// multi_coordinate.gk — Multiple input coordinates.
//
// The coordinate tuple is not limited to a single "cycle" value.
// The engine can provide multiple named coordinates — for example,
// a cycle counter and a thread identifier. This lets the GK produce
// values that vary across both dimensions.
//
// Use case: each thread generates its own partition of the keyspace.
input (cycle: u64, thread: u64)
// Interleave cycle and thread to produce a globally unique seed.
// Without this, thread 0 at cycle 100 and thread 1 at cycle 100
// would produce the same hash. Interleaving makes them distinct.
combined := interleave(cycle, thread)
row_h := hash(combined)
// Partition key: derived from thread alone, so each thread writes
// to its own partition. This models a common database pattern where
// writers are partitioned to avoid contention.
partition := mod(hash(thread), 256)
// Row key: unique within the partition, derived from the combined seed.
row_key := mod(row_h, 1000000)
// Value: a second hash axis for the payload.
value_h := hash(row_h)
value := mod(value_h, 1000)