scscp1 http://www.win.tue.nl/SCIEnce/cds/scscp1.ocd experimental 2009-06-22 1 12 This CD defines symbols for the description of the management of mathematical queries. In particular, it is used by the SCIEnce project [SCIEnce website] in the communication between a web service (i.e. computer algebra system, proof checker, etc) and a client. SCSCP is an abbreviation for "Symbolic Computation Software Composability Protocol" [SCSCP specification]. This version of the Content Dictionary agrees with version 1.3 of the SCSCP protocol. procedure_call The actual procedure call. Its only argument is an OpenMath Application, whose head symbol describes the procedure to be called, and whose arguments are the arguments to the procedure. localhost:26137:18668:s2sYf1pg 300000 40964 134217728 2 2 3 1 1 2 4 3 procedure_completed The result of a successful computation. Should come along with a call_id and, possibly, some extra information. a1d0c6e83f027327d8461063f4ac58a6726435287626925748508234281076009 Instead of the result, we may return a reference to the result, as follows: a1d0c6e83f027327d8461063f4ac58a67264352876 procedure_terminated The result of a failed computation. Should come along with a call_id, an error description, and possibly some extra information. a24904e5d3ed28eae9225fd787f64a71 21897 Segmentation fault call_id Uniquely identifies a procedure call. Used in subsequent communication, so the parties know which call they are talking about. a1d0c6e83f027327d8461063f4ac58a6 option_max_memory An option, to be given along with a procedure call, describing the maximum amount of memory (in bytes) the system should spend on this call. localhost:26137:18668:s2sYf1pg 20971520 option_min_memory An option, to be given along with a procedure call, describing the minimum amount of memory (in bytes) the system should be able to spend on this call. The idea is that in certain cases we know in advance that we will need a large amount of memory. If the system will never be able to provide that, it would be a waste of time and resources to even start the computation. localhost:26137:18668:s2sYf1pg 250971520 option_runtime An option, to be given along with a procedure call, describing the maximum amount of time (in milliseconds) the system should spend on this call. localhost:26137:18668:s2sYf1pg 600000 option_debuglevel An option, to be given along with a procedure call, describing the amount of debug information the client is interested in. Should be an integer. localhost:26137:18668:s2sYf1pg 2 option_return_cookie An option, to be given along with a procedure call, indicating that the client would like to have a cookie (i.e. a reference to an OpenMath object residing somewhere) as return value. localhost:26137:18668:s2sYf1pg The reply from the server should then look like: localhost:26137:18668:s2sYf1pg option_return_object An option, to be given along with a procedure call, indicating that the client would like to have the actual OpenMath object as return value. localhost:26137:18668:s2sYf1pg The reply from the server should then look like: localhost:26137:18668:s2sYf1pg42 option_return_nothing An option, to be given along with a procedure call, indicating that the client expects no return value. localhost:26137:18668:s2sYf1pg The reply from the server may then look like: localhost:26137:18668:s2sYf1pg info_memory A piece of information from the system, to be used along with a procedure_completed or procedure_terminated message, describing how much memory was spent on the calculation. It should be in bytes, denoted using an OMI. localhost:26137:18668:s2sYf1pg 134218000 info_runtime A piece of information from the system, to be used along with a procedure_completed or procedure_terminated message, describing how much cputime was spent on the calculation. It should be in milliseconds, denoted using an OMI. localhost:26137:18668:s2sYf1pg 76543 info_message A piece of information from the server, to be used along with a procedure_completed or procedure_terminated message, giving some additional information. The client may choose to present this information to its user. The argument is an OMSTR. localhost:26137:18668:s2sYf1pg The weather in St. Andrews is beautiful this time of year error_memory A description of the error that caused a procedure call to be terminated. This symbol is used with a procedure_terminated, when the system exceeded the amount of memory specified in the option_max_memory option given in the corresponding procedure call. It carries one argument: An OMSTR, which may be empty. error_runtime A description of the error that caused a procedure call to be terminated. This symbol is used with a procedure_terminated, when the system exceeded the runtime specified in the option_runtime option given in the corresponding procedure call. It carries one argument: An OMSTR, which may be empty. Note that this symbol is not intended to be used when a different runtime error occurred. In those cases, one should use error_system_specific. error_system_specific A description of the error that caused a procedure call to be terminated. This symbol is used with a procedure_terminated, when the error is specific to the system that carried out the calculation. This error must carry exactly one argument, and it must be an OMSTR describing the error that occurred. Error, the group identification for groups of size\n 3628800 is not available called from\n <function>( <arguments> ) called from read-eval-loop\n Entering break read-eval-print loop ...\n you can 'quit;' to quit to outer loop, or\n you can 'return;' to continue\n brk>\n