Pangaea: A Tightly-Coupled IA32 Heterogeneous Chip Multiprocessor

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Provided by: University of Bristol
Topic: Hardware
Format: PDF
Moore's law and the drive towards performance efficiency have led to the on-chip integration of general-purpose cores with special-purpose accelerators. Pangaea is a heterogeneous CMP design for non-rendering workloads that integrates IA32 CPU cores with non-IA32 GPU-class multicores, extending the current state-of-the-art CPU-GPU integration that physically \"Fuses\" existing CPU and GPU designs. Pangaea introduces a resource repartitioning of the GPU, where the hardware budget dedicated for 3Dspecific graphics processing is used to build more general purpose GPU cores and a 3-instruction extension to the IA32 ISA that supports tighter architectural integration and fine-grain shared memory collaborative multithreading between the IA32 CPU cores and the non-IA32 GPU cores.
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