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It's kinda difficult to explain, but it's fascinating to watch someone who really knows what they are doing, doing what they do best. It's the "unconscious competence" that they demonstrate, I suspect. It's what taught me to change motorcycle tyres, fix their engines, rewire the electrics, etc. ...
You never lose anything by watching a master at work, and you might learn something. 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: It's what taught me to change motorcycle tyres, fix their engines, rewire the electrics, etc. ...
Very true. Some very useful and practical skills to learn.
Maybe I should learn a new skill, like "Robbing A Bank"
But where could I use that. Hmmm
A Fine is a Tax for doing something wrong
A Tax is a Fine for doing something good.
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The first problem there is finding a master to watch ...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: but it's fascinating to watch someone who really knows what they are doing
I have the same fascination watching a master potter at work, pisses the wife off no end as I am happy to stand a watch for hours if we go to a potter that allows onlookers.
Never underestimate the power of human stupidity -
RAH
I'm old. I know stuff - JSOP
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RossMW wrote: A Fine is a Tax for doing something wrong
A Tax is a Fine for doing something good.
throw new CircularReferenceException();
The difficult we do right away...
...the impossible takes slightly longer.
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It appeals to my sense of humour. 
Unfortunately it is also very true. Whatever I do I gotta pay...
A Fine is a Tax for doing something wrong
A Tax is a Fine for doing something good.
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Good, that may be a blessing in your golden years. 
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I may have a job for you, Mr. Green. Mr. Blue will be in touch.
/ravi
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So if your contracts dry up you can always make a living housebreaking. 
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Most thieves don't pick locks - they smash a window, or force a door. It's easier, quicker and requires less skill. Locks are there to deter the honest! 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Saw a channel on Youtube the other day - The Lockpicking lawyer - check it out
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Already have: The Lounge[^] - he is very good!
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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What kit did you buy Paul ?
We can’t stop here, this is bat country - Hunter S Thompson RIP
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That's a coincidence, I saw a video recently of a guy picking a lock ( can't remember where though ) and it too piqued my inquisitive nerdy head - I've ordered a cheap beginners set of tools from Amazon - new page on this site maybe ? Lockpickers Q & A 
We can’t stop here, this is bat country - Hunter S Thompson RIP
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LockProject? 
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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It's a marketing term, obviously.
But hiding behind that is a set of genuinely useful instructions, not exclusively for "deep learning" (whatever that is).
VPDPBUSD (base intrinsic: _mm_dpbusd_epi32), in the words of the official guide,
Multiply groups of 4 adjacent pairs of unsigned 8-bit integers in a with corresponding signed 8-bit integers in b, producing 4 intermediate signed 16-bit results. Sum these 4 results with the corresponding 32-bit integer in src, and store the packed 32-bit results in dst.
So it's like a slightly more elaborate version of the old PMADDUBSW (aka _mm_maddubs_epi16), summing groups of 4 instead of 2 and with an extra 32-bit addition at the end. There is also a version where the final sum is saturating. Since it sums together groups of 4, it has 32 bits to represent the sum of 4 products, and it is easy to avoid saturation. This is different from working with PMADDUBSW which sums together two adjacent 16-bit products with saturation, which in many cases limits the useful range of your scale factors.
It's also actually a fast instruction (CTRL+F for VNNI), at 2 operations per cycle. It's not inherently faster than VPMADDUBSW, but you get more range on your scale factors so the amount of useful work goes up a bit. The 512 bit version does not look super useful yet, possibly even harmful: it's twice as wide but can be done half as often so it does not increase the amount of work done per cycle, and since it is a 512bit instruction it may have funny side effects such as reducing clock speed and fusing ports 0 and 1, who knows, be careful.
Unfortunately there is still no VPMULLB or VPMULHUB or VPMULHB. Intel, AMD, please.
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Good to know that there are still people interested in Assembler, the last time I tried it must have been 30 years ago 
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You have got to be the most knowledgeable guy on this site!
I can't even imagine what such an instruction would be used for.
The difficult we do right away...
...the impossible takes slightly longer.
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Lots of image processing stuff: convolutions, 4-way cross-fade, color space conversion, bilinear interpolation..
It does not seem as great for parsing decimal numbers, because the 4th scale factor won't fit in an sbyte. If you shuffle first you can make something happen but is it worth it? Maybe..
It could be used to turn blocks of 4 8-bit masks into a 4-bit combination of packed flags by setting the second operand to _mm_setr_epi8(-1, -2, -4, -8, -1, -2, -4, -8, -1, -2, -4, -8, -1, -2, -4, -8) (this puts junk in the upper 24 bits of the dwords but just discard that), sort of like a PMOVMSKB but with a vector result, I predict some synergy with PSHUFB (which can use those 4-bit groups to pick arbitrary 8-bit values out of a 16-entry lookup table).
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I mean, I care about posix standards when I'm writing shell scripts.
But regular expressions? really?
*sigh*
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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How else would someone top 24x7 torture?
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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reality television? (either watching or participating, doesn't matter)
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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I hear that they're making Guantanamo prisoners do regular expression coding, and that's the REAL reason hillary and obama are panicking over the DoJ investigations.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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