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support memory_pool_host page first direct layout (#10031)

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Co-authored-by: Zhiqiang Xie <xiezhq@stanford.edu>
This commit is contained in:
huangtingwei
2025-09-12 14:19:44 +08:00
committed by GitHub
parent 53ca15529a
commit b4c2c421e9
3 changed files with 114 additions and 47 deletions
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9
python/sglang/srt/managers/cache_controller.py
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@@ -532,9 +532,12 @@ class HiCacheController:
host_indices = host_indices.to(self.device, non_blocking=True)
return host_indices, device_indices
elif self.io_backend == "direct":
device_indices = device_indices.cpu()
host_indices, idx = host_indices.sort()
return host_indices, device_indices.index_select(0, idx)
if self.mem_pool_host.layout == "layer_first":
device_indices = device_indices.cpu()
host_indices, idx = host_indices.sort()
return host_indices, device_indices.index_select(0, idx)
elif self.mem_pool_host.layout == "page_first_direct":
return host_indices, device_indices.cpu()
else:
raise ValueError(f"Unsupported io backend")