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Refuse to start with more GPUs than MAX_GPU_COUNT #16

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Merged
ricky-chaoju merged 1 commit into from
Sep 2, 2026
Merged

Refuse to start with more GPUs than MAX_GPU_COUNT #16

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9 changes: 9 additions & 0 deletions src/gpu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,15 @@ int gpu_init(void) {
return -1;
}

/* Per-GPU state lives in fixed-size arrays sized by MAX_GPU_COUNT. */
if (device_count > MAX_GPU_COUNT) {
fprintf(stderr, "Found %u GPUs but NVFD supports at most %d "
"(MAX_GPU_COUNT in include/nvfd.h)\n",
device_count, MAX_GPU_COUNT);
nvmlShutdown();
return -1;
}

return 0;
}

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