Venkatesh,
You may also test superlu_dist, which may use less memory.
Hong
On Mon, Jun 22, 2015 at 12:43 PM, Barry Smith wrote:
>
> There is nothing we can really do to help on the PETSc side. I do note
> from the output
>
> REDISTRIB: TOTAL DATA LOCAL/SENT = 328575589 1437471711
>
There is nothing we can really do to help on the PETSc side. I do note from
the output
REDISTRIB: TOTAL DATA LOCAL/SENT = 328575589 1437471711
GLOBAL TIME FOR MATRIX DISTRIBUTION =206.6792
** Memory relaxation parameter ( ICNTL(14) ):35
** Rank of
Hi
I have restructured my matrix eigenvalue problem to see why B is singular
as you suggested by changing the governing equations in different form.
Now my matrix B is not singular. Both A and B are invertible in Ax=lambda
Bx.
Still I receive error in MUMPS as it uses large memory (attached is th
venkatesh,
As we discussed previously, even on smaller problems,
both mumps and superlu_dist failed, although Mumps gave "OOM" error in
numerical factorization.
You acknowledged that B is singular, which may need additional
reformulation for your eigenvalue problems. The option '-st_type sinvert'
It failed due to a lack of memory. "OOM" stands for "out of memory". OOM
killer terminated your job means you ran out of memory.
On Sunday, 31 May 2015, venkatesh g > wrote:
> Hi all,
>
> I tried to run my Generalized Eigenproblem in 120 x 24 = 2880 cores.
> The matrix size of A = 20GB and B =
Sorry the command was:
aprun -n 2880 -N 24 ./ex7 -f1 a110t -f2 b110t -st_type sinvert -eps_nev 1
-st_ksp_type preonly -st_pc_type lu -st_pc_factor_mat_solver_package mumps
-mat_mumps_cntl_1 1e-6 -mat_mumps_icntl_4 2
cheers,
Venkatesh
On Sun, May 31, 2015 at 6:07 PM, venkatesh g
wrote:
> Hi all,
Hi all,
I tried to run my Generalized Eigenproblem in 120 x 24 = 2880 cores.
The matrix size of A = 20GB and B = 5GB.
It got killed after 7 Hrs of run time. Please see the mumps error log. Why
must it fail ?
I gave the command:
aprun -n 240 -N 24 ./ex7 -f1 a110t -f2 b110t -st_type sinvert -eps_n
Thanks. So I what other direct solver I can use for this singular B ? QR is
a good option but what to do ?
I will read the manual on dumping out null space.
Venkatesh
On Fri, May 29, 2015 at 7:42 PM, Hong wrote:
> venkatesh:
>
>> On Tue, May 26, 2015 at 9:02 PM, Hong wrote:
>>
>>> 'A serial j
venkatesh:
> On Tue, May 26, 2015 at 9:02 PM, Hong wrote:
>
>> 'A serial job in MATLAB for the same matrices takes < 60GB. '
>> Can you run this case in serial? If so, try petsc, superlu or mumps to
>> make sure the matrix is non-singular.
>>
> B matrix is singular but I get my result in Petsc an
On Tue, May 26, 2015 at 9:02 PM, Hong wrote:
> 'A serial job in MATLAB for the same matrices takes < 60GB. '
> Can you run this case in serial? If so, try petsc, superlu or mumps to
> make sure the matrix is non-singular.
>
B matrix is singular but I get my result in Petsc and Mumps for small
mat
'A serial job in MATLAB for the same matrices takes < 60GB. '
Can you run this case in serial? If so, try petsc, superlu or mumps to make
sure the matrix is non-singular.
Both mumps and superlu_dist show crash in MatFactorNumeric(). Mumps gives
error
[16]PETSC ERROR: Error reported by MUMPS in num
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