CH-Abhinav commented on code in PR #16723:
URL: https://github.com/apache/lucene/pull/16723#discussion_r4159883179
##########
lucene/sandbox/src/java/org/apache/lucene/sandbox/codecs/faiss/FaissNativeWrapper.java:
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@@ -37,8 +38,44 @@
*/
@SuppressWarnings("restricted") // uses unsafe calls
final class FaissNativeWrapper {
- static {
+
+ static final String LOADED_LIBRARY = loadLibrary();
+
+ private static String loadLibrary() {
+ // Manual override via system property
+ String customLib = System.getProperty("lucene.faiss.libname");
+ if (customLib != null && customLib.isBlank() == false) {
+ System.loadLibrary(customLib);
+ return customLib;
+ }
+ // Try SIMD variants matching the CPU architecture
+ switch (Constants.OS_ARCH) {
+ case "amd64", "x86_64" -> {
+ if (Constants.HAS_AVX512 && tryLoad("faiss_c_avx512")) {
+ return "faiss_c_avx512";
+ }
+ if (Constants.HAS_AVX2 && tryLoad("faiss_c_avx2")) {
+ return "faiss_c_avx2";
+ }
+ }
+ case "aarch64" -> {
+ if (Constants.HAS_SVE && tryLoad("faiss_c_sve")) {
+ return "faiss_c_sve";
+ }
+ }
+ }
+ // Fallback to generic baseline
System.loadLibrary(FaissLibrary.NAME);
+ return FaissLibrary.NAME;
Review Comment:
Yeah I should have done this before.
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