std::simd runs with nightly added DistDot, DistL2 on f32

Cargo.toml

@@ -61,8 +61,8 @@ cfg-if = { version = "1.0" }
 
 # for //
 parking_lot = "0.12"
-rayon = { version = "1.8" }
-num_cpus = { version = "1.15.0" }
+rayon = { version = "1.10" }
+num_cpus = { version = "1.16" }
 
 cpu-time = { version = "1.0" }
 num-traits = { version = "0.2" }
@@ -89,8 +89,7 @@ anyhow = { version = "1.0" }
 
 # x86_64 simd stuff , enabled by  simdeez_f feature 
 simdeez = { version = "1.0", optional = true }
-# beta 
-packed_simd = { version = "0.3", optional = true }
+
 
 # for benchmark reading, so the lbrary do not depend on hdf5 nor ndarray
 [dev-dependencies]
@@ -102,7 +101,7 @@ ndarray = { version = "0.15" }
 
 default = []
 
-# simd on x86/x86_64
+# feature for std simd on nightly
 stdsimd = []
+# feature for simd on stable for x86*
 simdeez_f = ["simdeez"]
-# a beta feature experimental

Changes.md

@@ -3,9 +3,9 @@
   when using mmap, the points less frequently used (points in lower layers) are preferentially mmap-ed while upper layers are preferentially 
   explcitly read from file.
 
-  Hnswio is now Sync (request from https://www.patreon.com/jodiethemathgenius)
+  Hnswio is now Sync.
 
-  feature stdsimd runs with nightly on Hamming with u32,u64 and DisL1 with f32
+  feature stdsimd, based on std::simd, runs with nightly on Hamming with u32,u64 and DisL1,DistL2, DistDot with f32
 
 - The **version 0.2** introduces 
     1. possibility to use mmap on the data file storing  the vectors represented in the hnsw structure. This is mostly usefule for
@@ -14,7 +14,7 @@
     In case of mmap usage, a dump after inserting new elements must ensure that the old file is not overwritten, so a unique file name is
   generated if necessary. See documentation of module Hnswio
 
-    1. the filtering trait
+    2. the filtering trait
 
 
 -  Upgrade of many dependencies. Change from simple_logger to env_logger. The logger is initialized one for all in file src/lib.rs and cannot be intialized twice. The level of log can be modulated by the RUST_LOG env variable on a module basis or switched off. See the *env_logger* crate doc.

README.md

@@ -48,11 +48,10 @@ Simd Avx2 implementation, currently based on the **simdeez** crate, is provided
 * The simd provided by the simdeez crate is accessible with the feature "simdeez_f" for x86_64 processors.
 Compile with **cargo build --release --features "simdeez_f"** ....
 To compile this crate on a M1 chip just do not activate this feature.
-As soon as std::simd lands in rust stable, it will be the default.
 
 * It is nevertheless possible to experiment with std::simd. Compiling with the feature stdsimd
-  (**cargo build --release --features "stdsimd"**), activates the transitory crate packed_simd, this requires rust nightly.
-  **only the Hamming distance with the u32x16 and u64x8 types and DistL1 on f32 are provided**.
+  (**cargo build --release --features "stdsimd"**), activates the  portable_simd features on rust nightly. 
+  **Only the Hamming distance with the u32x16 and u64x8 types and DistL1,DistL2 and DistDot on f32 are provided**.
 
 ### Julia interface