topic MPSS 3.5.1 hasn't been tested in OpenCL* for CPU

clBuildProgram crashes for Xeon Phi

PouryaShirazian — Thu, 06 Aug 2015 00:04:12 GMT

Hi,

I have installed a Xeon Phi on CentOS 6.6. When running my OpenCL application on Intel SDK it works for CPU but crashes when I select the Xeon Phi which shows as "Intel(R) Many Integrated Core Acceleration Card". libOpenCL points to "/opt/intel/opencl/lib64/libOpenCL.so" on my system.

Please advise.

Hi,

Yuri_K_Intel — Thu, 06 Aug 2015 06:40:37 GMT

Hi, Which versions of Intel OpenCL runtime and MPSS do you use? Supported/verified versions for Xeon Phi are: Intel OpenCL runtime - 14.2 Intel MPSS - 3.3.x Thanks, Yuri

MPSS version is 3.5.1. OpenCL

PouryaShirazian — Thu, 06 Aug 2015 17:10:50 GMT

MPSS version is 3.5.1. OpenCL version is 14.2 though.

Thanks

MPSS 3.5.1 hasn't been tested

Yuri_K_Intel — Fri, 07 Aug 2015 06:27:34 GMT

MPSS 3.5.1 hasn't been tested/validated with OpenCL at Xeon Phi. So, I'd recommend switching to a supported version - 3.3.x. Thanks, Yuri

So I installed mpss 3.3.5 and

PouryaShirazian — Fri, 14 Aug 2015 23:03:00 GMT

So I installed mpss 3.3.5 and Opencl SDK 14.2. and running micinfo produces the following output:

System Info
HOST OS : Linux
OS Version : 2.6.32-504.el6.x86_64
Driver Version : 3.3.5-1
MPSS Version : 3.3.5
Host Physical Memory : 7999 MB

Device No: 0, Device Name: mic0

Version
Flash Version : 2.1.02.0391
SMC Firmware Version : 1.17.6900
SMC Boot Loader Version : 1.8.4326
uOS Version : 2.6.38.8+mpss3.3.5
Device Serial Number : ADKC45000259

but my application now fails to create a command-q:

Requested device: Intel(R) Many, Found: Intel(R) Many Integrated Core Acceleration Card
ERROR: [/src/benchapp.cpp:148] TIME: [Fri Aug 14 23:02:20 2015] Failed to create a commandQ for device 1

I fixed the issue by

PouryaShirazian — Fri, 14 Aug 2015 23:39:27 GMT

I fixed the issue by exporting some env variables:

export LD_LIBRARY_PATH=/opt/intel/opencl-1.2-4.5.0.8/lib64/:$LD_LIBRARY_PATH
export MIC_LD_LIBRARY_PATH=/opt/intel/opencl-1.2-4.5.0.8/libmic/:$MIC_LD_LIBRARY_PATH

Also I need to set intel.icd file under /etc/OpenCL/vendors/intel.icd

The content of that file is as folllowing:

/opt/intel/opencl-1.2-4.5.0.8/lib64/libintelocl.so