Embedded Computing Lab Chia-Lin Yang Department of Computer Science and Information Engineering National Taiwan University Website:

Embedded Computing Lab  8 Ph.D students, 9 master students  Research Directions Architecture Design  Low-power architecture  Memory hierarchy design  Multicore/GPU architecture design System-Level Synthesis  ESL for platform-based SOC  Task scheduling/placement for FPGAs  Task scheduling/routing for microfluidic biochips

The Bridge Connecting Hardware and Software

Mission Innovative system architectural design to meet the performance/power demands for future mobile cloud computing

ECO System of Virtualized Mobile Cloud Computing Smart Phone Tablet PC E-book Reader Cloud Server virtualization Computation 5 GPUs Storage Game console

The amount of data being created is growing significantly faster than Moore’s law, e.g., from 5 exabytes (10^18), in 2002 to 280 exabytes in 2009 Partnership with 旺宏, 鈺創 From Micro-processors to Nanostores: rethinking data-centric systems Storage Architecture for Data-Centric Computing Fusion Memory Architecture

Optimizing NAND Flash-Based SSDs via Retention Relaxation First work to trade away the excess retention for optimizing the write speed or ECC cost/performance of SSDs in datacenters (published in USENIX FAST 2012) Result in 2x write speedup or 8x ECC cost reduction NAND standards: 1 to 10 years App. requirements: days or shorter vs. Retention-Aware SSD architecture Press Reports

Storage Industry in Taiwan QNAP ( 威聯通 ) Promising Taiwan-based storage provider Western Digital (WD) World’s leading hard disk drive supplier Set up its first oversea R&D center in Taiwan in 2012 …

GPU Virtualization CPU Server user CPU Server switch user GPU server Virtualization Layer Virtualization Layer GPU is gaining its popularity in clouds 3 of top 10 fastest supercomputers in the world use GPUs GPU virtualization is an open problem Non-preemptive nature of GPU makes it a challenging problem for QoS consideration

Heterogeneous Computing Platform Integrated CPU/GPU architecture is the future trend for many-core architecture E.g. AMD Fusion, Intel Sandybridge, ARM Mali and NVIDIA Tegra We have developed the first cycle-level GPU simulation framework for both graphics and GPGPU applications Memory system optimization is crucial for the integrated architecture Interference between CPU and GPU 3D-stacked memory Usage of Non-Volatile Memory Partnership with Intel and 工研院 Intel Sandy Bridge AMD Fusion Issues for CPU/GPU integration with 3D-stacked memory

Why Join Embedded Computing Lab? What’s missing in Taiwan’s Industry? Application, e.g., smart phone app. ASIC, e.g., mpeg decoder DRAM chips Flash memory chips System-on-Chip China HPC. 天河一號 No #1 Super Computer -> Intel Xeon, Nvidia Tesla -> Next-generation -> GodSon CPUs Platform/System Architecture Design System Software SW/HW Co-Design

Why Join Embedded Computing Lab? Strong industrial alliance

成為一個炙手可熱的人才 ! 最前瞻的研究 ! IEEE Micro’10, first paper from Taiwan in 15 years USENIX Fast’12, first paper from Taiwan ISLPED’09 Best Paper Award ICCAD’09 Best Paper Nomination VLSI-CAD’09 Best Paper Nomination 與世界接軌 ! Internship at International Research Lab E.g., IBM Austin Research Lab, Intel Research Lab Why Join Embedded Computing Lab? System Software

Join Us !!!! Please stop by at my office CSIE 411,