Hellow guys, I have some problem to use opencl. I am using AOCL and quartus 13.1 version. My probelm is when i command " aocl diagnostic" the error are occcur. the message is belowe that. aocl diagnostic: Running diagnosticrom /root/altera/13.1/hld/bord/plda/xpressgx5lp/linux64/bin running diagnotic for : acl0 FPGA is in user mode. Enablin bridges Using platform:Altera SDK for OpenCL Failed clGetDeviceIDs. Error code: -1 aocl diagnostic: failed. so I want to fix the problem and to use the board. what is cause and solution of this problem.

What is your board? Every board has a starting guide that details how you should set up the board for first usage. Apart from that, the version of Quartus/AOC you are using is ancient; at this point in time, depending on the BSP available to you by the board manufacturer, you should be either using 16.1.2 or 17.0.

My board is xpressgx5lp of PLDA. They are old board, right. Sadly, I don't have starting guide. I did it alone. Because the PLDA now change direction of their buisiness. So I am not supported by the board vendor.. But I have board BSP package. And README FILE in BSP specify the fact that this board are working with AOCL and Quatus 13.1. Do you recommad using the newest vesion of aocl and quartus? many thanks. --- Quote Start --- What is your board? Every board has a starting guide that details how you should set up the board for first usage. Apart from that, the version of Quartus/AOC you are using is ancient; at this point in time, depending on the BSP available to you by the board manufacturer, you should be either using 16.1.2 or 17.0. --- Quote End ---

Ah, well, if you are using an old BSP for an unsupported board, then using a new version of Quartus will just give you more trouble. Currently the diagnose script cannot find/see your board which means the board is not set up correctly. To get the board up and running, you need two things: 1. A pre-compiled FPGA binary that you should use to program the FPGA through JTAG to enable the PCI-E core. This allows the FPGA to be detected via PCI-E and used with OpenCL. 2. A PCI-E driver that would allow the host to communicate with the FPGA. You should get both of these with the BSP. The first one is straightforward, look for some "sof" file in the BSP, probably top.sof, to program the FPGA using quartus_pgm or Quartus GUI. For the second one, make sure the "AOCL_BOARD_PACKAGE_ROOT" environmental variable is pointing to your BSP, and then run aocl install; this should install the driver if everything is done correctly. Then do a full power cycle on the host machine (a reboot is not enough). You can check the starting guides from other boards to get an idea of the usual steps (Terasic's guides are accessible with a free account on their website); the steps are more or less the same for every board.

Dear HRZ Many Thanks for your help. I have done about the first one. Using JTAC, I tested PCIE "sof" file. It is successfull. In second one, I think that is not issue to me. because the "aocl install" command is working well. So I think the problem is driver is already installed but the CPU or mainboard are doesn't recognized the FPGA. In centos 6.4 linux, I insult "lspci" command the bellow are shown. ... 01:00.0 Unassigned class [ff00]: PLDA PCI Express Core Reference Design. ... And in isolation this problem, I have one question. Is it need OpenCL SDK License to work the "daignostic"?

The diagnose script is an OpenCL program, but the kernel is precompiled and I don't think you need a license for host compilation, which means you shouldn't need a license for it to work. Can you try lspci -v and see if there are any entries under the one you mentioned above like this? Kernel driver in use: aclpci Kernel modules: aclpci_drv

I have some error to use OpenCL.. please help me.

24 Replies

Altera_Forum
Honored Contributor
8 years ago
--- Quote Start ---
In the process of finding the data, I have some error about diagnostic. The FPGA test imege, i did, isn't for OpneCL imege. It means that it is just test imege to verify connecting FPGA with motherboard. So, I think, if I success to load the flash memorry, the "diagnostic command" doesn't working. That is my think. :)
--- Quote End ---

Really? :D
Of course that wouldn't work. You MUST have an OpenCL image to load on the FPGA so that the PCI-E core is configured and enabled. Look into your BSP folder, there should be some test/top sof file in that or there should at least be pre-compiled images for Altera's test examples. If no such thing exists, you can compile one of Altera's OpenCL examples yourself and try to program the FPGA via JTAG using the top.sof file (and not the aocx file) you will get in the compilation folder.
"failed clGetDeviceIDs" means the host cannot detect your board via PCI-E.
Altera_Forum
Honored Contributor
8 years ago
Long time no see dear HRZ.

Although I had many try to work FPGA, I failed all. Now.. I have to change the board. I compile the OpenCL file and c++ file. And I make the excution file. Then run it. But I have bellow error message.

FPGA is in user mode. Enabling bridges
Querying platform for info:
=================
CL_PLATFORM_NAME = Altera SDK for OpenCL
CL_PLATFORM_VENDOR = Altera Corporation
CL_PLATFORM_VERSION = OpenCL 1.0 Altera SDK for OpenCL, version 13.1

ERROR : CL_DEVICE_NOT_FOUND
Location: ../common/src/AOCLUTils/opencl.cpp:356
Query for number of devices failed

I think my computer doesn't recongnize the FPGA board via PCIE slot. All my try is failed because the "Device not found". I changed my mainboard. bot I failed too. Now I have no way to use this board. what is your recomendation? Is it best wqy to change the other board?
Altera_Forum
Honored Contributor
8 years ago
Check my previous reply. Unless you program the FPGA via JTAG using an OpenCL image, and then reboot your machine so that the board is detected via PCI-E, you will never be able to use this board with OpenCL. Changing your hardware will not help.
Altera_Forum
Honored Contributor
8 years ago
First. I don't have the test image for OpenCL and download the test image for OpenCL. Becuase the board vendor doesn't supply the OpenCL board.
Second. I don't program the flash in FPGA. Becuase that work need to vendor's porgram. previously mentioned, the board vendor doesn't supply the OpenCL board.
So I don't use the board for OpenCL. Thank you for everything you've done for me.

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I have some error to use OpenCL.. please help me.

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