[Equest-users] BDL expression dependency limit

[Bishop, Bill]

Hi Patrick,
Here are some ideas based on previous suggestions. (Caveat - I haven't had to address issues with the expression dependency limit before.)

-        Scott Criswell suggested "MaxExpDeps = 10" versus the default of 12. You could try experimenting with even lower numbers, until the problem goes away or you get a different problem from limiting the number of allowable references.

-        Scott's other suggestions were as follows:

o   BDL source code mods to increase the limit of exp dep lists

o   removal of some fraction of the expressions contained in your INP file, and/or

o   the addition of Set-Default statements in your INP file that replace additional BDL default expressions with static values or symbolic selections

-        I like the Set-Default statements idea. Add commands within your expressions for SET-DEFAULT FOR SPACE, SET-DEFAULT FOR SYSTEM, SET-DEFAULT FOR ZONE etc. to reduce the number of DOE-2 default dependencies. There are many DOE-2 default expressions that are pretty elaborate, which could be replaced with uniform default values or simpler expressions. See for example, the DOE-2 default expression for ZONE:THERMOSTAT-TYPE.

-        Using Input Macros in lieu of or in combination with keyword expressions may help. I am just starting to experiment with this BDL feature.
Regards,
Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

[cid:image003.jpg at 01D17F75.9B1E7220]  [cid:image005.jpg at 01D17F75.9B1E7220]



134 South Fitzhugh Street                 Rochester, NY 14608

T: (585) 698-1956                        F: (585) 325-6005

bbishop at pathfinder-ea.com<mailto:wbishop at pathfinder-ea.com>             www.pathfinder-ea.com<http://www.pathfinder-ea.com/>

[http://png-5.findicons.com/files/icons/977/rrze/720/globe.png]Carbon Fee and Dividend - simple, effective, and market-based.


From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Lapierre, Patrick
Sent: Wednesday, March 16, 2016 9:25 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] BDL expression dependency limit

I've run up against the hard-coded limit of expression dependency in one of my projects.
Reading the archives, I've tried the 2 solutions I found to increase the capacity but I'm still short.

Those two solutions were :

-        Adding « MaxExpDeps = 10 » into the project PD2 definition;

-        Removing all « C- » keyword default expressions from the BDLDft.dat file (since they are only useful for Title-24 analysis);

I'm wondering if anyone had some other insight as to how I could further increase the expression dependency capacities.

Thanks,

  [Bouthillette Parizeau] <http://www.bpa.ca/>

Patrick Lapierre_ing.
plapierre at bpa.ca<mailto:plapierre at bpa.ca>   |  www.bpa.ca<http://www.bpa.ca>  |  t: 5143833747x2807

Les informations contenues dans le courriel que vous venez de recevoir, y compris les pièces jointes, sont destinées à l'usage exclusif de la (ou des) personne(s) identifiée(s) comme destinataires et sont confidentielles. Si vous n'en êtes pas le destinataire, soyez avisé que tout usage en est interdit. Si vous avez reçu ce courriel par erreur, veuillez le retourner à l'expéditeur et le supprimer complètement de votre système informatique.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160316/25b85303/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image008.jpg
Type: image/jpeg
Size: 4970 bytes
Desc: image008.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160316/25b85303/attachment-0006.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.jpg
Type: image/jpeg
Size: 1517 bytes
Desc: image003.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160316/25b85303/attachment-0007.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.jpg
Type: image/jpeg
Size: 1647 bytes
Desc: image005.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160316/25b85303/attachment-0008.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image007.png
Type: image/png
Size: 3862 bytes
Desc: image007.png
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160316/25b85303/attachment-0002.png>