Subject: Re: [ublas] [PATCH 3/3] boost::ublas increasing the range of BLAS level 3 benchmarks
From: Nasos Iliopoulos (nasos_i_at_[hidden])
Date: 2016-03-08 13:22:53
I suppose a define switch to disable the parallelization all together
would be ok right?
-N
On 03/08/2016 01:12 PM, Riccardo Rossi wrote:
>
> Well the problem is that fixed matrices and vectors can not be used if
> you don t know the size at compile time
>
> In my application (finite elements) I have Millons of matrices of size
> around 10by 10 on which I operate within outer openmp loops.
>
> Having openmp in the matrix would be a killer for me
>
> Riccardo
>
> On 7 Mar 2016 18:13, "Nasos Iliopoulos" <nasos_i_at_[hidden]
> <mailto:nasos_i_at_[hidden]>> wrote:
>
> That is correct,
> there are various options here but none is optimal. Do you have
> any suggestions?
>
> Note: we now have fixed_vector and fixed_matrix classes than can
> be used to make compile time decisions with respect to size.
>
>
> -Nasos
>
> On 03/07/2016 11:56 AM, Riccardo Rossi wrote:
>> Hi,
>>
>> just to give my two cents, some care shall be taken so that there
>> is no overhead for very small matrices (say 3*3)
>>
>> cheers
>> Riccardo
>>
>> On Sun, Mar 6, 2016 at 9:58 PM, palik imre
>> <imre_palik_at_[hidden] <mailto:imre_palik_at_[hidden]>> wrote:
>>
>> It just ocured to me, that based on the descriptor struct it
>> would be possible to choose between parallel and serial
>> implementation of the kernels.
>>
>> Anybody would be interested in having something like that in
>> ublas?
>>
>> Would an OpenMP parallel implementation be accepted to the
>> library?
>>
>> Thanks,
>>
>> Imre
>>
>>
>> On Sunday, 6 March 2016, 10:43, palik imre
>> <imre_palik_at_[hidden] <mailto:imre_palik_at_[hidden]>> wrote:
>>
>>
>> Fork is here:
>> https://github.com/imre-palik/ublas/tree/feature/ublas00004_simd_gemm
>>
>> pull request is sent.
>>
>>
>>
>>
>>
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>>
>>
>>
>> --
>>
>> *Riccardo Rossi
>> *
>>
>> PhD, Civil Engineer
>>
>>
>> member of the Kratos Team: www.cimne.com/kratos
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>>
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