karolherbst

karolherbst , vor einem Tag

@asael @matt @Tamasg One major issue I read about often is, that people ask for certain moderation tools, or other features and then others "explain-bro" them on why it's a bad idea.

Though from a more technical pov, there are a lot of tech folks who say "decentralized is the best" and then entirely ignore how that's just making moderation a painful process (which is true, but often denied).

Another concern is, that it's too easy to create an account on the wrong server full of shitty people.

karolherbst , vor einem Tag

@matt @asael @Tamasg this thread also got boosted into my timeline today, and I think it's a good read on that matter: https://hachyderm.io/@mekkaokereke/110272951321280411

karolherbst OP , vor 7 Tagen

(though I don't know if it's indeed a use-after-free, can be any other kind of memory issue)

karolherbst , vor 7 Tagen

@mizah @cadey @ShadowJonathan apparently rebooting quite a few times is a working workaround here 🙃

"We've received feedback from customers that several reboots (as many as 15 have been reported) may be required, but overall feedback is that reboots are an effective troubleshooting step at this stage."

https://azure.status.microsoft/en-gb/status

karolherbst , vor 7 Tagen

@mizah @cadey @ShadowJonathan nah, if you are luck it simply succeeds to auto-update before crashing as they've pushed a fix for their broken update

karolherbst , vor 7 Tagen

@mizah @cadey @ShadowJonathan maybe? I have no idea if their update on boot is made to be that reliable or if it just updates when an update was already downloaded.

Maybe it downloads in chunks and after enough boots you got the full update ready on boot?

karolherbst OP , vor 9 Tagen

@matt some kind of development board mainly.

karolherbst OP , vor 9 Tagen

@serebit 🥵

karolherbst , vor 9 Tagen

@ShadowJonathan the fun part is, if it crashes it's always described like a weather report, nobody's at fault, it's just "harsh market conditions", entirely natural phenomenon. Nobody could have known. It just appears out of nowhere every time.

karolherbst OP , vor 10 Tagen

@TheStroyer I'm really not in the mood for those kind of arguments.

Either respond in good faith or not at all.

karolherbst OP , vor 10 Tagen

@TheStroyer you are free to ask questions if you didn't fully understand the meaning behind my post.

But anyway, user installing software is already opt-in by definition, "hidden features" e.g. ads or analytics shouldn't be opt-out, which they often are.

karolherbst OP , vor 14 Tagen

after I'm done with this rework, I'll need a break...

" 5 files changed, 777 insertions(+), 617 deletions(-)"

karolherbst OP , vor 14 Tagen

so, it ended up being " 5 files changed, 815 insertions(+), 626 deletions(-)"

and here it is: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30152

the tldr is, that OpenCL requires you to handle global id offsets and other internal stuff, which 99.99% of all invocations don't need, so this strips a bit of ALU operations in those good cases.

and with that. happy weekend or something 🙃

karolherbst OP , vor 14 Tagen

the code changes are probably terrible, because I didn't really know where I'd land. But I also don't think I can trim down the complexity here without other changes I'm not in the mood of doing atm 🙃

karolherbst OP , vor 14 Tagen

@VegaHarmonia also an idea. But the issue I was seeing was, that apparently an addition of two 8 bit values gives us casts to 32 and to do the addition with 32 bits instead of 8 🙃

karolherbst OP , vor 14 Tagen

@sanity @VegaHarmonia I'm not compiling against a CPU target

karolherbst OP , vor 14 Tagen

@oblomov @VegaHarmonia all opts are disabled, so my expectation is, that LLVM just leaves the original code as it is.

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia sure, I still want LLVM to not do such things if I use -O0

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia I'm compiling towards SPIR-V, so any additional instructions are just a waste of space and time in compilers consuming that.

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia anyway, it's just two inputs to a function being 8 bit, getting added and then stored through a pointer pointing to an 8 bit value.

void add(global char* out, char a, char b) {
out[0] = a + b;
}

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia yeah.. compiling with -O1 would solve the issue, sadly that could generate LLVM IR which the SPIRV-LLVM-Translator won't be able to consume, which we use atm becuase the SPIRV target isn't ready yet.

I'm sure this issue will be solved over time with the proper SPIRV target, but yeah...

I was considering running some LLVM opts, but most of them cause one or another issue.

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia yeah.. instcombine can generate integer types of non pot bit size and the spirv-llvm-translator doesn't handle them at all, so that's sadly not an option.

karolherbst OP , vor 14 Tagen

@a1ba @VegaHarmonia I've played around with running some LLVM opt passes, it's just not a great model to hope that some passes don't screw it up for us.

karolherbst OP , vor 14 Tagen

@CodingThunder being as close to the input as possible.

karolherbst OP , vor 14 Tagen

@CodingThunder sometimes there are some annoying language rules in the way, like integer promotion in C, which would cause an 8 bit addition to get represented as conversion to 32 bit, 32 bit add and a conversion to 8 bit

karolherbst , vor 15 Tagen

@thephd it depends on what "T[2] foo, bar;" would mean

karolherbst , vor 15 Tagen

@thephd in that case you get an approval from me!

karolherbst OP , vor 17 Tagen

@jhwgh1968 nah, FIXED_NOREPLACE just means the mmap call won't replace existing mappings.

karolherbst OP , vor 17 Tagen

@jhwgh1968 mhhh.. I can't really sub-allocate, because after munmap the original mapping is just gone as well...

though maybe I can make it work without reserving such a huge range, but I'm kinda worried about fragmentation, but... maybe that's fine...

karolherbst OP , vor 16 Tagen

@lina @jhwgh1968 yeah, it should.

Which just brings me back to the original question, if reserving that amount of VM space is a good idea and if there are other options.

I also wonder how well that would work with things like libasan, which just allocates 20TB of virtual memory here.

Anyway, it seems like Intel's CL stack just hopes nothing conflicts and maybe I just do the same, because it should be fine (tm).

karolherbst OP , vor 17 Tagen

@jhwgh1968 apparently chromium has a private extension users can't disable, which grants *.google.com domains special privileges and access to private APIs.

Apparently the same extension is also available on edge.

See https://fedi.simonwillison.net/@simon/112757810519145581