In non-interactive mode, create_some_context currently always
chooses the first device of the first platform.  This fails if
this has no devices (eg. it is the wrong one for the available
hardware), and will be slow if if is the CPU.

This patch makes it search through the platforms for a device,
preferring a GPU if available.  As discussed earlier, this will allow
making OpenCL just work (at least for hardware that has a free ICD) by
defaulting to installing all ICDs.

This requires the "Make get_devices() return an empty list instead of
erroring out" fix you just sent upstream.

Thanks for the patch.
I'll first upload fixed PyOpenCL to main, and then work on it.
Probably I'll first want to have some discussion on mailing
list - as I do not use GPGPUs now, I'd like to have opinion
of users of PyOpenCL before introducing such a change.

Best regards.

Dear submitter,

as the package pyopencl has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/748785

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

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pp.
Scott Kitterman (the ftpmaster behind the curtain)