aocl diagnose may fail to find Intel® Arria® 10 device on Ubuntu 16.04 (kernel 4.14 or newer) even though aocl install step completes successfully (as mentioned in AN 807 for Intel® Arria® 10 GX FPGA Development Kit) beacuse of the altera_cvp module that is included in newer Ubuntu kernels.
To check if altera_cvp module is causing aocl diagnose failure in your system, check the "Kernel driver in use" field for Altera Corporation Device listed in PCIe device information:
$ lspci -v
Look for Processing accelerators: Altera Corporation Device
Processing accelerators: Altera Corporation Device 2494 (rev 01) (prog-if 01)
Subsystem: Altera Corporation Device a151
Physical Slot: 4
Flags: bus master, fast devsel, latency 0, IRQ 10
Memory at f3140000 (64-bit, prefetchable) [size=512]
Memory at f3100000 (64-bit, prefetchable) [size=256K]
Capabilities: <access denied>
Kernel driver in use: altera-cvp
Kernel modules: altera_cvp, aclpci_a10_ref_drv
To prevent the altera_cvp module from being loaded for your Intel® Arria® 10 device, copy the blacklist file attached below to /etc/modprobe.d directory and restart the computer. Administrative privileges are required to complete this fix.
> Download blacklist-altera_cvp.conf here
$ sudo cp blacklist-altera_cvp.conf /etc/modprobe.d/
After reboot, lspci -v should NOT show altera_cvp in the "Kernel driver in use" field for Altera Corporation Device. You should see the Intel® Arria® 10 device driver (as shown for Intel® Arria® 10 GX FPGA Development Kit in the example below)
Processing accelerators: Altera Corporation Device 2494 (rev 01) (prog-if 01)
Subsystem: Altera Corporation Device a151
Physical Slot: 4
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f3140000 (64-bit, prefetchable) [size=512]
Memory at f3100000 (64-bit, prefetchable) [size=256K]
Capabilities: <access denied>
Kernel driver in use: aclpci_a10_ref
Kernel modules: altera_cvp, aclpci_a10_ref_drv
This issue will be fixed in a future release of Intel® FPGA SDK for OpenCL™.