{- Copyright (c) 2011 Luis Cabellos, All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of nor the names of other contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -} import Control.Parallel.OpenCL import Foreign( castPtr, nullPtr, sizeOf ) import Foreign.C.Types( CFloat ) import Foreign.Marshal.Array( peekArray, withArray ) import Data.List( foldl' ) import Control.Monad( forM_, forM ) programSource :: String programSource = "__kernel void duparray(__global float *in, __global float *out ){\n int id = get_global_id(0);\n out[id] = 2*in[id] + id;\n}" sumres :: Num a => (a,a,a) -> (a,a,a) -> (a,a,a) sumres (t1,t2,t3) (u1,u2,u3) = (t1+u1,t2+u2,t3+u3) main :: IO () main = do -- Initialize OpenCL (platform:_) <- clGetPlatformIDs (dev:_) <- clGetDeviceIDs platform CL_DEVICE_TYPE_ALL context <- clCreateContext [] [dev] print q <- clCreateCommandQueue context dev [CL_QUEUE_PROFILING_ENABLE] -- Initialize Kernel program <- clCreateProgramWithSource context programSource clBuildProgram program [dev] "" kernel <- clCreateKernel program "duparray" -- run tests forM_ [100,200..30000] $ \s -> do let original = [0 .. s] :: [CFloat] n = 50 :: Double res <- forM [0..n] $ \_ -> do (t1,t2,t3,_) <- executeArray original context q kernel return (t1,t2,t3) let (t1,t2,t3) = foldl' sumres (0,0,0) res putStrLn $ show s ++ "\t" ++ show (fromIntegral t1/n) ++ "\t" ++ show (fromIntegral t2/n) ++ "\t" ++ show (fromIntegral t3/n) return () executeArray :: [CFloat] -> CLContext -> CLCommandQueue -> CLKernel -> IO (CLulong, CLulong, CLulong, [CFloat]) executeArray original ctx q krn = withArray original $ \input -> do mem_in <- clCreateBuffer ctx [CL_MEM_READ_ONLY] (vecSize, nullPtr) mem_out <- clCreateBuffer ctx [CL_MEM_WRITE_ONLY] (vecSize, nullPtr) clSetKernelArgSto krn 0 mem_in clSetKernelArgSto krn 1 mem_out -- Put Input eventWrite <- clEnqueueWriteBuffer q mem_in True 0 vecSize (castPtr input) [] -- Execute Kernel eventExec <- clEnqueueNDRangeKernel q krn [length original] [1] [eventWrite] -- Get Result eventRead <- clEnqueueReadBuffer q mem_out True 0 vecSize (castPtr input) [eventExec] _ <- clWaitForEvents [eventRead] t_start0 <- clGetEventProfilingInfo eventWrite CL_PROFILING_COMMAND_START t_end0 <- clGetEventProfilingInfo eventWrite CL_PROFILING_COMMAND_END let t_write = t_end0 - t_start0 t_start1 <- clGetEventProfilingInfo eventExec CL_PROFILING_COMMAND_START t_end1 <- clGetEventProfilingInfo eventExec CL_PROFILING_COMMAND_END let t_exec = t_end1 - t_start1 t_start2 <- clGetEventProfilingInfo eventRead CL_PROFILING_COMMAND_START t_end2 <- clGetEventProfilingInfo eventRead CL_PROFILING_COMMAND_END let t_read = t_end2 - t_start2 result <- peekArray (length original) input return (t_write,t_exec,t_read,result) where elemSize = sizeOf (0 :: CFloat) vecSize = elemSize * length original