Geyser-2: The second prototype CPU with fine-grained run-time power gating

L. Zhao, D. Ikebuchi, Y. Saito, M. Kamata, N. Seki, Y. Kojima, H. Amano, S. Koyama, T. Hashida, Y. Umahashi, D. Masuda, K. Usami, K. Kimura, M. Namiki, S. Takeda, H. Nakamura, M. Kondo