Are you guys compiling from source or is this a ports install. Ports just gives me an error saying command execution failed.
> From: [email protected] > Date: Sun, 14 Jul 2013 11:13:35 -0500 > To: [email protected] > CC: [email protected]; [email protected] > Subject: Re: [petsc-users] [Libmesh-users] Really Really Really Weird SNES > behaviour > > > On Jul 14, 2013, at 11:00 AM, Cody Permann <[email protected]> wrote: > > > It's not guaranteed to work on 10.8 and above. > > It prints a message saying it is not guaranteed to work, but I use it and > it seems to work. It certainly finds "some" problems and doesn't "seem" to > find problems that are not there. So, maybe not perfect but still helpful, > much better than not using it. > > Barry > > > If you have an older OS, it's fine. > > > > Sent from my iPhone > > > > On Jul 14, 2013, at 9:59 AM, Dmitry Karpeyev <[email protected]> wrote: > > > >> Are there known problems with valgrind for macos? > >> I have it installed from macports and it seems to work fine. > >> Dmitry. > >> > >> > >> On Sun, Jul 14, 2013 at 7:26 AM, Cody Permann <[email protected]> > >> wrote: > >> Sounds like a memory corruption problem. I know several users that are > >> experts at writing code like that. > >> > >> Unfortunately, it can be difficult to track down on OS X due to a lack > >> of working memory analysis tools. > >> 1. Since this problem popped up after you changed your initial > >> condition, you may just want to start by carefully looking at your > >> code and thinking about cases where your variables might not be > >> initialized, or where calculations could potentially produce underflow > >> or overflow conditions. > >> 2. If you have access to a Linux box, then you will have bounds > >> checked STL containers at your disposal in debug mode. You'll also be > >> able to run your code through valgrind. Both of those operations are > >> relatively easy to perform. Let us know if you have any questions. > >> > >> Cody > >> > >> Sent from my iPhone > >> > >> On Jul 13, 2013, at 11:17 PM, subramanya sadasiva <[email protected]> > >> wrote: > >> > >> > Hi, I am observing some really really really weird SNES behavior in my > >> > SNESVI code called through Libmesh. This behaviour appeared after I > >> > changed some initial conditions and only happens in an optimized build. > >> > I am running this code on a Macbook pro running os x 10.8.. > >> > When the debug code is run, the residuals computed for the initial > >> > conditions provided give norms which are of the expected magnitude.. so > >> > the SNES_Monitor output is, > >> > solving the cahn hilliard time step 0 SNES Function norm > >> > 8.223262421671e-01 1 SNES Function norm 3.793806858333e-03Nonlinear > >> > solve did not converge due to DIVERGED_MAX_IT iterations 1 > >> > The output from SNES_Monitor with the optimized code on the other hand > >> > is, > >> > solving the cahn hilliard time step 0 SNES Function norm > >> > 5.153882032022e+19 1 SNES Function norm 1.446612980133e+19Nonlinear > >> > solve did not converge due to DIVERGED_MAX_IT iterations 1 > >> > > >> > Absolutely nothing else has changed in the code except that one code is > >> > built with a debugging and one with an optimized version of the code. > >> > Any ideas?Subramanya > >> > ------------------------------------------------------------------------------ > >> > See everything from the browser to the database with AppDynamics > >> > Get end-to-end visibility with application monitoring from AppDynamics > >> > Isolate bottlenecks and diagnose root cause in seconds. > >> > Start your free trial of AppDynamics Pro today! > >> > http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk > >> > _______________________________________________ > >> > Libmesh-users mailing list > >> > [email protected] > >> > https://lists.sourceforge.net/lists/listinfo/libmesh-users > >> > >> > ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
