[Beignet] build problems: ASSERTION FAILED: Fail to create the gen context

[Yichao Yu]

On Mon, Jul 7, 2014 at 9:16 AM, Zhigang Gong
<zhigang.gong at linux.intel.com> wrote:
>> -----Original Message-----
>> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
>> Igor Gnatenko
>> Sent: Friday, July 4, 2014 7:53 PM
>> To: Zhigang Gong
>> Cc: Adel Gadllah; An open source open CL implemenation for Intel platform
>> Subject: Re: [Beignet] build problems: ASSERTION FAILED: Fail to create the gen
>> context
>>
>> Hi,
>> On Fri, 2014-07-04 at 14:09 +0800, Zhigang Gong wrote:
>> > On Fri, Jul 04, 2014 at 07:53:42AM +0200, Adel Gadllah wrote:
>> > > Zhigang Gong:
>> > > >On Fri, Jul 04, 2014 at 01:33:14AM +0400, Igor Gnatenko wrote:
>> > > >>Hi,
>> > > >>
>> > > >>I've long time no tested beignet builds. Now I've updated it to
>> > > >>0.9.0 in Fedora rawhide[0].
>> > > >>
>> > > >>And it failed to build.
>> > > >>
>> > > >>Generating ../../utests/../kernels/compiler_ceil.bin
>> > > >>Unknown opt
>> > > >>/builddir/build/BUILD/Beignet-0.9.0-Source/build/backend/src/gbe_bin_g
>> enerater: option requires an argument -- 't'
>> > > >>
>> > > >>ASSERTION FAILED: Fail to create the gen context
>> > > >>   at
>> > > >>file
>> > > >>/builddir/build/BUILD/Beignet-0.9.0-Source/backend/src/backend/gen
>> > > >>_program.cpp, function virtual gbe::Kernel*
>> > > >>gbe::GenProgram::compileKernel(const gbe::ir::Unit&, const
>> > > >>string&, bool), line 167
>> > > >>
>> > > >>And etc. I'm attaching FULL build log.
>> > > >>
>> > > >>[0]http://pkgs.fedoraproject.org/cgit/beignet.git/commit/?id=0c45e
>> > > >>57cbecf72e1a5f243bbc0f375e3f19a2b03
>> > > >>--
>> > > >>-Igor Gnatenko
>> > > >
>> > > >>/builddir/build/BUILD/Beignet-0.9.0-Source/src/GetGenID.sh: line
>> > > >>3: lspci: command not found
>> > > >>-- Platform Gen PCI id is
>> > > >The root cause is that now beignet will build internal binary
>> > > >kernels according current build host's Gen VGA PCI id.
>> > > This can't work for distributions that want to ship beignet. The
>> > > system it gets build on is not the one it runs on. Also distribution
>> > > build systems tend to be virtual machines that do not have any real
>> > > (or intel) vga hardware.
>> > You are right, this is a problem for distributions. I just realized
>> > this issue when I replied to Igor. We will discuss how to make it friendly for
>> package maintainer soon.
>> Why do we need find out VGA PCI id?
> As beignet need to generate binary code for builtin kernels, and currently beignet choose to generate the target binary code directly.
> We are considering to change this behavior to generate llvm bitcode level binary code for the internal kernels. Then we can fix this
> Issue completely.
>> > Thanks for pointing this out.

In the mean time, wouldn't it be nice to also fail explicitly when no
valid PCI id is found? (got a error report[1] caused by this and it
took some iterations to pin the error)

[1] https://aur.archlinux.org/packages/beignet-git/

>>
>> --
>> -Igor Gnatenko
>
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