide connections betw
43.
by calaphos 5y ago
In benchmarks amperes cores are roughly as fast as a hyperthread on current gen Epyc. Sometimes more on heavily execution bound workloads, sometimes less.
44.
by calaphos 5y ago
The same issue exists with Jax. XLA compilation can take up quite a bit of time, especially on larger NN models. And theres no persistent compile cache, so even if you don't change the jitted function you need to wait for compilation a
45.
by calaphos 5y ago
Per transistor performance in M1 isn't any better than the x86 opposition, quite the opposite in fact. The standard M1 has 60% more transistors than a current gen Ryzen mobile chip, while having halve the large cores (and significantly
46.
by calaphos 5y ago
We had similar discussions in Germany on taxes on any CO2 emissions. There were proposals of redistributing some of the earnings to people with very low emissions, a bit similar to negative income tax rates in concept. Sadly never really we
47.
by calaphos 5y ago
One could even eliminate the heavy and potential dangerous battery with some sort of overhead wire or rail contact. And since the cars can only move in one direction within a tunnel, one could eliminate the need for steering by placing them
48.
by calaphos 5y ago
I don't think the goal of this is to make games look better. Especially the GTAV dataset is often used as a synthetic dataset for research. The appeal is that you can extract normal/material and other semantic information from th
49.
by calaphos 5y ago
High mandated standards on Fire/Noise Protection, Insulation, accessibility on new buildings make it really hard to build "cheap" rental apartments. With the mandated standards in place there is little to no cost difference b
50.
by calaphos 6y ago
The current ARMeilleure seems to emit x86 instructions directly and execute them, so never really using the intermediate representation of Jit compiler of the .Net runtime. However the previous cpu emulator apparently emitted .Net byte code
51.
by calaphos 6y ago
Given the enourmous costs of decommissioning nuclear power plants already I fail to see how a reactor containment that lasts 10-20 years at best improves the situation.
52.
by calaphos 6y ago
For ground based targeting radar at the destination at least. Not sure how relevant this is with satellite based radar or infrared detection systems.
53.
by calaphos 6y ago
It is absolutely possible and exactly how connections between the different grids are done, e.g. between the power grids of North America or between the European grid and Russia. HVDC of course has the disadvantage of extra conversion equip
54.
by calaphos 6y ago
Cymer seems to only do DUV light sources, the EUV stuff is developed by Trumpf and Zeis in Germany.
55.
by calaphos 6y ago
A better analogy for context switching would be stowing everything away you used for making cookies before starting the next task. What you are describing would work as an analogy for hyperthreading / smt though. Not all ressources ar
56.
by calaphos 6y ago
If you like some practical project I can highly recommend Day tracing in one weekend by Peter Shirley.
57.
by calaphos 6y ago
Apparently first threshold for cutting of hydro storage pumps below 49.85 Hz was undercut very briefly. Immediately afterwards the frequency reaches that threshold again, so I assume those measurements were working as planned. Below 49Hz la
58.
by calaphos 6y ago
> I’d be curious how the unified memory architecture shifts the cost dynamic for GPU acceleration. Correct me if I'm wrong, but is this actually different from regular integrated graphics that have been in intel and amd chips for de
59.
by calaphos 6y ago
You can still benefit from AVX for short workloads, the latency of them is no more than other instructions. Running things on some accelerator (gpu, etc.) usually involves writing a specific kernel in a language subset, manually copying dat
60.
by calaphos 6y ago
Not relay the same. This predicts an additional depth channel using CNNs which you can then use to create some sense of 3D by translating the image elements differently based on depth when rotating the camera a limited amount. However you w

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