Search found 196 matches
- 02 Feb 2016, 15:10
- Forum: HPC
- Topic: Multithreading
- Replies: 1
- Views: 7095
Multithreading
Hi everybody, i was wondering if there is an example of the omp capabilities within elmer. Or is there even an overview somehwere. When i interpret the code fragments throughout the solvers in the rigth way then: 1)for now the multithreading is applied to matrix assembly only 2) the multithreading i...
- 02 Feb 2016, 13:01
- Forum: Updates
- Topic: Elmer version 8.1. is out
- Replies: 5
- Views: 11950
Re: Elmer version 8.1. is out
Hello, i would like to contribute to the GPU discussion above. The solver package "paralution", that works on many backlends including GPUs, has an explicit elmer interface. Do you guys know about that? i didnt try it out with elmer . But the solver itself is fast and handy. best regards F...
- 26 Nov 2015, 12:27
- Forum: ElmerSolver
- Topic: Matrix Entry that belongs to two partitions
- Replies: 1
- Views: 1697
Matrix Entry that belongs to two partitions
Hello, we are facing an issue with matrix entries that should connect two nodes that might possibly be part of different partitions. My questions are: 1) Generally, is the whole system matrix accesible in parallel? In other words can i somehow acces entry i,j where i is the global row of a node (its...
- 06 Nov 2015, 14:29
- Forum: ElmerSolver
- Topic: Higher order Elements
- Replies: 0
- Views: 2205
Higher order Elements
Hello dear Elmer Community, i have questions regarding the use of higher order elements. THe situation is the following: the mesh is created with salome and consists of linear tets and wedges. The wedges form a boundary layer at the boundary of concern. i would like to use the "Element=p:2"...
- 04 Nov 2015, 17:25
- Forum: ElmerSolver
- Topic: Question about dBasisdx
- Replies: 6
- Views: 3775
Re: Question about dBasisdx
hi peter, i actually want to set a constraint to a bc flux that is dependent on some variables Think of poissons equation. The flux "permittivity \nabla phi" at the boundary is equivalent to the charge at the bc. And in many situations this charge has to be equivalent to the charge in the ...
- 04 Nov 2015, 16:34
- Forum: ElmerSolver
- Topic: Question about dBasisdx
- Replies: 6
- Views: 3775
Re: Question about dBasisdx
Thanks for the reply to this. Can anybody think of a way how i can evaluate the parent element gradients on the boundary elements gauss points? i can always get teh parent element and evaluate the elementinfo on it but here i have the problem that again the gauss point local coordinates of the bc el...
- 15 Sep 2015, 16:25
- Forum: ElmerSolver
- Topic: Question about dBasisdx
- Replies: 6
- Views: 3775
Question about dBasisdx
Hello deart Elmer community, i was wondering about the dBasisdx values, that most ElmerSolver get from the ElementInfo function as something like stat = ElementInfo( Element, Nodes, IP % U(t), IP % V(t), IP % W(t), detJ, Basis, dBasisdx ) . When i call this for a boundary element in a 3d simulation,...
- 31 Aug 2015, 12:49
- Forum: Bug reports
- Topic: Problem with disjoint Subdomains in parallel
- Replies: 0
- Views: 3989
Problem with disjoint Subdomains in parallel
Hello, i think i found a bug when dealing with disjoint subdomains in parallel. I attach a minimal example to show the problem. In the example there is a box domain in which 10 non touching spheres are enclosed. I partitioned that with ElmerGrid and the "-metis 4 3" optiion. In the example...
- 20 Aug 2015, 11:33
- Forum: Software development
- Topic: INclude Path for my Solvers
- Replies: 1
- Views: 3885
INclude Path for my Solvers
Hi there, i recently started to order my projects and i set up a nice little directory tree. ONe directory for solvers, one for UDF and another for sif files. Now, is there a way where i can tell the sif file to include a directory when it searches for the procedures? So that i dont have to give ful...
- 13 Aug 2015, 18:11
- Forum: ElmerSolver
- Topic: Integral COnstraint for single Solver
- Replies: 12
- Views: 9785
Re: Integral COnstraint for single Solver
Okay also without using the invperm i managed to make this work sor a serial run. In parallel it doesnt do the same thing though. It runs through but somehow the integral condition has a wrong effect. so i add the entries for all partitions in row number one and i add to rhs entry number one. i am r...