Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Bruce Dubbs]

Thanos Baloukas wrote:

On 06/08/2017 07:56 μμ, Ken Moffat wrote:

On Sun, Aug 06, 2017 at 06:38:45PM +0300, Thanos Baloukas wrote:

On 06/08/2017 05:57 μμ, Alan Feuerbacher wrote:

On 8/5/2017 10:58 PM, Thanos Baloukas wrote:


I'm going to buy a new system to speed up lfs builds. From what I read
the new AMD Ryzen 7 1700 would be a good choice for this job. Has anyone
tested this processor on lfs?


In early May I bought a new ASUS TUF motherboard, Intel 3770 processor,
and 32G of ram. LFS builds quickly on this new system. I would think
that the new AMD processor would be similar.


Thanks. My concern is not that much on speed, various benchmarks
I've seen show it's fast enough. What I have in mind is stability
and compatibility. Segmentation faults, software produced not running
on other machines and such.


For not running on other machines, my usual answer is to blame gmp.


Except from gmp, I thought that until gcc catch up with Ryzen,
such problems would arise.


If the problem was illegal instruction, I would agree with you, but it's 
hard to see how the compiler that works with Intel and other AMD 
processors would case segmentation faults.


In addition, the rather long thread I read indicated that the problem was 
erratic.  Users would repeatedly compile mesa (or other packages) in a 
loop and it would fail at random iterations.  That points to HW.


My best guess that the problem is some sort of complex timing problem 
between the processor and it's support chips.


  -- Bruce


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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Thanos Baloukas]

On 06/08/2017 07:56 μμ, Ken Moffat wrote:

On Sun, Aug 06, 2017 at 06:38:45PM +0300, Thanos Baloukas wrote:

On 06/08/2017 05:57 μμ, Alan Feuerbacher wrote:

On 8/5/2017 10:58 PM, Thanos Baloukas wrote:


I'm going to buy a new system to speed up lfs builds. From what I read
the new AMD Ryzen 7 1700 would be a good choice for this job. Has anyone
tested this processor on lfs?


In early May I bought a new ASUS TUF motherboard, Intel 3770 processor,
and 32G of ram. LFS builds quickly on this new system. I would think
that the new AMD processor would be similar.


Thanks. My concern is not that much on speed, various benchmarks
I've seen show it's fast enough. What I have in mind is stability
and compatibility. Segmentation faults, software produced not running
on other machines and such.


For not running on other machines, my usual answer is to blame gmp.


Except from gmp, I thought that until gcc catch up with Ryzen,
such problems would arise.


Nowadays I always use the fsf config scripts in gmp:

cp -v  config{fsf,}.guess
cp -v config{fsf,}.sub

and then run configure.  I don't _expect_ to run binaries on a
different machine, but this seems a safer thing to do.

For Ryzen, I hope to get one - but I need to sort out various things
first (e.g. my KVM switches and monitors all use D-SUB, I don't see
me coming up with a quick solution to that).  But in the last week I
remember seeing a post on lkml about problems with Ryzen, and it
seems there are a lot of reports.

One thread starts at
https://community.amd.com/thread/215773?start=0=0
and it looks as if segfaults are common.

Other reports, e.g. at phoronix, note that some users are seeing the
problems and others aren't.

ĸen


Thanks for the link, it's very enlightening. It seems that I'll have to
delay the order until things clear up. A chasing game is happening
between users, AMD people, bios manufacturers, and kernel and gcc
developers, and I'd rather not get into that.

Opting in favor of Intel's safety is still an option, but 8 cores,
16 threads, at 65w TDP, for about 300 euro is very tempting
and I think it deserves some waiting.

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Thanos
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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Simon Geard]

On Sun, 2017-08-06 at 17:56 +0100, Ken Moffat wrote:
> For Ryzen, I hope to get one - but I need to sort out various things
> first (e.g. my KVM switches and monitors all use D-SUB, I don't see
> me coming up with a quick solution to that).  But in the last week I
> remember seeing a post on lkml about problems with Ryzen, and it
> seems there are a lot of reports.
> 
> One thread starts at
> https://community.amd.com/thread/215773?start=0=0
> and it looks as if segfaults are common.
> 
> Other reports, e.g. at phoronix, note that some users are seeing the
> problems and others aren't.

Yeah, the issue has blown up over the last week or so, and there
doesn't seem to be a lot of clarity yet...

It's probably not helped by the fact that a lot of the reports are
probably different problems - some might represent a genuine Ryzen
problem, others could be bad RAM, others software bugs, etc... there
are so many possible causes for segfaults.

Simon.

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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Richard Melville]

On 6 August 2017 at 17:56, Ken Moffat  wrote:

> On Sun, Aug 06, 2017 at 06:38:45PM +0300, Thanos Baloukas wrote:
> > On 06/08/2017 05:57 μμ, Alan Feuerbacher wrote:
> > > On 8/5/2017 10:58 PM, Thanos Baloukas wrote:
> > >
> > > > I'm going to buy a new system to speed up lfs builds. From what I
> read
> > > > the new AMD Ryzen 7 1700 would be a good choice for this job. Has
> anyone
> > > > tested this processor on lfs?
> > >
> > > In early May I bought a new ASUS TUF motherboard, Intel 3770 processor,
> > > and 32G of ram. LFS builds quickly on this new system. I would think
> > > that the new AMD processor would be similar.
> > >
> > Thanks. My concern is not that much on speed, various benchmarks
> > I've seen show it's fast enough. What I have in mind is stability
> > and compatibility. Segmentation faults, software produced not running
> > on other machines and such.
> >
> For not running on other machines, my usual answer is to blame gmp.
> Nowadays I always use the fsf config scripts in gmp:
>
> cp -v  config{fsf,}.guess
> cp -v config{fsf,}.sub
>
> and then run configure.  I don't _expect_ to run binaries on a
> different machine, but this seems a safer thing to do.
>
> For Ryzen, I hope to get one - but I need to sort out various things
> first (e.g. my KVM switches and monitors all use D-SUB, I don't see
> me coming up with a quick solution to that).
>

HDMI (or DVI) to D-SUB adapter.

Richard
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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Ken Moffat]

On Sun, Aug 06, 2017 at 06:38:45PM +0300, Thanos Baloukas wrote:
> On 06/08/2017 05:57 μμ, Alan Feuerbacher wrote:
> > On 8/5/2017 10:58 PM, Thanos Baloukas wrote:
> > 
> > > I'm going to buy a new system to speed up lfs builds. From what I read
> > > the new AMD Ryzen 7 1700 would be a good choice for this job. Has anyone
> > > tested this processor on lfs?
> > 
> > In early May I bought a new ASUS TUF motherboard, Intel 3770 processor,
> > and 32G of ram. LFS builds quickly on this new system. I would think
> > that the new AMD processor would be similar.
> > 
> Thanks. My concern is not that much on speed, various benchmarks
> I've seen show it's fast enough. What I have in mind is stability
> and compatibility. Segmentation faults, software produced not running
> on other machines and such.
> 
For not running on other machines, my usual answer is to blame gmp.
Nowadays I always use the fsf config scripts in gmp:

cp -v  config{fsf,}.guess
cp -v config{fsf,}.sub

and then run configure.  I don't _expect_ to run binaries on a
different machine, but this seems a safer thing to do.

For Ryzen, I hope to get one - but I need to sort out various things
first (e.g. my KVM switches and monitors all use D-SUB, I don't see
me coming up with a quick solution to that).  But in the last week I
remember seeing a post on lkml about problems with Ryzen, and it
seems there are a lot of reports.

One thread starts at
https://community.amd.com/thread/215773?start=0=0
and it looks as if segfaults are common.

Other reports, e.g. at phoronix, note that some users are seeing the
problems and others aren't.

ĸen
-- 
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everything is a duck as far as I'm concerned.  -- Monstrous Regiment
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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Thanos Baloukas]

On 06/08/2017 05:57 μμ, Alan Feuerbacher wrote:

On 8/5/2017 10:58 PM, Thanos Baloukas wrote:


I'm going to buy a new system to speed up lfs builds. From what I read
the new AMD Ryzen 7 1700 would be a good choice for this job. Has anyone
tested this processor on lfs?


In early May I bought a new ASUS TUF motherboard, Intel 3770 processor,
and 32G of ram. LFS builds quickly on this new system. I would think
that the new AMD processor would be similar.


Thanks. My concern is not that much on speed, various benchmarks
I've seen show it's fast enough. What I have in mind is stability
and compatibility. Segmentation faults, software produced not running
on other machines and such.

--
Thanos
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Re: [lfs-support] Anyone tried the AMD Ryzen 7 1700 processor on LFS?

[Alan Feuerbacher]

On 8/5/2017 10:58 PM, Thanos Baloukas wrote:


I'm going to buy a new system to speed up lfs builds. From what I read
the new AMD Ryzen 7 1700 would be a good choice for this job. Has anyone
tested this processor on lfs?


In early May I bought a new ASUS TUF motherboard, Intel 3770 processor, 
and 32G of ram. LFS builds quickly on this new system. I would think 
that the new AMD processor would be similar.


Alan
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