Memory leak in CUDALink

*To*: mathgroup at smc.vnet.net*Subject*: [mg115616] Memory leak in CUDALink*From*: Emil Hedevang <emilhedevang at gmail.com>*Date*: Sun, 16 Jan 2011 05:54:56 -0500 (EST)*Reply-to*: comp.soft-sys.math.mathematica at googlegroups.com

Hello, I am playing around with CUDALink on my MacBook Pro and my Mac Pro. I am experiencing memory leaks in many of the built-in functions like CUDAFourier and CUDADot, see the code below. First some information on the computer and the GPU. $Version Needs["CUDALink`"] CUDAQ[] CUDAInformation[1, "Name"] $CUDADevice = 1; Out[1]= "8.0 for Mac OS X x86 (64-bit) (November 13, 2010)" Out[3]= True Out[4]= "GeForce 9600M GT" Then we make a large matrix, approximately 32MB in memory footprint. n = 11; a = RandomReal[{0, 1}, {2^n, 2^n}]; ByteCount[a] Out[8]= 33554600 Finally we alternate between querying how large a percentage of the computer's memory the MathKernel is using and calculating the product of the matrix with itself. As you can see, the percentage increases steadily and if I continue in that fashion the computer will eventually begin to swap and become really slow. RunThrough["ps -p " <> ToString[$ProcessID] <> " -o pmem", ""] c = CUDADot[a, a]; RunThrough["ps -p " <> ToString[$ProcessID] <> " -o pmem", ""] c = CUDADot[a, a]; RunThrough["ps -p " <> ToString[$ProcessID] <> " -o pmem", ""] c = CUDADot[a, a]; RunThrough["ps -p " <> ToString[$ProcessID] <> " -o pmem", ""] Out[9]= 1.7 Out[11]= 5.9 Out[13]= 8.8 Out[15]= 11.4 I should add that the same problem occurs on my Mac Pro with an Nvidia GTX 285 as GPU. Do any of you expecient similar problems? Best regards, Emil Hedevang