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replace the 'Differences' section with 'Multithreading'

This commit is contained in:
Jack O'Connor 2021-02-05 17:25:45 -05:00
parent 0c26ed52a8
commit aea29ace2d
1 changed files with 9 additions and 8 deletions
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c/README.md
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@ -259,12 +259,13 @@ example:
gcc -shared -O3 -o libblake3.so blake3.c blake3_dispatch.c blake3_portable.c
```
# Differences from the Rust Implementation
# Multithreading
The single-threaded Rust and C implementations use the same algorithms,
and their performance is the same if you use the assembly
implementations or if you compile the intrinsics-based implementations
with Clang. (Both Clang and rustc are LLVM-based.)
The C implementation doesn't currently include any multithreading
optimizations. OpenMP support or similar might be added in the future.
Unlike the Rust implementation, the C implementation doesn't currently support
multithreading. A future version of this library could add support by taking an
optional dependency on OpenMP or similar. Alternatively, we could expose a
lower-level API to allow callers to implement concurrency themselves. The
former would be more convenient and less error-prone, but the latter would give
callers the maximum possible amount of control. The best choice here depends on
the specific use case, so if you have a use case for multithreaded hashing in
C, please file a GitHub issue and let us know.