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Re: CUDA XCompiler

  • To: mathgroup at smc.vnet.net
  • Subject: [mg122837] Re: CUDA XCompiler
  • From: Oliver Ruebenkoenig <ruebenko at wolfram.com>
  • Date: Fri, 11 Nov 2011 07:33:48 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201111110958.EAA08644@smc.vnet.net>

On Fri, 11 Nov 2011, DmitryG wrote:

> On Oct 13, 2:50 am, Grischika <Grisch... at mail.ru> wrote:
>> Hello!
>> This is initialization code of CUDA:
>> Needs["CUDALink`"]
>> Needs["CCompilerDriver`"]
>> In[]:=CUDAQ[]
>> Out:=True
>>
>>  The command  CUDADot[RandomInteger[1, {5, 5}], RandomInteger[1, {5,
>> 5}]] works as it should.
>>
>> But evaluation of
>> fun = CUDAFunctionLoad["__global__ void zero(int * in, int length) {
>>       int index = threadIdx.x + blockIdx.x * blockDim.x;
>>
>>         if (index < length)
>>            in[index] = 0;
>>     }", "zero", {{_Integer}, _Integer}, {10}]
>> gives the error message:
>> CUDAFunctionLoad::invxpth: The "XCompilerInstallation" option set to
>> $Failed is not valid. "XCompilerInstallation" must be a string
>> pointing to the C compiler directory.
>>
>> So it means that something wrong with C Compiler. All compilations
>> like Compile[... ,CompilationTarget->"C"]  work.
>>
>> Here information about the compiler . Microsoft Visual Studio 10.0
>> Ultimate.
>> In[]:=CCompilers[]
>> Out[]:={{"Name" -> "Visual Studio",
>>   "Compiler" ->
>>    CCompilerDriver`VisualStudioCompiler`VisualStudioCompiler,
>>   "CompilerInstallation" ->
>>    "C:\\Program Files\\Microsoft Visual Studio 10.0",
>>   "CompilerName" -> Automatic}, {"Name" -> "NVIDIACUDA Compiler",
>>   "Compiler" -> NVCCCompiler,
>>   "CompilerInstallation" ->
>>    "C:\\Documents and Settings\\Grigory\\Application \
>> Data\\Mathematica\\Paclets\\Repository\\CUDAResources-Win-8.0.0.7\\\
>> CUDAToolkit\\bin\\", "CompilerName" -> Automatic}}
>>
>> In[]:=CUDACCompilers[]
>> Out[]:={}
>>
>> How to fix this compilation problem?
>
> I have tested this piece of code on my system (also Microsoft Visual
> Studio 10) and I've got the error message
>
> CUDAFunctionLoad::cmpf: The kernel compilation failed. Consider
> setting the option "ShellOutputFunction"->Print to display the
> compiler error message. >>
>
> I cannot say more to this because I am not a C programmer.
>
> I wanted to use simple CUDA commands like CUDADot but they are slower
> the regular commands, so I do not yet see the point in GPU computing
> with Mathematica.
>
> Best,
>
> Dmitry
>
>

-- 

You might want to consider visiting a one of the CUDA seminars; that would 
explain you several of the benefits of using CUDA/OpenGL with M-

http://www.wolfram.com/services/education/seminars/

Oliver



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