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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 |