Hi Akash
An update on this bug. I found that it appears on my Ubuntu 12.04 64-bit
machine, but *not* on my Ubuntu 12.04 32-bit machine. So it's possible
that this could be related to one of our most hard-to-solve (and very
intermittent) bugs, http://ascend4.org/b564. This example model of yours
is an even simpler test case than the last one, so I am optimistic that
we my be able to track down this bug at last!
As well as not crashing via the simplified 'runqrslv' driver, your model
also now works fine under 32-bit in the PyGTK GUI. So it's clearly not a
GUI-related problem.
As far as development of your models goes, I can therefore only suggest
for the moment that you try to do your development on a 32-bit version
of Linux (eg in a VM if necessary). Hope that's not too inconvenient to
do that. I'll be doing my best to fix this tricky bug as soon as possible.
Cheers
JP
On 26/03/15 14:12, John Pye wrote:
> Hi Akash
>
> Thanks very much for your contributions. When I open firstly your
> 'eos' model, I get a window showing that there are errors in that
> file. ASCEND doesn't crash, but it is apparent to me that there is
> some glitch/bug being revealed, since there are multiple entries in
> the 'errors/warnings' pane at the bottom of the window, but no text is
> visible. This suggests some issues with our 'error reporter' module,
> which we have seen before but which I thought had been resolved.
>
> A rather unsatisfying way to see some diagnostic output, to work
> around this GUI issue for your immediate needs, is through use of the
> attached mini-driver for ASCEND, which will output your parser errors
> to the console. I place this file in the top-level folder in ASCEND,
> and compile it using
> gcc -orunqrslv runqrslv.c -lascend
> then run it using
> ./runqrslv ~/ascend-steam-reformation/akash_eos.a4c
> I have added this "runqrslv.c" file to the trunk of our repository,
> for easy access. If I see any bugs in it, I'll fix them there.
>
> After making some fixes to your syntax, I'm afraid I'm still getting a
> segfault using the above method however. It will require a little more
> looking to figure out what the problem is there.
>
> Cheers
> JP
>
>
> On 26/03/15 11:11, Akash Deep Singhal wrote:
>> Hello John,
>>
>> As you asked for the modeling of process of steam methane reformation
>> in ASCEND, I have done that and the complete model can be seen found
>> at https://github.com/akigupta131/ascend-steam-reformation
>> Also the documentation for the same can be seen
>> at
>> https://docs.google.com/document/d/1XMvgZq-kiQaB27iSpOvbnnO875I_VII0BvBUnPTLNls/edit?usp=sharing
>>
>> I have some doubts though:-
>> a. I can't run any of eos files. On running any of them, ascend
>> window suddenly crashes and the command line gives segmentation fault
>> (which got to know occurs when the program access some segment which
>> it is not supposed to do.)
>>
>> b. I have included /akash_eos.a4c/ file in the
>> /steam_reformation.a4c/ file. But the error log states that it could
>> not find the file (tried changing permissions of file. still the same)
>>
>> Please help and comment if you find something wrong.
>>
>> Thank you,
>> Akash
>> ᐧ
>>
>> On Wed, Mar 18, 2015 at 1:15 AM, Akash Deep Singhal
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> Hello John,
>>
>> Thank you for the detailed reply. I also think that
>> introducing/developing some ChemE based models would be great
>> idea. For now, I am working on Ammonia synthesis flowsheet. I
>> will post it soon.
>>
>> About my MTech research:-
>> For the initial stage, there is not much of support available for
>> openmodelica on ARM devices so we are trying to fix the repos to
>> get it working on it. After that, the work is to get the core
>> thermodynamics libraries of DWSIM+Cape Open and integrate them
>> with openmodelica.
>> More about the topic can be seen here
>> :-
>> http://www.che.iitb.ac.in/online/ddproject/integrating-openmodelica-and-dwsimcape-open-low-cost-netbook-computers
>>
>> Anyways, is there some IRC channel for the discussion. I couldn't
>> find one.
>>
>>
>> Thanks,
>> Akash
>> ᐧ
>>
>> On Mon, Mar 16, 2015 at 6:21 AM, John Pye <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Hi Akash
>>
>> Pleased to hear from you. Indeed, we have done a lot with
>> Prof Kannan Moudgalya in the past. Depending on your
>> interests there are quite a few areas that you could make
>> good contributions. With your background, I would definitely
>> suggest that you consider areas where your chemical
>> engineering knowledge helps us out. For example, improving
>> our thermodynamics routines (FPROPS etc), or in undertaking
>> some development of missing component/unit models that allow
>> ASCEND modelling of complex flowsheets of interest. For
>> example, I would really like to see a comprehensive model of
>> a eg ammonia synthesis or steam methane reforming processes
>> in ASCEND, with at least cubic equations of state thermo.
>> Building this up carefully and systematically, with good
>> quality documentation, would be a very useful contribution.
>>
>> Let me know a bit more about your MTech research. Are you
>> basically introducing equation-based components into the
>> sequential-modular DWSIM framework?
>>
>> Cheers
>> JP
>>
>>
>> On 15/03/15 00:54, Akash Deep Singhal wrote:
>>> Hello John and team,
>>>
>>> I am a 4th year student, pursuing a *Dual Degree* Course
>>> (B.Tech + M.Tech) in the *Department of Chemical
>>> Engineering* and minor in *Department of Computer
>>> Science* at *IIT Bombay.
>>> *
>>> I have deep interest and some experience in Artificial
>>> Intelligence, IoT and Data Structures. I am currently
>>> working on my MTech Thesis '*Integration of Openmodelica and
>>> DWSIM-CapeOpen on ARM based devices*' under the guidance of
>>> Prof. Kannan M Moudgalya.
>>>
>>> Having ChE knowledge with programming interests, I would
>>> love to work with Ascend. I have checked out svn, built it
>>> and now I am playing around with set of models. Please give
>>> me some area/bug to work at.
>>>
>>> Thank you,
>>> photo <http://www.azeotropy.com/akash>
>>> *Akash Deep Singhal*
>>> 4th Year Undergraduate | IIT Bombay
>>> | Mobile: 7738983120 | Email: [email protected]
>>> <mailto:[email protected]>
>>> | Web: http://www.akashsinghal.in
>>>
>>>
>>>
>>>
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>>
>>
>>
>> --
>> photo <http://akashsinghal.in>
>> *Akash Deep Singhal*
>> 4th Year Undergraduate | IIT Bombay
>> | Mobile: 7738983120 | Email: [email protected]
>> <mailto:[email protected]>
>> | Web: http://www.akashsinghal.in
>>
>>
>>
>>
>> --
>> photo <http://akashsinghal.in>
>> *Akash Deep Singhal*
>> 4th Year Undergraduate | IIT Bombay
>> | Mobile: 7738983120 | Email: [email protected]
>> <mailto:[email protected]>
>> | Web: http://www.akashsinghal.in
>>
>
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things parallel software development, from weekly thought leadership blogs to
news, videos, case studies, tutorials and more. Take a look and join the
conversation now. http://goparallel.sourceforge.net/
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