Hmm, a 4-core cluster? Easiest would be to wire up two chips with bidirectional links and use a fault handler to transfer small blocks of memory across. You're

Hmm, a 4-core cluster? Easiest would be to wire up two chips with bidirectional links and use a fault handler to transfer small blocks of memory across. You're reimplementing a poor man's MESIF https://stackoverflow.com/questions/31876808 https://stackoverflow.com/questions/31876808.