Enhance mocks to cover getting device attributes

Author: gnurizen

test/mock_cuda.c

@@ -29,3 +29,36 @@ CUresult cuDriverGetVersion(int *driverVersion) {
 CUresult cuCtxSynchronize(void) {
     return CUDA_SUCCESS;
 }
+
+// Mock cuCtxGetDevice — return a fixed device id for the parcagpu
+// gpu_config probe path.
+CUresult cuCtxGetDevice(CUdevice *device) {
+    if (device == NULL) {
+        return CUDA_ERROR_INVALID_VALUE;
+    }
+    *device = 0;
+    return CUDA_SUCCESS;
+}
+
+// Mock cuDeviceGetAttribute — return plausible H100-class values for the
+// attributes parcagpu queries at context init. Anything not enumerated
+// returns 0 (still success), so callers see a non-error but inert value.
+CUresult cuDeviceGetAttribute(int *pi, CUdevice_attribute attrib,
+                              CUdevice dev) {
+    (void)dev;
+    if (pi == NULL) {
+        return CUDA_ERROR_INVALID_VALUE;
+    }
+    switch (attrib) {
+    case CU_DEVICE_ATTRIBUTE_CLOCK_RATE:
+        *pi = 1830000; // 1.83 GHz, H100 boost
+        break;
+    case CU_DEVICE_ATTRIBUTE_MULTIPROCESSOR_COUNT:
+        *pi = 132; // H100 SXM5
+        break;
+    default:
+        *pi = 0;
+        break;
+    }
+    return CUDA_SUCCESS;
+}