diff --git a/.gitmodules b/.gitmodules
index c74fdc1..2d9be9d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "gosh"]
 	path = thesis/gosh
 	url = https://github.com/nfeske/gosh.git
+[submodule "benchmarks/json"]
+	path = benchmarks/json
+	url = https://github.com/nlohmann/json
diff --git a/benchmarks/error.hpp b/benchmarks/error.hpp
deleted file mode 100644
index 045b6e7..0000000
--- a/benchmarks/error.hpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#pragma once
-
-#include <iostream>
-
-#include <dml/dml.hpp>
-
-inline std::ostream& operator<<(std::ostream& strm, const dml::status_code code) {
-    switch(code) {
-        case dml::status_code::ok: strm << "[ok]"; break;
-        case dml::status_code::false_predicate: strm << "[false predicate]"; break;
-        case dml::status_code::partial_completion: strm << "[partial completion]"; break;
-        case dml::status_code::nullptr_error: strm << "[nullptr error]"; break;
-        case dml::status_code::bad_size: strm << "[bad size]"; break;
-        case dml::status_code::bad_length: strm << "[bad length]"; break;
-        case dml::status_code::inconsistent_size: strm << "[inconsistent size]"; break;
-        case dml::status_code::dualcast_bad_padding: strm << "[dualcast bad padding]"; break;
-        case dml::status_code::bad_alignment: strm << "[bad alignment]"; break;
-        case dml::status_code::buffers_overlapping: strm << "[buffers overlapping]"; break;
-        case dml::status_code::delta_delta_empty: strm << "[delta delta empty]"; break;
-        case dml::status_code::batch_overflow: strm << "[batch overflow]"; break;
-        case dml::status_code::execution_failed: strm << "[execution failed]"; break;
-        case dml::status_code::unsupported_operation: strm << "[unsupported operation]"; break;
-        case dml::status_code::queue_busy: strm << "[queue busy]"; break;
-        case dml::status_code::error: strm << "[unknown error]"; break;
-        case dml::status_code::config_error: strm << "[config error]"; break;
-        default: strm << "[unhandled error]"; break;
-    }
-    return strm;
-}
\ No newline at end of file
diff --git a/benchmarks/json b/benchmarks/json
new file mode 160000
index 0000000..360ce45
--- /dev/null
+++ b/benchmarks/json
@@ -0,0 +1 @@
+Subproject commit 360ce457f46f03111332f473fdbb3a353f16723c
diff --git a/benchmarks/logging-helper.hpp b/benchmarks/logging-helper.hpp
new file mode 100644
index 0000000..c98312d
--- /dev/null
+++ b/benchmarks/logging-helper.hpp
@@ -0,0 +1,70 @@
+#pragma once
+
+#include <iostream>
+
+#include "json/single_include/nlohmann/json.hpp"
+
+#include "execute-move.hpp"
+
+inline const std::string StatusCodeToString(const dml::status_code code) {
+    switch(code) {
+        case dml::status_code::ok: return "[ok]";
+        case dml::status_code::false_predicate: return "[false predicate]";
+        case dml::status_code::partial_completion: return "[partial completion]";
+        case dml::status_code::nullptr_error: return "[nullptr error]";
+        case dml::status_code::bad_size: return "[bad size]";
+        case dml::status_code::bad_length: return "[bad length]";
+        case dml::status_code::inconsistent_size: return "[inconsistent size]";
+        case dml::status_code::dualcast_bad_padding: return "[dualcast bad padding]";
+        case dml::status_code::bad_alignment: return "[bad alignment]";
+        case dml::status_code::buffers_overlapping: return "[buffers overlapping]";
+        case dml::status_code::delta_delta_empty: return "[delta delta empty]";
+        case dml::status_code::batch_overflow: return "[batch overflow]";
+        case dml::status_code::execution_failed: return "[execution failed]";
+        case dml::status_code::unsupported_operation: return "[unsupported operation]";
+        case dml::status_code::queue_busy: return "[queue busy]";
+        case dml::status_code::error: return "[unknown error]";
+        case dml::status_code::config_error: return "[config error]";
+        default: return "[unhandled error]";
+    }
+}
+
+inline void to_json(nlohmann::json& j, const ThreadArgs& a) {
+    j = nlohmann::json{
+        {"node", a.numa_node}, {"core", a.core}, {"size", a.size},
+        {"nnode_src", a.nnode_src}, {"nnode_dst", a.nnode_dst},
+        {"time_us", a.duration.count()},
+        {"status", StatusCodeToString(a.status)}
+    };
+}
+
+inline void from_json(const nlohmann::json& j, ThreadArgs& a) {
+    j.at("node").get_to(a.numa_node);
+    j.at("core").get_to(a.core);
+    j.at("size").get_to(a.size);
+    j.at("nnode_src").get_to(a.nnode_src);
+    j.at("nnode_dst").get_to(a.nnode_dst);
+}
+
+inline void WriteResultLog(const std::vector<ThreadArgs>& args, const std::string& path, std::ostream& os) {
+    nlohmann::json json;
+
+    json["count"] = args.size();
+    json["path"] = path;
+    json["list"] = args;
+
+    os << std::setw(4) << json;
+}
+
+inline void ReadWorkDescription(std::vector<ThreadArgs>& args, std::string& path, std::istream& is) {
+    nlohmann::json json;
+    is >> json;
+
+    const uint32_t count = json.at("count");
+    args.resize(count);
+    path = json.at("path");
+
+    for (uint32_t i = 0; i < count; i++) {
+        args[i] = json["list"][i].template get<ThreadArgs>();
+    }
+}
\ No newline at end of file
diff --git a/benchmarks/task-description.json b/benchmarks/task-description.json
new file mode 100644
index 0000000..ac6df86
--- /dev/null
+++ b/benchmarks/task-description.json
@@ -0,0 +1,13 @@
+{
+  "count": 1,
+  "path" : "sw",
+  "list": [
+    {
+      "core": 0,
+      "nnode_dst": 0,
+      "nnode_src": 0,
+      "node": 0,
+      "size": 4096
+    }
+  ]
+}
\ No newline at end of file