bugfix to make amd-smi usage backward compatible (#836)

* Update soc_base.py

Fixes https://github.com/ROCm/rocprofiler-compute/issues/835

Signed-off-by: fxmarty-amd <felmarty@amd.com>

* address comments

---------

Signed-off-by: fxmarty-amd <felmarty@amd.com>

src/rocprof_compute_soc/soc_base.py

@@ -170,7 +170,14 @@ class OmniSoC_Base:
         # Parse json from amd-smi static --clock
         amd_smi_mclk = run(["amd-smi", "static", "--clock", "--json"], exit_on_error=True)
         amd_smi_mclk = json.loads(amd_smi_mclk)
-        amd_smi_mclk = amd_smi_mclk["gpu_data"][0]["clock"]["mem"]["frequency_levels"]
+
+        if isinstance(amd_smi_mclk, dict):
+            # The output of `amd-smi static --clock --json` is a dict with amd-smi>=26.0.0.
+            amd_smi_mclk = amd_smi_mclk["gpu_data"][0]["clock"]["mem"]["frequency_levels"]
+        else:
+            # For backward compatibility: the output of `amd-smi static --clock --json` used to be a list for amd-smi<26.0.0.
+            amd_smi_mclk = amd_smi_mclk[0]["clock"]["mem"]["frequency_levels"]
+
         # Choose the highest level of memory clock frequency
         amd_smi_mclk = amd_smi_mclk[sorted(amd_smi_mclk.keys())[-1]]
         # 100 Mhz -> 100