OpenCL* for CPU
Ask questions and share information on Intel® SDK for OpenCL™ Applications and OpenCL™ implementations for Intel® CPU
Announcements
This forum covers OpenCL* for CPU only. OpenCL* for GPU questions can be asked in the GPU Compute Software forum. Intel® FPGA SDK for OpenCL™ questions can be ask in the FPGA Intel® High Level Design forum.
1663 Discussions

Possible bugs in OpenCL drivers

Chris_C_1
Beginner
163 Views

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:

Cheers,
Chris

0 Kudos
6 Replies
Chris_C_1
Beginner
163 Views
Chris_C_1
Beginner
163 Views

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

Jeffrey_M_Intel1
Employee
163 Views

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

Chris_C_1
Beginner
163 Views

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

Chris_C_1
Beginner
163 Views

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/

Reply