[FFmpeg-devel] Hardware purchase request: AVX512-capable laptop

[Lynne]

Jan 7, 2024, 01:40 by kierank at obe.tv:

> On Sat, 6 Jan 2024, 19:00 Lynne, <dev at lynne.ee> wrote:
>
>> Jan 7, 2024, 00:36 by kierank at obe.tv:
>>
>> > On Sat, 6 Jan 2024, 16:06 Lynne, <dev at lynne.ee> wrote:
>> >
>> >> Jan 6, 2024, 21:15 by remi at remlab.net:
>> >>
>> >> >
>> >> >
>> >> > Le 6 janvier 2024 20:26:42 GMT+02:00, Michael Niedermayer <
>> >> michael at niedermayer.cc> a écrit :
>> >> >
>> >> >>
>> >> >>
>> >> > >I think some kind of remotely usable system does make sense for every
>> >> volunteer
>> >> > >who wants to work. It simply results in more available time for that
>> >> work.
>> >> >
>> >> >>
>> >> >>
>> >> > >Even i (who doesnt travel volunteerly around) have needed and used my
>> >> notebook
>> >> > >for FFmpeg away from my desktop system many times.
>> >> > >When ive spend some time in appartments of other familiy members,
>> when
>> >> i had to
>> >> > >change my own apartment due to very noisy neighbors and so forth
>> >> >
>> >> >>
>> >> >>
>> >> > >Maybe a compromise would be a cheap laptop that is just used to login
>> >> and
>> >> > >access the more powerfull hardware via SSH ?
>> >> >
>> >> > That sounds much more sensible indeed.
>> >> >
>> >>
>> >> To address your concerns about limited lifetime and durability,
>> >> I chose the ThinkPad. It's not a +2k eur Macbook, it's serviceable,
>> >> and I can still do stuff with it that I can't do on my current setups.
>> >> We have many times more than enough to cover it, and make no
>> >> impact on the project's finances.
>> >> I could agree to jamrial's suggestion too, though I don't think it
>> >> would be as durable or problem-free.
>> >>
>> >
>> > But didn't you say the ThinkPad doesn't support AVX-512?
>> >
>>
>> Err, no? It has a 7840U, which according to
>> https://www.amd.com/en/product/13186
>> has support for AVX512.
>> I was initially confused as it's labelled as a Ryzen 7, and I thought
>> Ryzen 9s
>> were the ones based on Zen 4, but afaik both 7 and 9 are Zen 4.
>>
>
> There is still no reason why you couldn't use the dedicated NUC that has
> AVX512 and access it remotely with a much cheaper laptop.
>

It's more practical to work on a local machine without having to
compile everything, and setting up for accurate benchmarking is
doable as you wouldn't disturb anyone else's work by switching
the scheduler or fixing the frequency.
I also messaged you about getting access to the Ampere machine
a little over a week ago, but you didn't respond, so sysadmin latency
is high.