Re: [Gfs-users] problem with communications of nodes in parallel simulations
Brought to you by:
popinet
From: Pascal R. <ra...@lm...> - 2011-03-26 15:16:56
|
Hi Armin, if you are using SGE it would be very interesting to see your sge error file ( e file by default) because the deferredcompilation is the only gerris problem which write nothing, all the other problems generate beautiful error files, after may be we'll need the help of S. Popinet for understanding it ! ;-) On Sat, 26 Mar 2011 14:48:31 +0100 Armin Ghadjardjazi <ar...@gm...> wrote: > Hi Pascal , > > I tried commenting out the line, it did not work. well the problem is > actually one month ago I did the same simulations and I got very good > results. now when I try the same thing it just hangs even before the first > iteration.( no display at all) > > my domain is split correctly now , so I do not think , that this is the > problem. > > We are using Linux/OpenSUSE Enterprise server 10 SP3 > > Kernel version 2.6.16.60-0.69.1-smp > > with OpenMPI and SGE > > these are the basic Information I know ,for more I can ask our IT peolple > and let you know. > > Thanks, > Armin > > > On Sat, Mar 26, 2011 at 2:51 PM, Pascal Ray <ra...@lm...> wrote: > > > Hi Armin, > > > > what is exactly your problem ? > > did you try to remove this two lines at the begenning of your parallel gfs > > file ? > > # when editing this file it is recommended to comment out the following > > line > > GfsDeferredCompilation > > > > in more in one previous send I saw you forgetted to split your file before > > to > > use -b or -p options of gerris, for example : > > > > gerris2D -s 2 one_box.gfs > s2_one_box.gfs > > it splits two times and you'll have 16 boxes. > > > > gerris -b 4 s2_one_box.gfs > b4s2_one_box.gfs > > you put 4 processors onto your 16 boxes. > > > > last, what is your system for your cluster, linux + Rocks ? > > your network, infiniband ? > > your mpi library, openmpi ? > > your batch system, SGE ? > > from my experience many problems come from the batch system, especially > > when you > > want to use more than one node. > > > > Best, > > Pascal > > > > > > On Sat, 26 Mar 2011 11:55:01 +0100 > > Armin Ghadjardjazi <ar...@gm...> wrote: > > > > > Hi Everyone, > > > > > > has anyone come up with any solution concerning the hang-up of parallel > > > simulations on multiple nodes? Our people in IT division have not been > > able > > > to find a solution for this yet. > > > > > > any suggestions are welcomed. > > > > > > thanks, > > > Armin > > > > > > > > > -- > > Pascal Ray <ra...@lm...> > > > > > > ------------------------------------------------------------------------------ > > Enable your software for Intel(R) Active Management Technology to meet the > > growing manageability and security demands of your customers. Businesses > > are taking advantage of Intel(R) vPro (TM) technology - will your software > > be a part of the solution? Download the Intel(R) Manageability Checker > > today! http://p.sf.net/sfu/intel-dev2devmar > > _______________________________________________ > > Gfs-users mailing list > > Gfs...@li... > > https://lists.sourceforge.net/lists/listinfo/gfs-users > > > -- Pascal Ray <ra...@lm...> |