[sdroege]

Problem and result

On an AMD card with a hipBLASLt tuning table, setup.py replaced the config's whole env with {"STRATA_HIPBLASLT_TUNING": ...}. An Unsloth install whose experts all stay in RAM (no --resident-budget-gib) lost STRATA_ROUTE_TAIL_SKIP=0, and the route tail skip costs these files KL (docs/QUANTS.md, "The route tail skip"). After the fix the table joins the existing env and both entries stay.

Related discussion

none

Approach

cfg.setdefault("env", {})["STRATA_HIPBLASLT_TUNING"] = str(table), so the table joins the existing env instead of replacing it. Only the non-Control HIP path is changed; the Control path is untouched.

Validation

Passed:

• New test test_hip_keeps_the_env_of_an_all_ram_install in tools/test_setup_unsloth.py: installs the HIP path with a tuning table and checks that both STRATA_HIPBLASLT_TUNING and STRATA_ROUTE_TAIL_SKIP are present.

Failed:

• none observed

Not run:

• The full suite on hardware; the test mocks the GPU.

Limits

Only the non-Control HIP path is changed; the Control path is untouched.