From: cr88192@gmail.com
On 1/4/2026 4:30 PM, MitchAlsup wrote:
>
> BGB posted:
>
>> On 1/4/2026 6:07 AM, Terje Mathisen wrote:
> -----merciful snip-----------
>
>> Can fill in patterns sorta like:
>> v0=*(u64 *)cs;
>> switch(dist)
>> {
>> case 1:
>> v0=v0&0xFF;
>> v0|=v0<<8;
>> v0|=v0<<16;
>> v0|=v0<<32;
>
> That was 1 instruction in my Samsung GPU ISA
>
> SWIZ V1,V0,#[0,8,16,24]
>
> The immediate was broken into 4-bit fields (represented above with
> 8-bit fields) and the immediate was used as 8× 4-bit Mux selectors
> from the other operand. {Not using Samsung ISA names or syntax}.
>
> When I looked deeply into the situation, it was easier in HW to do::
>
> for( i = 0; i < 8; i++ )
> out[field[i]] = in[i]
>
> than::
> for( i = 0; i < 8; i++ )
> out[i] = in[field[i]]
>
> For some reason we called this swizzle not permute !?!
Dunno.
I had something similar for 16-bit elements, but it only has an
immediate form, and I called it "shuffle".
For LZ compression, might make sense to have a 3R 8-element byte-shuffle
though. Or maybe shuffle across register pairs (sort of like the SHUF
that existed in SSE).
Still mostly works, LZ4 decompression is still faster than IO to an
SDcard (still typically 12.5 MHz SPI or similar; or 1.56 MB/s).
> -------------------
>> Otherwise, generally feeling kinda lonely at the moment.
>> Working on stuff doesn't entirely compensate for general feelings of
>> pointlessness.
>
> Seriously; get help.
>
As far as I understand it, this sort of feeling is pretty much standard
though.
Though, just like the usual idea is that a person can work on stuff and
not have things feel pointless.
Then again, I suspect usual idea is that people would have some level of
IRL social life, or a dating life / significant other, etc. My case, not
so much...
Granted, git traffic has gotten a bit sparse. Typically don't get more
than a handful of cloners per week at this point (there was a time a few
years ago when I was seeing somewhat higher git clone traffic).
>> It is this or working on sci-fi stories of mine, which I had ended up
>> partly going and using AI to give commentary partly as I seemingly can't
>> get any actual humans to comment on my fiction.
>
> You are not the first purported author in this position
>
I previously wrote and published a few E-Book stories, but no one cared,
so no sales.
I tried giving links in various times and places, but generally no one
offers much actual feedback.
Getting Grok to write review story and write commentary at least works
it seems. Or, can give it text and ask questions about it, and use this
to gauge whether it is sufficiently obvious (never-mind when Grok itself
screws up in obvious ways; almost like a human that it is overly
confident that they are correct, even when they are obviously wrong).
Usually better than the AI feature in Google though.
Like, Grok has seemingly crossed into "smart enough to be useful", but
not really enough that I particularly inclined to use them for code. For
something simple, they work, but anything non-trivial and it still often
falls on its face.
But, what it lacks in general smartness, is sort of offset by going at
superhuman speeds (like, it writes stuff at around 500x faster than what
a human could write).
Though, seemingly (contrary to stereotypes), interacting with it still
doesn't "feel" all that much like interacting with a person. Like, it is
still feels like interacting with a machine even despite otherwise
generating human-like text.
>> Apparently, I guess as far as the AI was concerned on one of the stories
>> I threw at it (one about a Moon AI):
>> General ideas/theme were compared to "Asimov's Foundation Series";
>
> You do know that there are only 39 plots in all of literature ?!?
>
Possibly.
I guess "AI concerned with the long-term survival of Earth-based life,
so takes measures to preserve its existence past the eventual demise of
the solar system; proceeds to lead towards long distance interstellar
colonization efforts." had some amount of overlap with Asimov's writings...
Then again, borrowed some ideas from things like the Mega-Man games and
Neuromancer and similar which apparently also borrowed things from Asimov.
I had not imagined the possible emergence of any sort of galactic empire
though, where basically the formation of any sort of interstellar power
structure is mostly precluded by speed-of-light limits.
Like, as-is, would take longer than the current age of human
civilization for a single message to make it across the galaxy.
And, within this setting, I am assuming a non-existence of FTL.
I am assuming people using a lot of nuclear-powered plasma engines
though for interplanetary trips.
In story, Moon AI develops fusion-powered spacecraft (with a hybrid of a
fusion reactor and particle accelerator as an engine). But, say, normal
humans don't have these.
Could have gone for nuclear-thermal rockets or similar (as an
intermediate option) but I didn't. Likely less practical for "planet
hopping" than plasma engines. Nor likely to be viable for relativistic
travel; would have high thrust, but to get to relativistic speeds one
needs exhaust traveling at ~ 0.99c or similar (so, less "very hot
hydrogen" and more "focused beam of nearly light-speed protons"; not
many protons, but one can get thrust trying to push them up near light
speed...).
Not seen many sci-fi stories going the "use a particle accelerator as an
engine" route though...
Well, and say, for people on Mars, no real-time internet traffic to
Earth (more just bidirectional email-like communication).
...
Meanwhile, Grok had doubts that an advanced AI could rewrite organic
life enough to use 8 base pairs and eat rocks. I would think this would
be one of the less implausible things I have seen in a lot of Sci-Fi.
Well, and disagreements over which sorts of gases would be easier to
obtain on Mars (and use for "air" in a colony):
My thinking: The air is heavily adulterated with SF6 and CF4, as N2 is a
lot more sparse. Most of what N2 it had flew off into space, and there
is little N2 in the rocks due to most nitrogen containing molecules
being a result of organic processes, which are lacking on Mars. Wheres,
say, SF6 and CF4 and similar can be synthesized from Martian regolith
(which is comparably rich Sulfur and Fluorides and similar).
Then Grok disagrees, arguing that SF6 and CF4 would require chemical
synthesis, vs mechanical extraction of N2 and Ar via an air compressor.
[continued in next message]
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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