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cuda: fix check for GPU device availability #2510

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merged 1 commit into from
Nov 12, 2024
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cuda: fix check for GPU device availability #2510

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18 changes: 16 additions & 2 deletions plugins/cuda/cuda_plugin.c
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Original file line number Diff line number Diff line change
Expand Up @@ -470,6 +470,20 @@ int cuda_plugin_resume_devices_late(int pid)
}
CR_PLUGIN_REGISTER_HOOK(CR_PLUGIN_HOOK__RESUME_DEVICES_LATE, cuda_plugin_resume_devices_late)

/**
* Check if a CUDA device is available on the system
*/
static bool is_cuda_device_available(void)
{
const char *gpu_path = "/proc/driver/nvidia/gpus/";
struct stat sb;

if (stat(gpu_path, &sb) != 0)
return false;

return S_ISDIR(sb.st_mode);
}

int cuda_plugin_init(int stage)
{
int ret;
Expand All @@ -481,8 +495,8 @@ int cuda_plugin_init(int stage)
}
}

if (!fault_injected(FI_PLUGIN_CUDA_FORCE_ENABLE) && access("/dev/nvidiactl", F_OK)) {
pr_info("/dev/nvidiactl doesn't exist. The CUDA plugin is disabled.\n");
if (!fault_injected(FI_PLUGIN_CUDA_FORCE_ENABLE) && !is_cuda_device_available()) {
pr_info("No GPU device found; CUDA plugin is disabled\n");
plugin_disabled = true;
return 0;
}
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