[petsc-users] Load binary matrix created in parallel

[Y. Shidi]

Hello,

> Is your claim that you do
> 
>   MatView()
I did not call this function; I called MatLoad() directly.

> and get a different matrix? This is unlikely since we test this.
> Are you sure you have the same rhs?
I will check this again.
So if a binary matrix file is created,
it doesn't matter if different number of processors is used.

Thanks,
Shidi

On 2018-05-23 16:48, Matthew Knepley wrote:
> On Wed, May 23, 2018 at 11:45 AM, Y. Shidi <ys453 at cam.ac.uk> wrote:
> 
>> Hi,
>> 
>>> How are you evaluating?
>> I put the loaded matrix to a linear system and solve it.
> 
> Is your claim that you do
> 
>   MatView()
> 
> and then
> 
>   MatLoad()
> 
> and get a different matrix? This is unlikely since we test this.
> Are you sure you have the same rhs?
> 
>   Thanks,
> 
>     Matt
> 
>> Cheers,
>> Shidi
>> 
>> On 2018-05-23 16:42, Jed Brown wrote:
>> "Y. Shidi" <ys453 at cam.ac.uk> writes:
>> 
>> Hello,
>> 
>> Is there any way to sequentially load a binary matrix file, which
>> is created in parallel?
>> I tried to use PetscViewerBinaryOpen() and MatLoad() to load
>> the matrix that is created by using 2 cores, and solved a linear
>> system by using this matrix but the results is not correct.
>> 
>> How are you evaluating?
> 
> --
> 
> 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
> 
> https://www.cse.buffalo.edu/~knepley/ [1]
> 
> 
> Links:
> ------
> [1] http://www.caam.rice.edu/~mk51/