3 ms·
If I unroll the main while loop to handle 4x as much each time through the loop in the SWAR-version, the runtime drops to 0.0562s (average 10 runs). That's an
by fuber2018 3y ago
If I unroll the main while loop to handle 4x as much each time through the loop in the SWAR-version, the runtime drops to 0.0562s (average 10 runs).
That's an overall 57.5x speedup.
- fuber2018 3y agoIf I convert the unrolled-64-bit SWAR function to use 32-bit chunks instead, average runtime almost doubles, approx. 0.1s now. Need sleep now.
- fuber2018 3y agoIf I unroll the 64-bit SWAR version by 8x instead of 4x, the runtime is reduced by another 10% over the 4x-unrolled SWAR version. Diminishing returns...