[C2hs] Request to C2HS users

Thu May 22 11:10:06 UTC 2014

Great — thanks!

Manuel

Ian Ross <ian at skybluetrades.net>:

> That's right.  I do install the CUDA SDK on Travis, so I end up with a CUDA installation with a working nvcc that the cuda Haskell package can use, but I don't install any drivers, so I don't think I'd be able to actually run any CUDA code (since nVIDIA seem to have removed the emulator that used to be in the SDK -- from a quick search, it seems that Ocelot is the only emulator for Linux now).
> 
> Here's what I do in the regression suite:
> 
> wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1204/x86_64/cuda-repo-ubuntu1204_5.5-0_amd64.deb
> sudo dpkg -i cuda-repo-ubuntu1204_5.5-0_amd64.deb
> sudo apt-get update
> sudo apt-get install cuda-5.5
> 
> That seems to be enough to convince the config scripts for the cuda package that there's a real CUDA installation there, and it's enough to build the package.
> 
> When I have time, I'll play with getting Ocelot working.  Then we'll be able to run the package tests for all of these things as well.
> 
> 
> 
> On 20 May 2014 02:49, Manuel M T Chakravarty <chak at cse.unsw.edu.au> wrote:
> I think, Ryan is wondering about the compilation environment (and I’m, too, to be honest), because the ’cuda’ package depends on the NVIDIA CUDA SDK. In particular, the configure script of the package tries to determine the location of the NVIDIA compiler tools as well as the headers of the various CUDA-related APIs. Hence, even building the package requires a machine with a somewhat working CUDA installation.
> 
> Manuel
> 
> Ian Ross <ian at skybluetrades.net>:
> 
>> No, nothing as clever as that.  I took the strictly low-rent route of only testing that the regression suite packages successfully build.  I don't run the package test suites, so I don't need to run any CUDA code.  What I'd been finding was that most of the problems I'd been seeing with C2HS were things that would be picked up just by trying to build the packages -- out of all the problems I've seen recently, all of them were either related to problems parsing C headers or the CHS files themselves, or to generating invalid Haskell code.  I've yet to see a single problem where C2HS generates Haskell code that compiles but doesn't work.  Also, I didn't even know that such a thing as a CUDA emulator existed!  Now that I do, maybe I'll experiment a bit when I have time and see if I can run the regression suite package test cases as well...
>> 
>> 
>> On 19 May 2014 17:15, Ryan Newton <rrnewton at gmail.com> wrote:
>> Oh, did you use a CUDA emulator on Travis?  (What is the best one these days?)
>> 
>> 
>> 
>> On Sat, May 17, 2014 at 12:55 AM, Ian Ross <ian at skybluetrades.net> wrote:
>> Thanks Ryan,
>> 
>> I got the cuda package (and cufft and OpenCL) building on Travis without too much trouble, after a bit of experimentation on an EC2 instance with the same Linux build as Travis uses.  It was easier than I thought it would be, and the CUDA installation process seems to be getting easier over time, so supporting this sort of thing for newer versions of CUDA should be easy.
>> 
>> Cheers,
>> 
>> Ian.
>> 
>> 
>> 
>> On 16 May 2014 07:59, Ryan Newton <rrnewton at gmail.com> wrote:
>> Hi all,
>> 
>> Sorry for long-delayed response.
>> 
>> Yes, some of our jobs do happen to install accelerate-cuda (like this one, and this one).  We don't have a dedicated set of tests for accelerate-cuda itself.  (But we should soon.  I hope to test all backend ends uniformly.)
>> 
>> We have a pretty heterogeneous config in terms of cuda installs.  Most of our tests run on a set of machines that still have CUDA 4.2, but my own work-station and laptop have 5.5.
>> 
>> Cheers,
>>   -Ryan
>> 
>> 
>> 
>> On Tue, Apr 15, 2014 at 12:22 AM, Manuel M T Chakravarty <chak at cse.unsw.edu.au>wrote:
>> Hi Ian,
>> 
>> We haven’t build the cuda package in a CI environment, but Ryan Newton has Accelerate in on a CI server.
>> 
>> Ryan, are you building with the CUDA backend?
>> 
>> Ian, I’m not sure what you mean by CUDA version 6. I believe the latest CUDA release from NVIDIA is 5.5.
>> 
>> Cheers,
>> Manuel
>> 
>> Ian Ross <ian at skybluetrades.net>:
>>> Hi Manuel (and/or Trevor!),
>>> 
>>> Have you had any luck in building CUDA on Travis or any other CI environment?  I've not managed to build it on my desktop machine, but that's mostly due to not having an NVIDIA card and to being on Arch Linux, where the current CUDA install is version 6 instead of 5...  This C2HS regression suite idea has already turned out to be useful, catching a couple of silly little bugs I'd introduced, and I'd really like to include as many packages as possible, and to have it run as a CI test.
>>> 
>>> I'll have a try on Travis myself, but it would be useful to know if you've already figured out what's needed.
>>> 
>>> Thanks,
>>> 
>>> Ian.
>>> 
>>> 
>>> 
>>> On 2 April 2014 06:43, Manuel M T Chakravarty <chak at cse.unsw.edu.au> wrote:
>>> Good plan! Please include 
>>> 
>>>   http://hackage.haskell.org/package/cuda
>>> 
>>> Manuel
>>> 
>>> Ian Ross <ian at skybluetrades.net>:
>>> 
>>>> Dear All,
>>>> 
>>>> I'm trying to make a list of packages that depend on C2HS, in order to make a regression suite to test new releases.  I slightly broke things in the last release and only found out about it when people started reporting regressions when trying to build packages that use C2HS.  The number of moving parts involved make it difficult to write a test suite with full coverage, so the best approach seems to be to make a list of packages and make sure that these all build before doing a release.
>>>> 
>>>> I've not been able to figure out a way to do reverse dependency searches on Hackage for build tools, hence the email.
>>>> 
>>>> If you have a package that uses C2HS that you'd like added to the regression suite, let me know.
>>>> 
>>>> Cheers,
>>>> 
>>>> Ian.
>>>> 
>>>> -- 
>>>> Ian Ross   Tel: +43(0)6804451378   ian at skybluetrades.net   www.skybluetrades.net
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>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> Ian Ross   Tel: +43(0)6804451378   ian at skybluetrades.net   www.skybluetrades.net
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>> 
>> 
>> 
>> 
>> 
>> -- 
>> Ian Ross   Tel: +43(0)6804451378   ian at skybluetrades.net   www.skybluetrades.net
>> 
>> 
>> 
>> 
>> -- 
>> Ian Ross   Tel: +43(0)6804451378   ian at skybluetrades.net   www.skybluetrades.net
> 
> 
> 
> 
> -- 
> Ian Ross   Tel: +43(0)6804451378   ian at skybluetrades.net   www.skybluetrades.net
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