sampling : avoid expensive softmax during greedy sampling (#9605)
* sampling : avoid expensive softmax during greedy sampling
ggml-ci
* speculative : fix default RNG seed + set sparams.n_probs
* Update tests/test-sampling.cpp
Co-authored-by: slaren <slarengh@gmail.com>
* sampling : add clarifying comment [no ci]
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Co-authored-by: slaren <slarengh@gmail.com>