Moving spectral embedding and kernel gramm APIs to cuVS (#463)

Partially addresses #455

Authors:
  - Corey J. Nolet (https://github.com/cjnolet)
  - Ben Frederickson (https://github.com/benfred)

Approvers:
  - Ben Frederickson (https://github.com/benfred)
  - Kyle Edwards (https://github.com/KyleFromNVIDIA)
  - Bradley Dice (https://github.com/bdice)

URL: #463

build.sh

@@ -76,8 +76,8 @@ BUILD_REPORT_METRICS=""
 BUILD_REPORT_INCL_CACHE_STATS=OFF
 BUILD_SHARED_LIBS=ON
 
-TEST_TARGETS="NEIGHBORS_ANN_CAGRA_TEST"
-ANN_BENCH_TARGETS="CUVS_ANN_BENCH_ALL"
+TEST_TARGETS=""
+ANN_BENCH_TARGETS=""
 
 CACHE_ARGS=""
 NVTX=ON
@@ -273,14 +273,6 @@ fi
 if hasArg tests || (( ${NUMARGS} == 0 )); then
     BUILD_TESTS=ON
     CMAKE_TARGET="${CMAKE_TARGET};${TEST_TARGETS}"
-
-    # Force compile library when needed test targets are specified
-    if [[ $CMAKE_TARGET == *"CAGRA_C_TEST"* || \
-          $CMAKE_TARGET == *"INTEROP_TEST"* || \
-          $CMAKE_TARGET == *"NEIGHBORS_ANN_CAGRA_TEST"* ]]; then
-      echo "-- Enabling compiled lib for gtests"
-      COMPILE_LIBRARY=ON
-    fi
 fi
 
 if hasArg bench-ann || (( ${NUMARGS} == 0 )); then

cpp/CMakeLists.txt

@@ -324,6 +324,9 @@ if(BUILD_SHARED_LIBS)
     src/cluster/kmeans_transform_float.cu
     src/cluster/single_linkage_float.cu
     src/core/bitset.cu
+    src/distance/detail/kernels/gram_matrix.cu
+    src/distance/detail/kernels/kernel_factory.cu
+    src/distance/detail/kernels/kernel_matrices.cu
     src/distance/detail/pairwise_matrix/dispatch_canberra_float_float_float_int.cu
     src/distance/detail/pairwise_matrix/dispatch_canberra_half_float_float_int.cu
     src/distance/detail/pairwise_matrix/dispatch_canberra_double_double_double_int.cu
@@ -370,6 +373,7 @@ if(BUILD_SHARED_LIBS)
     src/distance/distance.cu
     src/distance/pairwise_distance.cu
     src/distance/sparse_distance.cu
+    src/embed/spectral.cu
     src/neighbors/brute_force.cu
     src/neighbors/brute_force_serialize.cu
     src/neighbors/cagra_build_float.cu

cpp/include/cuvs/cluster/agglomerative.hpp

@@ -18,6 +18,7 @@
 
 #include <cuvs/distance/distance.hpp>
 #include <optional>
+
 #include <raft/core/device_mdspan.hpp>
 #include <raft/core/resources.hpp>