Can a group of PCs act like a local pool?

Question

I know what pools are for, they combine many nodes power to mine a block quicker but these are cloud pools.

Could a group of PCs or mining rigs which are at the same network act like a pool and combine their powers to mine?

Answer 1

but these are cloud pools.

Not always no. A pool doesn't need to run in the "cloud".

Could a group of PCs or mining rigs which are at the same network act like a pool and combine their powers to mine?

A group of PCs all solo mining to the same wallet address is almost exactly the same thing as that group of PCs mining to a pool running on the local network.

With tens, hundreds or thousands on PCs on a network, running a local network pool makes much more sense, as it:

• ensures there is no nonce overlap
• reduces traffic
• reduces load

A mining proxy (like XMRig Proxy), also accomplishes the same.