add gamma halving

opentensor · Dec 20, 2024 · 170a5aa · 170a5aa
1 parent e0cade8
commit 170a5aa
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/pallets/subtensor/src/coinbase/block_emission.rs b/pallets/subtensor/src/coinbase/block_emission.rs
@@ -31,7 +31,7 @@ impl<T: Config> Pallet<T> {
             return Ok(0);
         }
 
-        // Calculate half of the total supply (10.5 billion * 10^6)
+        // Calculate half of the total supply (10.5 million * 10^9 RAO) == 1/2 * 21 million TAO
         let half_total_supply =
             I96F32::from_num(2.0).saturating_mul(I96F32::from_num(10_500_000_000_000_000.0));
 

diff --git a/pallets/subtensor/src/coinbase/block_step.rs b/pallets/subtensor/src/coinbase/block_step.rs
@@ -258,8 +258,18 @@ impl<T: Config + pallet_drand::Config> Pallet<T> {
         let first_time: bool =
             !HalvingBlock::<T>::iter().any(|(_, emission)| emission == new_emission);
         if first_time {
+            Self::halve_gamma();
         }
     }
+
+    pub fn halve_gamma() {
+        for netuid in Self::get_all_subnet_netuids() {
+            if netuid == Self::get_root_netuid() {
+                continue; // Skip root netuid.
+            }
+            let gamma: u64 = Self::get_raw_global_weight(netuid);
+            let halved_gamma: u64 = gamma.saturating_div(2);
+            Self::set_global_weight(halved_gamma, netuid);
         }
     }
 }