Cai Yudong

/assign @congqixia

> In segcore/knowhere, openmp will create thread independently for each cgo call. And it seems that event these threads could be reused, there are no way to recycle them. >...

hi @jiaoew1991 , I dump out the config before knowhere API is called, you can see "nprobe" setting is already missing. You need check what causes "nprobe" setting missing from...

maybe duplicate with #17277

> @cydrain @xiaofan-luan what's the status of #17353? found it in the previous issue but it was never merged. as I explain in previous comments, we have not found the...

query with following parameters: ``` index type: IVF_SQ8 metric type: L2 nlist: 1024 nprobe: 128 ``` collect more terminate logs: log1 [querynode.log](https://github.com/milvus-io/milvus/files/9330980/querynode.log) ``` [2022/08/03 12:20:33.638 +00:00] [DEBUG] [querynode/validate.go:110] ["read target...

There are 2 issues in this case which cause process terminated 1. a legacy check fail in faiss (Error: 'key < (idx_t)nlist' failed: Invalid key=139928558108992 nlist=447) -- it must be...

Test memory overflow with tool valgrind or sanitize on Knowhere, no findings. [val.log](https://github.com/milvus-io/milvus/files/9258791/val.log)

Try to build Milvus with knowhere enabled following sanitize parameters: ``` append_flags( CMAKE_CXX_FLAGS FLAGS "-fsanitize=address" "-fno-omit-frame-pointer" "-fno-stack-protector" "-fno-var-tracking" "-lasan" "-g" ) ``` Launch Milvus in the normal way, Milvus cannot...

updated 2022/08/08 Some limitations about this issue: 1. cannot get user data and script 2. cannot reproduce this issue with randomly generate data 50000 (dim=3840) vector data, create IVF_SQ8 L2...