Issues

• CUDA arch autodetection still breaks on sm_121 (GB10 / DGX Spark): "2.1" substring replace turns 12.1 into 12.1(2.0)

  k2-fsa/k2#1359 · Filter by author thewh1teagle opened on Oct 9, 2026

• CUDA architecture detection fails for NVIDIA GB10 / sm_121 on ARM aarch64

  k2-fsa/k2#1354 · Filter by author anci123 opened on Jun 12, 2026

• Why lattice.shortest path slower than lattice.get_tot_scores ?

  k2-fsa/k2#1348 · Filter by author tcourat opened on Mar 12, 2026
  2

• Got error when building wheel from source

  k2-fsa/k2#1340 · Filter by author irrikrlla opened on Aug 30, 2025
  5

• Installation on Blackwell GPU: Unknown CUDA Architecture Name 12.0 in CUDA_SELECT_NVCC_ARCH_FLAGS

  k2-fsa/k2#1332 · Filter by author mxbi opened on Mar 27, 2025
  4

• error while removing epsilon from LG file

  k2-fsa/k2#1330 · Filter by author Manjunath-mlp opened on Mar 5, 2025
  10

• Failed to install from source: cmake_device_link.o generated with LTO version

  k2-fsa/k2#1328 · Filter by author MeeElves opened on Feb 11, 2025
  1

• installation problems occurred during the K2 in windows.

  k2-fsa/k2#1323 · Filter by author zaheera01 opened on Jan 29, 2025
  6

• A error when compose LG

  k2-fsa/k2#1318 · Filter by author teamtee opened on Jan 3, 2025
  7

• How to force k2 device context?

  k2-fsa/k2#1316 · Filter by author lifeiteng opened on Dec 28, 2024
  2

• Parallele composition of FSTs?

  k2-fsa/k2#1310 · Filter by author Chenxi-Nie opened on Nov 22, 2024

• fail k2.compose(H, LG, inner_labels="tokens")

  k2-fsa/k2#1285 · Filter by author liweiyong-leo opened on May 9, 2024
  13

• Torchscript export error for torch.finfo function

  k2-fsa/k2#1284 · Filter by author vinitunni opened on Apr 30, 2024
  2

• nbest C++ api use too much vram

  k2-fsa/k2#1281 · Filter by author binhtranmcs opened on Apr 22, 2024
  5

• error: conflicting declaration ‘typedef struct CUevent_st*

  k2-fsa/k2#1279 · Filter by author binhtranmcs opened on Apr 21, 2024
  7

• Nbest online decoding bug

  k2-fsa/k2#1276 · Filter by author binhtranmcs opened on Apr 10, 2024
  15

• Installation on Windows with GPU

  k2-fsa/k2#1263 · Filter by author ron-wein opened on Dec 7, 2023
  2

• K2 installation on Windowd

  k2-fsa/k2#1256 · Filter by author AlexandderGorodetski opened on Oct 25, 2023
  15

• Use system kaldifeat

  k2-fsa/k2#1250 · Filter by author meerfrau opened on Oct 13, 2023
  1

• any possibility / estimation of work necessary to support mps device

  k2-fsa/k2#1243 · Filter by author drahnreb opened on Sep 18, 2023
  2

• Question Clarification on streaming decoding for HLG

  k2-fsa/k2#1242 · Filter by author kbramhendra opened on Sep 14, 2023
  7

• Recommended ways to install k2

  k2-fsa/k2#1232 · Filter by author csukuangfj opened on Jul 23, 2023
  4

• Provide a script to install k2 automatically

  help wanted
  k2-fsa/k2#1223 · Filter by author csukuangfj opened on Jul 13, 2023
  5

• Training with custom CTC topology (with no blanks)

  k2-fsa/k2#1222 · Filter by author desh2608 opened on Jul 12, 2023
  3

• HLG cannot be determinized after converting to openfst format

  k2-fsa/k2#1221 · Filter by author wangtiance opened on Jul 11, 2023