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HBM AXI Switch Connections enable global addressing from any AXI port to any portion of the HBM, but the shared connections limit the maximum throughput laterally to 50% of the full bandwidth.For East/West transactions within an AXI Switch instance there is no lateral performance loss.For East/West transactions which leave an AXI Switch instance there will be a lateral throughput performance loss.A Write sequence with near 100% MC throughput results in the largest drop in throughput due to the extra switching cycle. As a result, smaller blocks have a larger percentage loss than larger
blocks. Therefore, in order to optimize HBM access scheduling.
we propose a custom crossbar to replace HBM¡¯s Built in
crossbar. Resolving the problem of the limited number of
lateral connections and try to make data arrive at the same
time to improve the uniformity. |
IEEE/ICACT20230043 Slide.06
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