gem5-gpu: A Heterogeneous CPU-GPU Simulator

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Provided by: University of Wisconsin-La Crosse
Topic: Hardware
Format: PDF
gem5-gpu is a new simulator that models tightly integrated CPU-GPU systems. It builds on gem5, a modular full-system CPU simulator, and GPGPU-Sim, a detailed GPGPU simulator. gem5-gpu routes most memory accesses through ruby, which is a highly configurable memory system in gem5. By doing this, it is able to simulate many system configurations, ranging from a system with coherent caches and a single virtual address space across the CPU and GPU to a system that maintains separate GPU and CPU physical address spaces. gem5-gpu can run most unmodified CUDA 3.2 source code.
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