This post will cover two additional error messages that can occur in the development of an HEC-ResSim model. Special thanks to Logan Osgood-Jacobs of the Seattle District of the Corps of Engineers for supplying these screenshots.
Error 1: Ghost Nodes
Ghost nodes, or nodes that you did not intend to include in the model, seem to periodically occur in the development of ResSim models. I have gotten these when I have had to edit the watershed configuration and then perform an update to the reservoir network. However, I believe that others have gotten ghost nodes in the initial development of the model.
So, how do you tell if you have a ghost node? The most direct way is getting an error message similar to the one below when you compute your simulation.
Error 1: Ghost Nodes
Ghost nodes, or nodes that you did not intend to include in the model, seem to periodically occur in the development of ResSim models. I have gotten these when I have had to edit the watershed configuration and then perform an update to the reservoir network. However, I believe that others have gotten ghost nodes in the initial development of the model.
So, how do you tell if you have a ghost node? The most direct way is getting an error message similar to the one below when you compute your simulation.
This error message is indicating an issue with Node 81. In the Reservoir Network Module, go to Reports > Advanced > Node List. The report is shown below. There is a node named, "Node 81". Not having a ~E indicates that there is a problem. Simply delete this node, go to the Simulation Module and "Replace from base" and re-simulate. This should take care of the problem.
Error 2: Physical Data Tables not Increasing
Typically, HEC-ResSim will give you an error message as you are inputting physical data into the model if your data are not increasing. However, Logan got this error message during the simulation. She had copied the physical data table from a spreadsheet to the ResSim model. It appears that ResSim did not provide an error message at that time and, instead, provided an error message during the simulation. This error was fixed by ensuring that the values in the table were increasing.
Hello!
ReplyDeleteDid anyone have error regarding computation?
I got this message and computation fail at 25%.
Starting Computations.
Computing Hindcast
Exception thrown during compute is:
java.lang.ArrayIndexOutOfBoundsException: -1
hec.model.SeasonalRecord.init(SeasonalRecord.java:57)
hec.model.SeasonalRecord.interpolate(SeasonalRecord.java:208)
hec.model.SeasonalRecord.interpolate(SeasonalRecord.java:235)
hec.rss.model.StorageZone.getIndpVarValue(StorageZone.java:320)
hec.rss.model.StorageZone.getElevation(StorageZone.java:383)
hec.rss.model.OpSet.getActiveZone(OpSet.java:467)
hec.rss.model.ReservoirOp.computeHindcastStep(ReservoirOp.java:689)
hec.rss.model.ReservoirElement.computeHindcast(ReservoirElement.java:850)
hec.rss.model.RssSystem.simulateHindcast(RssSystem.java:3388)
hec.rss.model.RssSystem.compute(RssSystem.java:579)
hec.rss.model.RssRun.a(RssRun.java:1117)
hec.rss.model.RssRun.compute(RssRun.java:309)
hec.rss.server.RssRmiWorkspaceImpl.computeAlternative(RssRmiWorkspaceImpl.java:124)
hec.model.AbstractSimulation.computeModel(AbstractSimulation.java:1)
hec.model.SimulationPeriod.a(SimulationPeriod.java:736)
hec.model.SimulationPeriod.computeRun(SimulationPeriod.java:141)
hec.client.hc.run(hc.java:3)
java.lang.Thread.run(Unknown Source)
ERROR: ResSim compute failed!
COMPUTE FAILED
I am new to this program so I don't know any background of this program.
Thank you!
Krešo
It looks like your model stopped working at 25%. This usually means that the model did not begin the simulation but instead crashed due to a data issue. I am not sure what the data issue is from the error message, but you should check the physical data to make sure that you have the elevation-storage data defined along with the outlet data defined. If that looks ok, make sure that you have the zones defined in your operations set. You can check the post detailing the development of a ResSim model to make sure that you have all of the data defined correctly.
DeleteThe example is in the August 10, 2015 post.
DeleteThank You sooo much! I didn't defined zones, because my task is to simulate natural state of several fields in karst as reservoires, some sort of calibration. After natural state is properly simulated, I have to simulate hypothetical construction of retention at one of those karst fields, and to calculate how much water can be saved for accumulation downstream.
DeleteThank You again!
With regards,
Krešimir Pavlić
Thank you very much. This is very helpful.
ReplyDeleteHello!
ReplyDeleteDid anyone have error regarding computation?
I got this message and computation fail at 10%.
Initializing Simulation Compute.
Saving Simulation Files...
Performing Simulation for SISMG3----0
Running ResSim alternative SISMG3----0
ResSim Compute
Build Version: 3.1.8.73R, April 2013
Program-Determined Flow Computation Method: Period Average
Evaluating Routing for Downstream Operations
Reservoir: Presa Calachaka
Computing Cumulative Local Flow
RssSystem.orderElementsForCompute: element order index, -1 is out of range at position 27
ResSim ERROR: Failed to compute cumulative local flows
ERROR: ResSim compute failed!
Check Compute Log for details
Since your model only ran to 10%, it appears that you have a data issue. Do you have an inflow time series mapped for the upstream end of your model including any modeled tributaries?
DeleteThe August 10, 2015 post details the development of a model step by step. It may provide some help in determining what the error is.
DeleteHellow!
ReplyDeleteI got error message like below and simulation fail at 15%.
------------
Routing.checkForecastCalc: invalid flow calculation
Flow (cfs) = -3.4028234663852886E38
Element: CP2 to NN_Junction 2 0901
Date and Time: 02Jan2002
RssSystem.simulateHindcast: Hindcast compute failed for element CP2 to NN_Junction 2 0901
RssSystem.compute: Hindcast simulation failed
ResSim ERROR: System Computations failed!
ResSim ERROR: Failed to compute unregulated flows
ERROR: ResSim compute failed!
------------
Could you give me hint to solve the Computations fail?
PS. If you want download Data File, refer below link
http://bigmail2.nate.com/download/sid=-3&info=673a4d7d6ab7db99283cba8d9a2d58c05d9f58728847a8b59eeb85b683235116876731d939210e4c56d242ae31f172b583cdf108efb772ab68f9878cba74e90dbdeb54c5aa406aceeeaf602737b8e208
I believe you have missing lookback data. See the post from March 20, 2015. Your error message looks similar to Error #7.
DeleteSince your model only ran to 10%, it appears that you have a data issue. Do you have an inflow time series mapped for the upstream end of your model including any modeled tributaries?
ReplyDeleteJunction.initialize: Failed to get inflow TS array from node Node 7
Junction: CP1
Failed to initialize Element CP1
ResSim ERROR: Failed to initialize Network
ResSim ERROR: Failed to compute cumulative local flows
ERROR: ResSim compute failed!
Element: CP7 to Point D
ReplyDeleteDate and Time: 02Jan2012
RssSystem.simulateForecast: Forecast compute failed for element CP7 to Point D
RssSystem.compute: Forecast simulation failed
ResSim ERROR: System Computations failed!
ResSim ERROR: Failed to compute regulated flows
ERROR: ResSim compute failed!
hey I got Above error Kindly Assist
Hi, I got the below error message and simulation failed at 48%.
ReplyDeleteRouting.checkForecastCalc: invalid flow calculation
Flow (cfs) = Infinity
Element: Junction 50 to Bkt Jenuk Inflow
Date and Time: 31Dec2015
RssSystem.simulateForecast: Forecast compute failed for element Junction 50 to Bkt Jenuk Inflow
RssSystem.compute: Forecast simulation failed
ResSim ERROR: System Computations failed!
ResSim ERROR: Failed to compute regulated flows
ERROR: ResSim compute failed!
Please help! Thank you.
I believe you have missing lookback data. Also, check to make sure that the upstream end of each tributary and the main stem of the river has inflow values. It is probably one of those two issues based on what the error message is showing. You can refer to this blog post for an example. Your error message looks similar to Error #7.
Deletehttps://hec-ressim.blogspot.com/2015/03/how-do-i-fix-my-errors.html
Hiya,
ReplyDeleteI have received this error:
Routing.checkForecastCalc: invalid flow calculation
Flow (cfs) = NaN
Element: CP2 to Downstream end of model
Date and Time: 01Jan2016 0200
RssSystem.simulateForecast: Forecast compute failed for element CP2 to Downstream end of model
RssSystem.compute: Forecast simulation failed
ResSim ERROR: System Computations failed!
ResSim ERROR: Failed to compute regulated flows
ERROR: ResSim compute failed!
Check Compute Log for details
Upon reading earlier comments, I edited the inflow timeseries to be cumulative in excel (is this correct?), and as the error says cfs, I have changed the units to cfs even though I am working in SI units to see if it would work.
Any help would be really appreciated!
Thanks,
Anurada
Don't worry! I've got it.
DeleteI was using an outdated version of HEC-ResSim!
Hi.
ReplyDeleteI have recieved this error in simulation compute. 25%
Failed to initialize Element Xudaferin s.a
ResSim ERROR: Failed to initialize Network
ResSim ERROR: Failed to compute regulated flows
ERROR: ResSim compute failed!
Please help! Thanks.
Farid
Farid, I believe you are missing lookback data in your model. See error #3 in this post: https://hec-ressim.blogspot.com/2015/03/how-do-i-fix-my-errors.html
DeleteIt looks similar to your error.
ReplyDeleteHi I have recieved this error. can anyone help me with this?
Computing Cumulative Local Flow
Error in TSRecord.loadTSData. Input timeseries /MANGLA/FEBRUARY/FLOW//1DAY/MANGLA MODEL/. Period Average Data can not be interpolated as Instantaneous data
ResSim ERROR: Failed to load time-series records
ResSim ERROR: Failed to compute cumulative local flows
ERROR: ResSim compute failed!
This is something similar to the error message above. Make sure that you specify inflow values at the upstream end of your main channel and any modeled tributaries. Make sure that your data is continuous with no gaps. Make sure that you have lookback data. Also, even though ResSim can handle data types of a different time step than what you specify for the simulation, I tend to like to make the dss pathname that I am using the same timestep as the simulation. I can show how to do that in another post.
Deletehello
ReplyDeleteim getting error after 25%
the error is "Changing input timeseries /TARBELA/RESERVOIR/INFLOWS//TRI-MONTH/OBS/ time interval. Was 14400 minutes. Converted to 1440 minute interval.
"
can you help me how to fix this
thanks