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<
gchristensen>
anyone want to debug a zfs / zed + udev problem with me? :)
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<
red[evilred]>
So, at the riscv summit a company said that they had a 1000+ core IC ready to roll
<
red[evilred]>
add a decent amount of memory and I'd like to see how that would operate as a hydra box
<
samueldr>
I'm not the best one to know, but I would think it's not going to do great
<
samueldr>
even with fast storage
<
samueldr>
because it's just waaaaay many
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<
red[evilred]>
I have a thing for multiple cores
<
red[evilred]>
I've yet to meet a machine with more cores than I've been able to saturate
<
samueldr>
the issue here is about disparate tasks
<
samueldr>
unless you leave all 1000+ cores to only one build
<
samueldr>
if you split it, let's say, 50 ways, 50 different builds, doing disk access on different things is going to be a drag
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<
cransom>
i'm sure you can find some ibm mainframe people who would still scoff at the hydra load.
<
hexa->
samueldr: latest eypc has 124 PCIe 4.0 lanes exposed, so you could certainly partition 20 NVME disks with it
<
domenkozar[m]>
yeah but at that point you need a really smart scheduler
<
hexa->
one step at a time :p
<
domenkozar[m]>
probably you could run some kind of hypervisor and then Nix inside it
<
gchristensen>
imo we should find a way to use Amazon Batch / Apache Airflow / etc. as a schehduler
<
gchristensen>
and upload all the jobs, have some other thing do all the building and nar'ing
<
gchristensen>
and a machine or a collection of machines can do the signing -- without a central hub /spoke
<
domenkozar[m]>
eh if you ever want to support IFD
<
domenkozar[m]>
it's all extremely coupled
<
domenkozar[m]>
you have to do a lot of closure traversals
<
gchristensen>
I dunno it might be a teensy bit slower for small thinsg but I think substantially faster for big things
<
domenkozar[m]>
sadly the algorithm in Nix is not "just traverse the tree"
<
domenkozar[m]>
and probably with CA derivations it will get worse
<
domenkozar[m]>
and then you have to handle failures
<
domenkozar[m]>
you don't want to rebuild them again and again
<
gchristensen>
true
<
domenkozar[m]>
etc
<
gchristensen>
womp womp
<
domenkozar[m]>
it's all easy on the surface :D
<
gchristensen>
something something contact with the enemy
<
domenkozar[m]>
heh
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<
domenkozar[m]>
I never remember makeWrapper attribute, always try to reverse name it from wrapProgram
<
gchristensen>
same
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<
domenkozar[m]>
which goes like:
<
domenkozar[m]>
git grep wrapProgram
<
domenkozar[m]>
pick one file
<
domenkozar[m]>
look at buildInputs
* domenkozar[m]
needs to use manuals more often
<
gchristensen>
that is what I do too
<
gchristensen>
samueldr: your fancy stage-1 has made me wish after a fast stage-1 for the rest of us
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<
aminechikhaoui>
anyone knows offhand if hydra would support git lfs inputs
<
gchristensen>
I think it would if you installed the lfs plugin for its git
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<
cransom>
it's still a pile of hard drives you could go lift without a likely hernia at least.
<
eyJhb>
I always enjoy seeing the cache gchristensen , such nice things in there
<
cransom>
happen to have a timestamp of the oldest nar in there?
<
gchristensen>
2013 probably, when the bucket was created
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<
red[evilred]>
hmm, I almost have enough storage at the house to mirror that cache
<
gchristensen>
I think it'd be nice to have an archive somewhere
<
red[evilred]>
I think my ISP would have a hissyfit if I started syncing :-)
<
red[evilred]>
is that hydra's buildcache?
<
gchristensen>
cache.nixos.org
<
{^_^}>
#106574 (by grahamc, 9 minutes ago, open): nixos/amazonImageZfs: init
<
gchristensen>
typical things like smaller commits and useful commit messages, of course, to be done
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