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Hi Randy, I'm a convert to NX/FreeNX now completely: by opening a ssh tunnel to your lab-machine you are then able to open a window on your home computer that has a complete desktop in it. And it uses some very fancy compression methods ... don't ask me what. Sitting at home with a 1MB line (half the speed of what you have) it feels like sitting on the remote computer. Absolutely incredible ... at least to me (remembering the slow ssh -X connections, with or without -C). you can even integrate images with the normal MOSFLM running on the remote computer. Have a look at http://www.nomachine.com/ http://freenx.berlios.de/ Cheers Clemens On Mon, Jul 03, 2006 at 04:17:16PM +0100, Randy Read wrote: > *** For details on how to be removed from this list visit the *** > *** CCP4 home page http://www.ccp4.ac.uk *** > > > I just thought I would pass on a trick that Paul Adams and Nigel Moriarty > pointed out recently. That was in the context of the Phenix interface, but > it applies equally to ccp4i. > > If you've ever tried to run ccp4i over the network using ssh and X > forwarding, > you might have been discouraged by how slow it becomes, particularly with > anything less than the fastest connections. I had almost given up on running > ccp4i when connecting from home via broadband (2Mb connection, which is fast > enough for most other things). > > Nigel looked into this problem and found out that the speed of X forwarding > can be increased dramatically by turning on compression when running ssh > (using the -C flag). Perhaps this is no news to many of you, but I had > certainly missed that flag in the documentation. As an illustration of the > size of the effect, it takes 260 seconds to open the Phaser molecular > replacement GUI without the -C flag on my home connection, but only 33 > seconds with the -C flag. Still slow, but bearable. > > On either an iBook running OSX 10.3 or a laptop running Fedora Core 4, the > command I use to connect is: > > ssh -X -C [EMAIL PROTECTED] > > The -X flag may not be required, depending on the setup, but says to turn > on X forwarding. Paul Adams says that this doesn't work for some > connections, > in which case replacing "-X" by "-Y" might work. This turns off some > security checks and may get around firewall issues. > > Presumably there are equivalent flags when connecting from non-Unix-based > machines, but I don't have an X client on my Windows machines; perhaps > someone else can comment. > > -- > > Randy J. Read > Department of Haematology, University of Cambridge > Cambridge Institute for Medical Research Tel: + 44 1223 336500 > Wellcome Trust/MRC Building Fax: + 44 1223 336827 > Hills Road E-mail: [EMAIL PROTECTED] > Cambridge CB2 2XY, U.K. www-structmed.cimr.cam.ac.uk > > -- *************************************************************** * Clemens Vonrhein, Ph.D. vonrhein AT GlobalPhasing DOT com * * Global Phasing Ltd. * Sheraton House, Castle Park * Cambridge CB3 0AX, UK *-------------------------------------------------------------- * BUSTER Development Group (http://www.globalphasing.com) ***************************************************************
