Re: [Haskell-cafe] install cuda
yes, the installation seems to work fine now. However, doing the following test in ghci Prelude :m +Foreign.CUDA Prelude Foreign.CUDA props 0 Loading package bytestring-0.9.2.1 ... linking ... done. Loading package cuda-0.5.0.0 ... linking ... done. results in a crash. The CUDA version I am using is 4.1.28. You think there is something I could try to analyze this further ? Thanks a lot for your help Peter Am 31.03.2013 21:48, schrieb Geoffrey Mainland: You need to generate the configure script using autoconf: https://www.gnu.org/software/autoconf/manual/autoconf.html#autoconf-Invocation On 03/31/2013 08:27 PM, Peter Caspers wrote: Hmm, I get Configuring cuda-0.5.0.0... setup.exe: configure script not found. can you help ? Peter I was able to install the cuda package under 32-bit GHC 7.4.2 using the 5.0 SDK and use it from within ghci. This required using my fork of the cuda repo and following the instructions in my WINDOWS.md. Make sure nvcc is in your path (the CUDA installer should have made this so) and try 'cabal configure'. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] install cuda
indeed, not very helpful ... When I installed Cuda the latest driver (296.0) that was running on my laptop (a W520 ThinkPad) was not sufficient for version 5.0. However as I noticed today in February Lenovo released a driver update (311.0) and with that 5.0 is in fact running. :-) With that the Haskell bindings work well. Thanks again very much, Geoff Peter Am 01.04.2013 12:25, schrieb Geoffrey Mainland: That is not a very elucidating crash message, so I don't see how to proceed. After ghci print Loading package cuda-0.5.0.0 ... linking ... done. it just exits? No error dialog, nothing? Did you try building any of the examples in the cuda package that don't require ghci? Is your graphics card incompatible with CUDA 5.0, or do you just not want to update your driver? Geoff On 04/01/2013 10:33 AM, Peter Caspers wrote: yes, the installation seems to work fine now. However, doing the following test in ghci Prelude :m +Foreign.CUDA Prelude Foreign.CUDA props 0 Loading package bytestring-0.9.2.1 ... linking ... done. Loading package cuda-0.5.0.0 ... linking ... done. results in a crash. The CUDA version I am using is 4.1.28. You think there is something I could try to analyze this further ? Thanks a lot for your help Peter Am 31.03.2013 21:48, schrieb Geoffrey Mainland: You need to generate the configure script using autoconf: https://www.gnu.org/software/autoconf/manual/autoconf.html#autoconf-Invocation On 03/31/2013 08:27 PM, Peter Caspers wrote: Hmm, I get Configuring cuda-0.5.0.0... setup.exe: configure script not found. can you help ? Peter I was able to install the cuda package under 32-bit GHC 7.4.2 using the 5.0 SDK and use it from within ghci. This required using my fork of the cuda repo and following the instructions in my WINDOWS.md. Make sure nvcc is in your path (the CUDA installer should have made this so) and try 'cabal configure'. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] install cuda
Hi, thank you. I could resolve some of the problems by removing spaces from the Cuda and Haskell platform installation paths. Now I am left wiht the following error: configure:3596: checking for library containing cuDriverGetVersion configure:3627: c:\HaskellPlatform\2012.4.0.0\mingw\bin\gcc.exe -o conftest.exe -Wl,--hash-size=31 -Wl,--reduce-memory-overheads -I/c/CUDA/NVIDIA_GPU_Computing_Toolkit/CUDA/v4.1/include -L/c/CUDA/NVIDIA_GPU_Computing_Toolkit/CUDA/v4.1/lib conftest.c 5 C:\Users\Peter\AppData\Local\Temp\ccOsnsjD.o:conftest.c:(.text+0xc): undefined reference to `cuDriverGetVersion' collect2: ld returned 1 exit status In fact the library path -L/c/CUDA/NVIDIA_GPU_Computing_Toolkit/CUDA/v4.1/lib is not correct (there are two subfolders x64 and Win32 containing the lib files) and I do not see where this path is actually taken from. I defined an enviroment variable LD_LIBRARY_PATH with the correct paths (separated by a colon), but it seems to be ignored. Also copying the lib files to the path I see in the log does not help. Do you have any hint for me concerning this ? Peter Am 31.03.2013 00:56, schrieb Henk-Jan van Tuyl: On Sat, 30 Mar 2013 20:43:58 +0100, Peter Caspers pcaspers1...@gmail.com wrote: Hi, I am trying to install the cuda package on a Windows 7 enviroment. However I run into an error and can not figure out, what it is. : : configure: error: C compiler cannot create executables See `config.log' for more details : The message says it all: See `config.log' for more details The config.log file is probably in the directory where cabal-install unpacks it (%appdata%\cabal\cuda-revision); you can also use the commands: cabal unpack cuda cd cuda cabal install notepad config.log I just had the same error message for another package; from the config.log file it became clear, that the linker could not find the necessary library. Make sure, that the libraries and header files can be found by the compiler and linker, by setting the proper environment variables, see [0] Regards, Henk-Jan van Tuyl [0] http://www.haskell.org/haskellwiki/Windows#Tools_for_compilation ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] install cuda
The environment variable should probably be LIBRARY_PATH; I use a semicolon as separator. See also LD_LIBRARY_PATH vs LIBRARY_PATH[0]. yes, it's LIBRARY_PATH. The x64 version of cuda.lib is not recognized at all (same error message as if the file was not existent). The Win32 version works, but results in configure:3627: c:\HaskellPlatform\2012.4.0.0\mingw\bin\gcc.exe -o conftest.exe -Wl,--hash-size=31 -Wl,--reduce-memory-overheads -I/c/CUDA/NVIDIA_GPU_Computing_Toolkit/CUDA/v4.1/include -L/c/CUDA/NVIDIA_GPU_Computing_Toolkit/CUDA/v4.1/lib conftest.c -lcuda 5 C:\Users\Peter\AppData\Local\Temp\ccOwCQ6n.o:conftest.c:(.text+0xc): undefined reference to `cuDriverGetVersion' collect2: ld returned 1 exit status I ran nm on cuda.lib and got the entry nvcuda.dll: I .idata$4 I .idata$5 I .idata$6 T .text U _IMPORT_DESCRIPTOR_nvcuda I _imp__cuDriverGetVersion@4 T cuDriverGetVersion@4 this looks ok so far. Running nm on the x64 version of the lib file results in rubbish output (consistent with the observation above). I understand that LD_LIBRARY_PATH is used to look up to dll when running the program (is that correct?). However we are not at this point yet, are we, since the error occurs on the gcc invocation ? Try my fork: https://github.com/mainland/cuda In particular, read WINDOWS.md. I also read Geoffreys WINDOWS.md and understood that configuring dll names are only necessary when using ghci, not for compiled programs (nothing to do for this case ?) and in particular not for installing the package ? Actually the dll is not named nvcuda.dll as indicated in the nm output, but rather cudart32_41_28.dll I suppose and this file is located in the bin subfolder. I should set LD_LIBRARY_PATH to the bin folder, yes ? Should I configure this dll name for package installation already (i.e. in addition to what is mentioned in WINDOWS.md) ? If yes, how ? Thank you Peter ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] install cuda
yes I more or less saw this in the meantime, too. Actually modifying the
source code on which the error is reported from
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME Haskell CUDA bindings
| #define PACKAGE_TARNAME cuda
...
| #ifdef __cplusplus
| extern C
| #endif
| char cuDriverGetVersion ();
| int
| main ()
| {
| return cuDriverGetVersion ();
| ;
| return 0;
| }
to (for example)
#include stdlib.h
#include stdio.h
#include string.h
#include cuda.h
int
main( int argc, char** argv)
{
int driverVersion = 0;
cuDriverGetVersion(driverVersion);
printf(version = %d\n,driverVersion);
return 0;
}
let me compile, link and run without errors. Alright, got it now, I will
try your github. Do you think it works with CUDA 4.1 ? On my laptop this
is the latest version that runs due to the card driver.
Thanks in any case
Peter
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] install cuda
Hmm, I get Configuring cuda-0.5.0.0... setup.exe: configure script not found. can you help ? Peter I was able to install the cuda package under 32-bit GHC 7.4.2 using the 5.0 SDK and use it from within ghci. This required using my fork of the cuda repo and following the instructions in my WINDOWS.md. Make sure nvcc is in your path (the CUDA installer should have made this so) and try 'cabal configure'. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] install cuda
Hi, I am trying to install the cuda package on a Windows 7 enviroment. However I run into an error and can not figure out, what it is. Can someone help ? Thanks a lot Peter C:\Users\Peter\_dev\haskellcabal install cuda Resolving dependencies... [1 of 1] Compiling Main ( C:\Users\Peter\AppData\Local\Temp\cuda-0.5.0.1-11856\cuda-0.5.0.1\Setup.hs, C:\Users\Peter\AppData\Local\Temp\cuda-0.5.0.1 -11856\cuda-0.5.0.1\dist\setup\Main.o ) Linking C:\Users\Peter\AppData\Local\Temp\cuda-0.5.0.1-11856\cuda-0.5.0.1\dist\setup\setup.exe ... Configuring cuda-0.5.0.1... cygwin warning: MS-DOS style path detected: C:\Users\Peter\AppData\Roaming\cabal/share/config.site Preferred POSIX equivalent is: /cygdrive/c/Users/Peter/AppData/Roaming/cabal/share/config.site CYGWIN environment variable option nodosfilewarning turns off this warning. Consult the user's guide for more details about POSIX paths: http://cygwin.com/cygwin-ug-net/using.html#using-pathnames checking for gcc... C:\Program Files (x86)\Haskell Platform\2012.4.0.0\mingw\bin\gcc.exe checking whether the C compiler works... no configure: error: in `/cygdrive/c/Users/Peter/AppData/Local/Temp/cuda-0.5.0.1-11856/cuda-0.5.0.1': configure: error: C compiler cannot create executables See `config.log' for more details cabal: Error: some packages failed to install: cuda-0.5.0.1 failed during the configure step. The exception was: ExitFailure 77 ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Overloading
In C++ it is perfectly normal to have overloaded functions like f : Int - Int - Int f : Int - Char - Int Something that may not be obvious about Haskell is that Haskell does NOT have overloaded functions/operators at all. thanks, this was the core of my question. So by example, if I define a Date type as data Date = Date Int deriving Show representing a date by its serial number and want two constructors (conditions are only examples here) -- smart constructor with serialNumber date serialNumber | serialNumber 0 = Date serialNumber | otherwise = error (invalid serialNumber ++ show serialNumber) -- smart constructor with day month year date2 day month year | month = 1 month =12 = undefined | otherwise = error (invalid month ++ show month) there is no way of naming both functions date (instead of date2 above, which compiles), right ? I still think the basic reason is that date 5 would then either refer to the first constructor (i.e. representing a date with serial number 5) or a partial application of the second constructor (i.e. representing a function taking month and year and returning the date 5th month, year). If this is the case, what would be the natural Haskell way of organizing the smart constructors ? Just number them as above ? Or naming them dateFromSerialNumber, dateFromDayMonthYear ? Or would you do it differently from the start ? Thank you Peter ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Overloading
Hi Daniel, Instead of raising an error it's more secure to return a Maybe value. date :: Int - Maybe Date date serialNumber | serialNumber 0 = Just $ Date serialNumber | otherwise= Nothing yes, I understand (Maybe seems the equivalent of c++'s boost::optionalT). -- smart constructor with day month year date2 day month year | month = 1 month =12 = undefined | otherwise = error (invalid month ++ show month) To increase type safety it's a good idea to use as much explicit data types instead of Int values as possible: data Month = January | ... ok, I will try to change my code in that direction. The idea is clear. I would use the descriptive names but leave out the 'date', because you could still have: import qualified Date Date.fromSerialNumber also clear, yes. I think I have a better starting point now. Not impossible that I will come back later with further questions :-) Thank you for your help Peter ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Overloading
Hi, I just started playing around a bit with Haskell, so sorry in advance for very basic (and maybe stupid) questions. Coming from the C++ world one thing I would like to do is overloading operators. For example I want to write (Date 6 6 1973) + (Period 2 Months) for some self defined types Date and Period. Another example would be (Period 1 Years) + (Period 3 Months). Just defining the operator (+) does not work because it collides with Prelude.+. I assume using fully qualified names would work, but that is not what I want. So maybe make the types instances of typeclasses? This would be Num for (+) I guess. For the first example above it will not work however, alone for it is not of type a - a - a. Also the second example does not fit, because I would have to make Period an instance of Num, which does not make sense, because I can not multiply Periods (for example). Am I missing something or is that what I am trying here just impossible by the language design (and then probably for a good reason) ? A second question concerns the constructors in own datatypes like Date above. Is it possible to restrict the construction of objects to sensible inputs, i.e. reject something like Date 50 23 2013 ? My workaround would be to provide a function say date :: Int-Int-Int-Date checking the input and returning a Date object or throw an error if the input does not correspond to a real date. I could then hide the Date constructor itself (by not exporting it). However this seems not really elegant. Also again, taking this way I can not provide several constructors taking inputs of different types, can I ? Thanks a lot Peter ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Overloading
Thank you all for your answers, this helps a lot. To clarify my last point ... Also again, taking this way I can not provide several constructors taking inputs of different types, can I ? Sorry, didn't get what you mean here. In C++ it is perfectly normal to have overloaded functions like f : Int - Int - Int f : Int - Char - Int in coexistence, because the compiler can infer (at compile time) what function to call by looking at the arguments types. In Haskell I think this is not possible simply due to the flexibility given by partial function application, i.e. f 5 would not be well defined any more, it could be Int - Int or Char - Int. Thanks again and kind regards Peter ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
