fix a bug of getting wrong nprobe limitation in knowhere on GPU version (#2788)

* fix a bug of getting wrong nprobe limitation in knowhere on GPU version

Signed-off-by: cmli <chengming.li@zilliz.com>

* update changelog and fix build error

Signed-off-by: cmli <chengming.li@zilliz.com>

Co-authored-by: cmli <chengming.li@zilliz.com>

CHANGELOG.md

@@ -17,6 +17,7 @@ Please mark all change in change log and use the issue from GitHub
 -   \#2690 Remove body parser in show-partitions endpoints
 -   \#2692 Milvus hangs during multi-thread concurrent search
 -   \#2739 Fix mishards start failed
+-   \#2767 fix a bug of getting wrong nprobe limitation in knowhere on GPU version
 -   \#2776 Fix too many data copies during creating IVF index
 
 ## Feature

core/src/index/knowhere/knowhere/index/vector_index/ConfAdapter.cpp

@@ -10,23 +10,19 @@
 // or implied. See the License for the specific language governing permissions and limitations under the License.
 
 #include "knowhere/index/vector_index/ConfAdapter.h"
-
 #include <cmath>
 #include <memory>
 #include <string>
 #include <vector>
-
 #include "knowhere/index/vector_index/helpers/IndexParameter.h"
 
+#ifdef MILVUS_GPU_VERSION
+#include "faiss/gpu/utils/DeviceUtils.h"
+#endif
+
 namespace milvus {
 namespace knowhere {
 
-#if CUDA_VERSION > 9000
-#define GPU_MAX_NRPOBE 2048
-#else
-#define GPU_MAX_NRPOBE 1024
-#endif
-
 #define DEFAULT_MAX_DIM 32768
 #define DEFAULT_MIN_DIM 1
 #define DEFAULT_MAX_K 16384
@@ -116,7 +112,9 @@ IVFConfAdapter::CheckSearch(Config& oricfg, const IndexType type, const IndexMod
     static int64_t MAX_NPROBE = 999999;  // todo(linxj): [1, nlist]
 
     if (mode == IndexMode::MODE_GPU) {
-        CheckIntByRange(knowhere::IndexParams::nprobe, MIN_NPROBE, GPU_MAX_NRPOBE);
+#ifdef MILVUS_GPU_VERSION
+        CheckIntByRange(knowhere::IndexParams::nprobe, MIN_NPROBE, faiss::gpu::getMaxKSelection());
+#endif
     } else {
         CheckIntByRange(knowhere::IndexParams::nprobe, MIN_NPROBE, MAX_NPROBE);
     }