diff --git a/tests/dagger/testleopard.nim b/tests/dagger/testleopard.nim
index 7314add9..522a014b 100644
--- a/tests/dagger/testleopard.nim
+++ b/tests/dagger/testleopard.nim
@@ -4,6 +4,7 @@ import std/sequtils
 import std/strformat
 
 import pkg/dagger/leopard
+import pkg/stew/byteutils
 
 type
   TestParameters = object
@@ -13,6 +14,8 @@ type
     loss_count    : cuint
     seed          : cuint
 
+  Vec = seq[pointer]
+
 proc init(
     T: type TestParameters,
     original_count: cuint = 100,
@@ -26,10 +29,66 @@ proc init(
     loss_count    : loss_count,
     seed          : seed)
 
+proc new(T: type Vec, input: seq[seq[byte]]): T =
+  input.mapIt(cast[pointer](unsafeAddr it[0]))
+
 proc benchmark(params: TestParameters) =
   var
-    original_data = newSeqWith(params.original_count.int,
-      newSeq[byte](params.buffer_bytes))
+    # original_data = newSeqWith(params.original_count.int,
+    #   newSeq[byte](params.buffer_bytes))
+
+    # original_data_0 = newSeqWith(params.original_count.int, hello.toBytes)
+    # original_data = Vec.new(original_data_0)
+
+    hello01 = "hello world01                                                   "
+    hello02 = "hello world02                                                   "
+    hello03 = "hello world03                                                   "
+    hello04 = "hello world04                                                   "
+    hello05 = "hello world05                                                   "
+    hello06 = "hello world06                                                   "
+    hello07 = "hello world07                                                   "
+    hello08 = "hello world08                                                   "
+    hello09 = "hello world09                                                   "
+    hello10 = "hello world10                                                   "
+    hello11 = "hello world11                                                   "
+    hello12 = "hello world12                                                   "
+    hello13 = "hello world13                                                   "
+    hello14 = "hello world14                                                   "
+    hello15 = "hello world15                                                   "
+    hello16 = "hello world16                                                   "
+    hello17 = "hello world17                                                   "
+    hello18 = "hello world18                                                   "
+    hello19 = "hello world19                                                   "
+    hello20 = "hello world20                                                   "
+
+    original_data_0 = @[
+      hello01.toBytes,
+      hello02.toBytes,
+      hello03.toBytes,
+      hello04.toBytes,
+      hello05.toBytes,
+      hello06.toBytes,
+      hello07.toBytes,
+      hello08.toBytes,
+      hello09.toBytes,
+      hello10.toBytes,
+      hello11.toBytes,
+      hello12.toBytes,
+      hello13.toBytes,
+      hello14.toBytes,
+      hello15.toBytes,
+      hello16.toBytes,
+      hello17.toBytes,
+      hello18.toBytes,
+      hello19.toBytes,
+      hello20.toBytes
+    ]
+
+    original_data = Vec.new(original_data_0)
+
+  # debugEcho $original_data_0.mapIt(repr it)
+  # debugEcho $original_data.mapIt(repr cast[seq[byte]](cast[pointer](cast[int](it) - 16)))
+  debugEcho $original_data.mapIt(cast[int](it))
 
   let
     encode_work_count = leo_encode_work_count(params.original_count,
@@ -46,11 +105,16 @@ proc benchmark(params: TestParameters) =
   debugEcho "total_bytes: " & $total_bytes
 
   var
-    encode_work_data = newSeqWith(encode_work_count.int,
+    encode_work_data_0 = newSeqWith(encode_work_count.int,
       newSeq[byte](params.buffer_bytes))
-    decode_work_data = newSeqWith(decode_work_count.int,
+
+    encode_work_data = Vec.new(encode_work_data_0)
+
+    decode_work_data_0 = newSeqWith(decode_work_count.int,
       newSeq[byte](params.buffer_bytes))
 
+    decode_work_data = Vec.new(decode_work_data_0)
+
   let
     encodeResult = leo_encode(
       params.buffer_bytes,
@@ -63,6 +127,20 @@ proc benchmark(params: TestParameters) =
 
   debugEcho "encodeResult: " & $leo_result_string(encodeResult)
 
+  original_data[0]  = nil
+  original_data[17] = nil
+
+  encode_work_data[0] = nil
+  encode_work_data[1] = nil
+  # encode_work_data[2] = nil
+  encode_work_data[3] = nil
+  encode_work_data[4] = nil
+  encode_work_data[5] = nil
+  encode_work_data[6] = nil
+  encode_work_data[7] = nil
+  encode_work_data[8] = nil
+  # encode_work_data[9] = nil
+
   let
     decodeResult = leo_decode(
       params.buffer_bytes,
@@ -76,10 +154,15 @@ proc benchmark(params: TestParameters) =
 
   debugEcho "decodeResult: " & $leo_result_string(decodeResult)
 
+  debugEcho $original_data.mapIt((if it.isNil: @[] else: cast[seq[byte]](cast[pointer](cast[int](it) - 16))).len)
+  debugEcho $encode_work_data.mapIt((if it.isNil: @[] else: cast[seq[byte]](cast[pointer](cast[int](it) - 16))).len)
+  debugEcho $decode_work_data.mapIt(cast[seq[byte]](cast[pointer](cast[int](it) - 16)).len)
+  # debugEcho $decode_work_data.mapIt(cast[seq[byte]](cast[pointer](cast[int](it) - 16)))
+
 proc main() =
   if leo_init() != 0: raise (ref Defect)(msg: "Leopard failed to initialize")
 
-  var params = TestParameters.init
+  var params = TestParameters.init(buffer_bytes = 64, original_count = 20)
 
   debugEcho fmt(
     "Parameters: "                              &