On Tue, 11 Oct 2011 17:41:56 -0700, Matthew Graham <m...@cacr.caltech.edu> wrote: > Hi, > > I'm making successive calls to a function with each call requiring an > initialization and a release of the CUDA context. However, memory on the > device is not getting freed between calls. What I have in a call is: > > driver.init() > dev = driver.Device(num) > context = dev.make_context() > print driver.mem_get_info() > mod = compiler.SourceModule(code) > ... # application logic here > context.pop() > > and this is showing: > > Obj 1 > (195731456, 265945088) > (182132736, 265945088) > (168099840, 265945088) > (154075136, 265945088) > Obj 2 > (140050432, 265945088) > (126025728, 265945088) > (112001024, 265945088) > (98009088, 265945088) > Obj 3 > (83984384, 265945088) > Obj 4 > (69959680, 265945088) > (55934976, 265945088) > (41517056, 265945088) > (26443776, 265945088) > Obj 5 > [11/Oct/2011:16:23:57] HTTP Traceback (most recent call last): > File > "/Library/Frameworks/Python.framework/Versions/6.0.0/lib/python2.6/site-packages/cherrypy/_cprequest.py", > line 606, in respond > cherrypy.response.body = self.handler() > File > "/Library/Frameworks/Python.framework/Versions/6.0.0/lib/python2.6/site-packages/cherrypy/_cpdispatch.py", > line 25, in __call__ > return self.callable(*self.args, **self.kwargs) > File "/Users/mjg/Projects/python/kiss/culsp.py", line 203, in culsp > context = dev.make_context() > MemoryError: cuCtxCreate failed: out of memory > > I've tried to put in del calls for the gpuarrays used after popping the > context (as per the 2DFFT and MultipleThreads example codes) but this is not > doing anything. How can I release the memory on the device between calls?
Try pycuda.tools.clear_context_caches(). Andreas
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