Hello everyone!! I am a new to liggghts and have installed and successfully running my simulation. The only issue is that liggghts uses 1 by 1 by 1 mpi grid set up even though I give command mpirun -np 8 .................
I am using Ubuntu 18.04 on a 12 logical core system. Someone please help.
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mschramm | Fri, 05/21/2021 - 15:22
log file or script and build process
Hello,
Could you post your log file/input script or a minimum working example?
I have not run into this problem.
Also, you may wish to only give liggghts physical cores. Our lab saw a speed improvement by turning off hyper threading and only giving LIGGGHTS the number of physical cores.
pawandubey | Fri, 05/21/2021 - 20:09
Thanks for your reply. I have
Thanks for your reply. I have attached a screenshot of the terminal when I run my simulation. You can see the grid division is 1 by 1 by 1 even though I have used 8 cores in the running command.
pawandubey | Fri, 05/21/2021 - 20:15
Screenshot
Sorry I am new to forum and could not find how to attach a file. I am posting the terminal lines here.
mpirun -np 8 lmp380 -in in.insertpack
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
Reading STL file 'Meshes/Substrate.stl' (mesh processing step 1/3)
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
Reading STL file 'Meshes/Substrate.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Scrapper.stl' (mesh processing step 1/3)
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
Reading STL file 'Meshes/Scrapper.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Substrate.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Extrudeone.stl' (mesh processing step 1/3)
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
Reading STL file 'Meshes/Substrate.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Extrudeone.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Scrapper.stl' (mesh processing step 1/3)
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2021-05-10-12:11:00 by aragorn, git commit 3b38a7dbe22018f905d4c5f792ab5ce644ef594e)
Reading STL file 'Meshes/Extrudetwo.stl' (mesh processing step 1/3)
Created orthogonal box = (-0.055 -0.03 -0.045) to (0.055 0.03 0.1)
1 by 1 by 1 MPI processor grid
Reading STL file 'Meshes/Substrate.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Extrudetwo.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Scrapper.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Extrudeone.stl' (mesh processing step 1/3)
Reading STL file 'Meshes/Extrudethree.stl' (mesh processing step 1/3)