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Posted to commits@gluten.apache.org by "zhztheplayer (via GitHub)" <gi...@apache.org> on 2024/08/21 08:24:25 UTC
[I] [VL] Limit Velox global memory manager's usage [incubator-gluten]
zhztheplayer opened a new issue, #6960:
URL: https://github.com/apache/incubator-gluten/issues/6960
### Description
It's observed that Velox backend uses more memory than we configured. Which is perhaps related to the untracked Velox global memory manager.
We should set a capacity according to Spark overhead size to [here](https://github.com/apache/incubator-gluten/blob/63144566d50a697daebdf2f3c569bddc44e398a5/cpp/velox/compute/VeloxBackend.cc#L130) to limit that memory manager's usage.
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Re: [I] [VL] Limit Velox global memory manager's usage [incubator-gluten]
Posted by "FelixYBW (via GitHub)" <gi...@apache.org>.
FelixYBW commented on issue #6960:
URL: https://github.com/apache/incubator-gluten/issues/6960#issuecomment-2302695290
@marin-ma Is the compression buffer retained in shuffle? if not we can use the global memory allocator to allocate it.
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Re: [I] [VL] Limit Velox global memory manager's usage [incubator-gluten]
Posted by "FelixYBW (via GitHub)" <gi...@apache.org>.
FelixYBW commented on issue #6960:
URL: https://github.com/apache/incubator-gluten/issues/6960#issuecomment-2302683617
The global memory allocation is used for spill's compression buffer. The memory is counted into executor.overhead memory in Spark. We can do the same for Gluten.
In spark, the overhead memory includes reducer's netty memory, compression buffer memory, the memory native library allocated.
In Gluten the overhead memory includes reducer's netty memory, memory using global allocator, all the std::container's memory.
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