Use tokenizer.is_eos() (multi-eos) for generation termination in both PP
and TP engines instead of a single eos id, so gpt-oss stops on <|return|>
/<|call|>/<|endoftext|>.
In the TP engine, optionally apply a repetition penalty on the greedy
decode path (XSERV_REP_PENALTY>1 over XSERV_REP_WINDOW recent tokens; off
by default) to break greedy repetition loops.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
pp_engine::run_pp: stage-0 coordinator (scheduler/tokenizer/sampling +
stop logic) on the calling thread, worker stage threads for 1..P. Each
step the coordinator embeds + runs its layers, then the hidden state is
handed stage->stage over NCCL P2P; the last stage samples and returns
the token to stage 0 over an in-process channel. v1 is serial (one
request, one token/step) — correctness first; throughput via microbatch
overlap is future work.
main: wire --pp N (mutually exclusive with --tp).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
