1 / 3

MPI without tight integration

MPI without tight integration. Node 01. Node 02. < pbs_mom > tracked session. < sshd / rshd >. <Job script> #PBS –l select=3:ncpus=2:mpiprocs=2 … … m pirun - hostfile $PBS_NODEFILE a.out. a.out. < pbs_mom >. a.out. a.out. Node 03. a.out. < sshd / rshd >. s sh / rsh node02 .

roland
Télécharger la présentation

MPI without tight integration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MPI without tight integration Node 01 Node 02 <pbs_mom> tracked session <sshd/rshd> <Job script> #PBS –l select=3:ncpus=2:mpiprocs=2 … … mpirun -hostfile $PBS_NODEFILE a.out a.out <pbs_mom> a.out a.out Node 03 a.out <sshd/rshd> ssh/rsh node02 a.out <pbs_mom> ssh/rsh node03 a.out PBS do not know about processes on nodes 02 and 03 because processes there get generated outside of PBS scope.

  2. MPI with pbs_remsh/pbs_attach Node 02 <sshd/rshd> Node 01 <pbs_mom> tracked session pbs_attach pbs_attach a.out a.out <Job script> #PBS –l select=3:ncpus=2:mpiprocs=2 … … mpirun -r pbs_remsh -hostfile $PBS_NODEFILE a.out <pbs_mom> a.out Node 03 <sshd/rshd> a.out pbs_attach pbs_attach ssh/rsh node02 a.out a.out ssh/rsh node03 <pbs_mom> pbs_remsh (see inside it) launches something like “sshnodeXXpbs_attach –j JOBID a.out”, informing pbs_mom on the machine process a.out being launched belongs to JOBID.

  3. MPI with pbs_tmrsh Node 02 Node 01 a.out <pbs_mom> tracked session <pbs_mom> <Job script> #PBS –l select=3:ncpus=2:mpiprocs=2 … … mpirun -r pbs_remsh -hostfile $PBS_NODEFILE a.out a.out a.out Node 03 a.out a.out pbs_tmrsh node02 <pbs_mom> pbs_tmsh node03 a.out pbs_tmrsh talks directly to pbs_mom, using PBS task management library and a.out processes are launched by pbs_mom directly.

More Related