decode-source: both -> both
ctx~512 out=32: in=633 out=32 decode=10.96 tok/s  e2e=9.83 tok/s (warmup 11.08)  stream/usage=0.9616
ctx~2048 out=128: in=2501 out=89 decode=10.66 tok/s  e2e=9.16 tok/s (warmup 10.61)  stream/usage=0.9540
ctx~3800 out=32: FAILED HTTP Error 400 {"detail":"prompt is 4630 tokens and the context
  bound is 4096, leaving no room to decode. Start the server with a larger --seq."}