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discovery: fix cudart driver version (#11614)

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We prefer the nvcuda library, which reports driver versions. When we
dropped cuda v11, we added a safety check for too-old drivers.  What
we missed was the cudart fallback discovery logic didn't have driver
version wired up.  This fixes cudart discovery to expose the driver
version as well so we no longer reject all GPUs if nvcuda didn't work.
This commit is contained in:
Daniel Hiltgen
2025-08-13 15:43:33 -07:00
committed by GitHub
parent a24f90604f
commit 837379a94c
3 changed files with 7 additions and 11 deletions
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2
discover/gpu.go
View File

@@ -263,6 +263,8 @@ func GetGPUInfo() GpuInfoList {
var driverMinor int
if cHandles.cudart != nil {
C.cudart_bootstrap(*cHandles.cudart, C.int(i), &memInfo)
driverMajor = int(cHandles.cudart.driver_major)
driverMinor = int(cHandles.cudart.driver_minor)
} else {
C.nvcuda_bootstrap(*cHandles.nvcuda, C.int(i), &memInfo)
driverMajor = int(cHandles.nvcuda.driver_major)

9
discover/gpu_info_cudart.c
View File

@@ -69,18 +69,15 @@ void cudart_init(char *cudart_lib_path, cudart_init_resp_t *resp) {
}
int version = 0;
cudartDriverVersion_t driverVersion;
driverVersion.major = 0;
driverVersion.minor = 0;
// Report driver version if we're in verbose mode, ignore errors
ret = (*resp->ch.cudaDriverGetVersion)(&version);
if (ret != CUDART_SUCCESS) {
LOG(resp->ch.verbose, "cudaDriverGetVersion failed: %d\n", ret);
} else {
driverVersion.major = version / 1000;
driverVersion.minor = (version - (driverVersion.major * 1000)) / 10;
LOG(resp->ch.verbose, "CUDA driver version: %d-%d\n", driverVersion.major, driverVersion.minor);
resp->ch.driver_major = version / 1000;
resp->ch.driver_minor = (version - (resp->ch.driver_major * 1000)) / 10;
LOG(resp->ch.verbose, "CUDA driver version: %d-%d\n", resp->ch.driver_major, resp->ch.driver_minor);
}
ret = (*resp->ch.cudaGetDeviceCount)(&resp->num_devices);

7
discover/gpu_info_cudart.h
View File

@@ -29,11 +29,6 @@ typedef struct cudartMemory_st {
size_t used;
} cudartMemory_t;
typedef struct cudartDriverVersion {
int major;
int minor;
} cudartDriverVersion_t;
typedef struct cudaUUID {
unsigned char bytes[16];
} cudaUUID_t;
@@ -123,6 +118,8 @@ typedef struct cudaDeviceProp {
typedef struct cudart_handle {
void *handle;
uint16_t verbose;
int driver_major;
int driver_minor;
cudartReturn_t (*cudaSetDevice)(int device);
cudartReturn_t (*cudaDeviceSynchronize)(void);
cudartReturn_t (*cudaDeviceReset)(void);