Bug#877316: clblas: Crashes on single-precision-only hardware, due to double-precision literals

[Ghislain Vaillant]

Hi Rebecca,

On Sat, 30 Sep 2017 14:47:03 +0100 "Rebecca N. Palmer" 
<rebecca_palmer at zoho.com> wrote:
> Package: libclblas2
> Version: 2.12-1
> Control: tags -1 upstream
> Control: affects -1 beignet-opencl-icd
> 
> Some clblas operations use '0.0' (a double-precision literal) not '0.0f' 
> (a single-precision literal) even when processing single-precision arrays.
> 
> This causes it to crash on GPUs that don't support double precision:
> 
> ASSERTION FAILED: sel.hasDoubleType()
>    at file 
> /build/beignet-1.3.1/backend/src/backend/gen_insn_selection.cpp, 
> function void 
> gbe::ConvertInstructionPattern::convertBetweenFloatDouble(gbe::Selection::Opaque&, 
> const gbe::ir::ConvertInstruction&, bool&) const, line 6148
> 
> This particular 0.0 appears to have come from 
> http://sources.debian.net/src/clblas/2.12-1/src/library/blas/AutoGemm/KernelOpenCL.py/#L368, 
> but there may well be more.
> 
> This issue also exists in upstream git.

Are you aware of an existing bug filed upstream for this? If so, could 
you link it to this bug report with an appropriate forward comand ?

Otherwise, would you please consider filing the bug upstream, since you 
already triaged it as non Debian specific.

Thanks for investigating this.

Ghis