Yup. That is probably your problem. -Ken
On 9/10/08 3:02 PM, "Biao She" <[EMAIL PROTECTED]> wrote: > Hi Ken. Thanks for reply again. > I have tried this command, but the error is still the same: "DISPLAY is not > accessible on the server side". > In the wiki, there are three things to do with X Connections: > 1. Have xdm run on each cluster node at startup. Although xdm is almost always > run at startup on workstation installations, it is not as commonplace to be > run on cluster nodes. Talk to your system administrators for help in setting > this up. > 2. Disable all security on the X server. That is, allow any process to open a > window on the x server without having to log in. Again, talk to your system > administrators for help. > 3. Make sure each process is run with the DISPLAY environment variable set to > localhost:0 (or just :0). > I have talked to system administrator about the first two things. The guy said > that both are ok on the cluster, but he isn't 100 percent sure about the > second thing. I try to run the glxgeasr program but it doesn't work. The error > I got is "couldn't open display '(null)' " > Could the problem result from the first two configurations? What do you think? > > Thanks, > > Aaron > > On Wed, Sep 10, 2008 at 1:37 PM, Moreland, Kenneth <[EMAIL PROTECTED]> wrote: >> It sounds like you are using the env program wrong. The env program runs a >> command, specified on its command line, with a modified environment, but >> does not modify the environment of the calling program. To use env, you >> need to use it within your mpirun command: >> >> mpirun -np 4 /usr/bin/env DISPLAY=localhost:0 ./pvserver >> >> -Ken >> >> >> On 9/10/08 11:32 AM, "Biao She" <[EMAIL PROTECTED]> wrote: >> >>>> Thanks your help again, Ken. >>>> You figure out my problem. I indeed connect to localhost:10.0. I am a >>> newbie >>>> of Linux and ssh, I don't know how to connect to localhost:0.0 instead of >>>> 10.0. After I ssh to the cluster, the DISPLAY automatically set to >>>> localhost:10.0. I use "/usr/bin/env DISPLAY=localhost:0" command to set it >>>> back. Then, when I try to connect to the paraview server, I get an error >>> like >>>> this "DISPLAY is not accessible on the server side". >>>> I know that if I start pvserver from the cluster directly, the DISPLAY is >>>> localhost:0, but the cluster doesn't have any keyboard and monitor. >>>> How can I connect to localhost:0 remotely? >>>> Thanks! >>>> >>>> Aaron >>>> >>>> >>>> On Wed, Sep 10, 2008 at 7:09 AM, Moreland, Kenneth <[EMAIL PROTECTED]> >>> wrote: >>>>>> First, let me just say that you should not expect the parallel rendering >>>>>> of >>>>>> such a small data set to be faster than just rendering it locally. The >>>>>> parallel rendering has a constant overhead involving the readback of >>>> pixels, >>>>>> the transfer of data, and the computation of compositing operations. >>>>>> >>>>>> That said, based on the error it looks like your DISPLAY environment is >>>>>> >>> set >>>>>> wrong. You should be connecting to localhost:0.0, not localhost:10.0. >>>>>> >>> You >>>>>> are probably forwarding all of your rendering commands back to the >>>> desktop >>>>>> you logged in from though ssh forwarding. That, of course, will really >>>>>> >>> slow >>>>>> things down because all the rendering commands are being shoved through >>>>>> >>> the >>>>>> network and all are being processed on a single machine. >>>>>> >>>>>> Make sure that you are actually rendering to the local GPU. See the >>>>>> ParaView Wiki for more advice. >>>>>> >>>>>> http://www.paraview.org/Wiki/Setting_up_a_ParaView_Server >>>>>> >>>>>> -Ken >>>>>> >>>>>> >>>>>> On 9/9/08 4:24 PM, "Biao She" <[EMAIL PROTECTED]> wrote: >>>>>> >>>>>>>>>> Hi there. >>>>>>>>>> I use the client/server mode of paraview to render a small data(about >>>>>>>>>> 4M), >>>>>>>>>>>> but >>>>>>>>>> the speed is very slow. >>>>>>>>>> Below is how I do it: >>>>>>>>>> I first ssh to the cluster and start the pvserver by this command: >>>>>>>>>> >>>>> mpirun >>>>>>>>>>>> -np >>>>>>>>>> 4 ./pvserver. The cluster is SGI Altix 4000. The operating system on >>>>>>>>>> the >>>>>>>>>> cluster is SUSe linux, 64 bits system. >>>>>>>>>> Then, I launch the paraview client on my local windows computer. >>>>>> After the >>>>>>>>>> client connected to the server, there are two types of errors: >>>>>>>>>> 1. Xlib: extension "XFree86-DRI" missing on display "localhost:10.0" >>>>>>>>>> 2. unaligned access to 0x600000000197a1bc, ip=0x2000000003568e0 >>>>>>>>>> Paraview works regardless of these errors, but the problem is that >>>>>>>>>> the >>>>>>>>>> rendering speed is way too slow. >>>>>>>>>> I am wondering what could cause the slow down? Maybe the paraview >>>>>> doesn't >>>>>>>>>>>> use >>>>>>>>>> GPU on the clusters at all? How could I tell if the paraveiw use GPU >>>>>>>>>> or >>>>>>>> not? >>>>>>>>>> Or the unaligned access slow down the speed? These errors keep on >>>>>> repeating >>>>>>>>>> whenever I change the viewplane. >>>>>>>>>> I have stalled by this problem for days, any idea would be highly >>>>>>>> appreciated. >>>>>>>>>> >>>>>>>>>> Thanks! >>>>>>>>>> >>>>>>>>>> Aaron >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>> >>>> >> > _______________________________________________ ParaView mailing list [email protected] http://www.paraview.org/mailman/listinfo/paraview
