Re: [Valgrind-developers] Testing with QEMU and mips32/64, arm32/64

[Petar J. <mip...@gm...>]

@Julian
*> due to lack of nightly test machines for some architectures, especially
mips32/64 and ...*

While it may not be important for this thread, there is actually a set of
Valgrind nightly build slaves [1] for selected MIPS variants (MIPS32r1-LE,
MIPS32r2-LE, MIPS64-LE, MIPS64-BE). The buildbot has been in place since
2012, but the results have not been sent to the Valgrind mailing list. If
anyone wants to take a look now, note that the large number of reported
failures today is related to r15060. Prior to that, we had a dozen failures
in average. E.g. [2].

As of MIPS and QEMU, I suggest you to take QEMU Debian images from
Imagination Debian repository [3]. QEMU itself can be taken from the trunk
[4].

Last, I believe the situation with MIPS machines on GCC Farm will be sorted
out soon.

Regards,
Petar

[1] http://www.rt-rk.com/mips-buildbot/builders
[2]
http://www.rt-rk.com/mips-buildbot/builders/XLP316/builds/500/steps/shell_1/logs/stdio
[3] http://mipsdebian.imgtec.com/
[4] http://wiki.qemu.org/Download

On Tue, Apr 7, 2015 at 4:44 PM, Julian Seward <js...@ac...> wrote:

>
> Hi Torbjörn,
>
> Once again in Valgrind land we are having problems due to lack of
> nightly test machines for some architectures, especially mips32/64
> and arm32/64.
>
> In the context of the conversation below, I seem to remember you said
> something to the effect that you use QEMU to solve this problem for
> GMP.  Do I remember correctly?
>
> If so, do you have any information that you can share, regarding
> configurations of QEMU and Linux distros for these targets?  I am wondering
> if we can set up QEMU VMs for at least some of them, so I am writing to ask
> if you know which QEMU+distro combinations work well enough to actually be
> useful.
>
> Thanks,
>
> J
>
>
>
> -------- Forwarded Message --------
> Subject: Re: [Gcc-cfarm-users] Is there a mips(64)el box?
> Date: Fri, 10 Oct 2014 11:28:39 +0200
> From: Julian Seward <js...@ac...>
> Reply-To: js...@ac...
> To: Torbjörn Granlund <tg...@gm...>
> CC: Sergio Durigan Junior <ser...@re...>, gcc...@gn...,
> Philippe Waroquiers <phi...@sk...>
>
> On 10/10/2014 09:38 AM, Torbjörn Granlund wrote:
> > The only machines which are actually alive which are useful TO ME are
> > the two power7 machines.  They allowed me to improve the performance of
> > my code for the chips, and let me do regular testing for ppc64 and AIX.
>
> The Power7 machine is also useful for Valgrind support.  Without it it
> would be more difficult to maintain the ppc64 Valgrind port.
>
> There are (or were, at one time) a lot of machines in the farm, but most
> of them were x86 variants, which IMO are the least valuable because that
> hardware is most widely available.  What the farm is really useful
> for is the more obscure stuff, viz, MIPS, PPC, ARM, which are harder to
> get hold of.  For sure if there were fast, solid MIPS32/64 and AArch32/64
> machines, they would be useful for Valgrind testing and development.
>
> My impression is that it would be preferable to have fewer machines in
> the farm, but concentrate on providing at least one reliable, fast
> implementation of each of MIPS, PPC and ARM (32 and 64 bit in all
> cases).  That is, to try and emphasise quality (breadth and reliability
> of supported targets) over quantity (numbers of machines).
>
> J
>
>
>
>
>
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