I need to use the kspsolve(A,b,x) repeatly in my code in the following style.
but i have noticed from the system load monitor that during the code running,
it allocate new memeory every step.
I use the default setting for the PC.
Could you please told me how to resolve this problem.
for (
I have forwarded this to the pflotran developer who uses developer studio,
hopefully he will be able to answer your questions.
Barry
On Jul 31, 2013, at 6:35 PM, Danyang Su wrote:
> Hi All,
>
> I am currently developing codes under Windows utilizing intel visual fortran
> + visual st
i get the infor from the system load monitor
在 2013-07-31 23:36:38，"Jed Brown" 写道：
>丁老师 writes:
>
>> I write a FVM code for the convection diffusion problem on a 2D
>> cartesian grid. the code can run correctly with a grid of
>> 720*720. and it use only 26% of the system memory(8G) durin
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind
On Jul 31, 2013, at 10:56 AM, Jed Brown wrote:
> wadud.m...@awe.co.uk writes:
>
>> Hello,
>>
>> I have built PETSc 3.4.2 with MVAPICH2 1.9b and my application code
>> crashes when I spawn it with 16 processes; it works with 4 and
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind
On Jul 31, 2013, at 7:46 AM, 丁老师 wrote:
> I write a FVM code for the convection diffusion problem on a 2D cartesian
> grid.
> the code can run correctly with a grid of 720*720. and it use only 26% of the
> system memory(8G) during
On Jul 31, 2013, at 7:55 AM, 丁老师 wrote:
> Does the function VecScatterCreateToZero resolve this problem?
>
What problem? I told you how to do it, there is no problem.
VecScatterCreateToZero() moves ALL values to process 0 which for large problems
is not scalable, so if you only want som
wadud.m...@awe.co.uk writes:
> Hello,
>
> I have built PETSc 3.4.2 with MVAPICH2 1.9b and my application code
> crashes when I spawn it with 16 processes; it works with 4 and 8
> processes. This occurs at the MatAssemblyEnd subroutine when the
> non-local values are broadcast to other processes. H
Hello,
I have built PETSc 3.4.2 with MVAPICH2 1.9b and my application code crashes
when I spawn it with 16 processes; it works with 4 and 8 processes. This occurs
at the MatAssemblyEnd subroutine when the non-local values are broadcast to
other processes. Has anyone else had issues with MVAPICH
Olivier Bonnefon writes:
> Hello,
>
> You are right. I have to define the Jacobian function of the variational
> formulation. I'm using snes and the petsFem struc (like in ex12).
>
> I need some information about the petscFem struct. I didn't find any
> document about that, is there one ?
>
> T
丁老师 writes:
> I write a FVM code for the convection diffusion problem on a 2D
> cartesian grid. the code can run correctly with a grid of
> 720*720. and it use only 26% of the system memory(8G) during its
> running.
How are you testing the total application memory usage?
> but if i increase
Hoang Giang Bui writes:
> Hi
>
> I want to consult the optimized way to allocate the mpiaij matrix for
> FEM application. Typically, elements in each process contribute to
> global matrix partially, therefore in each process I can define the
> number of nonzeros in according row locally but no
Hello,
You are right. I have to define the Jacobian function of the variational
formulation. I'm using snes and the petsFem struc (like in ex12).
I need some information about the petscFem struct. I didn't find any
document about that, is there one ?
The field f0Funcs is used for the term \
Does the function VecScatterCreateToZero resolve this problem?
At 2013-07-31 09:08:26,"Barry Smith" wrote:
>
>
> create an IS with the global indices you want on process 0 and a seq Vec of
> the same size,
>
> create an IS of size 0 on all the other processes and a seq Vec of the size
I write a FVM code for the convection diffusion problem on a 2D cartesian grid.
the code can run correctly with a grid of 720*720. and it use only 26% of the
system memory(8G) during its running.
but if i increase the grid to 800*800, it gives me the following error? could
you please give me some
Hi,
Thanks a lot. The serial version is working fine now. It will take a while
until I can try the parallel one.
Thanks,
Tillmann Kubis
Tillmann Kubis, PhD
Research Assistant Professor
Network for Computational Nanotechnology
207 S Martin Jischke Drive
Purdue
Hi
I want to consult the optimized way to allocate the mpiaij matrix for
FEM application. Typically, elements in each process contribute to
global matrix partially, therefore in each process I can define the
number of nonzeros in according row locally but not globally. Is there
method in pets
El 31/07/2013, a las 12:03, Heikki Virtanen escribió:
> Hi, Sorry to bother you, but I still have problems with MATMPIBAIJ matrices.
> It is said here
>
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatCreateBAIJ.html
>
> that these matrices are created using block compress
> El 29/07/2013, a las 14:54, Heikki Virtanen escribió:
>
> > Hi, I try to solve an eigenvalue problem (Ax = lambda B x) where A
> > and B are complex matrices. Unfortunately, my data structures
> > are not capable of handling directly complex numbers, yet. So,
> > I have to use
> >
> >
18 matches
Mail list logo
