Studio 8 Simulation Engine Features - Version History

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The Studio 8 Simulation Engine introduces a new scheme for distribution of software created with the Studio 8 SDK.

Find the full list of Service Releases and Feature Packs launched for Studio 8.


Studio 8 SDK Service Release 7 with Feature Pack 3

Released July, 2011

The seventh service release of Studio 8 Simulation Engine accompanies Service Release 7 of Studio 8 SDK and contains some bug fixes:

Bug fixes:

  • Fixed a problem that could cause undetermined behavior when using the numerical value of index variables based on dynamic ranges in variable definitions.
  • Fixed a problem that prevented editing the values of series variables using INITIF.
  • Fixed a problem that prevented Powersim Studio Simulation Engine from loading models with more than 400 variables using dynamic ranges.
  • Fixed a problem that prevented Powersim Studio Simulation Engine Developer from loading models created in the demo version of Powersim Studio.
  • Fixed problems that caused the Database Dataset to not skip tuples/rows where all data fields/columns contained zero or NAN when used with data fields containg dates/times.
  • Fixed a problem that caused the data of a Database Dataset with a single out-in variable to be incorrectly written to the database.
  • Fixed a problem in the Spreadsheet Dataset that caused the {RUNINDEX} field code to expand to an invalid value for run indices greater than 999.

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Studio 8 SDK Service Release 6 with Feature Pack 3

Released March, 2011

The sixth service release of Studio 8 Simulation Engine accompanies Service Release 6 of Studio 8 SDK and contains one new feature, one improvement, and some bug fixes:

New Features:

  • Supports models created in Powersim Studio 8 Service Release 7 (or newer) where the PIVOTSUM function is used. Please note that this function requires Service Release 6 of the Powersim Studio Simulation Engine. Projects using PIVOTSUM will load in Service Release 5 also, but variables using the function will become undefined.

Improvements:

  • New ModelVariable method: RestorePermanentvalue.

Bug fixes:

  • Fixed several problems to make Powersim Studio Simulation Engine handle insufficient memory better.
  • Supports models where certain functions not working properly in Powersim Studio 8 Service Release 6 are used. This applies to the following functions when used with an index variable based on a dynamic range: DERIVN (with 2 parameters), SPARSEVECTOR, SPARSESUM, SCAN functions (with 4 parameters), and (with 2 or 3 parameters): ARRAVERAGE, ARRMAX, ARRMIN, ARRPRODUCT, ARRSTDEVP, ARRSTDEV, ARRSUM, CEIL, FRAC, FLOOR, INTEGER, ROUND, and TRUNC.
  • Fixed a problem that caused the FRAC function with three parameters to return an incorrect result if the last parameter was non-zero and an incorrect result unit if used with a point unit.
  • Fixed a problem with the ^ and #^ operators that prevented use of index variables in the first operand unless the operand was unitless.
  • Fixed a problem with the SORT and SORTIDX functions that prevented sorting vectors with dynamic dimensions (dimensions based on dynamic ranges).

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Studio 8 Simulation Engine Service Release 5 with Feature Pack 3

Released January, 2011

The fifth service release of Studio 8 Simulation Engine accompanies Service Release 5 of Studio 8 SDK and introduces Feature Pack 3 for Simulation Engine users with Support and Upgrade Agreement (SUA). It also contains an improvement and some bug fixes available to all users.

New Features:

  • Supports Studio 8 SDK solutions where Feature Pack 3 features have been used and Studio 8 models where Feature Pack 3 features have been enabled.

Improvements:

  • The performance of the Powersim Studio Simulation Engine is improved when deleting database data as a consequence of the "Delete all existing data in table" setting for the pre-write action of a Database Dataset

Bug fixes:

  • Fixed a problem with the Database Dataset that could cause incorrect mapping between database texts and enumeration range elements. The mapping no longer uses case sensitive comparisons.
  • Fixed a problem that in some cases prevented index variables from being updated when activating runs through Simulation::ActivateRun.
  • Fixed a problem that could cause the Database Dataset to not work properly with the "Skip tuples where all data fields/columns contain Not-a-Number" setting.
  • Fixed a problem that in some cases could cause undetermined behavior when using the Database Dataset with Microsoft SQL Server and there was a mismatch between the database and the dataset definition.

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Studio 8 Simulation Engine, Service Release 4 with Feature Pack 2

Released June, 2010

The fourth service release of Studio 8 Simulation Engine accompanies Service Release 5 of Studio 8 SDK and contains a couple of bug fixes:

Bug fixes:

  • Fixed a problem that in some cases could cause undetermined behavior when running simulations with series variables on multi-core computers.
  • Fixed a problem that caused incorrect calculation of delay functions and other state functions using delayed input from levels.

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Studio 8 Simulation Engine, Service Release 3 with Feature Pack 2

Released March, 2010

The third service release of Studio 8 Simulation Engine accompanies Service Release 4 of Studio 8 SDK and contains a few improvements and bug fixes:

Improvements:

  • Improved the multi-core processing capabilities of Powersim Studio Simulation Engine.
  • Improved calculation logic to increase simulation performance in Powersim Studio Simulation Engine.
  • The time used to close project files is now in some cases substantially reduced.

Bug fixes:

  • Fixed a problem that could cause undetermined behaviour when using the DISTRIBUTE or DISTRIBUTETOFRONT flow functions with integer parameters.
  • Fixed a problem that in rare cases caused binary operators (e.g. +, -, *, /) to not work when one of the operands was a result of a FOR loop.
  • The SAP BI Dataset no longer deletes all data before the first time period of the simulation when writing data to SAP BI.
  • Fixed a problem that could cause the random functions to return the same random sequence for a subsequent run if the previous run completed in less than 0.05 seconds.

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Studio 8 Simulation Engine, Service Release 2 with Feature Pack 2

Released January, 2010

The second service release of Studio 8 Simulation Engine accompanies Service Release 3 with Feature Pack 2 of Studio 8 and Service Release 2 with Feature Pack 2 of Studio 8 SDK. The release introduces Feature Pack 2 for Simulation Engine users with Support and Upgrade Agreement (SUA). It also contains an improvement and some bug fixes available to all users.

New Features:

  • Powersim Studio Simulation Engine now takes advantage of multi-core processing when running simulations.
  • Supports Studio 8 SDK solutions where Feature Pack 2 features have been used and Studio 8 models where Feature Pack 2 features have been enabled.

Improvements:

  • The time used to load large project files is now in many cases substantially reduced.

Bug fixes:

  • Fixed a problem with accumulated and average series variables of integer type that prevented access to their value history.
  • Fixed a problem that prevented finding units given their plural name.
  • Fixed a problem with the SECOND function when used in projects with 'Enforce time unit consistency' switched off.
  • Fixed a problem experienced when writing data to a read-only workbook through a Spreadsheet Dataset.
  • Fixed a problem with the FILLINZEROES flow function that could cause undetermined behaviour when one of the dimensions in the associated level used negative indices.

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Studio 8 Simulation Engine, Service Release 1 with Feature Pack 1

Released October, 2009

The first service release of Studio 8 Simulation Engine accompanies Service Release 2 of Studio 8 and Service Release 1 of Studio 8 SDK and contains a number of bug fixes.

Bug fixes:

  • Fixed a bug that sometimes caused problems when using the Powersim Studio Simulation Engine in a multi-threaded environment.
  • Fixed a problem that in some cases caused levels using the XLDATA function to not be initialized correctly.
  • Fixed a problem with the Database Dataset that sometimes caused wrong values to be read or written when the simulation horizon was less than a year.
  • Fixed a problem with the Powersim Studio Simulation Engine Administration Utility where the Upgrade button was disabled on Windows Vista and Windows 7.

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Studio 8 Simulation Engine with Feature Pack 1

Released July, 2009

The first release of Studio 8 Simulation Engine accompanies Feature Pack 1 of Studio 8 and Studio 8 SDK (and therefore includes Feature Pack 1). The release contains some new features.

New Features:

  • Supports solutions created in Studio 8 SDK and models made in Studio 8. Also supports Studio 8 SDK solutions where Feature Pack 1 features have been used and Studio 8 models where Feature Pack 1 features have been enabled.
  • New scheme for distribution of software created with the Studio 8 SDK

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