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sech1
XMR network hashrate 60 : 2,001.841 MH/s
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sech1
last 60 blocks ^
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sech1
Did someone hack Azure again?
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selsta
so this azure hacking has been going on since april according to their blog post
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selsta
and they still don’t properly monitor it? lol
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sech1
what blog post?
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sech1
oh my... XMR network hashrate 60 : 2,115.315 MH/s
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selsta
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selsta
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sech1
on the other hand, there are only 10 unknown in the last 100 blocks and pools don't show any increased hashrate
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sech1
maybe just a strike of good luck?
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sech1
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tromp
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tromp
Monero PoW on Hacker News
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midipoet
sort of funny the people that discuss the algo, not taking into consideration the context it is deployed (though i suppose that happens a lot in life generally)
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sech1
the only meaningful comment there is from thesz but he's totally wrong in his estimates
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sech1
all the optimizations that he mentions fall within 2-3x possible efficiency speedup
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hyc
meh. once he said it was unnecessarily complicated, it was clear he doesn't know what he's talking about
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hyc
e.g.: using fixed point to emulate floating point is ridiculously slow
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hyc
but most of all, pointing to optimizations to a braindead simple algo (FFT) as proof that you can accelerate an ASIC with a codesgin tool is utterly missing the point
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hyc
just as an aside, when I worked at JPL, our hardware lab had a couple decades of experience building custom floating point array processors for FFTs
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hyc
in the course of the time I worked there (3 years) all of that got retired in favor of massively parallel supercomputers
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hyc
Intel i860 based, SPARC based, many varieties
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hyc
I worked on the i860 compiler and optimizers that made a lot of that possible...
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hyc
fundamentally it's a memory-hard problem, it's easy to pipeline the CPUs so they're 100% busy, aside from waiting for memory stalls
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hyc
restated - the actual computation isn't the slow part
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sech1
hyc we should start a counter how many times "RandomX is dead" is said
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sech1
like they have a counter for "Bitcoin is dead"
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binaryFate
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hyc
lol
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selsta
this guy now claims 10x would be possible
news.ycombinator.com/item?id=23530196
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selsta
sounds more realistic already compared to his 100x in the first comment
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hyc
still nonsense to compare any fixed algorithm to a randomly generated one
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hyc
FFT requires no dynamic scheduling at all
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tevador
except RandomX doesn't need "more shifters than the CPU", the instruction mix aready matches common CPUs
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tevador
wider issue: not possible because of isn dependencies, only OoO would work
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hyc
nor can you do ahead of time preprocessing
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hyc
in parallel, since every instance starts from a different nonce. the scheduling demands of each parallel thread will clash.
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tevador
IIRC the simulations showed that VLIW over 4-wide had little to no performance gain
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hyc
two of these guys claimed they eval'd for their work. sounds like their employers got a bad deal.
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tevador
I think one of the guys was from X41
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tevador
the other one, I'm not sure
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tevador
maybe TrailOfBits
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sech1
So he has a secret knowledge how to make CPUs 10 times faster?
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sech1
My CUDA code has VLIW interpreter. I don't remember exact numbers, but it achieves around 3 RandomX instructions in a single VLIW instruction
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sech1
Memory dependencies and branches make it hard to go wider
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hyc
considering we paid X41 & ToB to report any potential falws, and they didn't include these kinds of comments in their final reports, I'd say if that was true then someone over there really f#cked up
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sech1
Demand moneyback?
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hyc
i.e. withholding conclusions that we paid for
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hyc
but I'd want to know for certain that those are their employers
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asymptotically
this seems to be his "employer", or at least he checked in some PoW related code to one of their repos:
github.com/hexresearch
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sech1
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tevador
I think "q3k" is from X41
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sech1
Found "thesz" after some googling
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gingeropolous
would be great to ditch the term asic resistance and replace with asic equivalence
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selsta
yes q3k is listed in the X41 audit
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selsta
yikes lol
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sech1
q3k just repeated their VLIW "issue" from audit report, no?
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hyc
hm, could be
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hyc
I don't see q3k in the x41 report
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selsta
he wrote the hardware part
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selsta
Serge Bazanski
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hyc
ah I see
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hyc
in that case fine, already reported and dismissed