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[build/docs] Define the supported build configuration model

Status: Open.

#1183 In Cytnx-dev/Cytnx;

· pcchen opened on Aug 19, 2026

UniTensor::truncate_(bond, x): x is a bond dimension for dense tensors but a sector index for symmetric ones

suggestionSuggestion for current codebaseSuggestion for current codebase

Status: Open.

Task

#1182 In Cytnx-dev/Cytnx;

· manuschneider opened on Aug 14, 2026

Migrate the remaining hand-written CUDA kernels off cuFloatComplex/cuDoubleComplex (follow-up to #1003)

Status: Open.

#1178 In Cytnx-dev/Cytnx;

· yingjerkao opened on Aug 13, 2026

[build] #1171 part 1: default multi-arch CUDA build does emit sm_80 SASS on master — mechanism needs re-diagnosis, and CI never covers the default path

CI/CDCI/CD related issuesCI/CD related issues

compile/buildissues related to compiling/building processesissues related to compiling/building processes

gpu

Status: Open.

#1177 In Cytnx-dev/Cytnx;

· yingjerkao opened on Aug 5, 2026

[gpu] Scope temporary device buffers with DeviceBuffer so a failed kernel launch cannot leak them

good first issueGood for newcomersGood for newcomers

gpu

Status: Open.

#1176 In Cytnx-dev/Cytnx;

· yingjerkao opened on Aug 4, 2026

[build] Default CUDA architectures: GPU kernels silently return zeros on sm_80, and a wrong-arch build never reports an error

Status: Open.

#1171 In Cytnx-dev/Cytnx;

· yingjerkao opened on Aug 2, 2026

refactor(Type): deduplicate the two value-type → CUDA-type traits (to_cuda_t / gpu_element_type_t)

Status: Open.

#1170 In Cytnx-dev/Cytnx;

· yingjerkao opened on Aug 2, 2026

CUDA error paths still terminate the process with exit()

Status: Open.

#1164 In Cytnx-dev/Cytnx;

· IvanaGyro opened on Aug 2, 2026

codecov/project red on every PR since 2026-07-30: pybind/ files dropped out of the C++ coverage report

bugSomething isn't workingSomething isn't working

CI/CDCI/CD related issuesCI/CD related issues

Status: Open.

#1162 In Cytnx-dev/Cytnx;

· yingjerkao opened on Jul 31, 2026

Uint16 x Uint16 multiply is signed-overflow UB in Kron/Outer/Mul (CPU and GPU)

bugSomething isn't workingSomething isn't working

gpu

Status: Open.

#1160 In Cytnx-dev/Cytnx;

· yingjerkao opened on Jul 31, 2026

Print full-precision mismatch values in CPU and GPU test helpers

Status: Open.

#1159 In Cytnx-dev/Cytnx;

· IvanaGyro opened on Jul 31, 2026

No CI job exercises pixi.toml, so the development environment can rot silently

Status: Open.

#1158 In Cytnx-dev/Cytnx;

· IvanaGyro opened on Jul 31, 2026