Hi Dmitry, I only have --use-petsc-dm --vi -snes_type vi(r/s)s . this is the latest code downloaded from the svn. I am able to make miscellaneous ex 7 properly. Thanks, Subramanya
----- Original Message ----- From: "Dmitry Karpeev" <[email protected]> To: "Subramanya Gautam Sadasiva" <[email protected]> Sent: Monday, August 20, 2012 10:36:24 PM Subject: Re: [Libmesh-users] Petsc SNES VI doesn't seem to be working. Can you tell me exactly what command-line options you are using? Thanks. Dmitry. On Mon, Aug 20, 2012 at 9:34 AM, Subramanya Gautam Sadasiva < [email protected] > wrote: HI Dmitry, I have tried with both virs and viss and it gives me the same result.I have not specified any thing for the linear solver, but snes-view tells me that it is using gmres. There is no reduction in the residual and the code exits to the next time step without doing anything. Subramanya ----- Original Message ----- From: "Dmitry Karpeev" < [email protected] > To: "Subramanya Gautam Sadasiva" < [email protected] > Cc: "." < [email protected] > Sent: Monday, August 20, 2012 12:41:08 AM Subject: Re: [Libmesh-users] Petsc SNES VI doesn't seem to be working. What options (libMesh and solver) are you running with? Dmitry. On Mon, Aug 20, 2012 at 2:06 AM, Subramanya Gautam Sadasiva < [email protected] > wrote: Hi, I am trying to modify the code in Miscellaneous ex 7 to solve the cahn hilliard problem with c0 elements, and I don't seem to be having any luck getting it to work, the solver only does one residual computation and moves on to the next time step. Has anybody seen a similar issue with this? It also shows no reduction in the residual. It is the same matrix as the one solved in the petsc example 54, in the petsc snes examples. THanks, Subramanya ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
