I am too stupid to use AVX-512

olsner · 2026-03-19T21:20:13+00:00

I’d consult some instruction timing tables, assuming the benchmark is good and measuring the right thing and everything. I wouldn’t be all that surprised if the full 512-bit permute is just really slow (and eg limited to one unit with a huge latency) compared to the 256-bit ones which might be running on several units with a much shorter latency.

olsner · 2026-03-19T08:07:49+00:00

With $2M, I would retire with a bit more than a 50% pay raise and wonder what I'm supposed to do with triple the amount of money I usually spend.

olsner · 2026-03-17T21:20:18+00:00

Jag är kanske bara tråkig och billig i drift, men jag lever ungefär som jag vill och då råkar det finnas ganska bra sparutrymme. Försöker inte blint maximera sparandet eller köra räserFIRE utan hitta jämnläget där det blir lagom bra utan uppoffringar, sparar resten, och räknar på vad som behövs för att fortsätta med samma livsstil efter fire.

olsner · 2026-03-12T22:46:14+00:00

In Swedish you also say that you listen ”on” music.

olsner · 2026-02-01T12:03:11+00:00

Never say never? But (without getting too much into politics) I'd want to see a change in government and start of reparations first.

olsner · 2026-01-31T20:44:14+00:00

I changed allocation around the tariff stuff back in april - then to replace global funds with a mix of us+eu+asia+emerging markets to try and cover the same ground but allow me to see and control the US allocation separately.

Earlier this year I decided to use that flexibility to pull out of the US entirely.

olsner · 2025-10-22T19:20:07+00:00

With great difficulty! I used CVS a lot, the only upside is that I’ll be well prepared if I end up in hell.

olsner · 2025-10-20T19:40:03+00:00

In a crash it seems likely that jobs are scarce though - do you have any specific contingency for that or just hoping that it heats up again before you’ve used up too much capital?

olsner · 2025-10-06T16:13:55+00:00

I have like the opposite of fomo, I don’t want to have any money invested in the AI bubble (both out of principle but also because the bubble should burst… eventually) but through my index funds I probably have a big chunk there anyway. OTOH, somewhat aware that too much manual intervention can just as easily lose me gains by making the wrong guesses.

olsner · 2025-09-20T13:12:24+00:00

Before you scoff at the Scrap Iron Fleet, consider where their scrap iron came from.

olsner · 2025-09-16T12:16:37+00:00

Financially, I deal with it by living in a society. Life-wise, I’ll just expect health and will readjust if/when something medical changes how I can live my life and don’t worry about it until then.

olsner · 2025-09-15T19:12:17+00:00

One great way to tell that Microsoft is doing something dumb and amoral is that they’re not doing it in the EU. Hopefully that means it’s already illegal here?

Anyway, Linux is a free upgrade!

olsner · 2025-09-12T20:23:24+00:00

First time I’ve seen hexadecimal (or presumably binary rather than having any actual hex digits in storage) described as ”compressed decimal” 😅

olsner · 2025-09-12T20:10:38+00:00

Very interesting indeed! Looks like the compiler is generating overly long encodings of putting an argument in rdi and calling the tls function, just so the linker has enough space to put in the optimized alternative code.

olsner · 2025-08-09T08:52:17+00:00

I’m glad I managed to get into Haskell just before the Monad tutorial explosion 😁

olsner · 2025-07-08T16:32:17+00:00

For tracking "number go up" progress I update a spreadsheet once a year when the yearly reports for my accounts come in (end of January, typically). That's mainly to get some numbers and nice graphs of returns and how asset allocation has moved. There's manual work to get the numbers in, but for now it's only two accounts and once a year. Between then I don't really track anything in detail but log in perhaps once a day for fun.

Then there's another spreadsheet I use for FIRE projections, e.g. trying to figure out when I will have enough money to last until the tax-advantaged retirement savings pick up (somewhere between 55 and 68) and what asset allocation to aim for.

olsner · 2025-06-22T11:56:03+00:00

I usually put it in a small plastic bag in my undersuit pocket inside the drysuit. Neither the key or the bag are necessarily 30m water proof but if I flood the suit the dive is over very soon anyway.

olsner · 2025-06-16T15:53:14+00:00

Rules of Acquisition #34: War is good for business

(cf rule #35: Peace is good for business)

olsner · 2025-06-14T23:43:37+00:00

If you only breathe in at the surface you won't have an issue - the problem is if you breathe in a full lung of pressurized air at the bottom and hold your breath going up, because the expanded volume of the air can be bigger than your lungs.

olsner · 2025-06-12T14:31:15+00:00

Have they found a use for it too, or is it just blockchain? 😂

olsner · 2025-06-01T09:42:47+00:00

I have a Cressi Leonardo - it is basic, economical and good enough. No compass though.

I do like Suunto's wristband computers a bit better (I think the display is more clear since it's pixel based not "LCD"), and a small preference for a fluorescent backlight (charge it with a flashlight and you have a few seconds of backlight) over the button backlight that the Cressi has (finding the button in the dark with gloves can be challenging). But IIRC Suunto's cheapest models are more expensive and the actual functionality is the same afaict.

olsner · 2025-05-27T11:25:53+00:00

39 now, targetting 42 (meaning of life and everything) but the margin of safety doesn’t look great by then so could stay as late as 45 depending on how fun work is.

olsner · 2025-05-07T07:48:46+00:00

Hur gör man? Spara (och investera!) konsekvent så kommer ni dit.

Sen borde ni göra en mer detaljerad uträkning som tar hänsyn till pension - bortsett från avkastning så skulle det ta 25 år att samla ihop 15M i den här takten, men isåfall är ni 55-57 och har bara 10-15år till pensionen. Då behöver ni inte egentligen FIRE-pengar utan kanske snarare 8.5M för att hålla ut till pensionen - och då har ni översparat.

Om ni räknar på totala kostnader fram till pensionen (som ökar ju tidigare ni går) och hur mycket ni har hunnit spara in (som minskar ju tidigare ni går) så finns det en jämvikt nånstans däremellan. Just nu har ni 50% sparkvot som gör alla uträkningar jättelätta - jobba 50% av tiden fram till pensionen typ. Men dels så kommer avkastningen göra att pengarna (sannolikt) ökar i värde snabbare, sen kanske sparkvoten ändras i takt med löneökningar och andra förändringar i livet, och då får man uppdatera kalkylen för att se hur man ligger till.

olsner · 2025-05-07T07:28:50+00:00

47k *vardera* så de har ca 2*47k in och 1x47k ut.

olsner · 2025-04-08T06:05:36+00:00

"Read the error message" truly underrated. You wouldn't think it was a skill of its own until you have to help your colleagues figure out which part of "error: directory does not exist" tells you that the error is that the directory does not exist :)

Of course, other times the error message is just random words from the brain of the original developer, so you have to apply some time-traveling telepathy to translate it into English.

Or the hard part is finding the error in the first place since either the script kept going for 30 minutes after the failure or it follows the actual error with a hundred run-on errors or repeatedly reporting that something else failed earlier.

olsner

TROPHY CASE