Switch to 30 seconds slot duration; UX improvements

* On the testnet site, the first N instead of the last N validators
  will be considered reserved for users

* The number of validators is consistently named `totalValidators`
  in all commands

* Proper keys are generated by default in validator_keygen

beacon_chain/beacon_node.nim

@@ -704,7 +704,7 @@ when isMainModule:
   case config.cmd
   of createTestnet:
     var deposits: seq[Deposit]
-    for i in config.firstValidator.int ..< config.numValidators.int:
+    for i in config.firstValidator.int ..< config.totalValidators.int:
       let depositFile = config.validatorsDir /
                         validatorFileBaseName(i) & ".deposit.json"
       deposits.add Json.loadFile(depositFile, Deposit)
@@ -728,8 +728,8 @@ when isMainModule:
         numShards: SHARD_COUNT,
         slotDuration: SECONDS_PER_SLOT,
         slotsPerEpoch: SLOTS_PER_EPOCH,
-        totalValidators: config.numValidators,
-        firstUserValidator: config.firstUserValidator)
+        totalValidators: config.totalValidators,
+        lastUserValidator: config.lastUserValidator)
 
     Json.saveFile(config.outputNetwork.string, testnetMetadata, pretty = true)
     echo "Wrote ", config.outputNetwork.string

beacon_chain/beacon_node_types.nim

@@ -250,8 +250,8 @@ type
     slotDuration*: uint64
     slotsPerEpoch*: uint64
     totalValidators*: uint64
-    firstUserValidator*: uint64
+    lastUserValidator*: uint64
 
 proc userValidatorsRange*(d: NetworkMetadata): HSlice[int, int] =
-  d.firstUserValidator.int ..< d.totalValidators.int
+  0 .. d.lastUserValidator.int
 

beacon_chain/conf.nim

@@ -85,15 +85,15 @@ type
         desc: "Directory containing validator descriptors named vXXXXXXX.deposit.json"
         shortform: "d".}: InputDir
 
-      numValidators* {.
+      totalValidators* {.
         desc: "The number of validators in the newly created chain".}: uint64
 
       firstValidator* {.
         desc: "Index of first validator to add to validator list"
         defaultValue: 0 .}: uint64
 
-      firstUserValidator* {.
-        desc: "The first validator index that will free for taking from a testnet participant"
+      lastUserValidator* {.
+        desc: "The last validator index that will free for taking from a testnet participant"
         defaultValue: 0 .}: uint64
 
       bootstrapAddress* {.

beacon_chain/validator_keygen.nim

@@ -12,11 +12,11 @@ proc writeFile(filename: string, value: auto) =
   Json.saveFile(filename, value, pretty = true)
   echo "Wrote ", filename
 
-cli do (validators: int = 125000,
+cli do (totalValidators: int = 125000,
         outputDir: string = "validators",
-        generateFakeKeys = true):
+        generateFakeKeys = false):
 
-  for i in 0 ..< validators:
+  for i in 0 ..< totalValidators:
     let
       v = validatorFileBaseName(i)
       depositFn = outputDir / v & ".deposit.json"

scripts/README.md

@@ -19,8 +19,8 @@ The `beacon_node` binary has a `createTestnet` command.
     createTestnet \
     --networkId=$NETWORK_ID \
     --validatorsDir=$NETWORK_DIR \
-    --numValidators=$VALIDATOR_COUNT \
-    --firstUserValidator=$FIRST_USER_VALIDATOR \
+    --totalValidators=$VALIDATOR_COUNT \
+    --lastUserValidator=$LAST_USER_VALIDATOR \
     --outputGenesis=$NETWORK_DIR/genesis.json \
     --outputNetwork=$NETWORK_DIR/$NETWORK_FLAVOUR-network.json \
     --bootstrapAddress=$PUBLIC_IP \

scripts/connect_to_testnet.sh

@@ -8,7 +8,7 @@ source "$NETWORK_NAME.env"
 
 cd ..
 
-NIM_FLAGS="-d:release --lineTrace:on -d:SHARD_COUNT=$SHARD_COUNT -d:SLOTS_PER_EPOCH=$SLOTS_PER_EPOCH"
+NIM_FLAGS="-d:release --lineTrace:on -d:SECONDS_PER_SLOT=$SECONDS_PER_SLOT -d:SHARD_COUNT=$SHARD_COUNT -d:SLOTS_PER_EPOCH=$SLOTS_PER_EPOCH"
 nim c $NIM_FLAGS beacon_chain/beacon_node
 
 if [ ! -d ~/.cache/nimbus/BeaconNode/$NETWORK_NAME/validators ]; then

scripts/reset_testnet.sh

@@ -18,14 +18,13 @@ PUBLIC_IP=$(curl -s ifconfig.me)
 NETWORK_DIR=$WWW_DIR/$NETWORK_NAME
 
 regenTestnetFiles() {
-  NIM_FLAGS="-d:release -d:SHARD_COUNT=$SHARD_COUNT -d:SLOTS_PER_EPOCH=$SLOTS_PER_EPOCH ${2:-}"
+  NIM_FLAGS="-d:release -d:SECONDS_PER_SLOT=$SECONDS_PER_SLOT -d:SHARD_COUNT=$SHARD_COUNT -d:SLOTS_PER_EPOCH=$SLOTS_PER_EPOCH ${2:-}"
   NETWORK_FLAVOUR=$1
 
   if [ ! -f $NETWORK_DIR/genesis.json ]; then
     rm -f $NETWORK_DIR/*
     nim c -r $NIM_FLAGS beacon_chain/validator_keygen \
-      --generateFakeKeys=no \
-      --validators=$VALIDATOR_COUNT \
+      --totalValidators=$VALIDATOR_COUNT \
       --outputDir="$NETWORK_DIR"
   fi
 
@@ -35,8 +34,8 @@ regenTestnetFiles() {
     createTestnet \
     --networkId=$NETWORK_ID \
     --validatorsDir=$NETWORK_DIR \
-    --numValidators=$VALIDATOR_COUNT \
-    --firstUserValidator=$FIRST_USER_VALIDATOR \
+    --totalValidators=$VALIDATOR_COUNT \
+    --lastUserValidator=$LAST_USER_VALIDATOR \
     --outputGenesis=$NETWORK_DIR/genesis.json \
     --outputNetwork=$NETWORK_DIR/$NETWORK_FLAVOUR-network.json \
     --bootstrapAddress=$PUBLIC_IP \

scripts/testnet0.env

@@ -1,7 +1,8 @@
 NETWORK_ID=1000000
 SHARD_COUNT=8
 SLOTS_PER_EPOCH=8
+SECONDS_PER_SLOT=30
 VALIDATOR_COUNT=400
-FIRST_USER_VALIDATOR=340
+LAST_USER_VALIDATOR=49
 BOOTSTRAP_PORT=9000
 

scripts/testnet1.env

@@ -1,7 +1,8 @@
 NETWORK_ID=2000000
 SHARD_COUNT=128
 SLOTS_PER_EPOCH=64
+SECONDS_PER_SLOT=30
 VALIDATOR_COUNT=20000
-FIRST_USER_VALIDATOR=19000
+LAST_USER_VALIDATOR=1999
 BOOTSTRAP_PORT=9100
 

tests/simulation/start.sh

@@ -33,7 +33,10 @@ if [ ! -f $LAST_VALIDATOR ]; then
     nim c -o:"$VALIDATOR_KEYGEN_BIN" $DEFS -d:release beacon_chain/validator_keygen
   fi
 
-  $VALIDATOR_KEYGEN_BIN --validators=$NUM_VALIDATORS --outputDir="$VALIDATORS_DIR"
+  $VALIDATOR_KEYGEN_BIN \
+    --totalValidators=$NUM_VALIDATORS \
+    --outputDir="$VALIDATORS_DIR" \
+    --generateFakeKeys=yes
 fi
 
 if [[ -z "$SKIP_BUILDS" ]]; then
@@ -41,10 +44,11 @@ if [[ -z "$SKIP_BUILDS" ]]; then
 fi
 
 if [ ! -f $SNAPSHOT_FILE ]; then
-  $BEACON_NODE_BIN --dataDir=$SIMULATION_DIR/node-0 createTestnet \
+  $BEACON_NODE_BIN createTestnet \
+    --dataDir=$SIMULATION_DIR/node-0 \
     --networkId=1000 \
     --validatorsDir=$VALIDATORS_DIR \
-    --numValidators=$NUM_VALIDATORS \
+    --totalValidators=$NUM_VALIDATORS \
     --outputGenesis=$SNAPSHOT_FILE \
     --outputNetwork=$NETWORK_METADATA_FILE \
     --bootstrapAddress=127.0.0.1 \