Thank your for your suggestion. 
There's in fact issue with the version of the compiler. 
Works fine with gcc *5.4.0*
The *6.3.1*(the version I currently use) in fact needs to be passed 
*-Wno-narrowing 
*parameter to compile

On Wednesday, April 12, 2017 at 12:25:26 AM UTC+3, nouiz wrote:
>
> This was also reported here:
>
> https://github.com/Theano/libgpuarray/issues/403
>
> I link to a branch in this issue that could fix it. Can you try it?
>
> What g++ version do you use? I think the problem is that you use a more 
> recent g++ that is more strict.
>
> Fred
>
> On Sun, Apr 9, 2017 at 12:39 PM Dmitriy Salnikov <[email protected] 
> <javascript:>> wrote:
>
>> Greetings.
>>
>> Trying to move from the old cuda backend to gpuarray. After 
>> unsuccessfully trying to compile some functions decided to try the default 
>> mnist from lasagne. Turns out it fails with the same error.
>>
>> *nvcc version:*
>>  nvcc: NVIDIA (R) Cuda compiler driver
>>  Copyright (c) 2005-2016 NVIDIA Corporation
>>  Built on Tue_Jan_10_13:22:03_CST_2017
>>  Cuda compilation tools, release 8.0, V8.0.61
>>
>> *theano version:*
>> Version: 0.9.0
>>
>> *lasagne version:*
>> Version: 0.2.dev1
>>
>> *os*:
>> arch linux
>>
>> I tried clearing cache and reinstalling everything, unfortunately this 
>> doesn't work.
>>
>> please look at the stacktrace in the gist.
>> https://gist.github.com/cb408860543ea0f0d7f4997b3f959d34.
>>
>>
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