[cfarm-users] cleanup on gcc119?

2018-03-26 Thread Steven R Loomis via cfarm-users 
 
/scratch is nice and big on gcc119, but /tmp is pretty full.
 
Filesystem    1024-blocks      Free %Used    Iused %Iused Mounted on/dev/hd3          2097152     23616   99%    16322    24% /tmp/dev/ramdisk0    67108864  41979172   38%   152696     2% /scratch
 
 
Steven R. Loomis
IBM Global Foundations Technology Team
Technical Lead, ICU for C/C++
Phone: 1-720-342-4930  https://ibm.biz/srloomis 
E-mail: srloo...@us.ibm.com

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Re: [cfarm-users] peko, please 'nice' your jobs

2018-03-26 Thread Segher Boessenkool via cfarm-users 
On Mon, Mar 26, 2018 at 03:26:53PM +0100, Jonathan Wakely via cfarm-users wrote:
> Peter's jobs rarely use a huge number of cores (and gcc112 has a lot
> of them) so my request was as much that he doesn't just run constant
> jobs in a permanent loop, which the machines are not meant to be for.

It has only 20 cores.  It has 160 threads, but that is not the same
thing.


Segher
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Re: [cfarm-users] peko, please 'nice' your jobs

2018-03-26 Thread Peter Korsgaard via cfarm-users 
> "Stefan" == Stefan Ring via cfarm-users 
>  writes:

Hi,

 > On Mon, Mar 26, 2018 at 3:56 PM, Jonathan Wakely via cfarm-users
 >  wrote:
 >> I can't remember ever using gcc112 when it wasn't running several jobs
 >> for "peko", all run without nice.
 >> 
 >> Please remember these are shared machines, and running jobs
 >> back-to-back all day, every day doesn't seem necessary.

 > Unfortunately, nice buys you close to nothing on machines with
 > multiple virtual threads per core (Hyper Threading or SMT), and the
 > POWER machines are heavily multi-threaded. So the only good remedy is
 > to start fewer simultaneous jobs than there are physical cores in a
 > machine.

I've scaled down from make -j16 to -j8.

-- 
Bye, Peter Korsgaard
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Re: [cfarm-users] peko, please 'nice' your jobs

2018-03-26 Thread David Edelsohn via cfarm-users 
On Mon, Mar 26, 2018 at 10:15 AM, Peter Korsgaard via cfarm-users
 wrote:

>> "Jonathan" == Jonathan Wakely via cfarm-users 
>>  writes:
>
>  > I can't remember ever using gcc112 when it wasn't running several jobs
>  > for "peko", all run without nice.
>
> Sorry, fixed.
>
>  > Please remember these are shared machines, and running jobs
>  > back-to-back all day, every day doesn't seem necessary.
>
> This is an autobuilder (randconfig) setup for Buildroot, but I have
> scaled back the number of jobs to 1/4, hopefully that is OK?

Peter,

If you are running an autobuilder that is running continually, then
you should request a dedicated VM from OSUOSL.  The GNU Compile Farm
system is okay for intermittent builders and testers, but not intended
for a user to monopolize the system -- even part of the system -- for
an autobuilder that runs continuously.

Thanks, David
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Re: [cfarm-users] peko, please 'nice' your jobs

2018-03-26 Thread Peter Korsgaard via cfarm-users 
[resent with correct from]

> "Jonathan" == Jonathan Wakely via cfarm-users 
>  writes:

 > I can't remember ever using gcc112 when it wasn't running several jobs
 > for "peko", all run without nice.

Sorry, fixed.

 > Please remember these are shared machines, and running jobs
 > back-to-back all day, every day doesn't seem necessary.

This is an autobuilder (randconfig) setup for Buildroot, but I have
scaled back the number of jobs to 1/4, hopefully that is OK?

-- 
Bye, Peter Korsgaard
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