Changes between Version 41 and Version 42 of vnc3d/xpra

Timestamp:

11/20/20 14:16:57 (3 years ago)

Author:

Herwig Zilken

Comment:

--

vnc3d/xpra

@@ -40 +40 @@
 '''Authentication'''
 
-Xpra must communicate with JURECA via Secure Shell (SSH)
-and JURECA requires authentication to be password-less using SSH key-pair.\\
-Please test your system before you proceed.
+Xpra must communicate with JUWELS via Secure Shell (SSH)
+and JUWELS requires authentication to be password-less using SSH key-pair.\\
+Please test your setup before you proceed.
 
-Execute the command with your JURECA-userid on your local workstation.\\
-It must return the word 'success' for a successful SSH connection to JURECAVIS.
+Execute the command with your JUWELS-userid on your local workstation.\\
+It must return the word 'success' for a successful SSH connection to JUWELSVIS.
 
      Linux/MacOSX: \\'''ssh <YOUR-USERID>@juwelsvis.fz-juelich.de echo "success"'''
@@ -55 +55 @@
 
 1. '''Start application in Xpra-server''' on a JUWELS login node.
-2. '''Connect with Xpra-client from workstation to Xpra-server'''
-3. '''Check if Xpra-server stopped''' on the JUWELS login node.
+2. '''Connect with Xpra-client from your workstation to Xpra-server'''
+3. When your work is done, '''Check if Xpra-server stopped''' on the JUWELS login node.
 
 ==== 1. Start application in Xpra-server
@@ -62 +62 @@
 Login to any JUWELS login node and start application with Xpra-server. If you want hardware accelerated rendering, you need to login to a vis-login node.
 
-In the following example we use juwelsvis02.fz-juelich.de:
-
-Before you can use Xpra, you must load the needed modules, which are, as of November 2020:
+In the following example we use juwelsvis02.fz-juelich.de. Before you can use Xpra, you must load the needed modules, which are, as of November 2020:
 {{{ #!sh
 module --force purge
 module use otherstages
-ml Stages/Devel-2020  GCCcore/.9.3.0 xpra/4.0.4-Python-3.8.5
+ml Stages/2020  GCCcore/.9.3.0 xpra/4.0.4-Python-3.8.5
 }}}
 
-The you can a application via the "xpra" command:
+Then you can start an application via the "xpra" command:
 
 * '''simple X11''' application
@@ -82 +80 @@
 jwvis02> xpra start --start-child="vglrun glxgears" --min-quality=90
 }}}
-  * using VirtualGL for hardware accelerated server-side rendering only works, if a GPU with a running X-server is available
+  * using VirtualGL for hardware accelerated server-side rendering only works if a GPU with a running X-server is available
   * currently only on JUWELSVIS login nodes (juwelsvis00.fz-juelich.de to juwelsvis03.fz-juelich.de)
 
@@ -91 +89 @@
 }}}
 
-==== 2. Connect with Xpra-client from workstation to Xpra-server
+==== 2. Connect the Xpra-client from workstation to Xpra-server on HPC system
 
 Start the Xpra-client on the workstation to connect to the Xpra-server on JUWELS.\\
 
-* '''Connect using Xpra command line (primarily with Linux or MacOSX)'''
+* '''Connect using Xpra command line (primarily Linux or MacOSX)'''
 {{{ #!sh
 client> xpra attach ssh:<USERID>@<LOGINNODE>:<DISPLAYID>
 }}}
 
-* '''Connect using Xpra GUI (primarily with Windows)'''
+* '''Connect using Xpra GUI (primarily Windows)'''
 {{{ #!sh
 client> xpra_launcher
@@ -126 +124 @@
 **!ParaView** with full serverside rendering support using VirtualGL
 {{{ #!sh
-client> xpra start ssh:<USERID>@juwelsvis02.fz-juelich.de --start-child=xterm --min-quality=90
+jwvis02> module --force purge
+jwvis02> use otherstages
+jwvis02> ml Stages/2020  GCCcore/.9.3.0 xpra/4.0.4-Python-3.8.5
+
+jwvis02> xpra start --start-child=xterm --min-quality=90
 }}}
+
 Now start load the necessary modules and start !ParaView in the xterm:
 {{{ #!sh
@@ -134 +137 @@
 xterm> ml ParaView/5.8.1-Python-3.8.5
 xterm> paraview
+xterm> # use 'vglrun paraview' for hardware accelerated rendering on juwelsvis
 }}}