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| author | Thomas Voss <mail@thomasvoss.com> | 2024-08-27 00:25:00 +0200 |
|---|---|---|
| committer | Thomas Voss <mail@thomasvoss.com> | 2024-08-27 00:25:00 +0200 |
| commit | 3b59bedbbb6e4aeaa584d14157aa92255b3a7031 (patch) | |
| tree | 47c5a7fd0b8e397d1704af5e4bea4bb2c5d4eca4 /c/simd-isascii/README | |
| parent | 9799ae3f29197eb65508e398d59591c238e59d6b (diff) | |
Add AVX-2
Diffstat (limited to 'c/simd-isascii/README')
| -rw-r--r-- | c/simd-isascii/README | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/c/simd-isascii/README b/c/simd-isascii/README new file mode 100644 index 0000000..22ba633 --- /dev/null +++ b/c/simd-isascii/README @@ -0,0 +1,8 @@ +You can generate test data via the following command, and then just +use ‘echo foo >>out’ to write some non-ASCII into the stream. + + $ tr -cd ' -~' </dev/urandom | head -c BYTES >out + +Findings: +1. GCC Doesn’t auto-vectorize the generic loop +2. The AVX-2 version out-performs AVX-512 by a huge margin |