Andreas, I just tried the git version; it works perfectly -- thanks!
R On Thu, Jul 18, 2013 at 7:21 PM, Andreas Kloeckner <[email protected]>wrote: > Hi Russell, > > Russell Power <[email protected]> writes: > > Looking through the pycuda source, it seems like the GIL is being held > when > > performing some of the memcpy operations: memcpy_htod, memcpy_dtoh, and > > their async counterparts. > > > > We noticed that host copies were taking a quite a bit of time and were > > hoping to be able to run some background operations while they are in > > flight. > > > > Is this on purpose, or could we safely change them to release the GIL? I > > was alternatively thinking of doing: > > > > x = ndarray(...) > > GPUArray.to_gpu_async(x, stream) > > > > while not stream.is_done(): > > time.sleep(0) > > > > But this is a bit convoluted. > > Thanks for the suggestion! I don't really see a good reason that would > require holding onto the GIL while a transfer is pending. I've made this > change in git. It'd be great if you could report back on whether these > changes do what you were expecting them to. > > Andreas > -- R
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