GAMS 35 數學模型軟體-資安軟體/研究分析軟體/心理學軟體/新永資訊有限公司

GAMS 35 數學模型軟體

GAMS 35 數學模型軟體

  • GAMS 35 數學模型軟體
  • 編號
  • 類別
    數學分析軟體
  • 介紹
    通用代數建模系統(GAMS)是一種用於數學規劃和優化的高級建模系統。它由語言編譯器和穩定的集成高性能解算器組成。GAMS專為複雜的大型建模應用程序量身定制,允許您構建可以快速適應新情況的大型可維護模型。GAMS專門用於建模線性,非線性和混合整數優化問題。
  • 價格

GAMS 35 Mathematical Modeling Software

What's new in GAMS 35​​​​

Major release

•   Added new dollar control options gdxLoad and gdxUnload to
     load and unload symbols from and to GDX files in a single
     instruction at compile time.
•   Print an extra log line for echo dollar control options $echo,
    $echoN, and $onEcho, which write to an external file. When
    running GAMS from one of the GAMS IDEs, this log line can
    be clicked to open the file created.
•   Extended the report generated by dmpSym and dmpUserSym
     to include another column reporting a memory estimate for
     each set, parameter, variable, and equation.
•   Removed the columns DIM-OK, ACCESS, SPECVAL, EXTERN,
     TABLE, DOMAIN, and LAGLEAD from the report generated
     by dmpUserSym. This information is very technical and
     mostly of internal interest. These columns are still available
     with dmpSym.
•   The status of Multi-Threading for the Grid and Multi-
     Threading Solve Facility has been changed from beta to
     released and fully supported.
•   Fixed that the stars option was ignored for some messages
     in the output file.
•   Fixed a problem that causes default records in the data
     statement or when loaded from GDX (see $load) being
     ignored with implicit set definition. So with only i1 and
     i2 made it into i. Now, i0 is added as well.
•   Fixed a problem, where $onDotL and $onDotScale were
     ignored in put statements.
•   Fixed a problem, where $onDelim was applied incorrectly
     to display and option statements.
•   Fixed a problem, where $onSymXRef and $onUElXRef were
     ignored when there were too many references.
•   Fixed and extended the behavior of $eval: If a GAMS function       was hidden by a user defined symbol, $eval ignored the latter.
     This has been changed. Now, the GAMS function needs to be
     prefixed with system. to be accessed in this case. An example
     for this behavior is given here.
•   Fixed a potential problem when doing a filtered load of
     symbols with domain violations through EmbeddedCode.
•   Fixed an unwanted compilation error that happened if $onExt
    ernalInput or $onExternalOutput were used on the same line
    and after $if.
•  Fixed a problem where dumpOpt in combination with $onVerb
    atim skipped a leading substitution character in an $ifThen
   block.

Minor release
•  Allow to write point files with asynchronous solves as well.
•  Moved the log line pointing to a reference file from the end
    of the compilation phase to the end of the run, to make it
    easier to recognize.

•  Automatically deactivate holdFixed if a model is solved asynchr
    onously, since this could lead to inconsistent solutions otherwi
    se. Note that this can make a square model non-square as in
    cns01. Also note, that this could require some adjustment to
    models which actually relied on the fact, that models solved
    like this did not update the solution for fixed variables. Such
    a change was done for the model jacobi.

•  Fixed a problem where the file path specified with $gdxIn or
    $gdxLoad was ignored when inputDir was applied.

•  The status of Multi-Threading for the Grid and Multi-Threading
    Solve Facility has been changed from beta to released and fully
    supported.

•  Fixed a potentially broken work file written with previousWork.
•  Fixed the default for command line parameter empty. It should
    be on but was off.

•  Fixed the dollar control options $setComps, $setNames, and
    $splitOption: They should generate scoped compile-time
    variable but generated local ones.

•  Fixed potentially wrongly reported bounds for models
    solved with solveLink=6.

•  Fixed missing info about objective variable with
    solveLink = 3 and asyncSolLst = 1.

 

系統需求

OS:
Windows :

Windows 8.1 or newer on AMD- or Intel-based (x86_64) architectures.
Mac:
Intel-based 64-bit (x86_64) Macintosh system with 10.14
(Mojave), 10.15 (Catalina), or 11 (Big Sur).

Linux:
AMD- or Intel-based 64-bit (x86_64) Linux systems with glibc 2.17 or higher.

 

GAMS 35 數學模型軟體

 GAMS 35​​​​ 有哪些新功能

主要版本

•   添加了新的美元控制選項gdxLoad和gdxUnload以在編譯時通過一條
​​​     指令從 GDX 文件加載和卸載符號。
•   為寫入外部文件的echo 美元控制選項$echo、$echoN和$onEcho
     印額外的日誌行。從GAMS IDE之一運行 GAMS 時,可以單擊此日
​​     ​​​​​誌行以打開創建的文件。
•   擴展了dmpSym和dmpUserSym生成的報告,以包括另一列報告每
​​     個集合、參數、變量和方程的內存估計。
•   刪除列DIM-OK,ACCESS,SPECVAL,EXTERN,TABLE,
     DOMAIN,並LAGLEAD從生成的報告dmpUserSym。
     這些信息非常技術性,主要是內部利益。這些列仍可用於dmpSym。
•   網格多線程和多線程解決工具的狀態已經從測試版變為發布版,
​​     ​​​​​並且完全支持。
•   修復了輸出文件中某些消息的星號選項被忽略的問題。
•   修復了導致數據語句中的默認記錄或從 GDX(參見$load)
     加載時被隱式集定義忽略的問題。所以與Set i;Parameter p
     (i<) / i0 0, i1 1, i2 2 /;只有i1並i2使其成為i. 現在,i0也添加了。
•   修復了在put語句中忽略$onDotL和$onDotScale的問題。
•   修復了$onDelim錯誤地應用於displayandoption語句的問題。
•   修復了當引用過多時$onSymXRef和$onUElXRef被忽略的問題。
•   修復並擴展了$eval的行為:如果 GAMS 函數被用戶定義的符號隱藏,
​​     ​​​​​則$eval忽略後者。這已被更改。現在,system.在這種情況下,GAMS
     函數需要以 為前綴才能訪問。此處給出了此行為的示例。
•   修復了通過EmbeddedCode對具有域違規的符號進行過濾加載時的潛
​​    ​​​​​ 在問題。
•   修復了在同一行和$if之後使用$onExternalInput或$onExternalOutp
     ut 時發生的不需要的編譯錯誤。
•   修復了dumpOpt與$onVerbatim組合跳過$ifThen塊中的前導替換字
​​    ​​​​​ 符的問題。

次要版本
•   也允許用異步解法寫點文件。
•   將引導參考文件的日誌從編譯階段開始時移至運行結束時,
​​   ​​​​​  以便更容易識別。

•   一個模型被這解決了,因為這可能會導致問題的解決。注意,
​​   ​​​​​  可能會導致一個請的模型,不喜歡自動。如果cn11還可能注意的是,
​   ​​​​​​  這需要對模型進行一些調整,這些模型實際上依賴於這樣的事實,
​    ​​​​​ 即像這樣求解的模型不會更新固定變量的解。對模型jacobi 就可以這樣
​   ​​​​​​  的改變。

•   修改了一個問題:當應用 inputDir 時,用 $gdxIn 或 $gdxLoad
     指定的文件路徑被忽略了。

•   修改了用以前的工作寫的工作文件有可能被破壞的問題。
•   修改了默認的命令行參數為空的問題。應該是打開的,程序是關閉的。
•   修改了美元控制選項 $setComps, $setNames, 和 $splitOption。
•   Fixed the dollar control options $setComps, $setNames, and
     $splitOption: They should generate scoped compile-time
     variable but generated local ones.

•   修改了用solveLink=6解決的模型可能會錯誤地報告界限的問題。
•   修改了在solveLink=3和asyncSolLst=1的情況下丟失的標籤變量
​​    ​​​​​ 信息。

 

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