Lynne: > Dec 23, 2023, 00:53 by jamr...@gmail.com: > >> On an Intel Core i7 12700k: >> >> decorrelate_ls_c: 814.3 >> decorrelate_ls_sse2: 165.8 >> decorrelate_ls_avx2: 101.3 >> decorrelate_sf_c: 1602.6 >> decorrelate_sf_sse4: 640.1 >> decorrelate_sf_avx2: 324.6 >> decorrelate_sm_c: 1564.8 >> decorrelate_sm_sse2: 379.3 >> decorrelate_sm_avx2: 203.3 >> decorrelate_sr_c: 785.3 >> decorrelate_sr_sse2: 176.3 >> decorrelate_sr_avx2: 99.8 >> >> Signed-off-by: James Almer <jamr...@gmail.com> >> > > Even better on a Zen3: > checkasm: all 8 tests passed > decorrelate_ls_c: 111.1 > decorrelate_ls_sse2: 272.6 > decorrelate_ls_avx2: 94.1 > decorrelate_sf_c: 170.6 > decorrelate_sf_sse4: 400.1 > decorrelate_sf_avx2: 196.1 > decorrelate_sm_c: 187.6 > decorrelate_sm_sse2: 383.1 > decorrelate_sm_avx2: 179.1 > decorrelate_sr_c: 102.6 > decorrelate_sr_sse2: 272.6 > decorrelate_sr_avx2: 94.1 >
The SSE2 version is worse than the C version? Does this happen for more DSP code? (For decorrelate_sf_c, the C version is still the best and the gain of AVX2 over C is not good for the other three either.) - Andreas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
