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${ noResults }
6 Commits (2f8bf90054a5f7455f35b8705163f81c4413d779)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Rémi Denis-Courmont
|
ca664f2254 |
lavc/flacdsp: R-V V LPC16 function
In this case, the inner loop computing the scalar product can be reduced to just one multiplication and one sum even with 128-bit vectors. The result is a lot simpler, but also brings more modest performance gains: flac_lpc_16_13_c: 15241.0 flac_lpc_16_13_rvv_i32: 11230.0 flac_lpc_16_16_c: 17884.0 flac_lpc_16_16_rvv_i32: 12125.7 flac_lpc_16_29_c: 27847.7 flac_lpc_16_29_rvv_i32: 10494.0 flac_lpc_16_32_c: 30051.5 flac_lpc_16_32_rvv_i32: 10355.0 |
1 year ago |
|
Rémi Denis-Courmont
|
295092b46d |
lavc/flacdsp: R-V V LPC32
The entire set of 32 coefficients and corresponding past 32 samples can fit in a single vector (with LMUL=8) exactly, but... since widening double the needed vector sizes, we still end up too short with 128-bit vectors. This adds a very simple version for future 256+-bit hardware, and for pred_orders values up to 16, and a bit more involved loop for for 128-bit hardware with pred_orders between 17 and 32. With 128-bit hardware, the benchmarks look like this: flac_lpc_32_13_c: 30152.0 flac_lpc_32_13_rvv_i32: 10244.7 flac_lpc_32_16_c: 37314.2 flac_lpc_32_16_rvv_i32: 10126.2 flac_lpc_32_29_c: 61910.0 flac_lpc_32_29_rvv_i32: 14495.2 flac_lpc_32_32_c: 68204.0 flac_lpc_32_32_rvv_i32: 13273.7 |
1 year ago |
|
Rémi Denis-Courmont
|
07c303b708 |
lavc/flacdsp: R-V V decorrelate_indep 16-bit packed
flac_decorrelate_indep2_16_c: 981.7 flac_decorrelate_indep2_16_rvv_i32: 199.2 flac_decorrelate_indep4_16_c: 1749.7 flac_decorrelate_indep4_16_rvv_i32: 401.2 flac_decorrelate_indep6_16_c: 2517.7 flac_decorrelate_indep6_16_rvv_i32: 858.0 flac_decorrelate_indep8_16_c: 3285.7 flac_decorrelate_indep8_16_rvv_i32: 1123.5 |
1 year ago |
|
Rémi Denis-Courmont
|
fb0295e5fd |
lavc/flacdsp: R-V V decorrelate_indep 32-bit packed
flac_decorrelate_indep2_32_c: 981.7 flac_decorrelate_indep2_32_rvv_i32: 183.7 flac_decorrelate_indep4_32_c: 1749.7 flac_decorrelate_indep4_32_rvv_i32: 362.5 flac_decorrelate_indep6_32_c: 2517.7 flac_decorrelate_indep6_32_rvv_i32: 715.2 flac_decorrelate_indep8_32_c: 3285.7 flac_decorrelate_indep8_32_rvv_i32: 909.0 |
1 year ago |
|
Rémi Denis-Courmont
|
6183a69c0b |
lavc/flacdsp: R-V V decorrelate_ms packed
flac_decorrelate_ms_16_c: 585.5 flac_decorrelate_ms_16_rvv_i32: 263.0 flac_decorrelate_ms_32_c: 584.7 flac_decorrelate_ms_32_rvv_i32: 250.0 |
1 year ago |
|
Rémi Denis-Courmont
|
636ae0e0bc |
lavc/flacdsp: R-V V packed decorrelate_{l,r}s
flac_decorrelate_ms_16_c: 457.2 flac_decorrelate_ms_16_rvv_i32: 203.0 flac_decorrelate_ms_32_c: 457.2 flac_decorrelate_ms_32_rvv_i32: 203.5 flac_decorrelate_rs_16_c: 456.2 flac_decorrelate_rs_16_rvv_i32: 207.0 flac_decorrelate_rs_32_c: 456.2 flac_decorrelate_rs_32_rvv_i32: 210.5 |
1 year ago |