No platform found in path about hlslib HOT 8 CLOSED

Hi there. Which FPGA do you want to build for?

from hlslib.

I'm running the script on the server, which has a U250 card, as well as other types of cards. I also tried to type "platforminfo -l" instruction, but the output shows as below:

{
"platforms": ""
}

It seems that you use the code below to search for the available FPGA, is there any way to fix the problem? Thank you!

"find_program(Vitis_PLATFORMINFO platforminfo PATHS ${VITIS_ROOT}/bin NO_DEFAULT_PATH)"

from hlslib.

It seems like this is not an hlslib issue. If platforminfo cannot find the platform then the tools also will not be able to. I recommend that you check if the U250 platform drivers have been installed, and then check where they are installed. Maybe it will help you find out why platforminfo does not detect them.

from hlslib.

Would you mind telling me a bit more about the platform driver? Is there any user guide about it? And if I want to run the code on a machine without FPGA connected, but platform drivers are installed, can I still synthesize the code and build the host code?

from hlslib.

They are here: https://www.xilinx.com/products/boards-and-kits/alveo/u250.html#gettingStarted
Yeah, you can still build everything on a machine without the FPGA, but you still need to install the platform from that page. The only thing you don't install is the bitstream onto the card itself.

from hlslib.

Thanks a lot. I downloaded U250 Development Target Platform and then it works well during "make hw" step, though the hardware synthesis, especially block-level synthesis for gemm_hls, takes a long time.

But I found it report an error when I change the platform to U50, the error was reported as follows, have you met a similar problem?

#make hw
.......
[ 50%] Linking MatrixMultiplication for hardware.
........

INFO: [SYSTEM_LINK 82-51] Create system connectivity graph
INFO: [SYSTEM_LINK 82-102] Applying explicit connections to the system connectivity graph: /home/xxx/code/gemm_hls/build/_x/link/sys_link/cfgraph/cfgen_cfgraph.xml
INFO: [SYSTEM_LINK 82-38] [03:44:33] cfgen started: /opt/tools/xilinx/Vitis/2020.2/bin/cfgen -sp MatrixMultiplicationKernel_1.m_axi_gmem0:DDR[1] -sp MatrixMultiplicationKernel_1.m_axi_gmem1:DDR[1] -sp MatrixMultiplicationKernel_1.m_axi_gmem2:DDR[1] -dmclkid 0 -r /home/xxx/code/gemm_hls/build/_x/link/sys_link/_sysl/.cdb/xd_ip_db.xml -o /home/xxx/code/gemm_hls/build/_x/link/sys_link/cfgraph/cfgen_cfgraph.xml
INFO: [CFGEN 83-0] Kernel Specs:
INFO: [CFGEN 83-0] kernel: MatrixMultiplicationKernel, num: 1 {MatrixMultiplicationKernel_1}
INFO: [CFGEN 83-0] Port Specs:
INFO: [CFGEN 83-0] kernel: MatrixMultiplicationKernel_1, k_port: m_axi_gmem0, sptag: DDR[1]
INFO: [CFGEN 83-0] kernel: MatrixMultiplicationKernel_1, k_port: m_axi_gmem1, sptag: DDR[1]
INFO: [CFGEN 83-0] kernel: MatrixMultiplicationKernel_1, k_port: m_axi_gmem2, sptag: DDR[1]
ERROR: [CFGEN 83-2287] --sp tag applied with an invalid sp tag: DDR[1]
ERROR: [CFGEN 83-2287] --sp tag applied with an invalid sp tag: DDR[1]
ERROR: [CFGEN 83-2287] --sp tag applied with an invalid sp tag: DDR[1]
ERROR: [CFGEN 83-2297] Please consult platforminfo <platform.xpfm path> for sptag information
ERROR: [CFGEN 83-2298] Exiting due to previous error
ERROR: [SYSTEM_LINK 82-36] [03:44:34] cfgen failed
........

from hlslib.

I think the U50 only has HBM, so you'd have to change the memory mapping to use this instead. I don't have a "nice" interface to configure this, unfortunately, so for now you'd have to manually change this in CMakeLists.txt. You can open an issue with a feature request :-)

from hlslib.

Hi,
Recently, I installed Xilinx RunTime and Deployment Target Platform of U250 by following step1 to step3 in the website https://www.xilinx.com/products/boards-and-kits/alveo/u250.html#gettingStarted . When I run

platforminfo -l

it shows an error

Error parsing platform file: /opt/xilinx/platforms/xilinx_u250_gen3x16_xdma_4_1_202210_1.xpfm
Line number:16. Mandatory element missing
ERROR: Caught an internal exception: failed to parse the XPFM file

I think it might be the reason that I failed to run the cmake command

-- Querying default clock for xilinx_u250_gen3x16_xdma_4_1_202210_1.
Exception: failed to parse the XPFM file
CMake Error at CMakeLists.txt:129 (string):
string begin index: -1 is out of range 0 - 174

-- Querying Vitis platform for MatrixMultiplication.
Exception: failed to parse the XPFM file
-- Configuring incomplete, errors occurred!

In fact, xilinx_u250_gen3x16_xdma_4_1_202210_1.xpfm is in path "/opt/xilinx/platforms/xilinx_u250_gen3x16_xdma_4_1_202210_1/xilinx_u250_gen3x16_xdma_4_1_202210_1.xpfm". However, Vitis could not find it even though I copied it to "/opt/xilinx/platforms" manually.

I am wondering if there are any necessary operations to make xpfm file visible to Vitis. And I use Vitis 2021.1 on Ubuntu20.04.

​

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