Build Blocks in Parallel Permanently (#13008)

config/features/config.go

@@ -69,8 +69,7 @@ type Flags struct {
 
 	PrepareAllPayloads bool // PrepareAllPayloads informs the engine to prepare a block on every slot.
 
-	BuildBlockParallel bool // BuildBlockParallel builds beacon block for proposer in parallel.
-	AggregateParallel  bool // AggregateParallel aggregates attestations in parallel.
+	AggregateParallel bool // AggregateParallel aggregates attestations in parallel.
 
 	// KeystoreImportDebounceInterval specifies the time duration the validator waits to reload new keys if they have
 	// changed on disk. This feature is for advanced use cases only.
@@ -237,11 +236,6 @@ func ConfigureBeaconChain(ctx *cli.Context) error {
 		logEnabled(prepareAllPayloads)
 		cfg.PrepareAllPayloads = true
 	}
-	cfg.BuildBlockParallel = true
-	if ctx.IsSet(disableBuildBlockParallel.Name) {
-		logEnabled(disableBuildBlockParallel)
-		cfg.BuildBlockParallel = false
-	}
 	cfg.AggregateParallel = true
 	if ctx.IsSet(disableAggregateParallel.Name) {
 		logEnabled(disableAggregateParallel)

config/features/deprecated_flags.go

@@ -48,6 +48,11 @@ var (
 		Usage:  deprecatedUsage,
 		Hidden: true,
 	}
+	deprecatedDisableBuildBlockParallel = &cli.BoolFlag{
+		Name:   "disable-build-block-parallel",
+		Usage:  deprecatedUsage,
+		Hidden: true,
+	}
 )
 
 // Deprecated flags for both the beacon node and validator client.
@@ -60,6 +65,7 @@ var deprecatedFlags = []cli.Flag{
 	deprecatedEnableRegistrationCache,
 	deprecatedAggregateParallel,
 	deprecatedEnableOptionalEngineMethods,
+	deprecatedDisableBuildBlockParallel,
 }
 
 // deprecatedBeaconFlags contains flags that are still used by other components

config/features/flags.go

@@ -140,10 +140,6 @@ var (
 		Name:  "prepare-all-payloads",
 		Usage: "Informs the engine to prepare all local payloads. Useful for relayers and builders",
 	}
-	disableBuildBlockParallel = &cli.BoolFlag{
-		Name:  "disable-build-block-parallel",
-		Usage: "Disables building a beacon block in parallel for consensus and execution",
-	}
 	enableEIP4881 = &cli.BoolFlag{
 		Name:  "enable-eip-4881",
 		Usage: "Enables the deposit tree specified in EIP4881",
@@ -211,7 +207,6 @@ var BeaconChainFlags = append(deprecatedBeaconFlags, append(deprecatedFlags, []c
 	enableVerboseSigVerification,
 	disableOptionalEngineMethods,
 	prepareAllPayloads,
-	disableBuildBlockParallel,
 	aggregateFirstInterval,
 	aggregateSecondInterval,
 	aggregateThirdInterval,