TL/UCP: add reduce srg knomial #1058
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Sergei-Lebedev
commented
Dec 18, 2024
| reduce/reduce.c \ | ||
| reduce/reduce_knomial.c \ | ||
| reduce/reduce_dbt.c \ | ||
| reduce/reduce_srg_knomial.c |
| @@ -499,6 +513,9 @@ ucc_tl_ucp_reduce_scatter_knomial_init_r(ucc_base_coll_args_t *coll_args, | |||
| ucc_kn_rsx_pattern_init(size, rank, radix, | |||
| count, &task->reduce_scatter_kn.p); | |||
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| } else if (ct == UCC_COLL_TYPE_REDUCE) { | |||
| ucc_kn_rsx_pattern_init(size, VRANK(rank, coll_args->args.root, size), | |||
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add reordering for reduce
| UCC_TL_TEAM_SIZE(tl_team), | ||
| count); | ||
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| /* 1st step of reduce: knomial reduce_scatter */ |
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move comment up
| cfg_radix = ucc_tl_ucp_get_radix_from_range(tl_team, | ||
| count * ucc_dt_size(dt), | ||
| mt, p, 4); | ||
| radix = ucc_knomial_pattern_get_min_radix(cfg_radix, |
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add tl_trace
| args.args.dst.info.buffer = rs_rbuf; | ||
| args.args.mask |= UCC_COLL_ARGS_FIELD_FLAGS; | ||
| args.args.flags |= UCC_COLL_ARGS_FLAG_IN_PLACE; | ||
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rem empty line
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What
Add reduce srg knomial algorithm to TL UCP
Why ?
Improves performance of large msg reduce collective
How ?
Implemented as schedule of reduce scatter knomial followed by gather knomial