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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Yuan, Do you know whether Vince's 64-bit installation was on a headless server? We had previously experienced the issues that Vince described on a headless 64-bit CentOS server with an embedded ATI 16MB ES10000 internal card. Regards, Evan Lowery -----Original Message----- From: idvusers-bounces@xxxxxxxxxxxxxxxx [mailto:idvusers-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Yuan Ho Sent: Friday, July 30, 2010 3:52 PM To: idvusers@xxxxxxxxxxxxxxxx Cc: support-idv@xxxxxxxxxxxxxxxx Subject: [idvusers] running IDV in the XVNC and/XVBF Here is some information from a IDV user and it maybe useful to you: Dear Yuan: We have decided that Xvfb is simply broken in our 64-bit CentOS 5.5 environment. We have started running an instance of the Xvnc VNC server to provide the Xserver we need for our batch programs and it works fine for us. I would encourage others to try Xvnc if they have trouble with Xvfb. The intended purpose of Xvnc is to run a virtual X session to which users can connect over the network. We are simply running it for the X server to support batch IDV programs, though we could connect to the server from a VNC client, if necessary for debugging. Here are some observations on the Xvfb issue: We gave up on Xvfb after concluding that it is broken, at least the version which is provided with CentOS 5.5. We suspect that it was not ported correctly to a 64-bit environment. Perhaps it makes invalid assumption about the sizes of data types -- something that is likely to be critical for a program which handles a complex binary protocol. Some clues: A user of IDV reported that he was able to use Xvfb in a 32-bit CentOS environment, but had no luck in a 64-bit installation. valgrind reports many, many errors when I run Xvfb on mopfl, but none when I run it on my personal 32-bit Fedora system. Thanks for your help. Regards, Vince _______________________________________________ idvusers mailing list idvusers@xxxxxxxxxxxxxxxx For list information, to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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