Viewing profile — hackthesystem
hackthesystem
HN member- Joined
- Mon, Jan 31, 2022, 10:58 PM UTC
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About hackthesystem
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Comment #31077727
It's possible to make a compiler backdoor that is "updatable" and therefore a lot less brittle. And yes this does make the backdoor easier to detect since it's now communicating ov…
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Comment #31077689
Who said it has to "generalize"? No virus generalizes to hack every program. That doesn't mean viruses aren't dangerous. Also OSS makes up most of the modern stack, so access to so…
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Comment #30186066
Thanks for mentioning, I just updated my website and Github to use the new WAT functions.
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Comment #30185319
I actually tried comparing 128-bit SIMD to the 64-bit performance and the difference was 2x. I only published the results for the 4x comparison, but it should be pretty easy to rep…
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Comment #30183923
Thanks! Good points, I think in general the fixed-width "packed" SIMD ISAs have the downsides that you mentioned. But it seems that WebAssembly doesn't have length-agnostic SIMD in…
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Comment #30170667
Great questions! I'm not a database expert either but I can try answering these: 1) I think databases like to manage pages directly because the db can make more optimizations than …
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Comment #30165867
Good point. I just removed my name from the license, but I couldn't find the original author(s) so the copyright name list is just empty now
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Comment #30165304
There is also BusTub from CMU which I stumbled upon earlier today: https://github.com/cmu-db/bustub
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Comment #30165201
Yeah, I think its a shame that most teachers don't give assignments like this that tie the big picture together with the low-level details. After students complete a big assignment…
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Comment #30164862
When I was implementing SimpleDB in 2019, I believe CMU's course didn't have resources and lab assignments that were publicly available. Now CMU has published a full video lecture …
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Comment #30159425
Thanks! I'd also like to see a MVCC implementation because that would shed some light on how mysql works. I'll add MVCC to the future improvements section
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Comment #30159352
Thanks, really glad to hear that!
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Comment #30159345
Ah yes, by the time I realized this it was too late to rename unfortunately. And very neat how Amazon SimpleDB is written in Erlang!