diff --git a/pkgs/development/python-modules/calmsize/default.nix b/pkgs/development/python-modules/calmsize/default.nix
new file mode 100644
index 000000000000..10a55e2e2ff1
--- /dev/null
+++ b/pkgs/development/python-modules/calmsize/default.nix
@@ -0,0 +1,34 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pytestCheckHook,
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "calmsize";
+  version = "0.1.3";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "Stonesjtu";
+    repo = "calmsize";
+    tag = version;
+    hash = "sha256-D4UMzgYq++w6+Od0t9mDP4S+3Tc/ME5++NOlozXXALQ=";
+  };
+
+  build-system = [ setuptools ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "calmsize" ];
+
+  meta = {
+    description = "Take a number of bytes and return a human-readable string";
+    homepage = "https://github.com/Stonesjtu/calmsize";
+    changelog = "https://github.com/Stonesjtu/calmsize/blob/${version}/CHANGES.md";
+    license = lib.licenses.zpl21;
+    maintainers = with lib.maintainers; [ jherland ];
+  };
+}
diff --git a/pkgs/development/python-modules/pytorch-memlab/default.nix b/pkgs/development/python-modules/pytorch-memlab/default.nix
new file mode 100644
index 000000000000..c4a7fcf7a830
--- /dev/null
+++ b/pkgs/development/python-modules/pytorch-memlab/default.nix
@@ -0,0 +1,49 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  calmsize,
+  pandas,
+  torch,
+  pytestCheckHook,
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "pytorch-memlab";
+  version = "0.3.0";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "Stonesjtu";
+    repo = "pytorch_memlab";
+    tag = version;
+    hash = "sha256-wNgbipvi3vYr9Ka9hA7I+C4y8Nf6AiZXUoXX+qKtZ+I=";
+  };
+
+  build-system = [ setuptools ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  dependencies = [
+    calmsize
+    pandas
+    torch
+  ];
+
+  pythonImportsCheck = [ "pytorch_memlab" ];
+
+  # These tests require CUDA
+  disabledTestPaths = [
+    "test/test_courtesy.py"
+    "test/test_line_profiler.py"
+  ];
+
+  meta = {
+    description = "Simple and accurate CUDA memory management laboratory for pytorch";
+    homepage = "https://github.com/Stonesjtu/pytorch_memlab";
+    changelog = "https://github.com/Stonesjtu/pytorch_memlab/releases/tag/${version}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ jherland ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 39db370c8547..8afa1c62b30f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2235,6 +2235,8 @@ self: super: with self; {
 
   calmjs-types = callPackage ../development/python-modules/calmjs-types { };
 
+  calmsize = callPackage ../development/python-modules/calmsize { };
+
   calver = callPackage ../development/python-modules/calver { };
 
   calysto = callPackage ../development/python-modules/calysto { };
@@ -14802,6 +14804,8 @@ self: super: with self; {
 
   pytorch-lightning = callPackage ../development/python-modules/pytorch-lightning { };
 
+  pytorch-memlab = callPackage ../development/python-modules/pytorch-memlab { };
+
   pytorch-metric-learning = callPackage ../development/python-modules/pytorch-metric-learning { };
 
   pytorch-msssim = callPackage ../development/python-modules/pytorch-msssim { };