[SWDEV-560702] Per process MEM usages does not add up to per GPU MEM usage. (#2888)

* Update pyhton docs for process memory usage
* Added comment for processes total memory usage

---------

Signed-off-by: yalmusaf <Yazen.ALMusaffar@amd.com>

projects/amdsmi/docs/reference/amdsmi-py-api.md

@@ -1426,7 +1426,7 @@ Field | Description
 ---|---
 `name` | Name of process. If user does not have permission this will be "N/A"
 `pid` | Process ID
-`mem` | Total memory usage by GPU during process in Bytes
+`mem` | Total memory usage by GPU during process in Bytes (sum of the process memory is not expected to be the total memory usage.)
 `engine_usage` | <table><thead><tr> <th> Subfield </th> <th> Description</th> </tr></thead><tbody><tr><td>`gfx`</td><td>GFX engine usage in ns</td></tr><tr><td>`enc`</td><td>Encode engine usage in ns</td></tr></tbody></table>
 `memory_usage` | <table><thead><tr> <th> Subfield </th> <th> Description</th> </tr></thead><tbody><tr><td>`gtt_mem`</td><td>GTT memory usage in Bytes</td></tr><tr><td>`cpu_mem`</td><td>CPU memory usage in Bytes</td></tr><tr><td>`vram_mem`</td><td>Process VRAM memory usage in Bytes</td></tr> </tbody></table>
 `cu_occupancy` | Number of Compute Units utilized
@@ -4224,6 +4224,8 @@ Field | Description
 `cu_occupancy` | Compute Unit usage in percents
 `evicted_time` | Time that queues are evicted on a GPU in milliseconds
 
+note: Sum of the process memory is not expected to be the total memory usage.
+
 Exceptions that can be thrown by `amdsmi_get_gpu_compute_process_info` function:
 
 * `AmdSmiLibraryException`

projects/amdsmi/include/amd_smi/amdsmi.h

@@ -2165,6 +2165,7 @@ typedef struct {
 
 /**
  * @brief This structure contains information specific to a process.
+ * Sum of the process memory is not expected to be the total memory usage.
  *
  * @cond @tag{gpu_bm_linux} @endcond
  */
@@ -6791,7 +6792,7 @@ amdsmi_get_violation_status(amdsmi_processor_handle processor_handle,
 /**
  *  @brief Returns the list of process information running on a given GPU.
  *  If pdh.dll is not present on the system, this API returns
- *  AMDSMI_STATUS_NOT_SUPPORTED.
+ *  AMDSMI_STATUS_NOT_SUPPORTED. Sum of the process memory is not expected to be the total memory usage.
  *
  *  @ingroup tagProcessInfo
  *