Add restriction on the number of benchmarks running in parallel.

Try to fix ProgramNotActivated error.

benches/Cargo.toml

@@ -17,3 +17,4 @@ koba.workspace = true
 e2e.workspace = true
 serde = "1.0.203"
 keccak-const = "0.2.0"
+itertools = "0.13.0"

benches/src/main.rs

@@ -1,22 +1,31 @@
 use benches::{
-    access_control, erc1155, erc20, erc721, merkle_proofs, ownable,
+    access_control, erc1155, erc20, erc721, merkle_proofs, ownable, report,
     report::BenchmarkReport,
 };
 use futures::FutureExt;
+use itertools::Itertools;
 
 #[tokio::main]
 async fn main() -> eyre::Result<()> {
-    let report = futures::future::try_join_all([
+    let benchmarks = [
         access_control::bench().boxed(),
         erc20::bench().boxed(),
         erc721::bench().boxed(),
         merkle_proofs::bench().boxed(),
         ownable::bench().boxed(),
         erc1155::bench().boxed(),
-    ])
-    .await?
-    .into_iter()
-    .fold(BenchmarkReport::default(), BenchmarkReport::merge_with);
+    ];
+
+    // Run benchmarks max 3 at the same time.
+    // Otherwise, nitro test node can overload and revert transaction.
+    const MAX_PARALLEL: usize = 3;
+    let mut report = BenchmarkReport::default();
+    for chunk in &benchmarks.into_iter().chunks(MAX_PARALLEL) {
+        report = futures::future::try_join_all(chunk)
+            .await?
+            .into_iter()
+            .fold(report, BenchmarkReport::merge_with);
+    }
 
     println!();
     println!("{report}");