eigenform

11 ms·

91.
by eigenform 2y ago
I thought so too - it seems like this is more about "who is being preempted by who" (although maybe noisy neighbor in the sense of "hogging up CPU time" does often imply "polluting hardware resources" to some d
92.
by eigenform 2y ago
Reminds me that we're definitely overdue for replacing Verilog with something more deserving of the title "universal IR for EDA/hardware design tools" Can't help but feel like there's some kind of Conway's
93.
Enabling DCI.DbC on a Jasper Lake NUC(reflexive.space)
1 points by eigenform 2y ago|0 comments
94.
by eigenform 2y ago
Kind of unsettling because there isn't obvious coupling between Hyuga-nada quakes and the Nankai megathrust in the historical record. See the leftmost column: https://www.data.jma.go.jp/svd/eqev/data/nteq
95.
by eigenform 2y ago
Presumably in that kind of machine, a "register" explicitly means "the link between one execution unit and another" and an "instruction" configures how a specific unit is linked to others. There are no "na
96.
by eigenform 2y ago
Most branches are biased one way or the other. "Fetching down both paths" means not exploiting any information you might have gathered about a branch being biased - I think that would be equivalent to randomly predicting the branc
97.
by eigenform 2y ago
by "microcode" i assume they meant "pcode" for the PCU? (but they decided not to make that distinction here for whatever reason?)
98.
by eigenform 2y ago
The authors' hypothesis about the STLF case: > Considering the affected core (i.e., Cortex-A715) dispatches 5 instructions in a cycle [ 55], it is likely that the CPU cannot detect the dependency if the store and load instructions a
99.
by eigenform 2y ago
oop, i guess i confused g4 and g5
100.
by eigenform 2y ago
SWPC says we haven't had a G4 storm since 2003 :o
101.
Robert Dennard has passed away(lohud.com)
1 points by eigenform 2y ago|1 comments
102.
Cathinone and Psilocybin in Cicada Pathogens (2019)(sciencedirect.com)
13 points by eigenform 2y ago|0 comments
103.
Harold Tobin – Investigating Sources of the Next Cascadia Earthquake [video](youtube.com)
2 points by eigenform 3y ago|0 comments
104.
by eigenform 3y ago
I know you're intentionally spinning this as a bad thing, but it's really not. Instead of worrying about simple and very common classes of bugs that can be solved statically with the help of the compiler, you are free to worry abo
105.
by eigenform 3y ago
See "Speculative Lock Elision" from MICRO34 (in 2001!): https://pages.cs.wisc.edu/~rajwar/papers/micro01.pdf
106.
by eigenform 3y ago
I tried to characterize this on Zen 2 a little while ago[^1], although I don't think that implementation has anything to do with unused physical registers: it ultimately relies on the idea that the store queue (48 entries on Zen 2) is
107.
by eigenform 3y ago
I'm not sure "bring back" is the right way to put it: it's been haunting us this whole time. Getting rid of SMT gives you guarantees that certain resources are separated between software threads. That probably makes it e
108.
by eigenform 3y ago
Probably makes verification easier because you don't have to worry about the case of "sharing resources between hardware threads" - instead you can focus on worrying about the only-slightly-less-complicated "sharing reso
109.
Upward Earthquake Swarm Migration in the Northeastern Noto Peninsula, Japan(doi.org)
2 points by eigenform 3y ago|0 comments
110.
by eigenform 3y ago
yeah, it maybe makes more sense in the context of embedded machines: where your userspace is small enough, and where you already expect that most of your binaries arent going to change underneath your feet under normal circumstances
111.
by eigenform 3y ago
would be lovely if ${cpu_vendor} would document exactly how FSRM/ERMS/etc are implemented and what the expected behavior is
112.
by eigenform 3y ago
I wonder which MCEs are being taken when this is triggered?
113.
by eigenform 3y ago
I havent really listened to any of their material after Systematic Chaos... but I'm glad they're still touring and making new tunes. You love to see it.
114.
by eigenform 3y ago
Hoping this doesn't impact forward progress on Chisel and CIRCT; afaik there are lots of folks at SiFive working on tools in this space too
115.
From Versailles to Cybernetics (1966) [pdf](jlombardi.net)
3 points by eigenform 3y ago|0 comments
116.
High probability of successive occurrence of Nankai megathrust earthquakes(nature.com)
1 points by eigenform 3y ago|0 comments
117.
by eigenform 3y ago
Even before that, this is ultimately about that fact that an ISA for a general-purpose computer can be seen as a way to abstract away parallelism. Even in your favorite assembly language, the effects are largely supposed to happen one after
118.
Microarchonomicon: Return Instructions(reflexive.space)
1 points by eigenform 3y ago|0 comments
119.
by eigenform 3y ago
Nick Zentner has a lot more content on YouTube too (and it's all very lovely!), see https://www.youtube.com/@GeologyNick
120.
by eigenform 3y ago
Oh, I didn't see that `cc1` is in the initrd image! Thanks! Seems like there's already a potential answer to this on the LKML - looks like it has something to do with BTB state being shared between threads? https://lore

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