readme and .cfg files added

hash/sp1/bench/README.md

@@ -0,0 +1,10 @@
+Benchmarking inside sp1 ZKVM
+--------------------------------
+
+- The `sp1/benches` contains the following hash `program`(the source code that will be proven inside the zkVM): sha256, keccak, blake2, blake3, and poseidon2 ober BN256.
+- `script` folder contains the benchmarking code that contains proof generation and verification code for each hash program.
+- The `build.sh` script builds the whole code.
+- `run.sh` and `run_tree.sh` runs the benchmark. (`run.sh` for sha256, keccak, blake2, blake3 and `run_tree.sh` for poseidon2 over BN256)
+- Benchmarks can be parameterized using environment variables. By convention, we start the names of these environment variables with the `ZKBENCH_` prefix.
+- By default the `run.sh` will run the sha256 benchmark over 1KB of data. other hashes can be run by settig the environment variables accordingly.
+- Additional files `bench.cfg` and `bench_tree.cfg` specifies the configurations and parameters.

hash/sp1/bench/bench.cfg

@@ -0,0 +1,11 @@
+name:   "Hashes benchmarking using sp1 prover"
+author: 
+timeout: 200
+params:
+  [ HASH_TYPE:     [ "sha256", "keccak", "blake2", "blake3"]
+  , INPUT_SIZE_BYTES: [ 256, 512, 1024, 2048 ]
+  ]
+tags: sp1, $HASH_TYPE
+
+comments:
+  The benchmarks includes for sha256, keccak, blake2, blake3 using sp1.

hash/sp1/bench/bench_tree.cfg

@@ -0,0 +1,10 @@
+name:   "Hashes benchmarking using sp1 prover"
+author: 
+timeout: 500
+params:
+  [ HASH_TYPE_TREE:     [ "poseidon2"]
+  , TREE_DEPTH: [ 2, 4, 8, 16 ]
+  ]
+tags: sp1, $HASH_TYPE_TREE
+comments:
+  The benchmarks includes for poseidon2(merkle hashing) over BN256.

hash/sp1/bench/run_tree.sh

@@ -13,4 +13,4 @@ echo "HASH            = $ZKBENCH_HASH_TYPE_TREE"
 echo "Tree Depth = $ZKBENCH_TREE_DEPTH"
 
 # Run the benchmarks
-./target/release/bench-script $ZKBENCH_HASH_TYPE_TREE $ZKBENCH_TREE_DEPTH
+RUST_LOG=info ./target/release/bench-script $ZKBENCH_HASH_TYPE_TREE $ZKBENCH_TREE_DEPTH