Re: [Cppqed-support] C++QED system size limit?

[Wojciech K. <woj...@ph...>]

Dear Raimar,

I changed the value by its #define everywhere where it appeared (in 
TMP_Tools.h in CPPQEDcore/utils and there are also two blitz.h headers 
with this definition)  and I recompiled everything. Didn't work.

Has anybody ever used C++QED to simulate a system with more than 5 
components? I think that's my problem here as adding an additional 
interaction to wrap around and create a periodic lattice (instead of 
adding a new site) compiles and runs smoothly.

Cheers,
Wojciech

On 24/04/14 13:33, Raimar Sandner wrote:
> Dear Wojciech,
>
> thanks for your feedback!
>
> How did you set BLITZ_ARRAY_LARGEST_RANK, as a #define or as a -D compiler
> flag? It has to be set before any blitz header is included.
>
> I think also C++QED itself has to be recompiled with this new value, not only
> the script, probably András can explain the details better. He is the one that
> implemented this feature in blitz and I have not used it yet :)
>
> Currently I am traveling and cannot check my emails regularly. Maybe András
> will get in touch with you soon, otherwise I will have a closer look at the
> problem next week.
>
> Cheers
> Raimar
>
> On Thursday, April 24, 2014 12:19:41 Wojciech Kozlowski wrote:
>> Hi,
>>
>> I've recently tried using C++QED for my own research which is a Bose
>> Hubbard lattice model coupled to a cavity. I've implemented the actual
>> BHM elements already (which are simply site elements coupled with a
>> tunnelling interaction element between nearest neighbours), but I've
>> encountered an obstacle when I try to make the system larger than 5
>> sites - it fails to compile. I've attached the compiler error output to
>> this e-mail. My own attempt to try and solve this problem got me to the
>> BLITZ_ARRAY_LARGEST_RANK value, but changing it to a higher value did
>> not solve the problem. Does C++QED have a very limited system size? I
>> hope there's a workaround as at the moment it's the best tool that I
>> found for what I need.
>>
>> Cheers,
>> Wojciech
>
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