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GPU RepeatInterleaveF32 kernel launch segfaults (SIGSEGV, null-pointer CUDA call) -- crashes any GQA model on GPU

Status: Open.

#180In zerfoo/ztensor;

· dndungu opened on Aug 10, 2026

internal/metal: Metal compute dispatch SIGSEGVs on darwin/amd64 (exposed by #171 fix)

Status: Open.

#173In zerfoo/ztensor;

· dndungu opened on Jul 3, 2026

Arena ResetPool + memory reuse corrupts save-for-backward tensors → zero/garbage gradients on subsequent steps (GB10)

Status: Open.

#167In zerfoo/ztensor;

· dndungu opened on Jun 17, 2026

Save-for-backward contract + arena pinning + poison-on-reset; gradcheck/parity harnesses; kernel numerics audit

Status: Open.

#128In zerfoo/ztensor;

· dndungu opened on Jun 10, 2026

v1.9.0: arena overflow hit on FIRST per-sample alloc (64GB arena) + async overflow still stalls GB10 — crossasset training freezes step 0

Status: Open.

#118In zerfoo/ztensor;

· dndungu opened on Jun 7, 2026