Vivado only presents 1 cpu for synthesis jobs

[toxup_1]

Hi,

I'm running Vivado on Ubuntu and only one cpu is available for synthesis osv:

How can I troubleshoot this issue? 

get_param general.maxthreads
8

[graces]

The number of jobs specifies how many runs to be launched in parallel. You should be able to find more available values in drop-down menu.

The parameter specifies the maximum number of simultaneous threads to speed up processes.

[hemangd]

Hi @toxup_1 , 

Have a look into this AR to understand the difference between number of jobs and multithreading of CPU cores. https://www.xilinx.com/support/answers/60655.html

You will see how many CPU cores have been enabled for synthesis in synthesis log (runme.log). 

If you have set maxthreads 8 then you will in the log as info message like - multithreading enabled for synth_design using a maximum of 8 CPUs. 

[toxup_1]

That's my point. There are no other values available.

[viviany]

@toxup_1 Which Vivado version are you using?

What does it say if you run "launch_runs synth_1 -jobs 4" in the tcl console?

-vivian

[toxup_1 · Accepted solution]

I honestly gave up and tossed my pc away. Started off with a new pc and a new installation of Ubuntu and Vivado. No more issues.