diff --git a/users/zeyer/slurm_tools/__init__.py b/users/zeyer/slurm_tools/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/users/zeyer/slurm_tools/report_gpus.py b/users/zeyer/slurm_tools/report_gpus.py
new file mode 100644
index 000000000..cef81ec09
--- /dev/null
+++ b/users/zeyer/slurm_tools/report_gpus.py
@@ -0,0 +1,142 @@
+"""
+Report on GPUs (free/used) in the Slurm cluster
+"""
+
+import sys
+import os
+import re
+from functools import reduce
+from subprocess import check_output
+from collections import defaultdict
+from typing import TypeVar, Dict
+
+
+_my_dir = os.path.dirname(__file__)
+_base_dir = reduce(lambda p, _: os.path.dirname(p), range(4), _my_dir)
+_sis_dir = os.path.dirname(_base_dir) + "/tools/sisyphus"
+
+T = TypeVar("T")
+
+
+def _setup():
+    # In case the user started this script directly.
+    if not globals().get("__package__"):
+        globals()["__package__"] = "i6_experiments.users.zeyer.sis_tools"
+        if _base_dir not in sys.path:
+            sys.path.append(_base_dir)
+        if _sis_dir not in sys.path:
+            sys.path.append(_sis_dir)
+
+
+_setup()
+
+
+def main():
+    nodes_info = parse_scontrol_show_node()
+
+    count_args = ["gres/gpu"]
+    # by (arg, partition)
+    total = defaultdict(int)
+    alloc = defaultdict(int)
+    down = defaultdict(int)
+    for _, node_info in nodes_info.items():
+        for partition in node_info["Partitions"].split(","):
+            state, *state_flags = node_info["State"].split("+")
+            cfg_tres = parse_tres(node_info["CfgTRES"])
+            alloc_tres = parse_tres(node_info.get("AllocTRES", ""))
+            for count_arg in count_args:
+                if count_arg not in cfg_tres:
+                    continue
+                node_total_count = cfg_tres[count_arg]
+                node_alloc_count = alloc_tres.get(count_arg, 0)
+                key = (count_arg, partition)
+                if state in {"ALLOCATED", "IDLE", "MIXED"}:
+                    total[key] += node_total_count
+                    alloc[key] += node_alloc_count
+                else:
+                    down[key] += node_total_count
+
+    for key in total:
+        total_ = total[key]
+        alloc_ = alloc[key]
+        down_ = down[key]
+        print(f"Count {key}: {alloc_}/{total_} used, {total_ - alloc_}/{total_} free, {down_} down")
+
+
+def parse_tres(tres_str: str) -> Dict[str, int]:
+    res = {}
+    if not tres_str:
+        return res
+    for part in tres_str.split(","):
+        key, value = part.split("=")
+        factor = 1
+        if value.endswith("M"):
+            value = value[:-1]
+            factor = 1024 * 1024
+        elif value.endswith("G"):
+            value = value[:-1]
+            factor = 1024 * 1024 * 1024
+        res[key] = (float(value) if "." in value else int(value)) * factor
+    return res
+
+
+def parse_scontrol_show_node() -> Dict[str, Dict[str, str]]:
+    nodes_res = {}
+    out_lines = check_output(["scontrol", "-o", "show", "node"]).decode("utf-8").splitlines()
+    # example out, with "-o" one line per node::
+    # NodeName=n23g0007 CoresPerSocket=48  CPUAlloc=0 CPUEfctv=96 CPUTot=96 ...
+    # ... CfgTRES=cpu=96,mem=499800M,billing=96,gres/gpu=4,gres/gpu:hopper=4 ...
+    # ... Reason=Not responding [slurmadm@2024-12-05T16:14:59] Comment=BadPerformance. Testing.
+    # Without "-o", full node example:
+    # NodeName=n23g0002 Arch=x86_64 CoresPerSocket=12
+    #    CPUAlloc=47 CPUEfctv=96 CPUTot=96 CPULoad=127.44
+    #    AvailableFeatures=sapphire,spr8468,hostok,hpcwork,Rocky8
+    #    ActiveFeatures=sapphire,spr8468,hostok,hpcwork,Rocky8
+    #    Gres=gpu:hopper:4(S:0-7)
+    #    NodeAddr=n23g0002 NodeHostName=n23g0002 Version=22.05.4
+    #    OS=Linux 4.18.0-553.27.1.el8_10.x86_64 #1 SMP Wed Nov 6 14:29:02 UTC 2024
+    #    RealMemory=499800 AllocMem=211744 FreeMem=468883 Sockets=8 Boards=1
+    #    State=MIXED ThreadsPerCore=1 TmpDisk=0 Weight=150933 Owner=N/A MCS_label=N/A
+    #    Partitions=c23g,c23g_low
+    #    BootTime=2024-12-08T16:28:22 SlurmdStartTime=2024-12-08T16:28:43
+    #    LastBusyTime=2024-12-08T21:07:28
+    #    CfgTRES=cpu=96,mem=499800M,billing=96,gres/gpu=4,gres/gpu:hopper=4
+    #    AllocTRES=cpu=47,mem=211744M,gres/gpu=4,gres/gpu:hopper=4
+    #    CapWatts=n/a
+    #    CurrentWatts=528 AveWatts=319
+    #    ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
+    # Another example of a node in bad state:
+    # NodeName=n23g0003 CoresPerSocket=48
+    #    CPUAlloc=0 CPUEfctv=96 CPUTot=96 CPULoad=N/A
+    #    AvailableFeatures=sapphire,spr8468,hostok,hpcwork,Rocky8
+    #    ActiveFeatures=sapphire,spr8468,hostok,hpcwork,Rocky8
+    #    Gres=gpu:hopper:4
+    #    NodeAddr=n23g0003 NodeHostName=n23g0003
+    #    RealMemory=499800 AllocMem=0 FreeMem=N/A Sockets=2 Boards=1
+    #    State=DOWN+DRAIN+NOT_RESPONDING ThreadsPerCore=1 TmpDisk=0 Weight=150933 Owner=N/A MCS_label=N/A
+    #    Partitions=c23g,c23g_low
+    #    BootTime=None SlurmdStartTime=None
+    #    LastBusyTime=2024-12-08T03:38:34
+    #    CfgTRES=cpu=96,mem=499800M,billing=96,gres/gpu=4,gres/gpu:hopper=4
+    #    AllocTRES=
+    #    CapWatts=n/a
+    #    CurrentWatts=0 AveWatts=0
+    #    ExtSensorsJoules=n/s ExtSensorsWatts=0 ExtSensorsTemp=n/s
+    #    Reason=gets too hot [mw445520@2024-12-03T17:06:40]
+
+    for line in out_lines:
+        node_res = {}
+        # Parse the whole line
+        for part in re.split(" +(?=\\S+=)", line):
+            m = re.match("^([A-Za-z_]+)=(.*)$", part)
+            assert m, f"Failed to match part: {part}"
+            key, value = m.groups()
+            node_res[key] = value
+        node_name = node_res["NodeName"]
+        assert node_name not in nodes_res, f"Node {node_name} appears twice? {nodes_res}"
+        nodes_res[node_name] = node_res
+    return nodes_res
+
+
+if __name__ == "__main__":
+    main()