From 1414f5b14427117af6814246eac31ce6a483b1b8 Mon Sep 17 00:00:00 2001
From: Bob <robertbird@google.com>
Date: Thu, 16 Jul 2026 13:23:15 -0600
Subject: [PATCH 1/2] Add stress-ng app definition

---
 .../applications/stress-ng/application.py     | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 var/ramble/repos/builtin/applications/stress-ng/application.py

diff --git a/var/ramble/repos/builtin/applications/stress-ng/application.py b/var/ramble/repos/builtin/applications/stress-ng/application.py
new file mode 100644
index 000000000..df3aa4f89
--- /dev/null
+++ b/var/ramble/repos/builtin/applications/stress-ng/application.py
@@ -0,0 +1,119 @@
+# Copyright 2022-2026 The Ramble Authors
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+from ramble.appkit import *
+
+
+class StressNg(ExecutableApplication):
+    """Stress-ng is a system stress-testing utility"""
+
+    name = "stress-ng"
+
+    maintainers("robertbird")
+
+    tags("system-utility", "micro-benchmark")
+
+    version("0.12.06", "Version 0.12.06 of stress-ng", preferred=True)
+
+    with when("package_manager_family=spack"):
+        define_compiler("gcc", pkg_spec="gcc")
+
+        software_spec(
+            "stress-ng-{application::stress-ng::version}",
+            pkg_spec="stress-ng@{application::stress-ng::version}",
+            compiler="gcc",
+        )
+
+        required_package("stress-ng")
+
+    executable(
+        "run-stress",
+        "{stress_ng_bin} --{stressor} {workers} --timeout {timeout} {extra_args} --metrics-brief",
+        use_mpi=False,
+        output_capture=OUTPUT_CAPTURE.ALL,
+    )
+
+    workload("cpu", executable="run-stress")
+    workload("matrix", executable="run-stress")
+    workload("vecmath", executable="run-stress")
+
+    workload_variable(
+        "stress_ng_bin",
+        default="stress-ng",
+        description="Path to stress-ng binary",
+        workloads=["cpu", "matrix", "vecmath"],
+    )
+    workload_variable(
+        "stressor",
+        description="Stressor name",
+        workload_defaults={
+            "cpu": "cpu",
+            "matrix": "matrix",
+            "vecmath": "vecmath",
+        },
+    )
+    workload_variable(
+        "workers",
+        default="0",
+        description="Number of workers (0 for all)",
+        workloads=["cpu", "matrix", "vecmath"],
+    )
+    workload_variable(
+        "timeout",
+        default="60s",
+        description="Stressor timeout duration",
+        workloads=["cpu", "matrix", "vecmath"],
+    )
+    workload_variable(
+        "extra_args",
+        description="Extra arguments",
+        workload_defaults={
+            "cpu": "",
+            "matrix": "--matrix-method mult",
+            "vecmath": "",
+        },
+    )
+    workload_variable(
+        "cpu_list",
+        default="",
+        description="Taskset core list",
+        workloads=["cpu", "matrix", "vecmath"],
+    )
+    workload_variable(
+        "matrix_method",
+        default="all",
+        description="Matrix method",
+        workload="matrix",
+    )
+
+    success_criteria(
+        "successful_run",
+        mode="string",
+        match=r"(?s).*successful run completed",
+    )
+
+    metrics_regex = (
+        r"stress-ng: (info|metrc):\s+\[[0-9]+\]\s+(?P<stressor_name>cpu|matrix|cache|[\w\-]+)\s+"
+        + r"(?P<bogo_ops>[0-9]+)\s+(?P<real_time>[0-9\.]+)\s+(?P<usr_time>[0-9\.]+)\s+"
+        + r"(?P<sys_time>[0-9\.]+)\s+(?P<bogo_ops_per_s_real>[0-9\.]+)\s+"
+        + r"(?P<bogo_ops_per_s_usrsys>[0-9\.]+)"
+    )
+
+    figure_of_merit(
+        "Bogo Ops",
+        fom_regex=metrics_regex,
+        group_name="bogo_ops",
+        units="",
+    )
+
+    figure_of_merit(
+        "Bogo Ops/s (Real Time)",
+        fom_regex=metrics_regex,
+        group_name="bogo_ops_per_s_real",
+        units="ops/s",
+    )

From cff82a9074d29338bce8f4029ec193400d99e453 Mon Sep 17 00:00:00 2001
From: Bob <robertbird@google.com>
Date: Wed, 22 Jul 2026 12:34:43 -0600
Subject: [PATCH 2/2] Address reviewer feedback

---
 .../builtin/applications/stress-ng/application.py    | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/var/ramble/repos/builtin/applications/stress-ng/application.py b/var/ramble/repos/builtin/applications/stress-ng/application.py
index df3aa4f89..b53c560fe 100644
--- a/var/ramble/repos/builtin/applications/stress-ng/application.py
+++ b/var/ramble/repos/builtin/applications/stress-ng/application.py
@@ -74,16 +74,10 @@ class StressNg(ExecutableApplication):
         description="Extra arguments",
         workload_defaults={
             "cpu": "",
-            "matrix": "--matrix-method mult",
+            "matrix": "--matrix-method {matrix_method}",
             "vecmath": "",
         },
     )
-    workload_variable(
-        "cpu_list",
-        default="",
-        description="Taskset core list",
-        workloads=["cpu", "matrix", "vecmath"],
-    )
     workload_variable(
         "matrix_method",
         default="all",
@@ -108,7 +102,8 @@ class StressNg(ExecutableApplication):
         "Bogo Ops",
         fom_regex=metrics_regex,
         group_name="bogo_ops",
-        units="",
+        units="ops",
+        fom_type=FomType.MEASURE,
     )
 
     figure_of_merit(
@@ -116,4 +111,5 @@ class StressNg(ExecutableApplication):
         fom_regex=metrics_regex,
         group_name="bogo_ops_per_s_real",
         units="ops/s",
+        fom_type=FomType.THROUGHPUT,
     )