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+title = "[arXiv] Interconnect Bandwidth Heterogeneity on AMD MI250x and Infinity Fabric"
+date = 2022-02-28T00:00:00  # Schedule page publish date.
+draft = false
+
+math = false
+
+tags = ["ROCm"]
++++
+
+**Carl Pearson**
+
+  Demand for low-latency and high-bandwidth data transfer between GPUs has
+driven the development of multi-GPU nodes. Physical constraints on the
+manufacture and integration of such systems has yielded heterogeneous
+intra-node interconnects, where not all devices are connected equally. The next
+generation of supercomputing platforms are expected to feature AMD CPUs and
+GPUs. This work characterizes the extent to which interconnect heterogeneity is
+visible through GPU programming APIs on a system with four AMD MI250x GPUs, and
+provides several insights for users of such systems.
+
+* [arxiv](https://arxiv.org/abs/2302.14827)