I'm looking for a professional answer
on the topic of winboard GUI & CPU resource allocation

***

I don't use little blitzer GUI but
I heard if we use little blitzer
then wen can do something like this

let's suppose
we have 2 cores for a CPU: core A and core B

then we can run 2 engine matches at the same time

1st match can only use 100% of core A

while 2nd match can only use 100% of core B

that's my understanding

***

I have 2 cores for a CPU

and I run 2 winboard GUIs simultaneously

but the thing is

after setting the number of cores to be used: 1
so one WB GUI will only use 1 core
that was what I thought

but when I run 2 winboard GUIs (WB) at the same time

it works differently from what little blitzer does

***

when running 2 WB GUIs

1st WB will use 50% of core A
and 50% of core B

while 2nd WB will use 50% or core A
and 50% of core B

*

this is picky, weird and fickle
whimsical, capricious and even fastidious

***

the following is the question:

when using 2 WB GUIs simultaneously
I think the ratio can be changed a little

so sometimes

1st WB will use 40% of core A
and 40% of core B

while 2nd WB will use 60% or core A
and 60% of core B

or sometimes

1st WB will use 60% of core A
and 60% of core B

while 2nd WB will use 40% or core A
and 40% of core B

is it right?