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Single Inner Buffer for Partition-wise GpuJoin #801

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kaigai opened this issue Jul 4, 2024 · 0 comments
Open

Single Inner Buffer for Partition-wise GpuJoin #801

kaigai opened this issue Jul 4, 2024 · 0 comments
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feature developer considers it is the feature to be supported on the future version
Milestone
v5.3

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@kaigai
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kaigai commented Jul 4, 2024 •
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Append
 +- GpuJoin on ptable_1
 |   + GpuScan on i_table
 +- GpuJoin on ptable_2
 |   + GpuScan on i_table
 +- GpuJoin on ptable_3
 |   + GpuScan on i_table
 +- GpuJoin on ptable_4
     + GpuScan on i_table

であるケースで、現在の実装は i_table のバッファを４つ重複して持ってしまう。
i_tableが小さければ良いが、大きい場合、GPUメモリを食いつくしてしまう。

Inner-Bufferを共有する事でGPUメモリを節約する。

関連issue #802
@kaigai kaigai added the feature developer considers it is the feature to be supported on the future version label Jul 4, 2024
@kaigai kaigai added this to the v5.3 milestone Jul 4, 2024
@kaigai kaigai mentioned this issue Jul 4, 2024
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