FAQ

1. General Questions

   1. How can I ask a question?

      If you have any questions concerning Migrating Desktop please send an email to cgrid@man.poznan.pl

   2. What kind of environment/systems are supported by Migrating Desktop?

      Migrating Desktop is an interface to Grids, and works with following platforms: gLite 3.0, LCG 2.7, (used by EEGE, BalticGrid, int.eu.grid...). But due to open architecture of MD it can be easily ported to support other HPC systems.

   3. What do you mean by interactive application?

      When interactive application is running you can send input data and recieve outputs before the application is terminated. In other word you can change the parameters of the job while it is running and get results. There is an bi-directional channel between client and the application program running on remote machine.

   4. What are the plans for Migrating Desktop development?

      • enhance interactive application support
      • integrate with glogin and gvid
      • add compability next releases of gLite platform
      • improve stability and fault tolerance
      • integrate workflow system

   5. What are your plans concerning Migrating Desktop support?

      Migrating Desktop would be supported at least by the end of 2007 as it is a part of BalticGrid project. Migrating Desktop would be developed at least by the begining of 2008 as it is a part of int.eu.grid project. If there will be such interest product will be developed and supported longer.

   6. Can I add my own application to Migrating Desktop?

      Yes. You can add an application to Migrating Desktop. Please go to developer zone for technical information. Adding application to Migrating Desktop is not the same as allowing to run such application on testbeds supported by MD. You have to get access from testbed administrators.

2. Installation

   1. What version of Axis do you use?

      We are currently using Axis version 1.2.1.

3. Runtime

   1. I cannot login to RAS, even due to the proper password

      1. Most often, this problem is caused by incorrect RAS server address and port. Please check these fields again
      2. If above does not solve your problem, you may have issues with connection type. Please make sure you use direct connection

   2. How to add "decorations" to MD splash screen?

      To set "decoration" to Migrating Desktop splash window, property "Splash.Decorated=true" should be manually added to MD Login Dialog configuration file (e.g. $HOME/./md/client.cfg))

   3. I cannot connect to any GridFTP server

      1. Reason: Problems with credential created by CoG for Windows version 1.0a or newer. In CoG for Windows version 1.0a or newer grid-proxy-init command generates proxy with subject ending with CN="number" (e.g. C=Country, O=GRID, O=Organisation, CN=User Name, CN=2084914250) which is valid but not accepted by GridFTP servers. Solution: Use visual-grid-proxy-init command that generates proxy with subject ending with "CN=proxy", and is accepted by GridFTP servers
      2. Reason: GridFTP server doesn't work correctly. Try telnet <server_address> <port> (default GridFTP port is 2811). Check if GridFTP server is responding correctly. Solution: Report problem to GridFTP server administrator.

   4. Local firewall blocks GridFTP connections

      Please refer to Network Requirements
      Try telnet <server_address> <port> (default GridFTP port is 2811). If you cannot open connections to GridFTP server on port you specified, the most propably reason is firewall that blocks GridFTP connections. Solution:

      • Use tunneled connection to GridFTP server
      • Ask local network administrator to open firewall for GridFTP connectons (e.g. ports 2811 for control chanel and 13000-17000 for data chanel)