1 Commits
Author SHA1 Message Date
Palash DebnathandClaude Opus 5 36e3397613 fix(cuda): stop sending every RTX 40-series card to the CPU (#1289)
* fix(engines): warn about under-provisioned hardware before the synth, not after

Six reports are the same story: #1240, #1246, #1248, #1277, #1283, #1284 —
4 GB and 6 GB cards running an engine that wants 6 GB, each one waiting out
the full 300s compute budget to be told the job "was too heavy". The routing
layer knew the whole time. The error text even names the card and the figure.

The caveat only ever surfaced on the engine-PICK toast, so it reached people
who changed engines and nobody whose engine was already selected — the
default, or one persisted from a previous session. That is most users.
/generate does return X-OmniVoice-Routing, but a response header arrives when
the job ends, five minutes too late to be a warning.

So the check moves to the chokepoint every synth path shares (api/generate.ts,
same argument as the in-flight count). Fire-and-forget: never awaited, so it
cannot add latency to the request it warns about; never throws, so an
unreachable backend costs a warning rather than a generate; once per
engine+reason per session, so it informs instead of nagging. Advisory, not
blocking — the driver can page to system RAM and short inputs fit where long
ones don't.

Extracts routingNotice() as the single frontend mirror of the backend's
routing_notice(). Two callers now need "is this verdict worth interrupting
for", and two inline copies would drift — invisibly, until someone on DirectML
or an unavailable engine gets a hardware warning for a normal pick.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(cuda): stop sending every RTX 40-series card to the CPU

The SM-arch gate required the device's exact tag in get_arch_list(). NVIDIA's
rules are not exact, and PyTorch depends on that: SASS is binary-compatible
UPWARD within a major version, so the official wheels ship sm_80/sm_86 and
deliberately no sm_89 — the 8.6 kernels already cover Ada. Exact matching
therefore declared sm_89 unsupported, check_device_compatibility() returned
False, and get_best_device() silently returned "cpu".

That is every RTX 4060/4070/4080/4090, not just the reporter's card (#1285) —
each one running TTS on the CPU on hardware that works fine, with a message
telling them their GPU was unsupported.

cuda_build_covers() now applies the real rules: sm_XY covers same-major
devices with minor >= Y; compute_XY PTX JITs forward to anything newer; an
a/f suffix (sm_90a) is architecture-specific and matches exactly. Unparseable
entries are skipped, and an empty arch list still degrades to "compatible" —
the pre-existing fail-open contract.

The remediation text also pointed at a NIGHTLY index for what is a stable
supported card; it now names the stable cu128 index.

12 tests: the Ada regression, Jetson Orin (8.7), downward-within-major and
cross-major rejection, PTX forward-JIT, arch-specific suffixes, and a genuine
sm_120-on-old-wheel mismatch so the gate is proven to still work.

Closes #1285

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* test(cuda): resolve app modules at call time, not import time

The tests/** review contract forbids module-level imports of app modules —
they go stale under sys.modules pollution from other suites, which is the live
cause of #1269's cross-suite failures. Binds core.device_caps per call.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix: restore generate.ts and generatePreflight.test.js from main

Conflict markers were committed in the previous merge — `git add` on the
directory staged both files as resolved while the markers were still in them.
Both belong to #1288 and are unchanged by this PR, so they take main's version
verbatim.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-07-29 01:59:06 -07:00