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49 lines
1.3 KiB
Perl
49 lines
1.3 KiB
Perl
if not terralib.cudacompile then
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print("CUDA not enabled, not performing test...")
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return
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end
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local tid = cudalib.nvvm_read_ptx_sreg_tid_x--terralib.intrinsic("llvm.nvvm.read.ptx.sreg.tid.x",{} -> int)
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local ntid = cudalib.nvvm_read_ptx_sreg_ntid_x -- terralib.intrinsic("llvm.nvvm.read.ptx.sreg.ntid.x",{} -> int)
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theone = global(0)
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theconst = cudalib.constantmemory(int,1)
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terra foo(result : &float)
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result[tid()] = tid() + theone + theconst[0]
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end
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terralib.includepath = terralib.includepath..";/usr/local/cuda/include"
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local C = terralib.includecstring [[
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#include "cuda_runtime.h"
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#include <stdlib.h>
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#include <stdio.h>
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]]
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local R = terralib.cudacompile({ foo = foo, aone = theone, theconst = theconst })
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terra doit(N : int)
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var data : &float
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C.cudaMalloc([&&opaque](&data),sizeof(float)*N)
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var one = 1
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var two = 2
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C.cudaMemcpy(R.aone,&one,sizeof(int),1)
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C.cudaMemcpy(R.theconst,&two,sizeof(int),1)
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var launch = terralib.CUDAParams { 1,1,1, N,1,1, 0, nil }
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R.foo(&launch,data)
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var results : &float = [&float](C.malloc(sizeof(float)*N))
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C.cudaMemcpy(results,data,sizeof(float)*N,2)
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var result = 0.f
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for i = 0,N do
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result = result + results[i]
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end
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return result
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end
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local test = require("test")
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local N = 16
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local expected = (N - 1)*N/2 + 3*N
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test.eq(doit(N),expected)
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