- Infos im HLRS Wiki sind nicht rechtsverbindlich und ohne Gewähr -
- Information contained in the HLRS Wiki is not legally binding and HLRS is not responsible for any damages that might result from its use -

CRAY XC40 Graphic Environment: Difference between revisions

From HLRS Platforms
Jump to navigationJump to search
 
(30 intermediate revisions by 3 users not shown)
Line 1: Line 1:
For graphical pre- and post-processing purposes 3 smp nodes equipped with 512 GB of main memory and 5 smp nodes equipped with 256 GB of main memory have been integrated into the external nodes of Hazelhen. Access to a single node is possible by using one of the node features mem512gb, mem256gb or mem128gb.
<pre>
user@eslogin00X> qsub -I -lnodes=1:mem512gb
</pre>
Another two multi user smp nodes are equipped with 1.5 TB of memory. Access to these nodes is possible by using the node feature smp and the smp queue. Access is scheduled by the amount of required memory which has to be specified by the vmem feature.
<pre>
user@eslogin00X> qsub -I -lnodes=1:smp:ppn=1 -q smp -lvmem=5gb
</pre>
To use the graphic hardware for remote rendering there are currently two ways tested. The first is via TurboVNC the second one is directly via VirtualGL.
To use the graphic hardware for remote rendering there are currently two ways tested. The first is via TurboVNC the second one is directly via VirtualGL.


= Visualisation Software =


To use the installed visualisation software please follow the steps described below.
= VNC Setup =
If you want to use the CRAY XC Graphic Hardware e.g. for graphical pre- and post-processing, on way to do it is via a vnc-connection. For that purpose you have to download/install a VNC viewer to/on your local machine.  


== Covise ==
E.g. TurboVNC comes as a pre-compiled package which can be downloaded from [http://sourceforge.net/projects/turbovnc/  http://sourceforge.net/projects/turbovnc/]. For Fedora 20 the package tigervnc is available via yum installer.


== ParaView ==
Other VNC viewers can also be used but we recommend the usage of TurboVNC, an accelerated version of TightVNC
designed for video and 3D applications, since we run the TurboVNC server on the visualisation nodes and  the combination of the two components will give the best performance for GL applications.


=== Building Paraview ===
== Preparation of Hazelhen ==
Before using vnc for the first time you have to log on to one of the hazelhen front ends (hazelhen.hww.de). Create a .vnc directory in your home directory and run
<pre>
user@eslogin00X> vncpasswd
</pre>
which creates a passwd file in the .vnc directory.


To build ParaView on hww machines first of all download the source package of the version to be build from http://www.paraview.org/download and extract it to your home directory.
== Starting the VNC server ==


The second step would be to '''create an empty build directory outside the source directory''' since an out of source build is the recomended way to compile ParaView.
To start a VNC session you simply have to login to one of the front ends  (hermit1.hww.de) via ssh.


To build ParaView certain recent dependencies have to be satisfied. For an OpenGL build these are:
<pre>
user@client>ssh hazelhen.hww.de
</pre>


*Autotools
Then load the VirtualGL module to setup the VNC environment and launch the VNC startscript.
*Cmake
<pre>
*Qt 4
user@eslogin00X>module load tools/VirtualGL
user@eslogin00X>vis_via_vnc.sh
</pre>


If you plan to build a ParaView server suitable for the Hornet compute nodes also recent versions of
This will set up a default VNC session with one hour walltime running a TurboVNC server with a resolution of 1240x900.
To control the configuration of the VNC session the vis_via_vnc.sh script has '''optional''' parameters.


*LLVM with CLang
<pre>
*libclc and
vis_via_vnc.sh [walltime] [geometry] [x0vnc] [-msmp | -mem256gb | -mem128gb] [memory] [-s]
*Mesa
</pre>


have to be available.
where walltime can be specified in format hh:mm:ss or only hh.  


All of these dependencies are installed on Hornet. Currently the following versions are available:
The geometry option sets the resolution of the Xvnc server launched by the TurboVNC session and has to be given in format widhtxheight.


*m4-1.4.17
If neither of the -msmp, -mem256gb nor the -mem128gb option is used the default node type with 512 GB main memory is used.
*autoconf-2.69
*automake-1.14
*libtool-2.4.2
*pkg-config-0.28
*llvm-3.4.2
*libclc-0.1.5
*Mesa-10.2.2
*Qt-4.8.6
*Cmake-3.0.2


=== Environment setup ===
If x0vnc is specified instead of a TurboVNC server with own Xvnc Display a X0-VNC server is started. As its name says this server is directly connected to the :0.0 Display which is contoled by an X-Server always running on the visualisation nodes. A session started with this option will have a fixed resolution which can not be changed.


To modify your environment in a way that the dependencies of the OpenGL-Client are usable, source the following bash-script.
There is also a --help option which returns the explanation of the parameters and gives examples for script usage.


'''setenv-gl.sh'''
The vis_via_vnc.sh script returns the name of the node reserved for you, a display number and the IP-address.


== VNC viewer with -via option ==
If you got a VNC viewer which supports the via option like TurboVNC or TigerVNC you can simply call the viewer
like stated below
<pre>
<pre>
#!/bin/bash
user@client>vncviewer -via hazelhen.hww.de <node name>:<Display#>
#
# Setup modules #######################################
module load tools/autotools
module load tools/cmake
module unload PrgEnv-cray
module load PrgEnv-gnu
module swap gcc/4.9.1 gcc/4.8.1
#
# QT #################################################
export LD_LIBRARY_PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/qt/lib:$LD_LIBRARY_PATH
export PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/qt/bin:$PATH
#
</pre>
</pre>


To modify your environment in a way that the dependencies of the Mesa-Server are usable, source the following bash-script.
== VNC viewer without -via option ==
If you got a VNC viewer without support of the vis option, like JavaVNC or TightVNC for Windows, you have to setup a ssh tunnel via the frontend first and then launch the VNC viewer with a connection to localhost
<pre>
user@client>ssh -N -L10000:<IP-address of vis-node>:5901 &
user@client>vncviewer localhost:10000
</pre>


'''setenv-mesa.sh'''
Enter the vnc password you set on the frontend and you should get a Gnome session running in your VNC viewer.


== GL applications within the VNC session with TurboVNC ==
To execute 64Bit GL Applications within the VNC-session you have to open a shell and again load the VirtualGL module to set the VirtualGL environment and then start the application with the VirtualGL wrapper command
<pre>
<pre>
#!/bin/bash
user@vis-node> module load tools/VirtualGL
#
user@vis-node> vglrun <Application command>
# Setup modules #######################################
module load tools/autotools
module load tools/cmake
module unload PrgEnv-cray
module load PrgEnv-gnu
module swap gcc/4.9.1 gcc/4.8.1
#
# LLVM ###############################################
export LD_LIBRARY_PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/llvm/lib:$LD_LIBRARY_PATH
export PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/llvm/bin:$PATH
#
# MESA ###############################################
export LD_LIBRARY_PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/mesa/lib:$LD_LIBRARY_PATH
#
# QT #################################################
export LD_LIBRARY_PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/qt/lib:$LD_LIBRARY_PATH
export PATH=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/qt/bin:$PATH
#
</pre>
</pre>


This means, copying one of the statement-sets above to a file e.g. named setenv-pv.sh and executing
[[Image:vgl_in_vnc_session.png]]
 
== GL applications within the VNC session with X0-VNC ==
Since the X0-VNC server is directly reading the frame buffer of the visualisation node's graphic card, GL applications can be directly executed within the VNC session without using any wrapping command.
 
== Ending the vnc session ==
 
If the vnc session isn't needed any more and the requested walltime isn't expired already you should kill your queue job with


<pre>
<pre>
source setenv-pv.sh
user@eslogin00X>qdel <jour_job_id>
</pre>
</pre>


will make your environment ready to build ParaView.
= VirtualGL Setup (WITHOUT turbovnc) =


=== Configuration ===
To use VirtualGL you have to install it on your local client. It is available in the form of pre-compiled packages at [http://www.virtualgl.org/Downloads/VirtualGL http://www.virtualgl.org/Downloads/VirtualGL].


To configure and afterwards build ParaView enter your empty build directory and execute ccmake
== Linux ==
After the installation of VirtualGL you can connect to Hazelhen via the vglconnect command
<pre>
user@client>vglconnect -s hazelhen.hww.de
</pre>
Then call the prepare the visualisation queue job and connect to the reserved visualisation node via the vglconnect command
<pre>
user@eslogin001>module load tools/VirtualGL
user@eslogin001>vis_via_vgl.sh XX:XX:XX
user@eslogin001>vglconnect -s vis-node
</pre>
where XX:XX:XX is the walltime required for your visualisation job and vis-node the hostname of the visualisation node reserved for you.
 
On the visualisation node you can then execute 64Bit GL applications with the VirtualGL wrapper command


<pre>
<pre>
cd <your_build_directory>
user@vis-node>module load tools/VirtualGL
ccmake -Wno-dev <paraview_source_directory>
user@vis-node>vglrun <Application command>
</pre>
</pre>


Press '''c''' for intial configuration. After cmake has done the initial configuration change the build parameters according to your needs. For the installation
= Visualisation Software =
 
To use the installed visualisation software please follow the steps described below.
 
== Covise ==
 
== ParaView ==
 
=== Building Paraview ===
 
This info has been moved to the admin wiki.
 
=== Using Paraview ===
 
==== Serial client on pre-/postprocessing nodes ====


Allocate a pre-/postprocesisng node with the vis_via_vnc.sh script provided by the tools/VirtualGL module. On an eslogin node execute:
<pre>
module laod tools/VirtualGL
vis_via_vnc.sh [walltime] [geometry]
</pre>
Connect to the VNC-session by one of the methodes issued by the script. Within the VNC-session open a terminal and execute:
<pre>
<pre>
BUILD_DOCUMENTATION            : OFF
module laod tools/VirtualGL
BUILD_EXAMPLES                : OFF
module load tools/paraview/5.3.0-git-master-Pre
BUILD_SHARED_LIBS              : ON
vglrun paraview
BUILD_TESTING                  : OFF
CMAKE_BUILD_TYPE              : Release
PARAVIEW_ENABLE_PYTHON        : ON
PARAVIEW_INSTALL_DEVELOPMENT_F : ON
PARAVIEW_USE_MPI              : ON
</pre>
</pre>


Depending whether the OpenGL-Client or the Mesa-Server should be build the prefix is:
==== Launch parallel server on compute nodes ====
In order to launch a parallel pvserver on the Hazelhen compute nodes, request the number of compute nodes you need
<pre>
qsub -I -lnodes=XX:ppn=YY -lwalltime=hh:mm:ss -N PVServer
</pre>
On the mom node do:
<pre>
<pre>
CMAKE_INSTALL_PREFIX          : /opt/hlrs/tools/paraview/4.1.0/OpenGL
module load tools/paraview/5.3.0-git-master-parallel-Mesa
aprun -n XX*YY -N YY pvserver
</pre>
</pre>
or
Once the server is running it should respond with something like:
<pre>
<pre>
CMAKE_INSTALL_PREFIX          : /opt/hlrs/tools/paraview/4.1.0/Mesa
Waiting for client...
Connection URL: cs://nidxxxxx:portno
Accepting connection(s): nidxxxxx:portno
</pre>
</pre>
showing that it is ready to be connected to an interactive client. Where nidxxxxx is the actual name of the headnode the pvserver is running on and portno is the port number the pvserver on the headnode is listening to waiting for a client to perform the connection handshake.


Press '''c''' for configuration. After the configuration has finished you should encounter the following error:
==== Connect to parallel server from multi user smp nodes ====
To connect interactively to a parallel pvserver running on the compute nodes first of all allocate yourself a VNC-session on one of the multi user smp nodes by using the -msmp option of the vis_via_vnc.sh script.
<pre>
module load tools/VirtualGL
vis_via_vnc.sh 01:00:00 1910x1010 -msmp
</pre>


Connect to the VNC-session by one of the methodes issued by the script. Within the VNC-session open a terminal and execute:
<pre>
<pre>
CMake Error at VTK/CMake/vtkTestingMPISupport.cmake:31 (message):
module load tools/paraview/5.3.0-git-master-Pre
  MPIEXEC was empty.
pvconnect -pvs nidxxxxx:portno -via momX
Call Stack (most recent call first):
  VTK/Parallel/MPI/CMakeLists.txt:4 (include)
</pre>
</pre>


Press '''e''' to exit the error display, press '''t''' to toogle advanced options and change the following build parameters.
Where nidxxxxx:portno is the string returned by the pvserver with "Accepting connection(s):" and momX is the name of the mom node to which your qsub for the pvserver was diverted to. For academic users this is one of network1 to network6. The pvconnect command will launch a paraview client that is already connected to the specified pvserver.


<pre>
==== Known Issues ====
MPIEXEC                        : aprun
* '''Missing D3 Filter:'''<br /> If you loose the connection to the pvserver and do a reconnect from within the the same ParaView client that had lost the connection, you will probably find the D3 Filter missing in the Filters menu. To avoid this issue you have to shut down the ParaView client once the connection to a previously server is lost and do a new connection from within a new ParaView Client. Alternatively use again the pvconnect command explained above.
MPIEXEC_MAX_NUMPROCS          : 24
 
MPI_Fortran_COMPILER          : /opt/cray/craype/2.2.0/bin/ftn
= CAE Software =


Module_vtkFiltersParallelGeome : ON
To use the installed cae software please follow the steps described below.
Module_vtkFiltersSelection    : ON
Module_vtkIOMPIParallel        : ON
Module_vtkImagingMath          : ON
Module_vtkImagingStatistics    : ON
Module_vtkImagingStencil      : ON
VTK_Group_Imaging              : ON
VTK_Group_MPI                  : ON


CMAKE_SHARED_LINKER_FLAGS      : -z muldefs
== Fluent ==
</pre>


After changing these parameters you have to press '''c''' two times. After two configuration runs you will get a new option '''[g] to generate'''.  
The usage via VNC enables the possibility to use GUI on the pre nodes. For this purpose enable a VNC session and start your VNC viewer on your local machine. See description above for details.


Press '''g''' to generate the makefiles an exit cmake.
If everything worked, a x-terminal screen will appear:


If you want to build the Mesa-Server another non interactive configuration has to be done by executing the following command.  
[[File:fvwm_on_pre_node.png]]


'''To build the OpenGL-Client you have to skip this step.'''
A VNC session via ssh on the pre/postnode is established and you are connected.


Start your work now. For example for Fluent type into the console the module load:
<pre>
<pre>
cmake \
user@eslogin00X> module load cae/ansys/16.1
    <paraview_source_directory> \
  -DPARAVIEW_BUILD_QT_GUI=OFF \
  -DVTK_USE_X=OFF \
  -DOPENGL_INCLUDE_DIR=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/mesa/include \
  -DOPENGL_gl_LIBRARY=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/mesa/lib/libOSMesa.so \
  -DOPENGL_glu_LIBRARY=/usr/lib/libGLU.so \
  -DVTK_OPENGL_HAS_OSMESA=ON \
  -DOSMESA_INCLUDE_DIR=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/mesa/include \
  -DOSMESA_LIBRARY=/sw/hornet/hlrs/tools/paraview/4.1.0/aux/mesa/lib/libOSMesa.so
</pre>
</pre>


=== Build ===
Note:
You can use parallel jobs, but be aware about the number of cores of the machine. If you are not sure, type into a console:
Start your work now. For example for Fluent type into the console the module load:
<pre>
user@eslogin00X> cat /proc/cpuinfo
</pre>


To build, login to a mom node e.g.
The output gives you the list of processor with number.
<pre>
<pre>
ssh mom12
…
processor      : 31
…
</pre>
</pre>


Then compile and install with  
The last processor info line gives the number of processors on that pre/post node.
Since hyper-threading is active, 16 cores are available.
The number of cores is  (n+1)/2...
 
Start Fluent GUI in your desired working directory.
<pre>
user@eslogin00X:/somepath/path/path/>fluent
</pre>
 
Adjust the set-up:
 
[[File:Fluent_setup_pre.png]]
 
Click OK and wait, since fluent GUI will start up.
Load your case, make changes if necessary.
Now, you can test, if job would start. For this, fluent will run with 16 mpi-runs on that node.
 
'''Please Note:'''
Do not run production runs, but short testing is OK.
For production runs, use the run script method via frontend as usual!
 
Once you have finished, cancel your job, quit fluent and log out via:
 
[[File:fvwm_logout.png]]
 
Click on fvwm button and press exit.
Shut down the x-terminal.


If you check on frontend via showq your jobs, the VNC session will still run if time is left.
You can cancel that job with:
<pre>
<pre>
make
user@eslogin00X:/somepath/path/>canceljob <yourjobid>
make install
</pre>
</pre>

Latest revision as of 11:36, 19 November 2018

For graphical pre- and post-processing purposes 3 smp nodes equipped with 512 GB of main memory and 5 smp nodes equipped with 256 GB of main memory have been integrated into the external nodes of Hazelhen. Access to a single node is possible by using one of the node features mem512gb, mem256gb or mem128gb. 

user@eslogin00X> qsub -I -lnodes=1:mem512gb

Another two multi user smp nodes are equipped with 1.5 TB of memory. Access to these nodes is possible by using the node feature smp and the smp queue. Access is scheduled by the amount of required memory which has to be specified by the vmem feature. 

user@eslogin00X> qsub -I -lnodes=1:smp:ppn=1 -q smp -lvmem=5gb

To use the graphic hardware for remote rendering there are currently two ways tested. The first is via TurboVNC the second one is directly via VirtualGL.


VNC Setup

If you want to use the CRAY XC Graphic Hardware e.g. for graphical pre- and post-processing, on way to do it is via a vnc-connection. For that purpose you have to download/install a VNC viewer to/on your local machine.

E.g. TurboVNC comes as a pre-compiled package which can be downloaded from http://sourceforge.net/projects/turbovnc/. For Fedora 20 the package tigervnc is available via yum installer.

Other VNC viewers can also be used but we recommend the usage of TurboVNC, an accelerated version of TightVNC designed for video and 3D applications, since we run the TurboVNC server on the visualisation nodes and the combination of the two components will give the best performance for GL applications.

Preparation of Hazelhen

Before using vnc for the first time you have to log on to one of the hazelhen front ends (hazelhen.hww.de). Create a .vnc directory in your home directory and run 

user@eslogin00X> vncpasswd

which creates a passwd file in the .vnc directory.

Starting the VNC server

To start a VNC session you simply have to login to one of the front ends (hermit1.hww.de) via ssh. 

user@client>ssh hazelhen.hww.de

Then load the VirtualGL module to setup the VNC environment and launch the VNC startscript. 

user@eslogin00X>module load tools/VirtualGL
user@eslogin00X>vis_via_vnc.sh

This will set up a default VNC session with one hour walltime running a TurboVNC server with a resolution of 1240x900. To control the configuration of the VNC session the vis_via_vnc.sh script has optional parameters. 

vis_via_vnc.sh [walltime] [geometry] [x0vnc] [-msmp | -mem256gb | -mem128gb] [memory] [-s]

where walltime can be specified in format hh:mm:ss or only hh.

The geometry option sets the resolution of the Xvnc server launched by the TurboVNC session and has to be given in format widhtxheight.

If neither of the -msmp, -mem256gb nor the -mem128gb option is used the default node type with 512 GB main memory is used.

If x0vnc is specified instead of a TurboVNC server with own Xvnc Display a X0-VNC server is started. As its name says this server is directly connected to the :0.0 Display which is contoled by an X-Server always running on the visualisation nodes. A session started with this option will have a fixed resolution which can not be changed.

There is also a --help option which returns the explanation of the parameters and gives examples for script usage.

The vis_via_vnc.sh script returns the name of the node reserved for you, a display number and the IP-address.

VNC viewer with -via option

If you got a VNC viewer which supports the via option like TurboVNC or TigerVNC you can simply call the viewer like stated below 

user@client>vncviewer -via hazelhen.hww.de <node name>:<Display#>

VNC viewer without -via option

If you got a VNC viewer without support of the vis option, like JavaVNC or TightVNC for Windows, you have to setup a ssh tunnel via the frontend first and then launch the VNC viewer with a connection to localhost 

user@client>ssh -N -L10000:<IP-address of vis-node>:5901 &
user@client>vncviewer localhost:10000

Enter the vnc password you set on the frontend and you should get a Gnome session running in your VNC viewer.

GL applications within the VNC session with TurboVNC

To execute 64Bit GL Applications within the VNC-session you have to open a shell and again load the VirtualGL module to set the VirtualGL environment and then start the application with the VirtualGL wrapper command 

user@vis-node> module load tools/VirtualGL
user@vis-node> vglrun <Application command>

Vgl in vnc session.png

GL applications within the VNC session with X0-VNC

Since the X0-VNC server is directly reading the frame buffer of the visualisation node's graphic card, GL applications can be directly executed within the VNC session without using any wrapping command.

Ending the vnc session

If the vnc session isn't needed any more and the requested walltime isn't expired already you should kill your queue job with 

user@eslogin00X>qdel <jour_job_id>

VirtualGL Setup (WITHOUT turbovnc)

To use VirtualGL you have to install it on your local client. It is available in the form of pre-compiled packages at http://www.virtualgl.org/Downloads/VirtualGL.

Linux

After the installation of VirtualGL you can connect to Hazelhen via the vglconnect command 

user@client>vglconnect -s hazelhen.hww.de

Then call the prepare the visualisation queue job and connect to the reserved visualisation node via the vglconnect command 

user@eslogin001>module load tools/VirtualGL
user@eslogin001>vis_via_vgl.sh XX:XX:XX
user@eslogin001>vglconnect -s vis-node

where XX:XX:XX is the walltime required for your visualisation job and vis-node the hostname of the visualisation node reserved for you.

On the visualisation node you can then execute 64Bit GL applications with the VirtualGL wrapper command 

user@vis-node>module load tools/VirtualGL
user@vis-node>vglrun <Application command>

Visualisation Software

To use the installed visualisation software please follow the steps described below.

Covise

ParaView

Building Paraview

This info has been moved to the admin wiki.

Using Paraview

Serial client on pre-/postprocessing nodes

Allocate a pre-/postprocesisng node with the vis_via_vnc.sh script provided by the tools/VirtualGL module. On an eslogin node execute: 

module laod tools/VirtualGL
vis_via_vnc.sh [walltime] [geometry]

Connect to the VNC-session by one of the methodes issued by the script. Within the VNC-session open a terminal and execute: 

module laod tools/VirtualGL
module load tools/paraview/5.3.0-git-master-Pre
vglrun paraview

Launch parallel server on compute nodes

In order to launch a parallel pvserver on the Hazelhen compute nodes, request the number of compute nodes you need 

qsub -I -lnodes=XX:ppn=YY -lwalltime=hh:mm:ss -N PVServer

On the mom node do: 

module load tools/paraview/5.3.0-git-master-parallel-Mesa
aprun -n XX*YY -N YY pvserver

Once the server is running it should respond with something like: 

Waiting for client...
Connection URL: cs://nidxxxxx:portno
Accepting connection(s): nidxxxxx:portno

showing that it is ready to be connected to an interactive client. Where nidxxxxx is the actual name of the headnode the pvserver is running on and portno is the port number the pvserver on the headnode is listening to waiting for a client to perform the connection handshake.

Connect to parallel server from multi user smp nodes

To connect interactively to a parallel pvserver running on the compute nodes first of all allocate yourself a VNC-session on one of the multi user smp nodes by using the -msmp option of the vis_via_vnc.sh script. 

module load tools/VirtualGL
vis_via_vnc.sh 01:00:00 1910x1010 -msmp

Connect to the VNC-session by one of the methodes issued by the script. Within the VNC-session open a terminal and execute: 

module load tools/paraview/5.3.0-git-master-Pre
pvconnect -pvs nidxxxxx:portno -via momX

Where nidxxxxx:portno is the string returned by the pvserver with "Accepting connection(s):" and momX is the name of the mom node to which your qsub for the pvserver was diverted to. For academic users this is one of network1 to network6. The pvconnect command will launch a paraview client that is already connected to the specified pvserver.

Known Issues

  • Missing D3 Filter:
    If you loose the connection to the pvserver and do a reconnect from within the the same ParaView client that had lost the connection, you will probably find the D3 Filter missing in the Filters menu. To avoid this issue you have to shut down the ParaView client once the connection to a previously server is lost and do a new connection from within a new ParaView Client. Alternatively use again the pvconnect command explained above.

CAE Software

To use the installed cae software please follow the steps described below.

Fluent

The usage via VNC enables the possibility to use GUI on the pre nodes. For this purpose enable a VNC session and start your VNC viewer on your local machine. See description above for details.

If everything worked, a x-terminal screen will appear:

Fvwm on pre node.png

A VNC session via ssh on the pre/postnode is established and you are connected.

Start your work now. For example for Fluent type into the console the module load: 

user@eslogin00X> module load cae/ansys/16.1

Note: You can use parallel jobs, but be aware about the number of cores of the machine. If you are not sure, type into a console: Start your work now. For example for Fluent type into the console the module load: 

user@eslogin00X> cat /proc/cpuinfo

The output gives you the list of processor with number. 

…
processor       : 31
…

The last processor info line gives the number of processors on that pre/post node. Since hyper-threading is active, 16 cores are available. The number of cores is (n+1)/2...

Start Fluent GUI in your desired working directory. 

user@eslogin00X:/somepath/path/path/>fluent

Adjust the set-up:

Fluent setup pre.png

Click OK and wait, since fluent GUI will start up. Load your case, make changes if necessary. Now, you can test, if job would start. For this, fluent will run with 16 mpi-runs on that node.

Please Note: Do not run production runs, but short testing is OK. For production runs, use the run script method via frontend as usual!

Once you have finished, cancel your job, quit fluent and log out via:

Fvwm logout.png

Click on fvwm button and press exit. Shut down the x-terminal.

If you check on frontend via showq your jobs, the VNC session will still run if time is left. You can cancel that job with: 

user@eslogin00X:/somepath/path/>canceljob <yourjobid>
Retrieved from "https://kb.hlrs.de/platforms/index.php?title=CRAY_XC40_Graphic_Environment&oldid=5113"