kernbench2

ywkang/kernbench2

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Author	SHA1	Message	Date
mukesh	14d800b0ae	Kernel-launch sync (ADR-0009 D5) and IPCQ drain at inbound (ADR-0023) - KernelLaunchMsg gains target_start_ns: IO_CPU stamps a global barrier (max path latency across every target PE), M_CPU passes it through, PE_CPU yields until it before recording pe_exec_start. Every PE in a launch begins kernel execution at the same env.now regardless of its dispatch path length — eliminates per-PE dispatch-offset artifact in cross-PE and cross-cube latency measurements. - PE_DMA._handle_ipcq_inbound now pays Transaction.drain_ns at the top, matching the terminal-drain behavior of ComponentBase._forward_txn for every non-IPCQ Transaction. SRC-side tl.send stays fire-and-forget (sender doesn't yield on sub_done); tl.recv now blocks until bytes have actually drained into its inbox. - ComponentContext: new compute_path_latency_ns helper + node_overhead_ns field populated by GraphEngine. - tests/test_kernel_launch_sync.py: asserts all PEs in one launch produce identical pe_exec_ns for a no-op kernel (zero spread). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-23 15:30:29 -07:00
ywkang	1d95df4bee	Restructure legacy backups, remove pe_accel, fix DMA self-routing - Move builtin_legacy/ → legacy/builtin/ (cleaner structure) - Move pe_accel_legacy/ → legacy/pe_accel/ - Remove custom/pe_accel/ (replaced by new builtin) - Remove pe_scheduler_v2 from components.yaml - Switch topology.yaml to pe_scheduler_v1 (new builtin) - Fix PE_DMA self-routing: handle consecutive DMA_READ stages (same component consecutive stages processed in-place, not via port) 382 tests passing. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-09 00:02:26 -07:00

Author

SHA1

Message

Date

mukesh

14d800b0ae

Kernel-launch sync (ADR-0009 D5) and IPCQ drain at inbound (ADR-0023)

- KernelLaunchMsg gains target_start_ns: IO_CPU stamps a global barrier
  (max path latency across every target PE), M_CPU passes it through,
  PE_CPU yields until it before recording pe_exec_start. Every PE in a
  launch begins kernel execution at the same env.now regardless of its
  dispatch path length — eliminates per-PE dispatch-offset artifact in
  cross-PE and cross-cube latency measurements.

- PE_DMA._handle_ipcq_inbound now pays Transaction.drain_ns at the top,
  matching the terminal-drain behavior of ComponentBase._forward_txn for
  every non-IPCQ Transaction. SRC-side tl.send stays fire-and-forget
  (sender doesn't yield on sub_done); tl.recv now blocks until bytes
  have actually drained into its inbox.

- ComponentContext: new compute_path_latency_ns helper + node_overhead_ns
  field populated by GraphEngine.

- tests/test_kernel_launch_sync.py: asserts all PEs in one launch
  produce identical pe_exec_ns for a no-op kernel (zero spread).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-23 15:30:29 -07:00

ywkang

1d95df4bee

Restructure legacy backups, remove pe_accel, fix DMA self-routing

- Move builtin_legacy/ → legacy/builtin/ (cleaner structure)
- Move pe_accel_legacy/ → legacy/pe_accel/
- Remove custom/pe_accel/ (replaced by new builtin)
- Remove pe_scheduler_v2 from components.yaml
- Switch topology.yaml to pe_scheduler_v1 (new builtin)
- Fix PE_DMA self-routing: handle consecutive DMA_READ stages
  (same component consecutive stages processed in-place, not via port)

382 tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-09 00:02:26 -07:00

2 Commits