OpenCL does not detect Xeon Phi - opencl

Question

We created a small program to detect Xeon Phi, here is our code snippet
std::vector<cl::Platform> platformList(5);
std::vector<cl::Device> deviceList;
cl::Platform::get(&platformList);
if(platformList.size() == 0){
std::cout << "No Platforms found. Check OpenCL installation!" << std::endl;
exit(1);
}
for(i=0; i<platformList.size(); i++){
// for(i=0; i<1; i++){
std::cout << platformList[i].getInfo<CL_PLATFORM_NAME>()<< std::endl;
platformList[i].getDevices(CL_DEVICE_TYPE_ALL, &deviceList);
if(deviceList.size() == 0){
std::cout << "No Devices found. Check OpenCL installation!" << std::endl;
exit(1);
}
for(j=0; j<deviceList.size(); j++){
// dims = deviceList[j].getInfo<CL_DEVICE_MAX_WORK_ITEM_SIZES>();
// for(k=0; k<dims.size(); k++)
// std::cout << dims[k] << std::endl;
std::cout << deviceList[j].getInfo<CL_DEVICE_NAME>()<< std::endl;
}
}
cl::Device device = deviceList[j-1];
std::cout << "Using device: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
but it does not detect the Phi, we get only this output;
Intel(R) OpenCL
Intel(R) Xeon(R) CPU E5-2609 v2 # 2.50GHz
Using device: Intel(R) Xeon(R) CPU E5-2609 v2 # 2.50GHz
Hello World
Do you know what are we doing wrong?
P.S. Below can you find micinfo output
MicInfo Utility Log
Copyright 2011-2013 Intel Corporation All Rights Reserved.
Created Thu Oct 2 15:04:08 2014
System Info
HOST OS : Linux
OS Version : 2.6.32-431.el6.x86_64
Driver Version : 3.2-1
MPSS Version : 3.2
Host Physical Memory : 16274 MB
Device No: 0, Device Name: mic0
Version
Flash Version : 2.1.02.0390
SMC Firmware Version : 1.16.5078
SMC Boot Loader Version : 1.8.4326
uOS Version : 2.6.38.8+mpss3.2
Device Serial Number : ADKC32800437
Board
Vendor ID : 0x8086
Device ID : 0x225d
Subsystem ID : 0x3608
Coprocessor Stepping ID : 2
PCIe Width : Insufficient Privileges
PCIe Speed : Insufficient Privileges
PCIe Max payload size : Insufficient Privileges
PCIe Max read req size : Insufficient Privileges
Coprocessor Model : 0x01
Coprocessor Model Ext : 0x00
Coprocessor Type : 0x00
Coprocessor Family : 0x0b
Coprocessor Family Ext : 0x00
Coprocessor Stepping : C0
Board SKU : C0PRQ-3120/3140 P/A
ECC Mode : Enabled
SMC HW Revision : Product 300W Active CS
Cores
Total No of Active Cores : 57
Voltage : 0 uV
Frequency : 1100000 kHz
Thermal
Fan Speed Control : On
Fan RPM : 1200
Fan PWM : 20
Die Temp : 45 C
GDDR
GDDR Vendor : Elpida
GDDR Version : 0x1
GDDR Density : 2048 Mb
GDDR Size : 5952 MB
GDDR Technology : GDDR5
GDDR Speed : 5.000000 GT/s
GDDR Frequency : 2500000 kHz
GDDR Voltage : 1501000 uV

Answer 1

You might want to look at https://software.intel.com/en-us/articles/opencl-runtime-release-notes. It is more recent than the page Cicada pointed you to and provides a link to Intel® OpenCL™ Runtime 14.2.
The libmic_device.so is included with the OpenCL runtime and is, by default, in /opt/intel/opencl{version_number}/lib64. You will want to make sure that path is in your LD_LIBRARY_PATH environment variable. You will also want to make sure that /opt/intel/opencl{version_number}/mic is in your MIC_LD_LIBRARY_PATH environment variable.
You already have the Intel MPSS installed; otherwise micinfo would not work. The libcoi_host.so is included in the MPSS and installs in /usr/lib64, which is already in your library search path.
The version of the MPSS that you are running is 3.2-1. The "What's new" notes for the OpenCL runtime 14.1 on the release notes web page says that version 14.1 is unstable under MPSS 3.2-1. I am trying to find out if there is a different version of the runtime you can use with MPSS 3.2-1 that is more stable or if the only recommendation is to install a newer MPSS. You can find the latest MPSS releases at https://software.intel.com/en-us/articles/intel-manycore-platform-software-stack-mpss.