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===Welcome to the '''GoldSim Knowledge Base'''!  ===

The GoldSim Knowledge Base contains articles addressing frequently asked questions, workarounds for known problems, and advice on applying GoldSim. There are 4 Categories in the Knowledge Base Namespace: 
* <a href="Knowledge Base.AllPages.aspx?Cat=Knowledge%20Base.Installation%20and%20Registration%20" class="systemlink" title=" Installation and Registration"> Installation and Registration</a>
* <a href="Knowledge Base.AllPages.aspx?Cat=Knowledge%20Base.Building%20and%20Running%20Models%20" class="systemlink" title=" Building and Running Models"> Building and Running Models</a>
* <a href="Knowledge Base.AllPages.aspx?Cat=Knowledge%20Base.Modeling%20Tips%20and%20Tricks%20" class="systemlink" title=" Modeling Tips and Tricks"> Modeling Tips and Tricks</a>
* <a href="Knowledge Base.AllPages.aspx?Cat=Knowledge%20Base.How%20GoldSim%20Works%20" class="systemlink" title=" How GoldSim Works"> How GoldSim Works</a>

You can search the Knowledge Base articles by keywords in '''[Knowledge Base.Search.aspx?AllNamespaces=0&amp;FilesAndAttachments=0&amp;Query= | the Knowledge Base Search Page]'''. 

If you'd like to edit or create a new Knowledge Base article, please read [Knowledge Base.How-to-Post-a-Knowledge-Base-Article | How to Post a Knowledge Base Article].  

====Recently Added Articles====

* '''[^++Comparing-Time-Varying-Data-in-GoldSim-and-Spreadsheets|Comparing Time Varying Data in GoldSim and Spreadsheets]''': This article first describes the differences between dynamic simulation tools (i.e., GoldSim) and spreadsheets. Following this introduction, it describes some problems people commonly encounter when comparing GoldSim results to spreadsheet results.

* '''[^++Simple-mixing-chemistry-equilibria-using-LookupTables-for-indirect-linkage-to-PHREEQC|Simple Mixing Chemistry Equilibria]''': One of most common application of geochemical models is prediction of the effects of mixing solutions of different chemical compositions. This model is an example of how to incorporate PHREEQC geochemical calculations into a GoldSim model through the use of a "Lookup Table" element. 

* '''[Knowledge Base.Memory-Usage-in-GoldSim| Memory Usage in GoldSim]'''
__How GoldSim Works__: My model is large and uses too much memory. How can I reduce the memory size of my model? 

* '''[Referencing-External-Documents-in-GoldSim|Referencing External Documents in GoldSim]'''
__Modeling Tips and Tricks__: I need to create links in my GoldSim model to documents and webpages. Is there a way to reference several documents?  

* '''[Knowledge Base.Number-of-Realizations-to-Process-Per-Slave-Transaction| Increase the Number of Realizations to Process Per Slave Transaction for DP Run]'''
__Modeling Tips and Tricks__: I am running a Monte Carlo simulation over network using Distributed Processing Module. Since I have access to a few muti-core machines, I have tried using a large number of slaves but I did not observe much reduction in the simulation run time. Is there another way to reduce the run time?  

* '''[Knowledge Base.ODBC_on_ 64-bit_System| Adding a Database Source on a 64-bit System]'''
__Building and Running Models__: I attempted to add a database source using the ODBC Data Source Administrator tool on a 64-bit system, but I was presented with an error message saying that ODBC driver could not be found.  

* '''[Knowledge Base.Cannot-run-GoldSim-960SP4| Cannot run GoldSim 9.60SP4 though the latest version runs with no errors]'''
__Installation and Registration__: I have no problems running the latest version of GoldSim with my license. However I cannot run  [++Version960|GoldSim 9.60], 9.50 or any older versions of GoldSim. Moreover the error message says that I can use GoldSim versions only up to 7.02.000. 

* '''[Knowledge Base.Microsoft-Visual-C-Express-A-Free-Compiler-Debugger-For-DLLs-to-run-in-goldsim| Microsoft Visual C++ Express - A Free Compiler/Debugger for DLLs to Run in GoldSim]''' 
__Modeling Tips and Tricks__: How do I get started with a free C/C++ compiler for GoldSim DLLs and how do I debug GoldSim DLLs? 

* '''[Knowledge Base.Test-whether-all-or-any-elements-of-two-vectors-or-matricies-are-equal | Test whether all or any elements of two vectors or matricies are equal]'''
__Modeling Tips and Tricks__: How can I create logic to test whether all or any entries in two vectors or matricies are equal? 

* '''[Knowledge Base.Stuck-in-Run-Mode | Model is stuck in Run Mode and will not to Edit Mode]'''
__Building and Running Models__: A model is stuck in Run Mode without results but GoldSim will not let me return to Edit Mode or re-run the model. 

* '''[Knowledge Base.Saving-Temporary-Files-to-a-Different-Partition | Saving Temporary Files to a Different Partition]'''
__Modeling Tips and Tricks__: On your machine you have a boot partition that has limited space. You wish to save GoldSim's temporary files to a different partition on your system. 

* '''[Knowledge Base.Unidentified-Publisher-Warning-Dialog | Unidentified Publisher Warning Dialog When Attempting to Uninstall, Upgrade GoldSim on Windows Vista]'''
__Installation and Registration__: When you remove or upgrade GoldSim in Windows Vista, you may receive the following notification message in the standard Windows Vista User Account Control dialog box: An unidentified program wants to access your computer. 

* '''[Knowledge Base.Setting-the-3GB-switch | An "Insufficient Virtual Memory" Error when Running a Model]'''
__Building and Running Models__: An "insufficient virtual memory" error occurs when I try to run a model.&nbsp;
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