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ago / GA100 Fuse & Register Reference Table — Full Ampere Lineup (11 cards, 120 registers)

Last active 1 month ago
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GA100 Fuse & Register Reference Table

Cross-variant comparison of all registers read by tools/mmio-probe/probe.sh. 15 Ampere cards probed: 2× CMP 170HX 10GB (Cab + Own physical hardware, 2026-05-05/07) + 11 via Vast.ai rentals + 2× Drive A100 32GB (PG199, GA100-550F-A1, physical hardware, 2026-05-31).

Table of contents

  • Key findings
  • FMA / Tensor Core throttle
  • Feature override chain
ago

ago / check_gpc.py

Last active 1 month ago
0 0 1
1 #!/usr/bin/env python3
2 """Read-only BAR0 probe for GA100 GPC floorsweep fuses (OPT_GPC_DISABLE / OPT_GPC_DEFECTIVE).
3
4 Never writes to BAR0. Requires root to mmap /sys/bus/pci/devices/<bdf>/resource0.
5 """
6
7 import mmap
8 import os
9 import struct
10 import subprocess