Add UUID to environment for cupy and nvcuda backends

Author: stijnh

kernel_tuner/backends/cupy.py

@@ -2,6 +2,7 @@
 from __future__ import print_function
 
 import numpy as np
+import uuid
 
 from kernel_tuner.backends.backend import GPUBackend
 from kernel_tuner.observers.cupy import CupyRuntimeObserver
@@ -80,6 +81,10 @@ def __init__(self, device=0, iterations=7, compiler_options=None, observers=None
         env["iterations"] = self.iterations
         env["compiler_options"] = compiler_options
         env["device_properties"] = self.devprops
+
+        props = cp.cuda.runtime.getDeviceProperties(device)
+        env["uuid"] = str(uuid.UUID(bytes=props["uuid"]))
+
         self.env = env
         self.name = env["device_name"]
 

kernel_tuner/backends/nvcuda.py

@@ -2,6 +2,7 @@
 from warnings import warn
 
 import numpy as np
+import uuid
 
 from kernel_tuner.backends.backend import GPUBackend
 from kernel_tuner.observers.nvcuda import CudaRuntimeObserver
@@ -99,6 +100,7 @@ def __init__(self, device=0, iterations=7, compiler_options=None, observers=None
         err, device_properties = runtime.cudaGetDeviceProperties(device)
         cuda_error_check(err)
         env = dict()
+        env["uuid"] = str(uuid.UUID(bytes=device_properties.uuid.bytes))
         env["device_name"] = device_properties.name.decode()
         env["pci_bus_id"] = device_properties.pciBusID
         env["cuda_version"] = driver.CUDA_VERSION