[Libmesh-users] [Fwd: Re: The problem of periodic boundaries with DG code!]

-- Gas Turbine Research Center email: luy...@mails.tsinghua.edu.cn -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest in

[Libmesh-users] The problem of periodic boundaries with DG code!

aries" is private in the class DofMap? Best regards! luyi -- Gas Turbine Research Center email: luy...@mails.tsinghua.edu.cn -- Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gatherin

[Libmesh-users] about period boundary_id

Hi, Roy, there is a problem: in class BoundaryInfo, the boundary_id type is "short int", but in class PiriodicBoundary , the type is "unsigned int"? why? Best Regards! luyi 2008-11-13 > Roy Stogner <[EMAIL PROTECTED]> -- Gas Turbine Research C

[Libmesh-users] About JFNK method!

to implement? Just without this command? Best regards! Luyi -- Gas Turbine Research Center email: [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest L

Re: [Libmesh-users] about conjugate heat transfer problem

在 2008-08-01五的 08:00 -0500，Roy Stogner写道： > On Fri, 1 Aug 2008, luyi wrote: > > > Because I want to use Jacobian_free Newton_Krylov method to solve the > > problem, if I setup two EquationSystems for each domain, I will get two > > rhs and connect them, with a matrix_free

Re: [Libmesh-users] about conjugate heat transfer problem

suggestions about this? Do I need to write a JFNK_systems inherit from the class "explicit_system"? Thank you very much! Best regards! Luyi 在 2008-07-31四的 08:09 -0500，Roy Stogner写道： > moment I think the answer is "not efficiently". Although our > meshes can be flagged with

[Libmesh-users] about conjugate heat transfer problem

nd the rhs together, can I using only one EquationSystems and one mesh to implement this? Best regards! Luyi -- Gas Turbine Research Center email: [EMAIL PROTECTED] - This SF.Net email is sponsored by the Moblin Your Move D

Re: [Libmesh-users] about the long time for the assemble of first step!

is situation > and handling it automatically. > -Ben > > > *From:* [EMAIL PROTECTED] on behalf of Roy > Stogner > *Sent:* Sun 5/11/2008 10:31 PM > *To:* luyi > *Cc:* libmesh-users@lists.sourceforge.net &g

Re: [Libmesh-users] about the long time for the assemble of first step!

basis, CONSTANT and FIRST is OK but SECOND can not work. I will change my implicit code to monomial later and connect you. My code solve euler equation and I am trying to solve NS equaiton later. Best Regards! Luyi Lorenzo Botti 写道: > 2008/5/14 luyi <[EMAIL PROTECTED]>: > > &

Re: [Libmesh-users] about the long time for the assemble of first step!

aster. Can libmesh run without PETSC but only with mpi? I'd like to send a DG example after several days, libmesh is a so excellent library and thank you for your kindly reply. Best regards! Luyi 2008-5-14 Roy Stogner 写道: > > On Tue, 13 May 2008, luyi wrote: > >> The CONSTA

[Libmesh-users] GMRES solver

get the same result. Can you give some suggestion about this? Can libmesh run well without PETSC but only mpi? Thank you very much! Luyi 2008-5-13 - This SF.net email is sponsored by: Microsoft Defy all challenges

Re: [Libmesh-users] about the long time for the assemble of first step!

The CONSTANT basis for both implicit and RK is OK but higher order need much more time because I use elem-based basis, maybe the problem is this? Thank you very much and Best regards! Luyi Kirk, Benjamin (JSC-EG) 写道: > Can you try running the code with --implicit_neighbor_dofs on

Re: [Libmesh-users] About the long time cost of the first step!

| -- no neighbor matrix here. The CONSTANT and FIRST basis works fast and I can get the right result for euler equation. Thank you very much! Luyi John Peterson 写道: > Hi, > > Could you possibly resend the timing res

Re: [Libmesh-users] about the long time for the assemble of first step!

there is the same problem? Thank you very much! Luyi Kirk, Benjamin (JSC-EG) 写道: > Can you try running the code with --implicit_neighbor_dofs on the > command line? > By default the matrix sparsity is computed assuming continuous shape > functions, but for a DG forumation this i

[Libmesh-users] How to check whether I preallocating the sparse matrix with the correct sparsity pattern?

us about that when you run the SUPG programme with millions dofs how to deal with this? Thank you very much! Luyi 2008-5-12 - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this yea

[Libmesh-users] About the long time cost of the first step!

Hello, I make a DG programme on libmesh, there is a problem that the first step takes so long when I use high order basis, the performance log is as follow: -- | Matrix Assembly Performance: Alive time=683.179, Active tim

[Libmesh-users] about the long time for the assemble of first step!

the first step cost? thank you! Luyi - This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code

[Libmesh-users] install problem in Ubuntu8.04

return 1 make[1]: *** [ex0-opt] return 1 make[1]: Leaving directory `/home/cfd/Library/libmesh/examples/ex0' make: *** [examples] return1 The mpi library used by PETSc have be changed to openmpi, I change the compiler using /configure --with-cxx=m

[Libmesh-users] question about petsc_nonlinear_solver

rations, 0.); > } it seems that stopping tolerance and maxiter are not used here when the PETSc vision >2.3.0 , why? Because no SNESSETFormOptions(snes) here, so I can't set the ksp type, precondition type, at one time I don't know what is the default setting? Maybe GMRES and Block