Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Hello,I'm running Gempak 5.11.4 under 64 bit Centos 5.5 on a server with 16 GB of memory and 8 x Intel Xeon 5450 @ 3.00GHz processors, standard out of the box kernel, things have been stable for a while.
Historically, I have taught a small class (4-5) where students log in to a central server via putty and run gempak command line programs (sfmap,gdplot3, etc.) while piping xwindows to their local screen (using Xming for Xwindow emulation)
This year, my class size is 11. When I get to about 6 instances of sfmap running, any additional sfmap attempts gets messages like this:
$ sfmap Error in message send = 22 itype, ichan, nwords,1,-1,2 Creating process: gplt for queue -1 Error in message send = 22 itype, ichan, nwords,1,-1,3 [GEMPLT -1] NMBRER - Mailbox read.Interestingly, I do not have this problem with GUI programs like nmap2 or nwx, I have been able to run ~20 simultaneous instances without incident.
I've looked for renegade gplt processes and ipcs and found nothing out of the ordinary. System load & memory usage are both reasonable. Is there a limitation that I am not aware of? Does running in 64 bit have anything to do with it? Are there kernel options or gempak compilation options that can be set somewhere to get around this? '
Any advice is greatly appreciated. Thanks, Brendon -- Brendon Hoch Technology Manager Judd Gregg Meteorology Institute MSC 48, Boyd Hall 321A Plymouth State University Plymouth, NH 03264 (603)535-2818 Fax: (603)535-2723 http://vortex.plymouth.edu/~bhoch
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