Abstract: In an authentication server performing an authentication process to authenticate a user using a terminal with the terminal by means of a TLS authentication in tunnel using a TLS parameter having preliminarily been acquired, user identification information and the TLS parameter are included in a transfer request signal, and transmitted to a distribution server, when user identification information transmitted from the terminal does not exist in an authentication database. A search is conducted in a distribution server database for authentication server identification information associated with the user identification information included in the transfer request signal. The user identification information and the TLS parameter are transmitted to the authentication server assigned with the authentication server identification information that has been searched for.

Abstract: A method is disclosed for optimizing an MPI procedure by altering to a procedure other than the MPI procedure invocation portion or by altering the execution sequence. In this method of optimizing a program that uses MPI during compiling, optimization of an MPI procedure is realized by detecting an MPI procedure invocation portion within a received source program, and then altering the MPI procedure invocation portion to a procedure other than the detected MPI procedure invocation portion or by altering the execution sequence.

Abstract: A method is disclosed for optimizing an MPI procedure by altering to a procedure other than the MPI procedure invocation portion or by altering the execution sequence. In this method of optimizing a program that uses MPI during compiling, optimization of an MPI procedure is realized by detecting an MPI procedure invocation portion within a received source program, and then altering the MPI procedure invocation portion to a procedure other than the detected MPI procedure invocation portion or by altering the execution sequence.