Issues

• [FEA] nvidia-cutlass-dsl-libs-base for RTX Spark (Windows ARM64)

  CuTe DSLfeature request
  NVIDIA/cutlass#3790 · Filter by author SystemPanic opened on Oct 25, 2026
  1

• [FEA] CuTe DSL: Python 3.15 support (cp315 wheels)

  CuTe DSL
  NVIDIA/cutlass#3789 · Filter by author nimz opened on Oct 25, 2026

• [BUG][CuTeDSL] Blackwell dense_gemm example aborts (SIGABRT in cute.slice_) for tf32 + 2-CTA + B K-major with MMA tiler N 96 / 160, which can_implement() accepts

  NVIDIA/cutlass#3784 · Filter by author jeffchen006 opened on Oct 24, 2026
  1

• [BUG] TMA epilogue hangs with a null beta_ptr, nonzero dBeta and nonzero scalar beta (load warp and epilogue disagree on loading C)

  CUTLASS C++
  NVIDIA/cutlass#3783 · Filter by author builtin-pb opened on Oct 24, 2026
  1

• [BUG] SM100 mixed TMA/cp.async GEMM: scheduler (CLC) pipeline does not count the epilogue-load warp, hangs when C is loaded

  CUTLASS C++
  NVIDIA/cutlass#3782 · Filter by author builtin-pb opened on Oct 24, 2026

• [FEA] Hopper CuTe DSL FMHA example: variable-length (cu_seqlens) inputs

  NVIDIA/cutlass#3773 · Filter by author 0z5a opened on Oct 23, 2026

• [BUG] test

  bugCuTe DSL
  NVIDIA/cutlass#3766 · Filter by author NoCLin opened on Oct 21, 2026

• [BUG] Example 77 MLA fused split-KV reduction (--fuse_reduction) can hang or return wrong output

  CUTLASS C++
  NVIDIA/cutlass#3764 · Filter by author builtin-pb opened on Oct 21, 2026

• [DOC] IKET quick start omits the GEMM GPU requirement and references a missing example

  NVIDIA/cutlass#3761 · Filter by author 0z5a opened on Oct 20, 2026
  1

• [DOC] Dynamic-layout guide example uses incompatible singleton strides

  NVIDIA/cutlass#3760 · Filter by author 0z5a opened on Oct 20, 2026
  1

• [DOC] TVM FFI guide examples fail due to missing imports, exception type and loader ABI

  NVIDIA/cutlass#3759 · Filter by author 0z5a opened on Oct 20, 2026
  1

• [BUG] CuTe DSL: SIGSEGV compiling integer ** (int32/int64), including 2 ** 3

  bugCuTe DSL
  NVIDIA/cutlass#3735 · Filter by author JayceSu98 opened on Oct 13, 2026
  2

• [BUG] cute.ceil_div throws internal error with int64 input

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3734 · Filter by author kainzhong opened on Oct 12, 2026
  1

• [QST] SM120 FP8 MMA with FP32 accumulate, plain form against block-scaled form with unit scales

  NVIDIA/cutlass#3732 · Filter by author emre570 opened on Oct 11, 2026
  6

• [BUG] Cache policy from cute.copy is dropped when the copy atom is created with invariant=True

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3726 · Filter by author kainzhong opened on Oct 9, 2026
  1

• [BUG] SM90 TMA GEMM mainloops rely on elect_one_sync() electing lane 0 (TMA issuer vs. PipelineTmaAsync is_leader)

  CUTLASS C++
  NVIDIA/cutlass#3722 · Filter by author builtin-pb opened on Oct 8, 2026

• [BUG] SM90 cp.async + GMMA collectives: no fence.proxy.async between cp.async operand writes and wgmma reads

  CUTLASS C++
  NVIDIA/cutlass#3721 · Filter by author builtin-pb opened on Oct 8, 2026

• [BUG] Grouped GEMM and grouped Rank2K kernels build operand iterators from a temporary Params

  NVIDIA/cutlass#3718 · Filter by author BwL1289 opened on Oct 7, 2026

• [BUG] CuTe DSL from_dlpack rejects float8_e4m3fn tensors (dtype_map lists Float8E5M2 only)

  NVIDIA/cutlass#3716 · Filter by author Vinnie6167 opened on Oct 7, 2026
  1

• [BUG] CuTe DSL >=4.6.0: export_to_c does not apply explicit preferred_smem_carveout

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3715 · Filter by author naytiba opened on Oct 7, 2026
  1

• [BUG] [BUG] cute.arch.store doesn't work with fp8 vector

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3712 · Filter by author gau-nernst opened on Oct 5, 2026
  1

• [BUG] CuTe DSL CopyUniversalOp ignores l1c_evict_priority again (regression of #3199 since 4.6.0, loads and stores)

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3711 · Filter by author gau-nernst opened on Oct 5, 2026
  2

• [BUG] CuTe DSL >= 4.6: FlashAttention-4 SM100 backward with block-sparse masks spills registers, up to 1.8x slower than 4.5.3 (same kernel source)

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3707 · Filter by author janhuenermann opened on Oct 1, 2026
  7

• [BUG] CuTe DSL 4.7/4.8 regression: FlashAttention-4 SM100 forward kernel spills registers (0 -> 176 B) vs 4.5.1, ~3% slower on B300

  NVIDIA/cutlass#3701 · Filter by author zpcore opened on Sep 29, 2026
  2

• [BUG] CuTeDSL 4.8.0 nvpu-optimization fails without a diagnostic on a sum of 10 dynamic extents

  ? - Needs TriagebugCuTe DSL
  NVIDIA/cutlass#3699 · Filter by author allispaul opened on Sep 29, 2026
  1