Use 2inN modulator instead of prime number modulator to avoid expensive div

1 files changed, 2 insertions, 1 deletions

diff --git a/eval/src/vespa/eval/tensor/sparse/sparse_tensor.h b/eval/src/vespa/eval/tensor/sparse/sparse_tensor.h
index 78c69bd5e43..3eeb122f48c 100644
--- a/eval/src/vespa/eval/tensor/sparse/sparse_tensor.h
+++ b/eval/src/vespa/eval/tensor/sparse/sparse_tensor.h
@@ -21,7 +21,8 @@ namespace vespalib::tensor {
 class SparseTensor : public Tensor
 {
 public:
-    using Cells = vespalib::hash_map<SparseTensorAddressRef, double>;
+    using Cells = hash_map<SparseTensorAddressRef, double, hash<SparseTensorAddressRef>,
+            std::equal_to<SparseTensorAddressRef>, hashtable_base::and_modulator>;
 
     static constexpr size_t STASH_CHUNK_SIZE = 16384u;