[petsc-dev] boomerAmg scalability

[Mark F. Adams]

This seems to be dying earlier than it was last week, so it looks like a new bug in MatTransposeMatMult.

Mark

On Jan 11, 2012, at 1:59 PM, Matthew Knepley wrote:

> On Wed, Jan 11, 2012 at 12:23 PM, Ravi Kannan <rxk at cfdrc.com> wrote:
> Hi Mark,
> 
>  
> 
> I downloaded the dev version again. This time, the program crashes even earlier. Attached is the serial and parallel info outputs.
> 
>  
> 
> Could you kindly take a look.
> 
> 
> It looks like this is a problem with MatMatMult(). Can you try to reproduce this using KSP ex10? You put
> your matrix in binary format and use -pc_type gamg. Then you can send us the matrix and we can track
> it down. Or are you running an example there?
> 
>   Thanks,
> 
>     Matt
> 
>  
>  
> Thanks,
> 
> Ravi.
> 
>  
> 
> From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at mcs.anl.gov] On Behalf Of Mark F. Adams
> Sent: Monday, January 09, 2012 3:08 PM
> 
> 
> To: For users of the development version of PETSc
> Subject: Re: [petsc-dev] boomerAmg scalability
> 
>  
> 
> Yes its all checked it, just pull from dev.
> 
> Mark
> 
>  
> 
> On Jan 9, 2012, at 2:54 PM, Ravi Kannan wrote:
> 
> 
> 
> 
> Hi Mark,
> 
>  
> 
> Thanks for your efforts.
> 
>  
> 
> Do I need to do the install from scratch once again? Or some particular files (check out gamg.c for instance)?
> 
>  
> 
> Thanks,
> 
> Ravi.
> 
>  
> 
> From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at mcs.anl.gov] On Behalf Of Mark F. Adams
> Sent: Friday, January 06, 2012 10:30 AM
> To: For users of the development version of PETSc
> Subject: Re: [petsc-dev] boomerAmg scalability
> 
>  
> 
> I think I found the problem.  You will need to use petsc-dev to get the fix.
> 
>  
> 
> Mark
> 
>  
> 
> On Jan 6, 2012, at 8:55 AM, Mark F. Adams wrote:
> 
> 
> 
> 
> 
> Ravi, I forgot but you can just use -ksp_view_binary to output the matrix data (two files).  You could run it with two procs and a Jacobi solver to get it past the solve, where it writes the matrix (I believe).
> 
> Mark
> 
>  
> 
> On Jan 5, 2012, at 6:19 PM, Ravi Kannan wrote:
> 
> 
> 
> 
> 
> Just send in another email with the attachment.
> 
>  
> 
> From: petsc-dev-bounces at mcs.anl.gov [mailto:petsc-dev-bounces at mcs.anl.gov] On Behalf Of Jed Brown
> Sent: Thursday, January 05, 2012 5:15 PM
> To: For users of the development version of PETSc
> Subject: Re: [petsc-dev] boomerAmg scalability
> 
>  
> 
> On Thu, Jan 5, 2012 at 17:12, Ravi Kannan <rxk at cfdrc.com> wrote:
> 
> I have attached the verbose+info outputs for both the serial and the parallel (2 partitions). NOTE: the serial output at some location says PC=Jacobi! Is it implicitly converting the PC to a Jacobi?
> 
>  
> 
> Looks like you forgot the attachment.
> 
>  
> 
>  
> 
>  
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> 
> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener

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