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JGoer1's avatar
JGoer1
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6 years ago

Issues running Hello World openCL example missing libaltera_a10_ref_mmd.so

I'm trying to compile the hello_world openCL example. At first I was having an issue where it couldn't load the openCL platform. I got past that error by coping the $INTELFPGAOCLSDKROOT/Intel_FPGA_SS...
MEIYAN_L_Intel's avatar
MEIYAN_L_Intel
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6 years ago

Hi,

I am sorry for the late reply.

According to https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/opencl-sdk/aocl_getting_started.pdf in Chapter 3.3, you set the environment variables transiently.

Below is the script I had used to compile hello_world example with opencl offline compiler:

export AOCL_BOARD_PACKAGE_ROOT=<opencl install path>/board/a10_ref

cd $INTELFPGAOCLSDKROOT

source init_opencl.sh

cd <hello_world example path >/hello_world

aoc -march=emulator -v device/hello_world.cl -o bin/hello_world.aocx

cd hello_world && make

CL_CONFIG_CPU_EMULATE_DEVICES=1 bin/host -n=10000

Can you try the command?

Thanks

JGoer1's avatar
JGoer1
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6 years ago

Hi Mylee,

I tried your commands, and I get the following output

$ CL_CONFIG_CPU_EMULATE_DEVICES=1 bin/host -n=100000
Querying platform for info:
==========================
CL_PLATFORM_NAME                         = Intel(R) FPGA SDK for OpenCL(TM)
CL_PLATFORM_VENDOR                       = Intel(R) Corporation
CL_PLATFORM_VERSION                      = OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 19.3
 
ERROR: CL_DEVICE_NOT_FOUND
Location: ../common/src/AOCLUtils/opencl.cpp:356
Query for number of devices failed

When I try it with $ CL_CONTEXT_EMULATOR_DEVICE_INTELFPGA=1 bin/host -n=100000 I get the following output:

$ CL_CONTEXT_EMULATOR_DEVICE_INTELFPGA=1 bin/host -n=100000
Querying platform for info:
==========================
CL_PLATFORM_NAME                         = Intel(R) FPGA SDK for OpenCL(TM)
CL_PLATFORM_VENDOR                       = Intel(R) Corporation
CL_PLATFORM_VERSION                      = OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 19.3
 
Querying device for info:
========================
CL_DEVICE_NAME                           = EmulatorDevice : Emulated Device
CL_DEVICE_VENDOR                         = Intel(R) Corporation
CL_DEVICE_VENDOR_ID                      = 4466
CL_DEVICE_VERSION                        = OpenCL 1.0 Intel(R) FPGA SDK for OpenCL(TM), Version 19.3
CL_DRIVER_VERSION                        = 19.3
CL_DEVICE_ADDRESS_BITS                   = 64
CL_DEVICE_AVAILABLE                      = true
CL_DEVICE_ENDIAN_LITTLE                  = true
CL_DEVICE_GLOBAL_MEM_CACHE_SIZE          = 32768
CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE      = 0
CL_DEVICE_GLOBAL_MEM_SIZE                = 16722758656
CL_DEVICE_IMAGE_SUPPORT                  = false
CL_DEVICE_LOCAL_MEM_SIZE                 = 16384
CL_DEVICE_MAX_CLOCK_FREQUENCY            = 1000
CL_DEVICE_MAX_COMPUTE_UNITS              = 1
CL_DEVICE_MAX_CONSTANT_ARGS              = 8
CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE       = 4180689664
CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS       = 3
CL_DEVICE_MEM_BASE_ADDR_ALIGN            = 8192
CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE       = 1024
CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR    = 4
CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT   = 2
CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT     = 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG    = 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT   = 1
CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE  = 0
Command queue out of order?              = true
Command queue profiling enabled?         = true
Using AOCX: hello_world.aocx
Context callback: Malformed program binary: missing .acl.board section
Context callback: kernel argument info is not available
Context callback: Invalid binary
ERROR: CL_INVALID_BINARY
Location: ../common/src/AOCLUtils/opencl.cpp:392
Failed to create program with binary

Thanks again for all your help!