| Commit message (Collapse) | Author | Age |
|---|
| |
|
|
|
|
|
|
| |
The r235 A-TRACE lines could not be attributed to buffers. The probe now
prints ATAG lines with the host buffers' VAs (h_A, h_out) next to the
device VAs (A, out, out2) and one ATAG line per phase (RAWA/PROBE1/
PROBE2/PROBE2B/RAWA2 naming src/dst/buf) right before its copies, so every
host trace event maps 1:1 to a client buffer and phase.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
PROBE2B repeat
r229 first run: PROBE1 (coordinate map) perfect; PROBE2 (flat A read)
wrong at every element - band 0 read A's own values at wrong offsets
(16382/16383 = A's last elements), bands >=1 read float-typed data. Before
concluding engine-side, the probe now records ground truth in-band:
- RAWA: A uploaded then copied straight back D2H with no kernel, first8/
last8 printed (the buffer itself must hold i);
- RAWA2: same readback after both phases (input-corruption check);
- every band prints its raw first 16 values;
- PROBE2B: the same arow_read runs a second time into a fresh output
buffer, so a first-attempt-only failure is the engine's per-launch
lottery rather than addressing.
The probe's own math re-checked: A is int32 everywhere, expected is
row*256+col, and PROBE1's exact pass over the same output pipeline proves
the harness itself is sound. Committed binary rebuilt static sm_75.
|
|
|
transformer_mt
The vGPU GR engine's failing chains are correct for the by=0 band and
replicate one tile for rows >= 16 with the QMD geometry and the input recs
proven clean, so the remaining hypothesis is engine-side CTA-coordinate
behaviour. ctaid_probe reads it directly in two phases on the exact
(16,4,1)/(16,16,1) geometry:
Phase 1 coord_map writes by*10000+bx*100+ty*10+tx per element (int32
64x256) and reports per-band row0 plus a bad count - a collapsed or
wrong CTAID.Y shows instantly.
Phase 2 arow_read writes A[(by*16+ty)*256+(bx*16+tx)] with A[i]=i, so a
correct engine reads each band's own rows; a collapsed row register reads
one band's rows everywhere.
transformer_mt prints its per-chain geometry (GEO lines) for the host-side
GRID-WIT comparison. Runtime <10 s. Built with
nvcc -O2 --cudart=static -arch=sm_75 (deterministic static runtime).
|
