micheleandClaude Sonnet 5
8af16d3a12
Implements M6: dependency_manager.v tracks a table of node
descriptors (node_id/state/required_dependencies/resolved_
dependencies/producer_ids -- §10's exact field list), incrementing a
waiting node's resolved count whenever one of its listed producers
completes, transitioning it to READY once resolved==required, and
dispatching ready nodes to the Neural Director (M5) one at a time via
a backpressure-safe valid/ready interface.
Verified with Verilator on a small hand-built DAG: node0/node1 have no
dependencies (dispatch immediately); node2 depends on BOTH node0 AND
node1 ("dipendenze multiple") and stays WAITING until both complete,
confirmed via an explicit negative check after only one resolves;
node3 depends on node0 ALONE, demonstrating a single producer
("node0") satisfying two different consumers' dependencies
("risultati condivisi... piu' consumer") -- node3 fully, node2
partially. 4/4 tests pass.
Scope for this milestone (decisions.log DEC-0008): dependency
COUNTING/readiness only, no direct producer-to-consumer value
forwarding (§11 frames that as a "quando possibile" optimization, not
a correctness requirement -- deferred until real bandwidth
measurements justify it) and no node-slot reclamation after dispatch
(not exercised by any scenario built so far).
Real synthesis: 0 CHECK problems, 763 LUT4/474 FF/0 DSP/0 CCU2C. Real
place&route (module fits the TRELLIS_IO budget as a bare top-level
this time, no harness needed): Fmax 155.30 MHz, PASS at 80MHz.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013xXuuRUWZScuo1DeYJxs3v
49 lines
2.5 KiB
Plaintext
49 lines
2.5 KiB
Plaintext
# V2 synthesis 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)
|
|
LUT: 55 FF: 533 DSP(MULT18X18D): 8 BRAM: 0 CCU2C: 96
|
|
CHECK: 0 problems. 36 warnings, all "multiple conflicting drivers for
|
|
neural_processor.\gi" -- benign Yosys quirk for an `integer` used as
|
|
a synthesizable for-loop index in stage 0's unrolled always block,
|
|
not a real multi-driver conflict (cross-verified functionally
|
|
correct on 2 independent simulators). Log: hardware/v2/synthesis/
|
|
neural_processor_p8/yosys.log
|
|
|
|
[2026-09-05] EXP-0002 -- neural_processor (P_IN=8, ACC_WIDTH=24)
|
|
LUT: 49 FF: 509 DSP(MULT18X18D): 8 BRAM: 0 CCU2C: 88
|
|
CHECK: 0 problems, same 36 benign warnings as EXP-0001.
|
|
Log: hardware/v2/synthesis/neural_processor_p8_acc24/yosys.log
|
|
|
|
[2026-09-05] EXP-0003 -- neural_processor_array via
|
|
harness_neural_processor_array.v (synthesis-only wrapper, see
|
|
errors.log ERR-0005), N_PROCESSORS in {1,2,4,8}, P_IN=8
|
|
N=1: LUT=59 FF=409 MULT18X18D=8 CCU2C=96
|
|
N=2: LUT=106 FF=786 MULT18X18D=16 CCU2C=192
|
|
N=4: LUT=207 FF=1540 MULT18X18D=32 CCU2C=384
|
|
N=8: LUT=374 FF=3048 MULT18X18D=64 CCU2C=768
|
|
CHECK: 0 problems in all 4 configurations. Perfectly linear scaling in
|
|
N confirms no unintended cross-processor resource sharing (a first,
|
|
flawed harness attempt fed identical data to every processor/lane
|
|
and Yosys silently deduplicated down to 1x regardless of N -- caught
|
|
by checking for exactly this linearity before trusting the numbers).
|
|
|
|
[2026-09-05] EXP-0004 -- activation_buffer/weight_buffer/result_buffer,
|
|
2 depths each
|
|
activation_buffer D=4096: LUT=37 FF=30 DP16KD=2 (D=256: LUT=21 FF=26 DP16KD=1)
|
|
weight_buffer D=512: LUT=88 FF=139 DP16KD=2 (D=64: LUT=73 FF=136 DP16KD=2)
|
|
result_buffer D=4096: LUT=37 FF=30 DP16KD=2 (D=256: LUT=21 FF=26 DP16KD=1)
|
|
CHECK: 0 problems, all 6 configs correctly infer DP16KD (no LUT-RAM
|
|
fallback). weight_buffer's DP16KD count does NOT drop with depth
|
|
(width-bound, not depth-bound -- see decisions.log / benchmark.log).
|
|
|
|
[2026-09-05] EXP-0005 -- memory_manager + prefetch_engine (standalone)
|
|
LUT4=851 TRELLIS_FF=789 CCU2C=108 MULT18X18D=0 (expected, no
|
|
multiplication in this module). CHECK: 0 problems.
|
|
|
|
[2026-09-05] EXP-0006 -- neural_director (N_SLOTS=4, standalone)
|
|
LUT4=382 TRELLIS_FF=366 CCU2C=4 DSP=0. CHECK: 0 problems.
|
|
|
|
[2026-09-05] EXP-0007 -- dependency_manager (N_NODES=16, MAX_DEPS=4)
|
|
LUT4=763 TRELLIS_FF=474 CCU2C=0 DSP=0. CHECK: 0 problems.
|