Issues

• Track enabling GitHub Secret Scanning for cuDNN Frontend

  cat-cicat-enhancementsorig-qa
  Task

  NVIDIA/cudnn-frontend#1722 · Filter by author liujane-dev opened on Oct 19, 2026
  

• python/sdpa/frost:cutlass-4.8:sm107: test/python/sdpa/graph/test_mhas_v2.py::test_sdpa_fwd_cc107_decode_tile_envelope_pinned_L0[gpt_oss_d64_sink_swa]

  cat-bugmod-frontendorig-qa
  Bug

  NVIDIA/cudnn-frontend#1705 · Filter by author liujane-dev opened on Oct 18, 2026

• python/*/frost:cutlass-4.8:sm100 [2 jobs]: test/python/core/frost/test_frost_kernel_name_prefix.py::test_frost_kernels_have_cudnn_name_prefix

  cat-bugmod-frontendorig-qa
  Bug

  NVIDIA/cudnn-frontend#1704 · Filter by author liujane-dev opened on Oct 18, 2026

• [CI] python/*/cutedsl:cutlass-4.8:sm100 9 jobs test_block_compiled_cache.py::test_the_plain_modules_key_on_their_file_digest_and_the_memo_dict_k

  cat-bugmod-frontendorig-qa
  Bug

  NVIDIA/cudnn-frontend#1703 · Filter by author liujane-dev opened on Oct 18, 2026

• CuTeDSL grouped GEMM wrappers accept SM110 (Jetson Thor) but fail in ptxas: redux.f32 not supported on sm_110a

  NVIDIA/cudnn-frontend#1686 · Filter by author 0z5a opened on Oct 16, 2026

• sdpa fwd (frost): SM100 dense d192/128 BF16 MHA default leads FROST but runs 9-17% slower than backend eng10 at s <= 8k

  cat-perf-bug
  NVIDIA/cudnn-frontend#1660 · Filter by author YangXu1990uiuc opened on Oct 15, 2026

• python/*/cutedsl:cutlass-4.8:sm107 - GAB serving EXTEND BF16 HND pool K exceeds oracle tolerance

  cat-bugmod-frontendorig-qa
  Bug

  NVIDIA/cudnn-frontend#1658 · Filter by author liujane-dev opened on Oct 15, 2026
  1

• SM100 FP8 SDPA forward under-reports Amax_S at short s_q (max over the first 128 KV columns only)

  area:global_attentioncat-bugmod-backendorig-nv-eng
  NVIDIA/cudnn-frontend#1613 · Filter by author YangXu1990uiuc opened on Oct 13, 2026

• SM100 SDPA backward d=256: the heuristic's knob set fails NVRTC compilation (hidden by the frontend override)

  area:global_attentioncat-bugmod-backendorig-nv-eng
  NVIDIA/cudnn-frontend#1612 · Filter by author YangXu1990uiuc opened on Oct 13, 2026

• SDPA rng_dump at s_q == 1 leaves 75% of the dropout mask unwritten on SM80/SM89/SM90

  area:global_attentioncat-bugmod-backendorig-nv-eng
  NVIDIA/cudnn-frontend#1611 · Filter by author YangXu1990uiuc opened on Oct 13, 2026
  1

• SDPA dropout on SM100 cannot go below 1/256 and is biased high for small p

  area:global_attentioncat-bugmod-backendorig-nv-eng
  NVIDIA/cudnn-frontend#1610 · Filter by author YangXu1990uiuc opened on Oct 13, 2026

• [Docs] cuDNN latest document-check found high-priority findings

  cat-docmod-frontendorig-qa
  Bug

  NVIDIA/cudnn-frontend#1576 · Filter by author liujane-dev opened on Oct 12, 2026
  1

  

• SDPA: b or h > 65535 passes check_support/build_plans on every plan, then fails at kernel launch (native and FROST)

  NVIDIA/cudnn-frontend#1573 · Filter by author YangXu1990uiuc opened on Oct 11, 2026
  1

• sdpa fwd: execute-time override_strides are accepted but ignored (kernel uses the declared strides; silently wrong, cuDNN 9.27)

  area:global_attentioncat-bug
  NVIDIA/cudnn-frontend#1570 · Filter by author YangXu1990uiuc opened on Oct 11, 2026

• sdpa fwd: execute-time s_kv override off the KV tile attends to the tile's padding rows (silently wrong; first-ranked plans on H100/B200, cuDNN 9.27)

  area:global_attentioncat-bug
  NVIDIA/cudnn-frontend#1567 · Filter by author YangXu1990uiuc opened on Oct 11, 2026
  1

• SDPA: SM107 forward test387 watchdog after graph execution (padded D144/V104)

  NVIDIA/cudnn-frontend#1538 · Filter by author YangXu1990uiuc opened on Oct 9, 2026
  3

• test_mhas_v2 on cc 10.7 outgrew the SM107-test_mhas job's 2400 s timeout (13252 -> 17007 items)

  area:frostcat-ci
  NVIDIA/cudnn-frontend#1526 · Filter by author YangXu1990uiuc opened on Oct 9, 2026 · Frontend 1.32.0

• [FROST][SM107] BF16 paged sink decode remains 2.6–9x slower than vLLM FlashInfer GEN on identical page16 inputs

  NVIDIA/cudnn-frontend#1517 · Filter by author vedaanta opened on Oct 9, 2026

• [FROST][SM107] Selected BF16 sink SDPA plan is 1.5x slower than native backend for high-batch verification

  NVIDIA/cudnn-frontend#1472 · Filter by author vedaanta opened on Oct 8, 2026

• sdpa fwd (frost): nonpaged THD split rule overcounts CTAs (no GQA packing, ragged max length, one-wave cap); 1.4-3x left unselected

  NVIDIA/cudnn-frontend#1439 · Filter by author YangXu1990uiuc opened on Oct 7, 2026
  6

• frost(sdpa): forward kernels fold attn_scale into exp2 after an unscaled -inf-masked max, so attn_scale <= 0 with any mask gives NaN (SM80/SM100/SM107/SM120)

  NVIDIA/cudnn-frontend#1435 · Filter by author YangXu1990uiuc opened on Oct 7, 2026
  1

• [Bug]: causal SDPA with attn_scale=0.0 returns NaN on the first-ranked backend engines (B200 eng10/eng5, H100 eng9; cuDNN 9.26)

  NVIDIA/cudnn-frontend#1428 · Filter by author YangXu1990uiuc opened on Oct 7, 2026

• frost(sdpa): synthesized-padding path (mask-free, S_kv off the KV tile) costs ~70 us host per eager execute and disables split-KV

  area:frostcat-perf-bugmod-frostorig-nv-eng
  NVIDIA/cudnn-frontend#1425 · Filter by author YangXu1990uiuc opened on Oct 7, 2026
  1

• sdpa(paged): backend FP8 forward reads page-table slots past the live pages (tile-rounded); NaN pages poison O

  area:global_attentioncat-bugmod-backendorig-nv-eng
  NVIDIA/cudnn-frontend#1416 · Filter by author YangXu1990uiuc opened on Oct 6, 2026

• [Bug]: cuDNN 9.27 BF16 SDPA forward nondeterminism on GB10 (COMPOSITE and UNIFIED; fixed-input repro)

  cat-bugmod-backendorig-external
  NVIDIA/cudnn-frontend#1412 · Filter by author Jaeyeong-CHOI opened on Oct 6, 2026 · Frontend 1.32.0
  3