# V2 timing log -- solo append, mai troncato/sovrascritto (vedi README.md) # Nessuna entry ancora -- popolato incrementalmente man mano che avanza lo sviluppo V2. [2026-09-05] EXP-0001 -- neural_processor (P_IN=8, ACC_WIDTH=32) nextpnr-ecp5 --45k --package CABGA381 --speed 8 --freq 80 --lpf-allow-unconstrained Fmax: 183.12 MHz -- PASS at 80 MHz (real place&route measurement) Critical path: job_ready -> TRELLIS_IO output pad (i.e. the design's own logic is NOT the bottleneck at this Fmax -- an unconstrained output pin dominates; a real system-level Fmax will differ once this signal is consumed on-chip instead of driven to a pad in isolation). Log: hardware/v2/synthesis/neural_processor_p8/nextpnr.log WNS/TNS: not reported by this nextpnr version in this invocation. [2026-09-05] EXP-0002 -- neural_processor (P_IN=8, ACC_WIDTH=24) Same command as above, ACC_WIDTH=24 build. Fmax: 176.21 MHz -- PASS at 80 MHz (real place&route measurement) Delta vs ACC_WIDTH=32: -6.91 MHz (-3.8%) despite FEWER resources -- attributed to placement noise, not a real architectural effect (no seed sweep run to confirm either way -- see experiments.log EXP-0002 and benchmark.log). Log: hardware/v2/synthesis/ neural_processor_p8_acc24/nextpnr.log