Browse reusable Agent Skills, each with a clear purpose and practical guidance.
Drive a GitHub pull request through repeated rounds of Copilot code review until convergence. Use when the user asks to "request Copilot review", "run a Copilot review loop", iterate on Copilot feedback, or wants automated triage-and-respond on Copilot PR comments. Covers re-request mechanics, open-thread filtering, fix-vs-decline triage, reply-and-resolve, and end-of-loop cleanup.
Debug compilation or runtime errors in LLK kernels. Infers architecture and kernel type from path.
Audit LLK code for races on the backend CONFIG register file where differently-named fields share the SAME 32-bit config word — both cross-thread (unpack/math/pack write the same word) and intra-thread (a full-word write clobbers a sibling field the same thread set elsewhere). Use after adding/changing any ALU_FORMAT_SPEC / ALU_ACC_CTRL / ALU_ROUNDING_MODE / STACC_RELU / THCON_SEC* write, any WRCFG_32b/cfg[]= full-word write to a multi-field word, or any cfg_reg_rmw_tensix on a word another thread also touches.
Audit circular-buffer (CB) producer/consumer flow control between data-movement (reader/writer) and compute kernels — cb_reserve_back/cb_push_back/cb_wait_front/cb_pop_front credit balance, data-write-before-credit ordering (NOC flush), reserve/wait-before-access, capacity vs num_pages, single-producer/consumer, counter cache-coherency, and remote/sharded CB credits. Use after touching any cb_* call, a reader/writer/compute kernel, fifo_rd_ptr/fifo_wr_ptr/pages_received/pages_acked, or RemoteSender/ReceiverCBInterface. Scope reaches beyond tt-llk into tt_metal/hw/inc/api/dataflow and ttnn/models kernels.
Audit hand-written Tensix/SFPU instruction sequences for missing pipeline-latency padding — where a dependent instruction consumes a multi-cycle-latency result before it is ready and a NOP (or independent-instruction spacing) is required. Use after touching any raw TTI_SFP*/TTI_* sequence, ckernel_sfpu_* kernels, or hand-assembled instruction streams. NOT a cross-thread race — an intra-thread micro-architectural hazard.
Audit LLK/compute-API use of the RISC↔RISC hardware mailboxes (mailbox_write/mailbox_read/mailbox_not_empty, TENSIX_MAILBOX*) for races/deadlock — push/pop balance per directed channel, call-count symmetry across threads, correct write-dest/read-src addressing, FIFO overflow, and the fence=nop ordering caveat. Use after touching any mailbox_write/mailbox_read, the CB tile-address/value broadcast (circular_buffer.h / cb_api.h get_tile_address/read_tile_value), unpack-to-dest dst_index passing, or the debug halt/unhalt handshake.
Audit LLK code for races between a RISC MMIO write to a config/GPR register and a Tensix instruction/MOP/replay that consumes it. Use after touching any raw cfg[...]=/reg_write/cfg_rmw/regfile[]= write near an UNPACR/PACR/MOP/CFGSHIFTMASK, or when adding addressing/stride/format register writes.
Audit cross-core NoC synchronization in dataflow kernels — noc_semaphore_wait/set/inc balance and direction, multicast fan-out counts, and data-before-signal NoC ordering (noc_async_write_barrier / noc_async_writes_flushed before a remote credit). The half of dataflow that dataflow-cb-sync-audit (CB credits) does not reach. Use after touching reader/writer kernels, noc_semaphore_*, noc_async_*_barrier, or any cross-core handshake not expressed as a CB.
Audit Tensix/SFPU LLK compute kernels for PERFORMANCE — unfilled latency shadows/bubbles and redundant NOPs, redundant Dst/LReg store-load traffic, loop-invariant work, predication that should be branchless arithmetic (min/max/abs/setsgn), un-fused mul+add, ignored APPROXIMATION_MODE, and unroll/register-pressure mistakes. Use after touching any ckernel_sfpu_*.h, hand-written TTI_SFP*/TTI_* sequence, or the compute inner loop. This is a PERF audit (wasted cycles), NOT a correctness/race audit — pair it with instruction-latency-audit.
Reproduce a flaky/timing-dependent kernel failure (suspected undocumented HW race) by injecting NOPs/delays to shift inter-thread / inter-kernel / inter-core timing until the failure becomes frequent enough to isolate and minimize into a deterministic reproducer. Sweeps NOP count × injection position × actor, records the max-error scenario PER actor to a report file (rewritten after each actor finishes so you can stop early), then (on request) minimizes the test around a chosen scenario. Works for tt-metal ttnn op tests and tt-llk kernel tests.