  
  
                                     [1X[5XSCSCP[105X[101X
  
  
              [1XSymbolic Computation Software Composability Protocol[101X
  
  
                                 Version 2.4.4
  
  
                                 27 August 2025
  
  
                               Olexandr Konovalov
  
                                  Steve Linton
  
  
  
  Olexandr Konovalov
      Email:    [7Xmailto:obk1 at st-andrews dot ac dot uk[107X
      Homepage: [7Xhttps://alex-konovalov.github.io/[107X
      Address:  [33X[0;14YSchool of Computer Science[133X
                [33X[0;14YUniversity of St Andrews[133X
                [33X[0;14YJack Cole Building, North Haugh,[133X
                [33X[0;14YSt Andrews, Fife, KY16 9SX, Scotland[133X
  
  
  Steve Linton
      Email:    [7Xmailto:sal at cs dot st-andrews dot ac dot uk[107X
      Homepage: [7Xhttp://www.cs.st-andrews.ac.uk/~sal/[107X
      Address:  [33X[0;14YSchool of Computer Science[133X
                [33X[0;14YUniversity of St Andrews[133X
                [33X[0;14YJack Cole Building, North Haugh,[133X
                [33X[0;14YSt Andrews, Fife, KY16 9SX, Scotland[133X
  
  
  
  -------------------------------------------------------
  [1XAbstract[101X
  [33X[0;0YThe   [5XGAP[105X   package  [5XSCSCP[105X  implements  the  Symbolic  Computation  Software
  Composability  protocol  ([7Xhttps://www.openmath.org/standard/scscp/[107X)  for the
  computational algebra system [5XGAP[105X.[133X
  
  
  -------------------------------------------------------
  [1XCopyright[101X
  [33X[0;0Y© 2007-2025 by Olexandr Konovalov and Steve Linton[133X
  
  [33X[0;0Y[5XSCSCP[105X  is  free software; you can redistribute it and/or modify it under the
  terms  of  the  GNU General Public License as published by the Free Software
  Foundation;  either  version 2 of the License, or (at your option) any later
  version.      For      details,      see      the     FSF's     own     site
  [7Xhttps://www.gnu.org/licenses/gpl.html[107X.[133X
  
  [33X[0;0YIf you obtained [5XSCSCP[105X, we would be grateful for a short notification sent to
  one of the authors.[133X
  
  [33X[0;0YIf  you  publish  a  result  which  was partially obtained with the usage of
  [5XSCSCP[105X, please cite it in the following form:[133X
  
  [33X[0;0YO.  Konovalov  and  S.  Linton.  [13XSCSCP  ---  Symbolic  Computation  Software
  Composability          Protocol,         Version         2.4.4;[113X         2025
  ([7Xhttps://gap-packages.github.io/scscp/[107X).[133X
  
  
  -------------------------------------------------------
  [1XAcknowledgements[101X
  [33X[0;0YThe development of the [5XSCSCP[105X package has been supported by:[133X
  
  [30X    [33X[0;6YEU  FP6  Programme  project  026133  [21XSCIEnce  -  Symbolic  Computation
        Infrastructure for Europe[121X.[133X
  
  [30X    [33X[0;6YOpenDreamKit  Horizon  2020  European Research Infrastructures project
        #676541 (see [7Xhttps://opendreamkit.org/[107X).[133X
  
  
  -------------------------------------------------------
  [1XColophon[101X
  [33X[0;0YVersions history:[133X
  
  [30X    [33X[0;6YVersion 0.1 - first half of 2007;[133X
  
  [30X    [33X[0;6YVersion 0.2 - December 2007;[133X
  
  [30X    [33X[0;6YVersion 0.3 - May 2008;[133X
  
  [30X    [33X[0;6YVersion 0.4 - August 2008;[133X
  
  [30X    [33X[0;6YVersion 1.0 - March 2009;[133X
  
  [30X    [33X[0;6YVersion 1.1 - May 2009;[133X
  
  [30X    [33X[0;6YVersion 1.2 - March 2010.[133X
  
  [30X    [33X[0;6YVersion 2.0 - October 2011.[133X
  
  [30X    [33X[0;6YVersion 2.1 - March 2012.[133X
  
  [30X    [33X[0;6YVersion 2.2 - February 2017.[133X
  
  [30X    [33X[0;6YVersion 2.3 - May 2019.[133X
  
  
  -------------------------------------------------------
  
  
  [1XContents (scscp)[101X
  
  1 [33X[0;0YPreface[133X
  2 [33X[0;0YInstallation[133X
    2.1 [33X[0;0YInstallation and system requirements[133X
    2.2 [33X[0;0YConfiguration files[133X
  3 [33X[0;0YUsing streams[133X
    3.1 [33X[0;0YInput-output TCP streams[133X
      3.1-1 IsInputOutputTCPStream
      3.1-2 IsInputOutputTCPStreamRep
      3.1-3 InputOutputTCPStream
    3.2 [33X[0;0YExample of client-server communication via input-output TCP streams[133X
  4 [33X[0;0YMessage exchange by [5XSCSCP[105X[133X
    4.1 [33X[0;0YCommunication with the [5XSCSCP[105X server[133X
      4.1-1 StartSCSCPsession
      4.1-2 OMPutProcedureCall
      4.1-3 SCSCPwait
      4.1-4 OMGetObjectWithAttributes
    4.2 [33X[0;0YCommunication with the [5XSCSCP[105X client[133X
      4.2-1 OMPutProcedureCompleted
      4.2-2 OMPutProcedureTerminated
    4.3 [33X[0;0YExample: [5XSCSCP[105X session[133X
  5 [33X[0;0YRunning SCSCP server[133X
    5.1 [33X[0;0YInstallation of [5XSCSCP[105X procedures[133X
      5.1-1 InstallSCSCPprocedure
      5.1-2 OMsymRecord
    5.2 [33X[0;0YStarting SCSCP server[133X
      5.2-1 RunSCSCPserver
    5.3 [33X[0;0YProcedures to get information about the [5XSCSCP[105X server[133X
      5.3-1 GetServiceDescription
      5.3-2 GetAllowedHeads
      5.3-3 IsAllowedHead
      5.3-4 GetTransientCD
      5.3-5 GetSignature
  6 [33X[0;0YClient's functionality[133X
    6.1 [33X[0;0Y[5XSCSCP[105X connections[133X
      6.1-1 IsSCSCPconnection
      6.1-2 NewSCSCPconnection
      6.1-3 CloseSCSCPconnection
    6.2 [33X[0;0YProcesses[133X
      6.2-1 IsProcess
      6.2-2 NewProcess
      6.2-3 CompleteProcess
      6.2-4 TerminateProcess
    6.3 [33X[0;0YAll-in-one tool: sending request and getting result[133X
      6.3-1 EvaluateBySCSCP
    6.4 [33X[0;0YSwitching between Binary and XML [5XOpenMath[105X Encodings[133X
      6.4-1 SwitchSCSCPmodeToBinary
    6.5 [33X[0;0YRemote objects[133X
      6.5-1 StoreAsRemoteObjectPersistently
      6.5-2 IsRemoteObject
      6.5-3 RemoteObjectsFamily
      6.5-4 RetrieveRemoteObject
      6.5-5 UnbindRemoteObject
  7 [33X[0;0YExamples of [5XSCSCP[105X usage[133X
    7.1 [33X[0;0YProviding services with the SCSCP package[133X
    7.2 [33X[0;0YIdentifying groups of order 512[133X
  8 [33X[0;0YParallel computing with [5XSCSCP[105X[133X
    8.1 [33X[0;0YManaging multiple requests[133X
      8.1-1 SynchronizeProcesses
      8.1-2 FirstProcess
      8.1-3 SCSCPservers
      8.1-4 ParQuickWithSCSCP
      8.1-5 FirstTrueProcess
    8.2 [33X[0;0YMasterWorker skeleton[133X
      8.2-1 ParListWithSCSCP
      8.2-2 SCSCPreset
      8.2-3 SCSCPLogTracesToGlobal
    8.3 [33X[0;0YExample: parallelising Karatsuba multiplication for polynomials[133X
  9 [33X[0;0YService functions[133X
    9.1 [33X[0;0YPinging [5XSCSCP[105X servers[133X
      9.1-1 PingSCSCPservice
      9.1-2 PingStatistic
    9.2 [33X[0;0YInfo classes for [5XSCSCP[105X[133X
      9.2-1 InfoSCSCP
      9.2-2 InfoMasterWorker
    9.3 [33X[0;0YOther [5XSCSCP[105X Utilities[133X
      9.3-1 DateISO8601
      9.3-2 CurrentTimestamp
      9.3-3 Hostname
      9.3-4 MemoryUsageByGAPinKbytes
      9.3-5 LastReceivedCallID
      9.3-6 IO_PickleToString
      9.3-7 IO_UnpickleFromString
  
  
  [32X
