using 3,5,7cores

[stavros]

hi usualy people using 2,4,8,12,16.. cores
what if use 3 ,5,7 cores? will affect the perfomance?

[Werewolf]

I remember Houdart saying it was fine. I also typically use an even number of cores doubling from 2, but that's more out of habit than something rational.

[mwyoung]

hi usualy people using 2,4,8,12,16.. cores
what if use 3 ,5,7 cores? will affect the perfomance?

Many people use a odd number cores, or threads. For responsiveness, and it works fine.

[mwyoung]

hi usualy people using 2,4,8,12,16.. cores
what if use 3 ,5,7 cores? will affect the perfomance?

Many people use a odd number cores, or threads. For responsiveness, and it works fine.

[Dann Corbit]

hi usualy people using 2,4,8,12,16.. cores
what if use 3 ,5,7 cores? will affect the perfomance?

I do it all the time.
Very frequently, I will have a machine do chess analysis with (total possible threads -1).
So on my AMD 3970x, I will give 63 threads.

I like to have one thread free because some programs lock the CPU so tight you can no longer log in to the machine remotely if you use every thread.

[mwyoung]

hi usualy people using 2,4,8,12,16.. cores
what if use 3 ,5,7 cores? will affect the perfomance?

I do it all the time.
Very frequently, I will have a machine do chess analysis with (total possible threads -1).
So on my AMD 3970x, I will give 63 threads.

I like to have one thread free because some programs lock the CPU so tight you can no longer log in to the machine remotely if you use every thread.

Yes. And you could also run the chess engines at a lower priority. This way if not needed. All 64 threads are used for chess analysis, and they will give way when needed.