Using PyCUDA 2011.1.2 built against CUDA 4.0.17 on a 64-bit Linux
system containing two GPU devices with compute capability >= 2.0, this
code
import pycuda.driver as drv
import atexit
drv.init()
dev0 = drv.Device(0)
dev1 = drv.Device(1)
ctx0 = dev0.make_context()
ctx1 = dev1.make_context()
atexit.register(ctx0.pop)
atexit.register(ctx1.pop)
ctx1.enable_peer_access(ctx0)
results in the following exception:
Traceback (most recent call last):
File "peer_memcpy.py", line 22, in <module>
ctx1.enable_peer_access(ctx0)
pycuda._driver.LogicError: cuCtxEnablePeerAccess failed: invalid device
Why is this happening?
L.G.
_______________________________________________
PyCUDA mailing list
[email protected]
http://lists.tiker.net/listinfo/pycuda
