dolfin team mailing list archive

[Dag Lindbo <dag@xxxxxxxxxx>]

Hello! (I've been out of e-mail range for a week)

I've posted some results on the wiki (and I actually have MTL4 :-) )
where I just show total assembly times with and without optimization
turned on. MTL4 responds quite well to -O3 (unlike uBLAS).

As far as the MTL4 backend goes, I have implemented and tested almost
all the operators and member functions. We are running into some quirks
with namespaces in MTL4 which Peter G is going to sort out. Also, there
is a bug somewhere in the version of the backend currently in place --
so please don't use it without manually initializing matrix dimensions.

I will sort this out in a day or two and then have a bundle ready that
finalizes the MTL4 backend. The performance results have been
encouraging enough to keep me (and Garth) motivated to get this backend
ready for "real" use.

/Dag

Ilmar Wilbers wrote:
> Yeah, that would be the case for me as well. I forgot about installing MTL4.
> 
> ilmar
> 
> Garth N. Wells wrote:
>> Anders Logg wrote:
>>   
>>> I suspect the problem is I don't have MTL4 installed on my desktop so
>>> it defaults to uBlas for me. I don't have time to check now but will
>>> check later. So, don't trust my results for MTL4 just yet.
>>>
>>>     
>> I didn't know that it fell back to a default backend.
>>
>>   
>>> We should probably issue an error when the backend is not available.
>>>
>>>     
>> Yes, or at least a warning.
>>
>> Garth
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>>   
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