Re: RFS: viennacl

[Michael Wild <themiwi@gmail.com>]

On Fri 19 Aug 2011 12:02:17 AM CEST, Michael Tautschnig wrote:
> Hi Michael,
> 
> I'm sorry about the late reply.
> 
> [...]
>>
>> What does the following simple program print (link it against 
>> libOpenCL)?
>>
> [...]
> 
> Built and run in gdb for additional information; the actual output is at the
> very end.
> 
> (gdb) catch throw
> Catchpoint 1 (throw)
> (gdb) r
> Starting program: /home/tautschnig/debian/viennacl/test 
> [Thread debugging using libthread_db enabled]
> Catchpoint 1 (exception thrown), 0x00007ffff798b1b0 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> (gdb) whe
> #0  0x00007ffff798b1b0 in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> #1  0x000000000040506f in viennacl::ocl::error_checker<void>::raise_exception (err=-1001) at viennacl-1.1.2/debian/libviennacl-dev/usr/include/viennacl/ocl/error.hpp:569
> #2  0x0000000000402b57 in viennacl::ocl::error_checker<void>::checkError (err=-1001, file=..., func=..., line=49)
>     at viennacl-1.1.2/debian/libviennacl-dev/usr/include/viennacl/ocl/error.hpp:585
> #3  0x0000000000402878 in viennacl::ocl::platform::platform (this=0x7fffffffe5c0) at viennacl-1.1.2/debian/libviennacl-dev/usr/include/viennacl/ocl/platform.hpp:49
> #4  0x000000000040142c in main () at test.cpp:6
> (gdb) list test.cpp:6
> 1 #include <viennacl/ocl/platform.hpp>
> 2 using namespace std;
> 3 int main()
> 4 {
> 5     vector<viennacl::ocl::device> devices =
> 6         viennacl::ocl::platform().devices();
> 7     vector<viennacl::ocl::device>::const_iterator f = devices.begin(),
> 8                                                   e = devices.end();
> 9     for (; f!=e; ++f)
> 10      {
> (gdb) cont
> Continuing.
> terminate called after throwing an instance of 'viennacl::ocl::unknown_error'
>   what():  ViennaCL: FATAL ERROR: ViennaCL encountered an unknown OpenCL error. In some cases, this might be due to an invalid global work size, but it can also be due to several compilation errors.
> If you think that this is a bug in ViennaCL, please report it at viennacl-support@lists.sourceforge.net and supply at least the following information:
>  * Operating System
>  * Which OpenCL implementation (AMD, NVIDIA, etc.)
>  * ViennaCL version
> Many thanks in advance!
> 
> 
> Hope this helps,
> Michael

Oops. That code should just have listed the available compute 
devices... I'll talk to upstream about how to detect OpenCL support 
properly.

Thanks

Michael