ID 683846
Date 12/13/2021
Public

## 8.1. Setting up the Emulator

If you installed the Intel® FPGA SDK for OpenCL™ Pro edition with administrator privileges, no additional setup is needed. If you did not install the Intel® FPGA SDK for OpenCL™ with administrator privileges, you must perform some additional steps to enable the emulator.

If you did not install the Intel® FPGA SDK for OpenCL™ with administrator privileges, manually set up the emulator installable client driver (ICD) entry:
• Linux: Ensure that the file /etc/OpenCL/vendors/Intel_FPGA_SSG_Emulator.icd matches the file found in the directory that the environment variable INTELFPGAOCLSDKROOT specifies. The INTELFPGAOCLSDKROOT environment variable points to the location of the SDK installation.

If the files do not match, or if it is missing from /etc/OpenCL/vendors, copy the Intel_FPGA_SSG_Emulator.icd file from the location specified by the INTELFPGAOCLSDKROOT environment variable to the /etc/OpenCL/vendors directory.

• Windows: Ensure that the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\OpenCL\Vendors contains the following value: [HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\OpenCL\Vendors] "intelocl64_emu.dll"=dword:00000000
Note:

The emulator in Intel® FPGA SDK for OpenCL™ Pro Edition is built with GCC 7.2.0 as part of the offline compiler. When executing the host program for an emulated OpenCL device, the version of libstdc++.so must be at least that of GCC 7.2.0. In other words, the LD_LIBRARY_PATH environment variable must ensure that the correct version of libstdc++.so is found.

If the correct version of libstdc++.so is not found, the call to clGetPlatformIDs function fails to load the FPGA emulator platform and returns CL_PLATFORM_NOT_FOUND_KHR (error code -1001). Depending on which version of libstdc++.so is found, the call to clGetPlatformIDs may succeed, but a later call to the clCreateContext function may fail with CL_DEVICE_NOT_AVAILABLE (error code -2).

If the LD_LIBRARY_PATH does not point to a compatible libstdc++.so, use the following syntax to invoke the host program:

env LD_LIBRARY_PATH=<path to compatible libstdc++.so>:\$LD_LIBRARY_PATH <host> [host arguments]