Re: [OMPI users] mpirun only work for 1 processor
Dear Patrick and all, Finally I solved the problem. I need to mount -t nfs the home directory of host to the node/home And then I can run in the cluster Thank you for your time. Best regards Ha Chi On Thu, 4 Jun 2020 at 17:09, Patrick Bégou < patrick.be...@legi.grenoble-inp.fr> wrote: > Ha Chi, > > first running MPI applications as root in not a good idea. You must create > users in your rocks cluster without admin rights for all that is not system > management. > > Let me know a little more about how you launch this: > 1) Do you run "mpirun" from the rocks frontend or from a node ? > 2) Ok from ssh from the frontend to the node but BETWEEN 2 nodes ? > > Patrick > > Le 04/06/2020 à 10:02, Hà Chi Nguyễn Nhật a écrit : > > Dear Patrick, > Thanks so much for your reply, > Yes, we use ssh to log on the node. From the frontend, we can ssh to the > nodes without password. > the mpirun --version in all 3 nodes are identical, openmpi 2.1.1, and same > place when testing with "whereis mpirun" > So is there any problem with mpirun causing it to not launch to other > nodes? > > Regards > HaChi > > On Thu, 4 Jun 2020 at 14:35, Patrick Bégou via users < > users@lists.open-mpi.org> wrote: > >> Hi Ha Chi >> >> do you use a batch scheduler with Rocks Cluster or do you log on the node >> with ssh ? >> If ssh, can you check that you can ssh from one node to the other >> without password ? >> Ping just says the network is alive, not that you can connect. >> >> Patrick >> >> Le 04/06/2020 à 09:06, Hà Chi Nguyễn Nhật via users a écrit : >> >> Dear Open MPI users, >> >> Please help me to find the solution for the problem using mpirun with a >> ROCK cluster, 3 nodes. I use the command: >> mpirun -np 12 --machinefile machinefile.txt --allow-run-as-root ./wrf.exe >> But mpirun was unable to access other nodes (as the below photo). But >> actually I checked the connection of three nodes by command "ping node's >> IP", they are well connected. >> [image: 2.png] >> My machinefile.txt includes IP of three nodes (frontend and 2 connected >> nodes), like this: >> 10.1.85.1 slots=4 >> 10.1.85.254 slots=4 >> 10.1.85.253 slots=4 >> >> My cluster is built by a ROCK cluster, with 3 nodes, CPUS 8 per each node. >> *My question is: How can I connect 3 nodes to run together?* >> >> Please advise >> Thanks >> Ha Chi >> >> -- >> *Ms. Nguyen Nhat Ha Chi* >> PhD student >> Environmental Engineering and Management >> Asian Institute of Technology (AIT) >> Thailand >> >> >> > > -- > *Ms. Nguyen Nhat Ha Chi* > PhD student > Environmental Engineering and Management > Asian Institute of Technology (AIT) > Thailand > > > -- *Ms. Nguyen Nhat Ha Chi* PhD student Environmental Engineering and Management Asian Institute of Technology (AIT) Thailand
Re: [OMPI users] mpirun only work for 1 processor
Ha Chi, first running MPI applications as root in not a good idea. You must create users in your rocks cluster without admin rights for all that is not system management. Let me know a little more about how you launch this: 1) Do you run "mpirun" from the rocks frontend or from a node ? 2) Ok from ssh from the frontend to the node but BETWEEN 2 nodes ? Patrick Le 04/06/2020 à 10:02, Hà Chi Nguyễn Nhật a écrit : > Dear Patrick, > Thanks so much for your reply, > Yes, we use ssh to log on the node. From the frontend, we can ssh to > the nodes without password. > the mpirun --version in all 3 nodes are identical, openmpi 2.1.1, and > same place when testing with "whereis mpirun" > So is there any problem with mpirun causing it to not launch to other > nodes? > > Regards > HaChi > > On Thu, 4 Jun 2020 at 14:35, Patrick Bégou via users > mailto:users@lists.open-mpi.org>> wrote: > > Hi Ha Chi > > do you use a batch scheduler with Rocks Cluster or do you log on > the node with ssh ? > If ssh, can you check that you can ssh from one node to the other > without password ? > Ping just says the network is alive, not that you can connect. > > Patrick > > Le 04/06/2020 à 09:06, Hà Chi Nguyễn Nhật via users a écrit : >> Dear Open MPI users, >> >> Please help me to find the solution for the problem using mpirun >> with a ROCK cluster, 3 nodes. I use the command: >> mpirun -np 12 --machinefile machinefile.txt --allow-run-as-root >> ./wrf.exe >> But mpirun was unable to access other nodes (as the below photo). >> But actually I checked the connection of three nodes by command >> "ping node's IP", they are well connected. >> 2.png >> My machinefile.txt includes IP of three nodes (frontend and 2 >> connected nodes), like this: >> 10.1.85.1 slots=4 >> 10.1.85.254 slots=4 >> 10.1.85.253 slots=4 >> >> My cluster is built by a ROCK cluster, with 3 nodes, CPUS 8 per >> each node. >> *My question is: How can I connect 3 nodes to run together?* >> * >> * >> Please advise >> Thanks >> Ha Chi >> >> -- >> *Ms. Nguyen Nhat Ha Chi* >> PhD student >> Environmental Engineering and Management >> Asian Institute of Technology (AIT) >> Thailand > > > > > -- > *Ms. Nguyen Nhat Ha Chi* > PhD student > Environmental Engineering and Management > Asian Institute of Technology (AIT) > Thailand
Re: [OMPI users] mpirun only work for 1 processor
Dear Patrick, Thanks so much for your reply, Yes, we use ssh to log on the node. From the frontend, we can ssh to the nodes without password. the mpirun --version in all 3 nodes are identical, openmpi 2.1.1, and same place when testing with "whereis mpirun" So is there any problem with mpirun causing it to not launch to other nodes? Regards HaChi On Thu, 4 Jun 2020 at 14:35, Patrick Bégou via users < users@lists.open-mpi.org> wrote: > Hi Ha Chi > > do you use a batch scheduler with Rocks Cluster or do you log on the node > with ssh ? > If ssh, can you check that you can ssh from one node to the other without > password ? > Ping just says the network is alive, not that you can connect. > > Patrick > > Le 04/06/2020 à 09:06, Hà Chi Nguyễn Nhật via users a écrit : > > Dear Open MPI users, > > Please help me to find the solution for the problem using mpirun with a > ROCK cluster, 3 nodes. I use the command: > mpirun -np 12 --machinefile machinefile.txt --allow-run-as-root ./wrf.exe > But mpirun was unable to access other nodes (as the below photo). But > actually I checked the connection of three nodes by command "ping node's > IP", they are well connected. > [image: 2.png] > My machinefile.txt includes IP of three nodes (frontend and 2 connected > nodes), like this: > 10.1.85.1 slots=4 > 10.1.85.254 slots=4 > 10.1.85.253 slots=4 > > My cluster is built by a ROCK cluster, with 3 nodes, CPUS 8 per each node. > *My question is: How can I connect 3 nodes to run together?* > > Please advise > Thanks > Ha Chi > > -- > *Ms. Nguyen Nhat Ha Chi* > PhD student > Environmental Engineering and Management > Asian Institute of Technology (AIT) > Thailand > > > -- *Ms. Nguyen Nhat Ha Chi* PhD student Environmental Engineering and Management Asian Institute of Technology (AIT) Thailand
Re: [OMPI users] mpirun only work for 1 processor
Hi Ha Chi do you use a batch scheduler with Rocks Cluster or do you log on the node with ssh ? If ssh, can you check that you can ssh from one node to the other without password ? Ping just says the network is alive, not that you can connect. Patrick Le 04/06/2020 à 09:06, Hà Chi Nguyễn Nhật via users a écrit : > Dear Open MPI users, > > Please help me to find the solution for the problem using mpirun with > a ROCK cluster, 3 nodes. I use the command: > mpirun -np 12 --machinefile machinefile.txt --allow-run-as-root ./wrf.exe > But mpirun was unable to access other nodes (as the below photo). But > actually I checked the connection of three nodes by command "ping > node's IP", they are well connected. > 2.png > My machinefile.txt includes IP of three nodes (frontend and 2 > connected nodes), like this: > 10.1.85.1 slots=4 > 10.1.85.254 slots=4 > 10.1.85.253 slots=4 > > My cluster is built by a ROCK cluster, with 3 nodes, CPUS 8 per each node. > *My question is: How can I connect 3 nodes to run together?* > * > * > Please advise > Thanks > Ha Chi > > -- > *Ms. Nguyen Nhat Ha Chi* > PhD student > Environmental Engineering and Management > Asian Institute of Technology (AIT) > Thailand
[OMPI users] mpirun only work for 1 processor
Dear Open MPI users, Please help me to find the solution for the problem using mpirun with a ROCK cluster, 3 nodes. I use the command: mpirun -np 12 --machinefile machinefile.txt --allow-run-as-root ./wrf.exe But mpirun was unable to access other nodes (as the below photo). But actually I checked the connection of three nodes by command "ping node's IP", they are well connected. [image: 2.png] My machinefile.txt includes IP of three nodes (frontend and 2 connected nodes), like this: 10.1.85.1 slots=4 10.1.85.254 slots=4 10.1.85.253 slots=4 My cluster is built by a ROCK cluster, with 3 nodes, CPUS 8 per each node. *My question is: How can I connect 3 nodes to run together?* Please advise Thanks Ha Chi -- *Ms. Nguyen Nhat Ha Chi* PhD student Environmental Engineering and Management Asian Institute of Technology (AIT) Thailand
