The NIMS-CMS workshop on “Model and simulation of complex matter”, where we invited distinguished professors including Prof. Michele Parrinello (ETH Zurich), Prof. Michael L. Klein (Temple Univ.), Prof. Takao Kotani (Univ. of Tottori), and Dr. Bernd Ensing (Univ. of Amsterdam), was held on November 14, 2014. Research results at MANA were announced and lively question-and-answer sessions and exchanges of ideas were conducted. After the workshop, an exchange meeting was held and the participants enjoyed conversation.