topic I also have program which in OpenCL* for CPU

Possible bugs in OpenCL drivers

Chris_C_1 — Wed, 05 Jul 2017 14:42:38 GMT

Hi,

I have discovered several cases where programs compiled and executed on HD Graphics Haswell GT2 Desktop produce different output to on other OpenCL implementations. Please see attached bug reports, which provide additional details and steps to reproduce.

On Xeon-Phi, this kernel causes a segmentation fault during compilation:

http://paste.ubuntu.com/25125643/

Cheers,
Chris

I also have program which

Chris_C_1 — Wed, 05 Jul 2017 21:38:34 GMT

I also have program which trigger assertion errors from within LLVM:

Cheers,
Chris

Chris_C_1 — Fri, 07 Jul 2017 07:26:17 GMT

Here are standalone C files containing kernels which segfault the Vectorizer (pass 'Post-Dominance Frontier Construction') on E5-2620 and i5-4570:

http://paste.ubuntu.com/25037714/
http://paste.ubuntu.com/25037715/
http://paste.ubuntu.com/25037716/
http://paste.ubuntu.com/25037717/
http://paste.ubuntu.com/25037718/
http://paste.ubuntu.com/25037719/
http://paste.ubuntu.com/25037720/
http://paste.ubuntu.com/25037721/
http://paste.ubuntu.com/25037722/

Cheers,
Chris

Another segfault during

Chris_C_1 — Sun, 09 Jul 2017 06:45:42 GMT

Another segfault during compilation: http://paste.ubuntu.com/25051842/

Sorry for the delayed reply.

Jeffrey_M_Intel1 — Thu, 20 Jul 2017 06:01:04 GMT

Sorry for the delayed reply. Thanks for this report. I am investigating these issues and will get back to you soon.

No problem Jeffrey. In the

Chris_C_1 — Mon, 24 Jul 2017 13:42:11 GMT

No problem Jeffrey. In the cases where there's no error messages, I can't weed out obvious duplicates, so apologies if any of those reports are dupes.

Cheers,
Chris

Compilation of this 4 line

Chris_C_1 — Thu, 27 Jul 2017 00:07:00 GMT

Compilation of this 4 line kernel hangs the compiler on GT2: http://paste.ubuntu.com/25180351/

This 1 line kernel segfaults every Intel compiler we're tested, except an i5-4570: http://paste.ubuntu.com/25180582/