jpfr

10 ms·

61.
by jpfr 4y ago
The worst part wasn’t Linus rejecting the patch (rightly imho), but him dismissing RT as a small enthusiast’s project. There’s a huge industry depending on this. Like industrial control’s, etc. For context, here is the rebase of the RT patc
62.
by jpfr 4y ago
> The current Russian regime will never be able to repair relations with the west to the extent that will allow the Nordstream pipelines to resume operations. The new supply chain isn't yet ready to a sufficient level. The pain infl
63.
by jpfr 4y ago
That doesn't make any sense. If the Russians wanted to stop the gas supply, they could just stop supplying gas. And they had already stopped. Destroying the infrastructure doesn't give Russia an additional capability (degree of fr
64.
by jpfr 4y ago
Nice! A good portion of the HPC load runs 50 year old fortran code from the netlib [1]. That could be converted over. Also for the current generation to understand the technical achievements that already exist. The advantage of the old fort
65.
by jpfr 4y ago
There's a community doing "fpga golf". That is, reducing the number of LUT required to implement a CPU of a given ISA. A basic RV32 CPU is down to 500-700 LUT. https://github.com/YosysHQ/picorv32
66.
by jpfr 4y ago
As a startup founder you are automatically at the top of the company food-chain. Managers in the middle of the food-chain are all about power-struggle and social games they play to out-compete each other. That is especially the case for non
67.
by jpfr 4y ago
Tensor. The term is used to mean “multi-dimensional array” in the machine learning community. That is however not a tensor.
68.
by jpfr 4y ago
This looks very much inspired by Band-in-a-Box. A commercial software to generate backing music that my teacher recommended for training jazz improvisation. The performance was okay. I found it too sterile. It didn’t really swing … especial
69.
by jpfr 4y ago
Robotics is very much split into research users and industry. In industrial automation you buy a device (say a sensor or programmable logic controller) that comes with a few supported protocols. Typically a field-bus for realtime communicat
70.
by jpfr 4y ago
The best book for me was "Vector Calculus, Linear Algebra, and Differential Forms" by Hubbard and Hubbard. It is the only book (I know of) that brings you from absolute basics to an integrated development of the subjects from its
71.
by jpfr 4y ago
In addition to the average people, sucessful communities attract sociopaths that gradually take over "management roles" from the community founders. Sociopath is a strong word. See [1] for how this fits in this context. [1] https
72.
by jpfr 4y ago
No. With heat pumps electricity is way cheaper for heating. Only on nights with temperatures below -5 Celsius gas is cheaper. The problem is that most vendors are sold out.
73.
by jpfr 5y ago
> First, a bit of off-topic, but do you know we keep #open62541 open for you on Libera.Chat? :D Ahh, that's you! I came in to say hi on the channel whn you announced. But the channel was rather unresponsive. Will do that again with
74.
by jpfr 5y ago
There's quite a bit of OPC UA bashing across this project. So let me chime in to keep the "balance in the universe". OPC UA is a protocol to interact with an object-oriented information model. Basically CORBA done right to
75.
by jpfr 5y ago
Dude ... we basically have the same job. I take the 50% off so other people do the technical work. And without knowing specifics on what you do, if it is helping open source then I am grateful. In no way did I want to denigrate your work. A
76.
by jpfr 5y ago
> The bookkeeping that’s required when you spend government money. Oh yeah. Acquiring government funding and the reporting for it is a big part of my day job. Coding still happens ... after midnight. The funny thing is, I might even up a
77.
by jpfr 5y ago
Now we are in a decision making role vs support role discussion. “People skills” mostly are detecting the group consensus and running with it. Not the type of leader you need in tech. Geeks are known to fight hard for their independent opin
78.
by jpfr 5y ago
Fabrice Bellard Paul Graham Rasmus Lerdorf The world is full of ‘em. You don’t need one of those as the maintainer. They can also just hire somebody to do it for them. But you do need some number of successful geeks in advisory roles to kee
79.
by jpfr 5y ago
On the contrary. I am very much in favor of people that put in the effort to support the organization around open source. But it should be done by persons that also have insight in the technical work. Otherwise problems of judgment cannot b
80.
by jpfr 5y ago
People with nice haircuts that produce nice looking documents and talk to the government for funding. If the money funds technology that is still great! But be very careful when a subculture becomes a platform for organizers who never did t
81.
by jpfr 5y ago
Funding basic infrastructure as open source is a great idea. And the only way to keep a market economy going. Otherwise the infrastructure is used increasingly to lock out small competitors. However, I see a distinct lack of “geeks” in this
82.
by jpfr 5y ago
After following the course, you should be able to grok the solver code in /src/system.cpp. That looks fairly standard. The interesting part (to me, as that is not my specialty) lies in the translation of the 3D constraints (includ
83.
by jpfr 5y ago
I teach a class on the subject: https://www.youtube.com/playlist?list=PLdkTDauaUnQpzuOCZyUUZ... Understanding optimization at this level and being able to formulate your own problems in one of the canonical forms gives you
84.
by jpfr 5y ago
In the context of gmp, people write architecture-specific assembly for the inner loop anyway. Besides that, you raise good points on sources of complexity. I’m waiting for the benchmarks once such developments have been incorporated. Everyt
85.
by jpfr 5y ago
The idea is to use the compressed instruction extension. Then two adjacent instructions can be handled like a single “fat” instruction with a special case implementation. That allows more flexibility for CPU designs to optimize transistor c
86.
by jpfr 5y ago
Notice that the TeX you have installed locally is many conversion steps removed from the WEB source. Pascal code is extracted from the WEB. Then the Pascal is translated into C. Afterwards, years of development have accumulated on that C so
87.
by jpfr 5y ago
The text seems to imply that people on the "technical track" (only programming) are doing so because of some flaw in their personality. That is absolutely not the case! This is not a good way to launch "hermit programmer&quot
88.
by jpfr 5y ago
Cannot confirm. Saw it a few days ago (in France) and every major scene was straight from the book. The movie is good. Somebody not „in the know“ might read the book after seeing the film and not even know which came first. The movie spans
89.
by jpfr 5y ago
The bit manipulation extension was released as a draft for a public review. See the thread here: https://groups.google.com/a/groups.riscv.org/g/isa-dev/c/YiK...
90.
by jpfr 5y ago
Uhm. That's not exactly a new result. See Theorem 2.7 (page 34) in [1] for the classical formulation. If the advantage is in the notation, please enlighten me. [1] Jazwinski, Andrew H. Stochastic Processes and Filtering Theory . Acade

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