2.6.9-78.0.17.ELpapismp #1 SMP Tue Apr 7 13:14:04 CDT 2009 x86_64 x86_64 x86_64 GNU/Linux
On Thu, Mar 17, 2011 at 2:55 PM, Ralph Castain <r...@open-mpi.org> wrote: > What OS version is it? > > uname -a > > will tell you, if you are on linux. > > On Mar 17, 2011, at 1:31 PM, vaibhav dutt wrote: > > Hi, > > Thanks for your reply. I tried to execute first a process by using > > mpirun -machinefile hostfile.txt --slot-list 0:1 -np 1 > > but it gives the same as error as mentioned previously. > > Then, I created a rankfile with contents" > > rank 0=t1.tools.xxx slot=0:0 > rank 1=t1.tools.xxx slot=1:0. > > and the used command > > mpirun -machinefile hostfile.txt --rankfile my_rankfile.txt -np 2 > > but ended up getting same error. Is there any patch that I can install in > my system to make it > topology aware? > > Thanks > > > On Thu, Mar 17, 2011 at 2:05 PM, Ralph Castain <r...@open-mpi.org> wrote: > >> The error is telling you that your OS doesn't support queries telling us >> what cores are on which sockets, so we can't perform a "bind to socket" >> operation. You can probably still "bind to core", so if you know what cores >> are in which sockets, then you could use the rank_file mapper to assign >> processes to groups of cores in a socket. >> >> It's just that we can't do it automatically because the OS won't give us >> the required info. >> >> See "mpirun -h" for more info on slot lists. >> >> On Mar 17, 2011, at 11:26 AM, vaibhav dutt wrote: >> >> > Hi, >> > >> > I am trying to perform an experiment in which I can spawn 2 MPI >> processes, one on each socket in a 4 core node >> > having 2 dual cores. I used the option "bind to socket" which mpirun >> for that but I am getting an error like: >> > >> > An attempt was made to bind a process to a specific hardware topology >> > mapping (e.g., binding to a socket) but the operating system does not >> > support such topology-aware actions. Talk to your local system >> > administrator to find out if your system can support topology-aware >> > functionality (e.g., Linux Kernels newer than v2.6.18). >> > >> > Systems that do not support processor topology-aware functionality >> cannot >> > use "bind to socket" and other related functionality. >> > >> > >> > Can anybody please tell me what is this error about. Is there any other >> option than "bind to socket" >> > that I can use. >> > >> > Thanks. >> > _______________________________________________ >> > users mailing list >> > us...@open-mpi.org >> > http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
