Dear list,
apparently the Clang installation is build against the headers of the
default GCC 4.8.5, which limits its understanding of C++ to C++11. Would
it be possible to at least target the headers of GCC5? That would at
least support C++14. Of course, with GCC8.2.0 being available as well,
C++17 should also be possible ;)
Kind regards,
Philipp
--
Philipp Berger https://moves.rwth-aachen.de/people/berger/
Software Modeling and Verification Group
RWTH Aachen University Phone +49/241/80-21206
Ahornstraße 55, 52056 Aachen, Germany
Dear all,
i made a mistake yesterday and misinterpreted the TIME column of
'squeue'. For PENDING jobs, it shows the requested time, for RUNNING
jobs, it shows the time since jobstart.
So the following jobs will hit the maintenance mark of 9 o'clock. So I
also had to requeue them:
111600,116276,116231,116287,119637,119647,118940,119631
Best
Marcus
--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner(a)itc.rwth-aachen.de
www.itc.rwth-aachen.de
Dear all,
we will have to do another maintenance. It will begin tomorrow at 9:00
o'clock.
Sorry for the short period, in which we could inform you.
Longer running jobs hda to be requeued. That are the following JobIDs:
117826, 116379
Best
Marcus
--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner(a)itc.rwth-aachen.de
www.itc.rwth-aachen.de
Hi all,
I have a question: how to do the X11 forwarding during interactive sessions?
What I do:
srun --nodes=4 --account=jara0172 --time=06:00:00 --exclusive --x11 --pty /usr/local_rwth/bin/zsh
But if I try to run xclock, I get an error:
X11 connection rejected because of wrong authentication.
Error: Can't open display: localhost:99.0
Best regards,
Uliana
---------
Dr. Uliana Alekseeva
Forschungszentrum Jülich
Institute for Advanced Simulation
D-52425 Jülich
Phone: (49) 2461 61 3429
IT Center RWTH Aachen University
HPC Group
Seffenter Weg 23
52074 Aachen
Phone: (49) 241 80 29711
Hi,
today the jobs I submit to CLAIX-2018 exit within one second.
The new modules, like intelmpi/2019 and openmpi/3.1.3, do not exist on
the back end host executing the batch script,
nrm020.hpc.itc.rwth-aachen.de .
+(0):ERROR:0: Unable to locate a modulefile for 'openmpi/3.1.3'
Instead, the module list on the back end seems to be the one of the old
LFS cluster parts. (the Claix2018 login node does still offer all new
modules)
Fixing the --partition=c18m flag does not change this for me.
Example Job with error: Job ID 90942
Best,
Jonas
Dear list,
I am looking to run large numbers of jobs as an Array Job using SLURM.
I created a job file "jobs.txt", containing one configuration per line.
Using SLURM_ARRAY_TASK_ID I select the appropriate line for the current
task and execute the corresponding configuration in the batch script.
My test file currently holds 1308 configurations, which I was unable to
submit using sbatch, as the MaxArrayTask variable seems to be set to
1001. What is the optimal/proposed way of scheduling large numbers of
configurations?
I need one core (or thread?!) per configuration (#SBATCH --cpus-per-task
1 and #SBATCH --ntasks-per-core 1 (are both necessary?)), 20G of memory
per configuration (#SBATCH --mem-per-cpu=20480M).
My hope was to build these large configuration lists and then later
submit them to our own batch system so that it would use all available
nodes to crunch all configurations blockwise serialised as fast as
possible. Is that not what the SLURM Array Jobs are supposed to do?
Kind regards,
Philipp
--
Philipp Berger https://moves.rwth-aachen.de/people/berger/
Software Modeling and Verification Group
RWTH Aachen University Phone +49/241/80-21206
Ahornstraße 55, 52056 Aachen, Germany
-------- Forwarded Message --------
Subject: IntelMPI/2019 problems with our code
Date: Fri, 18 Jan 2019 11:44:57 +0100
From: Jonas Becker <jonas.becker2(a)rwth-aachen.de>
To: Marcus Wagner <wagner(a)itc.rwth-aachen.de>
Hi,
our simulation aborts on CLAIX-2018 when using the intelmpi/2019 or
intelmpi/2018 module. The new OpenMPI module works for us.
The master rank waits for data from the worker ranks in a busy loop:
while(!flag) {
if (is_chkpt_time()) M_write();
MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD,
&flag, &stat);
}
The problem occurs pretty much reproducibly ~9 minutes after start of
the batch job. It occurs even at 2 mpi tasks (one master and one worker
process). During the first 9 minutes, the simulation works flawlessly.
All calls are in the MPI_COMM_WORLD communicator and work up to this
point. Then the simulation aborts:
Abort(635909) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Iprobe:
Invalid communicator, error stack:
PMPI_Iprobe(123): MPI_Iprobe(src=MPI_ANY_SOURCE, tag=MPI_ANY_TAG,
MPI_COMM_WORLD, flag=0x7ffe77c98c30, status=0x7ffe77c98c1c) failed
PMPI_Iprobe(90).: Invalid communicator
Do some of you successfully use intelmpi2018/2019 on the Claix-2018
cluster?
Our MPI code may contain a few mistakes that throw off intelmpi but not
openmpi. If simulations >10minutes are possible for everyone else, we
will look into finding and fixing it in our own code.
Another thing is that every time intelmpi is run in claix2018 batch
mode, it throws this warning:
MPI startup(): I_MPI_JOB_STARTUP_TIMEOUT environment variable is not
supported.
MPI startup(): To check the list of supported variables, use the
impi_info utility or refer to
https://software.intel.com/en-us/mpi-library/documentation/get-started.
Best,
Jonas
On 1/17/19 10:04 AM, Marcus Wagner wrote:
> Dear all,
>
>
> we canceled the actual maintenance, but made a new one for tomorrow 9
> o'clock. So all Jobs, which finish before that time, will run now.
>
>
> Btw.
>
> this list was not intended as a announcement list from our side.
> Weren't there any problems? Is everything clear regarding SLURM and
> CLAIX18 for you?
>
> If that is the case, we are really happy, but I barely can believe this.
>
>
>
> Best
> Marcus
>
>
Best
Marcus
--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner(a)itc.rwth-aachen.de
www.itc.rwth-aachen.de
Dear all,
we canceled the actual maintenance, but made a new one for tomorrow 9
o'clock. So all Jobs, which finish before that time, will run now.
Btw.
this list was not intended as a announcement list from our side.
Weren't there any problems? Is everything clear regarding SLURM and
CLAIX18 for you?
If that is the case, we are really happy, but I barely can believe this.
Best
Marcus
--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner(a)itc.rwth-aachen.de
www.itc.rwth-aachen.de
Good morning everyone,
we have to do a maintenance now, so no new jobs will be scheduled onto
the hosts. The running jobs will not be affected.
With kind regards
Marcus Wagner
--
Marcus Wagner, Dipl.-Inf.
IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner(a)itc.rwth-aachen.de
www.itc.rwth-aachen.de
