Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Intel HLS Compiler (aka i++) Error:No definition found for speed grade '-7' Cyclone10

Hi guys, I've installed Intel HLS Compiler (aka i++) together with Intel® Quartus® Prime Pro Edition 17.1 to try it out. After setup, I can run the test in "HLS Getting Started Guide" document successfully, which proves the i++ compiler works.

But, when I switched to my own C source file, i++ threw an Error as follows:

$ i++ mips.c -march=10CX220YU484I6G -o test-fpga

error: no definition found for speed grade '-7' in family 'cyclone 10 gx'.hls verilog code generation, llc failed.

I have picked up the device 10CX220YU484I6G because my Quartus license only support Cyclone 10 family and I need a big device from this family.

Is this error caused by that i++ cannot support a specific speed grade in this family?

If so, which devices in this family are supported by i++? Or, where can I find the document that lists the devices supported by i++ (I didn't find this info from the Intel HLS documents)?

PS: my OS info,

OS: Ubuntu 14.04.3 LTS

gcc/g++ versions: both 4.4.7

Thanks in advance for any possible suggestions and help:)

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    OK, after checking the info from i++ --help, I found I can use FPGA family instead of the part code. So I changed my command into:

    $ i++ mips.c -march="Cyclone 10 GX" -o test-fpga

    and it works.

    (Be careful, the double quotes for the family name are necessary, otherwise it can't be recognized.)