[TRNSYS-users] TRNSYS FMU issue

[David BRADLEY]

the FMU is 32-bit and does not work with the 64-bit version of Trnsys18. 
A 32-bit version of Trnsys is available. You can contact your 
distributor if you want to explore that option.

kind regards,

  David


On 2/2/2023 12:44 PM, Amirreza Heidari via TRNSYS-users wrote:
> Hello,
> Thanks for your reply. I installed Python32bit on my 64bit system and 
> tried to install pyfmi library but I got several errors that could not 
> be solved at the end. By the way, my TRNSYS version is 18, does 
> the FMU tool work with the 18 version? If not, would you please let me 
> know if there is any alternative way to speed up the co-simulation 
> between Python and TRNSYS?
> Thank you
>
> **
>
>
>
>
>
>
> On Thu, Feb 2, 2023 at 9:47 AM Widl Edmund via TRNSYS-users 
> <trnsys-users at lists.onebuilding.org> wrote:
>
>     Hi,
>
>     The generated FMU should work on Windows 10 without problems.
>
>     Most likely the issue is the compatibility of the generated FMU
>     with the Python version you are using. Because TRNSYS 17 is a
>     32-bit application, the FMU’s binary is also a 32-bit. For this
>     reason, you will also have to use a 32-bit version of Python,
>     otherwise the FMU import will not work.
>
>     I am not sure if there is a pyfmi version available for 32-bit
>     Python. An alternative would be to use an older release of Python
>     (version 3.6) and package fmipp (version 1.4, see [1]) for
>     importing and handling the FMU.
>
>     Best regards,
>
>     Edmund
>
>     [1] https://pypi.org/project/fmipp/1.4/
>
>     *From:* TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org>
>     *On Behalf Of *Amirreza Heidari via TRNSYS-users
>     *Sent:* Mittwoch, 1. Februar 2023 19:33
>     *To:* TRNSYS users mailing list at OneBuilding.org
>     <TRNSYS-users at lists.onebuilding.org>
>     *Cc:* Amirreza Heidari <amirrezaheidarysbu at gmail.com>
>     *Subject:* [TRNSYS-users] TRNSYS FMU issue
>
>     Hello,
>
>     I have exported an FMU file from my TRNSYS model to be used in
>     Python with pyfmi library. When I want to import it in the Python
>     code I get the error "/The FMU could not be loaded. Error loading
>     the binary". /In the documentation of FMU generator it is written
>     that it is compatible with windows 7. Does this error mean that
>     this tool does not work with windows 10? Is there any other
>     alternative to make FMU from TRNSYS model?
>
>     Alternatively, is three any other method to speedup the TRNSYS
>     co-simulation from Python? At the moment I am using subprocess to
>     overwrite .back file, which is extremely slow.
>
>     Regards
>
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>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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