Rearranged the rotm kernel to adapt to the architecture. #5053
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Signed-off-by: tingbo.liao <tingbo.liao@starfivetech.com>
Signed-off-by: tingbo.liao <tingbo.liao@starfivetech.com>
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Hi, martin-frbg:
In accordance with the suggestion put forward in PR #5038, we rearranged the rotm kernel to ensure its compatibility with the architecture. Additionally, we developed relevant test cases for conducting functional and performance verifications on K230 and K1 platforms.
The latest performance data are shown as below:
Parameter setting: OPENBLAS_LOOPS = 10000.
K230 [C908, vlen = 128]@1.6GHz:
| Cases | Scalar / MFlops | Optimized RVV / MFlops |
| srotm.goto | 872.52 | 1545.43 |
| drotm.goto | 797.53 | 1410.64 |
K1 [C908, vlen = 256]@1.6GHz:
| Cases | Scalar / MFlops | Optimized RVV / MFlops |
| srotm.goto | 896.42 | 1512.47 |
| drotm.goto | 819.14 | 1576.13 |
In the above data, the bigger value is, the better performance is.