asciilifeform: the 'pro' item is iirc advertised as 'certified', whatever that means
asciilifeform: diana_coman: only from entomological pov. i.e. do they break the opensores one deliberately , to upsell to the payware? or both equally braindamaged.
asciilifeform: ( but i do not presently know, nor inclined to buy it to find out )
asciilifeform: one interesting twist, the machine actually has an ionization gauge below the bottom, under the crosshair. and control panel allows to specify exposure in terms of the gauge output, but in nonsensical 'AEC' arbitrary unit
asciilifeform: such 'quiet' tubes aint used in medicine, so very little to go on.
asciilifeform ~still~ frustratingly wedged with mircea_popescu's tube puzzle , turns out the 'S' constant for 35kV aint published anywhere, incl. the tube vendor ! and no info published re how to determine it from principles, seems like it gotta be measured by hand.
asciilifeform: ( and the various semaphorisms that it makes necessary )
asciilifeform: good % of the riotous complexity of the sadkernel, once you subtract deviceisms, is the slicer
asciilifeform: mircea_popescu: unix imho is pretty typical piece of tard 'sleight of hand', where offers illusion that 'you can have 9000 continuous threads'
asciilifeform: why the fuck machine even has an interrupt controller, if idjit programmers run slicer to continuously poll e.g. blocking i/o . it's ridiculous.
asciilifeform: and oughta have 1 thread per core, and the rest -- yield
asciilifeform: i strongly suspect that it's fundamentally braindamaged idea
asciilifeform: while on subj, asciilifeform aint even sure if the traditional slicing scheduler is Right Thing
asciilifeform: btw when we plant gnatism on bare irons, will have to implement a scheduler, and it is 'black art' of sorts ( how big to make the quantum ? how to apportion slices to cores ? etc )
asciilifeform does not currently know, when introduced
asciilifeform: near as i can tell, it's a vestige from days of running on os with no scheduler (dos etc)
asciilifeform: mircea_popescu: i've had occasion to move the stack limit ( when tested ffa with massive fz widths, recall , all allocations are on stack ) but not otherwise
asciilifeform: mircea_popescu: i suspect that diana_coman is the 1st to actually measure, since 1990s (if indeed anyone bothered then)
asciilifeform: i dun recall whether i put this in the log, but asciilifeform found that if proggy does not use tasks, the 2 variants appear to build identical binary
asciilifeform: ^ pictured is 'pi', which is item similar to rk, but rejected by asciilifeform on acct of multi-MB blobism and massive unkillable (afaik) fritz chip core
asciilifeform: really oughta have a backplane connector, also ( the actual rk, takes up good 70-80% of enclosure space with cabling and legs )
asciilifeform: ( asciilifeform would luvv a rk-like item baked by sane folx, could easily be half the size or smaller, i.e. w/out the useless ports, and perhaps with e.g. sata instead )
asciilifeform: ( theoretically can do 70kV, per the sticker, but power supply deliberately capped by vendor, so as to get 100% absorption by the cabinet shields and sell as 'contained' or whatever oshaism it was called )
asciilifeform: the tube in asciilifeform's instrument maxes out at 35kV @ 0.3mA .
asciilifeform: mircea_popescu: they're commercially available , for cost of ~bmw , but i dun want one here lol
asciilifeform: i want lower/upper bound at least, or how the fuq to even know if could flip bit.
asciilifeform: mircea_popescu: i dun have a 10MeV source ( do you ?? ) . tho i suppose one could float the thing on balloon and hope to get lucky with cosmic ray..
asciilifeform went to compute mircea_popescu's q, 'just how much did it eat', apparently it's a bitch : absorption constant varies by chip, and in heavy industry folx mostly gave up , they stick dosimetric film underneath the board. i'ma get an upper bound tho, it's important q when we do the bitflip thing.
asciilifeform: for all i know, he was even right.. at petavolt or sumsuch. but , hate to disappoint, not at kV or even mV.
asciilifeform: ( funnily enuff, old man edison thought otherwise, was convinced that one could 'alchemize' with xray 'if you just crank it up enuff' ! )
asciilifeform: mircea_popescu: on my planet, if you want remanence, you gotta bombard with neutrons, not photons...
asciilifeform thought 'oughta transparent..' and closed hole in the sample shelf with paper.
asciilifeform: apparently has cruft in it, opaque at 20-35 !!
asciilifeform: last lulzbit before asciilifeform to bed : the fibrous crud in the photo ? is 1 sheet of printer paper !
asciilifeform: aha, is what the dentists do. i'ma gild that lily when it turns out to need gilding tho, so far can already clearly distinguish 2 layers of pcb.
asciilifeform too lazy atm to compute approx dose from this, in civilized units
asciilifeform: has eaten 30m or so, at various energies, largely towards 35k end
asciilifeform thus far can add only that the victim fg still worx..
asciilifeform: normally the killing dose for $chip is determined empirically.
asciilifeform: ( typically this involves 150kv+ xray, which goes straight through the film w/out exposing it, and film is then exposed by electrons emitted from ~underneath~ )
asciilifeform: the ~real~ gold would be if could emissograph it. like those rembrandts. but i dun think my current gear is up to it.
asciilifeform: y'know, cotton wad, with diamond paste
asciilifeform: really oughta ~lap~'em off, rather than conventional end mill
