The M2 fetch bound gave every codec n + n/4 + 4096 stored bytes, but
ZFP's fixed-rate mode stores up to 64 bits per value, doubling 4-byte
types: 60 of the 2205 zfp_interop datasets (rate 64, f4/i4) failed with
'compressed stream ends early' once M2 and ZFP were merged.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>