[SYCLomatic] Simplify segmented sort algorithms #1347
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Signed-off-by: Dan Hoeflinger <[email protected]>
yihanwg
reviewed
Oct 25, 2023
| @@ -2212,17 +2148,11 @@ segmented_sort_keys( | |||
| dpct::internal::segmented_sort_keys_by_parallel_for_of_sorts( | |||
| ::std::forward<Policy>(policy), keys_in, keys_out, n, nsegments, | |||
| begin_offsets, end_offsets, descending, begin_bit, end_bit); | |||
| } else if (nsegments < 512) // for loop of parallel sorts when we have a small | |||
| // number of total sorts to limit total overhead | |||
| } else | |||
yihanwg
reviewed
Oct 25, 2023
| @@ -2272,19 +2202,12 @@ segmented_sort_pairs( | |||
| ::std::forward<Policy>(policy), keys_in, keys_out, values_in, | |||
| values_out, n, nsegments, begin_offsets, end_offsets, descending, | |||
| begin_bit, end_bit); | |||
| } else if (nsegments < 512) // for loop of parallel sorts when we have a small | |||
| // number of total sorts to limit total overhead | |||
| } else | |||
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Remove the two pair sorts algorithm options from segmented sort APIs. This shouldn't hurt much performance wise at runtime, as most cases will not reach this code, but it will significantly reduce the number of kernels required to JIT compile.
Must be preceded by merging of oneapi-src/SYCLomatic-test#483, to remove the direct testing of this internal API.