[Simnibs-discuss] [UNCLASSIFIED] Unable to install simnibs 4.0

[Oula Puonti]

Hi Aidan,

Can you try the installation guide here:

https://simnibs.github.io/simnibs/build/html/installation/conda.html

Hopefully creating a fresh environment and pip installing simnibs
directly there solves the issue. The final command in the guide,
namely:

pip install -f https://github.com/simnibs/simnibs/releases/latest
simnibs

does not work, please use:

pip install
https://github.com/simnibs/simnibs/releases/download/v4.0.0/environment_win.yml

instead, i.e., pass the full path to the wheel. Once you've done that,
run (while having the simnibs_env activated):

python

import simnibs

and see if that works. 

Not exactly sure what cause the issue, but people have reported similar
problems here:

https://stackoverflow.com/questions/69057590/dll-load-failed-while-importing-arpack-from-scipy-integrate

and here:

https://github.com/conda/conda/issues/6396


Best,
Oula


On Tue, 2023-02-21 at 22:08 +0000, Aidan.Lewis wrote:
> Hi Oula,
>  
> I believe I successfully upgraded the scipy files, but the same error
> still occurred – whether I tried the install wizard or through
> python. See screenshots of the terminal lines of each. Please let me
> know if I have done something wrong.
>  
> Kind regards,
> Aidan
>  
> From: Oula Puonti <oulap at drcmr.dk>
> Sent: Wednesday, 22 February 2023 7:29 AM
> To: Aidan.Lewis <Aidan.Lewis at canberra.edu.au>; discuss at simnibs.org
> Subject: Re: [Simnibs-discuss] [UNCLASSIFIED] Unable to install
> simnibs 4.0
>  
> Hi Aidan,
> 
> Can you try to update scipy by running (in a terminal):
> 
> simnibs_python -m pip install --upgrade scipy
> 
> and then try typing (in a terminal):
> 
> simnibs_python
> 
> import simnibs
> 
> to see if that fixes the issue.
> 
> Best,
> Oula
> 
> 
> On Wed, 2023-02-15 at 23:09 +0000, Aidan.Lewis wrote:
> > Hi Oula,
> >  
> > Thank you for your response. That’s correct – 3.2 simnibs
> > successfully uninstalled and no files remain on my computer and I
> > used the most recent installer available on the website.
> >  
> > My laptop is a Dell with an Intel® Core i7 v Pro. I am running
> > Windows 10 Enterprise. It is a work laptop that is owned by
> > University of Canberra (but please note I was still able to install
> > 3.2 simnibs on this same laptop).
> >  
> > From: Oula Puonti <oulap at drcmr.dk>
> > Sent: Thursday, 16 February 2023 3:39 AM
> > To: Aidan.Lewis <Aidan.Lewis at canberra.edu.au>;discuss at simnibs.org
> > Subject: Re: [Simnibs-discuss] [UNCLASSIFIED] Unable to install
> > simnibs 4.0
> >  
> > Hi Aidan,
> > 
> > Looks like you might be missing some scipy-specific libraries. 
> > 
> > Just to be sure: you don't have any old versions of simnibs lying
> > around (probably not the case as you said you managed to
> > uninstall),
> > and you're a clean install of the new version with the installer
> > downloaded from the website?
> > 
> > Could you also provide us with the details of the computer and
> > operating system you're trying to install simnibs on? Is it a
> > personal
> > computer (desktop/laptop) or a server?
> > 
> > Thanks,
> > Oula
> > 
> > 
> > On Wed, 2023-02-15 at 02:10 +0000, Aidan.Lewis wrote:
> > > Hello,
> > >  
> > > I have recently tried to upgrade from Simnibs 3.2 to 4. I
> > > successfully uninstalled 3.2, but an error message pops up in the
> > > final parts of installation. Please find attached my install log.
> > > I
> > > believe it has something to do with _arpack. Your assistance is
> > > greatly appreciated.
> > >  
> > > Kind regards,
> > > Aidan
> > >  
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