!1307 profiler: added RESTful API for cluster peak memory

From: @zhangyunshu
Reviewed-by: @yelihua,@ouwenchang
Signed-off-by: @yanghaitao1

mindinsight/backend/profiler/profile_api.py

@@ -674,6 +674,34 @@ def get_cluster_step_trace_info():
     return jsonify(step_trace_info)
 
 
+@BLUEPRINT.route("/profile/cluster-peak-memory", methods=["GET"])
+def get_cluster_peak_memory():
+    """
+    Get cluster peak memory.
+
+    Returns:
+        str, the cluster peak memory.
+
+    Raises:
+        ParamValueError: If the cluster profiler dir is invalid.
+
+    Examples:
+        >>>GET http://xxx/v1/mindinsight/profile/cluster-peak-memory
+    """
+    train_id = get_train_id(request)
+    if not train_id:
+        raise ParamValueError('No train id.')
+    cluster_profiler_dir = os.path.join(settings.SUMMARY_BASE_DIR, train_id)
+    cluster_profiler_dir = validate_and_normalize_path(cluster_profiler_dir, 'cluster_profiler')
+    check_train_job_and_profiler_dir(cluster_profiler_dir)
+
+    analyser = AnalyserFactory.instance().get_analyser(
+        'cluster_memory', cluster_profiler_dir
+    )
+    peak_mem = analyser.get_peak_memory()
+    return jsonify(peak_mem)
+
+
 def init_module(app):
     """
     Init module entry.

mindinsight/profiler/analyser/cluster_analyser.py

@@ -18,7 +18,7 @@ import os
 
 from mindinsight.profiler.analyser.base_analyser import BaseAnalyser
 from mindinsight.profiler.common.exceptions.exceptions import ProfilerFileNotFoundException, \
-    ProfilerDirNotFoundException
+    ProfilerDirNotFoundException, ProfilerIOException
 from mindinsight.profiler.common.log import logger as log
 from mindinsight.profiler.common.validator.validate_path import validate_and_normalize_path
 
@@ -251,3 +251,57 @@ class ClusterStepTraceAnalyser(ClusterAnalyser):
             'step_trace': result,
             'size': self._cluster_step_trace_info_size
         }
+
+
+class ClusterMemoryAnalyser(ClusterAnalyser):
+    """The analyser for analyzing the cluster memory usage."""
+    _summary_filename = 'memory_usage_summary_{}.json'
+
+    def __init__(self, cluster_profiler_dir, device_id='0'):
+        super().__init__(cluster_profiler_dir, device_id)
+        self._cluster_dir = os.path.join(cluster_profiler_dir, 'cluster_profiler')
+
+    def get_peak_memory(self):
+        """Get peak memory for each device."""
+        peak_mem_list = []
+
+        for host_map_ip, device_id, rank_id in self._host_device_rank_relation:
+            host_dir = os.path.join(self._cluster_dir, host_map_ip, 'profiler')
+            validate_and_normalize_path(host_dir, raise_key='Invalid host directory {}.'.format(host_map_ip))
+            file_path = self._get_memory_file_for_each_device(host_dir, device_id)
+            file_content = self._get_file_content(file_path)
+            capacity = file_content.get('capacity')
+            peak_mem = file_content.get('peak_mem')
+
+            mem_dict = {
+                'host_ip': host_map_ip,
+                'device_id': device_id,
+                'rank_id': rank_id,
+                'capacity': capacity,
+                'peak_mem': peak_mem
+            }
+            peak_mem_list.append(mem_dict)
+
+        return peak_mem_list
+
+    def _get_memory_file_for_each_device(self, path, device_id):
+        """Get memory file for each device."""
+        filename = self._summary_filename.format(device_id)
+        file_path = os.path.join(path, filename)
+        validate_and_normalize_path(
+            file_path, raise_key='Invalid memory usage file path.'
+        )
+
+        return file_path
+
+    @staticmethod
+    def _get_file_content(file_path):
+        """Get file content."""
+        try:
+            with open(file_path, 'r') as f_obj:
+                file_content = json.load(f_obj)
+        except (IOError, OSError, json.JSONDecodeError) as err:
+            log.error('Error occurred when read memory file: %s', err)
+            raise ProfilerIOException()
+
+        return file_content

mindinsight/profiler/analyser/memory_usage_analyser.py

@@ -126,7 +126,7 @@ class MemoryUsageAnalyser(BaseAnalyser):
                 file_content = json.load(f_obj)
         except (IOError, OSError, json.JSONDecodeError) as err:
             logger.error('Error occurred when read memory file: %s', err)
-            raise ProfilerIOException
+            raise ProfilerIOException()
 
         return file_content
 

mindinsight/profiler/analyser/timeline_analyser.py

@@ -74,7 +74,7 @@ class TimelineAnalyser(BaseAnalyser):
                     timeline = list(filter(lambda x: x, timeline))
             except (IOError, OSError, json.JSONDecodeError) as err:
                 logger.error('Error occurred when read timeline display file: %s', err)
-                raise ProfilerIOException
+                raise ProfilerIOException()
         else:
             logger.info('No timeline file. Please check the output path.')
 
@@ -106,7 +106,7 @@ class TimelineAnalyser(BaseAnalyser):
                     timeline_summary = json.load(f_obj)
             except (IOError, OSError, json.JSONDecodeError) as err:
                 logger.error('Error occurred when read timeline summary file: %s', err)
-                raise ProfilerIOException
+                raise ProfilerIOException()
         else:
             logger.info('No timeline summary file. Please check the output path.')