Re: It was a DSP
There are more algorithms than FFT/FIR that are well optimised in the libraries.
Posts by Paul Crawford
5665 publicly visible posts • joined 15 Mar 2007
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Will anybody save Linux on Itanium? Absolutely not
Tuesday 21st November 2023 11:26 GMT 
Texas Instruments had a VLIW family of DSP processors around the late 1990s that I had the sad misfortune of working on. Again the promise was 1GIPS of performance from a 200MHz or so clock rate (which seems nothing now, but then was seriously impressive), but that was only possible on very specific code segments when the various internal units (integer cores, MACs, loop counters/index, etc) could all run code in parallel. Which was rare. What made it worse was the piss-poor compiler tools that hardly managed to optimise C-code for that sort of a situation, a life way too short to learn its assembly rules, and to cap it off a long instruction pipeline that was dropped, with a serious performance hit, any time there was an instruction branch (i.e. an if statement or break in a loop).
End result was a mediocre performance in reality, and a few years on it was beaten on performance by x86 style chips that had OOE and branch-prediction capabilities. Not to mention far better compilers for PCs, many of which were also free, and greater ease of debugging.
NASA's Psyche spacecraft beams back a 'Hello' from 10 million miles away
Saturday 18th November 2023 12:30 GMT
Re: Great work!
Also you might note that the article in El Reg, or indeed the press release, is not say what speeds were actually achieved. Just woolly words about being faster:
“DSOC was designed to demonstrate 10 to 100 times the data-return capacity of state-of-the-art radio systems used in space today”
What makes of radio systems? At what distances? FFS just tell us what speeds?
Saturday 18th November 2023 12:21 GMT
Re: Impressive.
You can deliberately diverge the beam to make pointing less critical, but that of course negates the link advantage of using light (wavelength in the um range) instead of radio (in the cm range) for any low rate missions.
And no, at that distance it is not "high rate" by near-Earth standards. For near-Earth use laser comms promises a lot higher data rate than radio as you can have many, many, GHz of modulation bandwidth that is simply not available in most of the usable radio spectrum, here the advantage is the sharp focus of the laser in delivering enough power where (hopefully) you are listening and not elsewhere.
Windows users can soon ditch Bing, Edge, other bundleware – but only in the EU
BOFH: Monitor mount moans end in Beancounter beatdown
Child psychiatrist jailed after making pornographic AI deep-fakes of kids
Late Qualcomm cofounder teleports $200M into SETI to bankroll hunt for alien life
Bad eIDAS: Europe ready to intercept, spy on your encrypted HTTPS connections
Wednesday 8th November 2023 12:51 GMT
I'm guessing if it came to it, most browser companies will produce an EU version that meets this law, and a World version that has trusted/vetted CA certificates. Perhaps just a configuration setting apart (assuming web browser designers grasp there is more than a google search box needed)?
No sir, not identifying any secret certificates. But sure, if you are outside the EU only use these ones that we trust...oh what is that Skippy? Those EU CA companies are being dropped world-wide due to a lack of trust? Oh dear, how sad, never mind!
Android VPNs to get audit badges in Google Play Store if they aren't comically crap
Sunday 5th November 2023 10:06 GMT
Re: There is no "safe" VPN
It comes down to who and what you are defending against. I often use a VPN just to make it that bit harder for advertisers and busybodies in local authority (not necessarily TLAs) to follow me, and also to have a relatively fixed IP address when travelling so I don't get pestered with 2FA and other annoyances to prove who I am every time.
We're getting that fry-day feeling... US Army gets hold of drone-cooking microwave rig
Sunday 5th November 2023 10:01 GMT
Re: Hmmmm..
Indeed you can design a drone to resist frying tonight, but then you are not getting the cheap off-the-shelf parts to build from and suddenly thay are $M+ a pop, not $1-10k a pop and that makes a massive difference to the tactics and options to supply. That alone makes this sort of defence valuable.
Cybercrooks amp up attacks via macro-enabled XLL files
Microsoft's 11-year itch: The uncelebrated anniversary of Windows 8
Tuesday 31st October 2023 19:55 GMT
I just don't really see the point getting my panties all in a wad over something that I stopped noticing in a week. That seems like a very unhealthy fixation if you ask me.
So you are happy to spend whatever time it takes to support employees, friends & family who do see problems introduced by pointless changes?
You are happy to re-write documented processes to keep up with the whims of some idiot who decided to break things for the sake of a "modern" look?
Clearly it's so easy, and all Microsoft had to do was just consult someone like you, so...
They could have kept the old options, just like XP allowed "classic look" to keep win2000 look and feel. Just how hard would that have been? After all if you tried doing anything with w8 and similar sooner or later you would find the jarring change to an old control panel menu, etc.
Intel dumps its silicon photonics bells and whistles into Jabil's lap
Boston Dynamics teaches robo-dog to recognise speech, respond using ChatGPT
Monday 30th October 2023 12:28 GMT
Re: "This illusion was enhanced by adding silly costumes to the gripper and googly eyes"
I should have ignored the siren's call to search for that, almost the first hit was "6 Best Robot Sex Dolls In 2023" suggesting not just that they existing in more than one guise, but this is not the first year they have run such a review.
Well, obvious really =>
Just one in ten UK orgs have significant AI investment plan
Monday 30th October 2023 16:21 GMT
Re: Plan for ... what?
I suppose some companies could be figuring out how to use AI to provide (even more) atrocious customer service very cheaply. AI may well be able to do that .... in a few years ... probably.
Most likely.
Sadly even when you get a human after some utterly useless voice-operated call screening (that only works for a small set of voices), you often find they are also ones who fail the Turing test.
Boffins find AI stumbles when quizzed on the tough stuff
Sunday 29th October 2023 12:50 GMT
Re: GPT-4 model managed to score 700 out of 800 on the SAT maths exam
That is a truer test, like getting it to write, debug and test a program instead of copy/paste stack-exchange, etc.
But the reality is most humans 'train' on past paper examples, etc, and most academic institutes keep the same approach as making the exam harder more realistic in terms of problem-solving would cause an unacceptable drop in pass rates. And skulls mean money, not brains...
Microsoft seeks EU Digital Market Acts exemption for underdog apps like Edge
On-by-default video calls come to X, disable to retain your sanity
Boffins say their thin film solar cells make space farms viable
It is 20 years since the last commercial flight of Concorde
Tuesday 24th October 2023 18:11 GMT 
I was fortunate to fly once as I bought a ticket when they announced its withdrawal as I realised it was never going to happen again. It was a marvel of engineering and I feel that BA was rather spiteful in ensuring no flyable craft were left, at the very least it could have flown at air shows like Spitfires, etc, even if not flying commercially due to the withdrawal of manufacturer support.
Comfort-wise it was fine, and while not as luxurious as first/business class flights today, it was only 3 and bit hours, not the gruelling 8+ hours if cattle class most of us endure if we need to get to the states.
A toast to the numerous engineers and scientists that made it work, really it was the UK/France equivalent of the Apollo program =>
GNOME Foundation's new executive director sparks witch hunt
Shucks Chuck, how many employees pay = one Cisco CEO?
Progress towards 'Gigabit Europe' is slow, with UK also lagging
Tuesday 24th October 2023 08:40 GMT
Wi-Fi in practice* is never going to be as fast as Gigabit ethernet. Also in my area of UK you get FTTP with a choice of speed/costs so in my case I went with "up to" 300Mbit rather than "up to" 900Mbit as more than enough and half the cost. So far I see close to max speeds most of the time, suggesting fairly low uptake of the contended segments.
[*] As in through walls and with every other bugger in your (and neighbouring) block of flats also running Wi-Fi.
There's no Huawei Chinese chipmakers can fill Nvidia's shoes... anytime soon
Tuesday 24th October 2023 07:01 GMT
Re: Taiwan occupation?
Hopefully China will not let their political pride cause them to act irrationally and focus on internal or diplomatic remedies rather than military options.
I wholeheartedly agree, diplomacy is a far better option. Sadly when I look around the world, from east to west, north to south, I see stupid flowing at levels I never imagined possible 10 years ago.
The issue though is the CCP under Xi has moved to be more authoritarian and unwilling to consider other opinions. Had the CCP kept to an open democratic path then it would have been easier to see Taiwan and China willingly reunite under mutually beneficial terms, however, the example of how Hong Kong's freedoms were crushed for any criticism of central policy makes that look unlikely any time soon.
Tuesday 24th October 2023 06:52 GMT
Re: Taiwan occupation?
Is it really what Taiwanese want : being sacrificed for a corrupt senile man's ego ?
Are we talking Xi or Biden here?
Whatever, it really comes down to economic-MAD: that the invader will suffer more than they might gain, no matter how quickly or powerfully they perform the first strike.
Sunday 22nd October 2023 15:18 GMT
Re: Taiwan occupation?
Invading Taiwan is very unlikely to result in a working advanced foundry.
There are no economic gains for China invading when the consequences are thought-through, it would only be done due to political reasons and the worry is as Xi gets older he wants to be remembered for something great and forced reunification might fit that bill. However, the progress (or lack of) that Russia has demonstrated in taking Ukraine might make the generals think carefully. Yes, I am sure China has the military might to "win" but at what cost?
NASA just patched Voyager 2's software but spared Voyager 1 the risky rewrite
Monday 23rd October 2023 06:40 GMT
Wow, the skill needed to perform remote updates on these two craft beats anything else mankind has done so far. Good to see they are still returning valuable science!
Folks, a beer or three for everyone involved in the program, from those who designed them in the 70s to those (maybe some the same?) still supporting them half a century later =>
After six days and thousands of pwned users, Cisco poised to patch IOS XE flaw
Monday 23rd October 2023 06:35 GMT
Forgive me for asking, but do CISCO devices have the internet-facing (WAN side) web interface on by default. or are people deliberately configuring it that way for some sort of remote access "convenience"?
I would assume you should always VPN in if external, and then admin from the internal (LAN side), so at least two access tokens/passwords needed.
Corner cutting of nuclear proportions as duo admit to falsifying safety tests 29 times
Saturday 21st October 2023 18:21 GMT
Re: Don't worry folks...
And you and I know that your question is both rhetorical and disingenuous. The whole point is: YOUR ARGUMENT IS INVALID.
You claim to have extensive nuclear knowledge and yet you have failed to quantify any of the risks. As such it is simply hand waving and saying "I'm scared".
Nobody builds a reactor for the fun of it, it serves to generate power and for that there is a clear benefit, and some danger. So how do these compare to other sources of power? To other manufacturing industries? To means of transport?
Saturday 21st October 2023 14:37 GMT
Re: Don't worry folks...
Your resorting to whataboutism shows you can't counter the timescale argument.
What are you asking for? Projections for next centuries? LOL.
Do you have any scientific background? Do you know how hard it is to make predictions for the next decades.
Yes, I do have a science and engineering background but it is you who is raising the deaths over centuries question, so I am asking what that number is expected to be. So far you have not answered.
The reason it matters is that nuclear, like all other power sources, have a ratio of power generated to environmental & health damage. None are immune and I presume it was you who recently down-voted the chart showing the statistics for that. Sure you don't like nuclear, but then have you an alternative that overall is safer and meets base demand?
But my humble suggestion is that you study nuclear engineering and the safety aspects.
And you have? Posting as AC and not providing any evidence of facts to back up the argument is not a good start. The contamination around Chernobyl that you cite is certainly bad, but mankind has polluted and damaged a lot of the planet, and killed many people in the process. I have stats to back up the claim that nuclear is one of the lowest risks per TWh when properly managed (and Chernobyl is the poster child for how not to manage, but is included in those stats) but so far you have made a lot of hand-waving about effects without figures.
Saturday 21st October 2023 14:05 GMT
Re: Don't worry folks...
And your tally so far is?
And the scientific projection (citation required) is?
And how does the radioactivity from those accidents compare to the radioactivity pumped out by coal fired stations all the time? https://www.scientificamerican.com/article/coal-ash-is-more-radioactive-than-nuclear-waste/
Not to mention those still impacted by chemical disasters, such as Bhopal in 1984?
More X subscription tiers could spell doom for free access as biz bleeds cash
The problem with Jon Stewart is that Apple appears to have cancelled his show
First Brexit, now X-it: Musk 'considering' pulling platform from EU over probe
Thursday 19th October 2023 12:51 GMT
I used to follow a few folks on Twitter but after the wall went up meaning you have the sign-up and sign-in simply to read posts i have not been back. So for me it is not going to be a disadvantage if Xitter is lost from UK/EU due to safety concerns, and it will make for an interesting exercise in business management for future students to ponder.
Popcorn time?
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Biting the hand that feeds IT
