On Thu, 2025-07-24 at 00:10 -0500, Dale wrote:
Alexandru N. Barloiu wrote:
On Wed, 2025-07-23 at 22:42 -0500, Dale wrote:
Alexandru N. Barloiu wrote:
btw. dont be surprised if AMD stuff doesn't work as well as Intel
stuff.
I am not being a hater. Just being a realist. I was an Intel fan
boy.
Over time started to hate Intel. Made my first AMD system... and I
have
to say... not exactly loving it.
Some simple examples. Until very recently, kernel 6.16... which is
now
in RC7 stage, no cpu sensor. Kind of a problem. Intel cpus always
had
coretemp. Not saying they are not coming up, one by one. But you
spend
like 5000 or however much each of us spends... you expect to at
least
get a cpu temperature sensor that works.
Other example. Intel platform. Qemu. No problem. AMD. Weird ACPI
table.
which some setups, if you dont use modern enough edk2 firmware,
takes
45 seconds for the damn VM to start.
Other example. No XMP memory profiles. Will be a pain to actually
OC
memory. On intel platforms you just select the xmp profile and you
are
done. Not on AMD.
And finally another example. Not sure what the threadripper has.
But my
9950x3d has 8 SMT high performance cores. and 8 SMT power saving
cores.
but the kernel has no idea which is which. if you set your system
on
powersaving or balanced or high performance... that means nothing
to
the system. to be clear. 0->7 are high performance. 7->15
powersaving.
and 16->23 high performance siblings (smt - amd version of
hyperthreading), and 24->31 powersaving siblings. but again. the OS
is
completely unaware of this.
just some examples. am sure the amd folks will catch up with the
software. but just to be clear. lots of stuff dont work out of the
box.
and have to dig really deep for each individual little thing.
and some things just straight out dont work. and nobody tells you
ahead
of the purchase that they dont work. like for instance. my asus
870X
creative mobo came very high recommended. but nobody told me you
can't
install windows 10 on it. and nobody told me that wifi/bluetooth
doesn't work in linux. it will at some point. but it doesn't now.
sorry for the rant. just things i found out when i got my first AMD
system.
That's the reason why when I build, I don't build with the latest and greatest CPU, video card and other hardware. New stuff has always
had
lagging support in Linux. When something new comes out, Microsoft is
in
on the details early, likely because they pay a huge sum of money for
the info. So, when some new piece of hardware comes out, they get it first. In Linux, I've read that some things have to be reverse
engineered which is time consuming. Think about document scanners
and
printers. Some scanners and printers are still not supported and a
lot
only have limited support. Some of those have been out for years.
I'm not to surprised that you have ran into this. Since I built a
rig
that technology wise was already a year or two old, everything worked
out of the box for me. CPU temps and all. Mine seems to recognize
my
cores properly, as best I can tell anyway. Gkrellm isn't complaining
and neither is htop.
The one thing that freaked me out, CPU temps. They have a new and
improved sensor that reads from the silicone wafer itself, deep
inside
it seems. It responds faster and is likely more accurate but it is
much
higher temps than the old temp that was of the die, right under where
the CPU cooler sits it seems. When I first saw 190F temps, I kinda
freaked out a bit. I thought I was trying to cook a egg with my
CPU. I
was checking that the fans were running and all that. I think it was
Rich that posted a explanation. As I said, the temp is likely more
accurate but still, I was not expecting that.
When I build a new rig several years from now, I might build a AM5
that
is either available now or will be shortly. Even my first rig was
built
with things that had been released for close to a year. It was still
plenty fast for the time tho. I even named it Smoker. My next rig
was
named Fireball. I couldn't think of a good name for this rig that
would
line up with those two names so I went with Gentoo-1. I guess next
rig
will be Gentoo-2. ;-)
It is sometimes hard to tell if everything is supported. Linux is a
great community but someone has to be the first to buy something and
see
if things work. Once bought, you kinda stuck with it. It takes a
while. Then you have to figure out which forum or other website
where a
person is describing what works and what doesn't. Then how dated
that
info is. I find that usually after a year, it is likely supported as
far as CPU, mobo and such. Other stuff like printers may take
longer.
It is a problem tho. It's almost like a leap of faith when buying
newly
released hardware. Rant on. This may help the OP too. It may be a
good idea to mention that some things might not be well supported
yet.
Dale
:-) :-)
to be fair... the system i love most is a tired old x58 chipset. intel
950 cpu. 32GB of slow ass ram (think 1600). but has an intel 750 nvme.
and a modern nvidia 980. honestly... its just fine for most things
(HD). can't do 4k. i mean it can, but not well. but it does HD.
if you push enough ram on your system, and a good ssd, rest dont really
matter.
further more. its hard to tell. just saying. but its hard to tell. if
you have like intel 750 or 905 optane storage (a good ssd, these 2 are legendary). if you have that. and if you have ram to the max that your
platform can support. 32GB. 64. 128. whatever you can. and you have a
decent gpu. 980 still decent today. u cant actually tell that intel 950
cpu, one of the first is bad. can't tell nvidia 980 is bad. can't tell
1600 ram is bad.
and frankly, that machine is enough as a distcc server. funny thing
about distcc. :) it has a top bandwidth limit. somewhere between 8 and
16 threads you fill the entire gigabyte bandwidth.
I will say this. I had a 9980xe before with 128GB of ram. its a
monster. its also old. 2018 if i am not mistaken. 18 cores and 36
threads. my new 9950x3d only has 16 cores and 32 threads and only 96GB
of ram. so its not that much of an upgrade. old boosted speed was 4GHZ
(on 9980xe). on 9950x3d is 5.76. i get better single core performance.
1.76 more. that's about all i get. in 7 years.
I will also say this. I kept the intel 750 and intel 905p optane. Both
are god tier storage. But the optate is got tier squared. If you find
any of these bad boys... go do:
# smartctl -a /dev/nvme0 | grep "Available Spare Threshold"
and if that is below 100 buy them. i mean for the optane.
there's the scoop.
both intel 750 and 900(5) are way way way way faster than any modern
nvme drives. modern nvme drives are optimized for single thread
performance. u got one thread, single file, great. 7000 mbps. u dont
need 7000 coz nothing reads anything that fast. you cant feed it into
anything. but whatever. most things... when you increase the number of
threads, and maybe its not one single big file, but multiple small
files, and maybe you want to read and write at the same time....
i mean you are buying a 48 thread machine. right?
well. most modern nvmes can't handle stuff after 8. they were never
designed to do so.
intel 750 was. it was created from the start with the idea in mind that
the controller had to be absolutely able to do hundreds of threads at
the same time.
problem with intel 750... its a perishable drive. it has amazing
performance. it reads and writes with 2200/1600. regardless of threads
or files or anything else. it simply doesn't care. its performance per
core is equal to the performance of however many cores you put into it.
but then there's the 900. and the 905. optane. they kept the
controller, the one that doesn't care about how many threads you are
doing, and they changed the storage. and they invented this thing.
xpoint storage. in terms of ssd/nvme storage... that stuff doesn't die.
while normal drives count their max life in terabytes. tens. or
hundreds. or thousands on the high end. OPTANE counts its max life in petabytes.
believe me. if you find any of these drives, and they are not spent,
get them. your computer becomes something else when you have one of
these bad boys. they go directly into pciexpress. 4 lanes. but my god
they dont resemble anything that is out there. and a system with one of
them is so different from a system that doesn't. especially when you
push. the controller intel built into those things... what parallelism?
breaks the space time continuum.
changed ram. changed cpu. changed mobo. changed gpu. changed power
supply. but kept the 905p. i got a 9100 pro from samsung. guess that's
the new standard ssd. my optane still kicks it ass in random seek
read/write with as many threads as the cpu has.
--- SoupGate-Win32 v1.05
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