[Gemini] hotfix the unittest bugs (#2125)

colossalai/gemini/memory_tracer/param_runtime_order.py

@@ -36,7 +36,7 @@ class OrderedParamGenerator(ParamGenerator):
         del visited_set
 
     def is_empty(self):
-        return len(self.param_visited_order) > 0
+        return len(self.param_visited_order) == 0
 
     def clear(self):
         self.param_visited_order = []

tests/test_gemini/update/test_gemini_use_rmt.py

@@ -45,11 +45,15 @@ def run_gemini_use_rmt(placement_policy, keep_gather, model_name: str, use_grad_
             run_fwd_bwd(runtime_mem_tracer, input_ids, label, criterion, runtime_mem_tracer)
     memstats = runtime_mem_tracer.memstats()
     runtime_tracer_non_model_data = runtime_mem_tracer._memstats._non_model_data_cuda_list
-    print('runtime tracer: ', runtime_tracer_non_model_data)
-    print([memstats.param_used_timestep(p) for p in model.parameters()])
+    print('runtime tracer non model data points: ', len(runtime_tracer_non_model_data))
 
-    model = GeminiDDP(model, device='cuda', placement_policy=placement_policy, search_range_mb=1, memstats=memstats)
-    zero_optim = GeminiAdamOptimizer(model, lr=1e-3, initial_scale=1)
+    world_size = torch.distributed.get_world_size()
+    config_dict, _ = search_chunk_configuration(model, search_range_mb=1, search_interval_byte=100)
+    config_dict[world_size]['chunk_size'] = 5000
+    config_dict[world_size]['keep_gathered'] = keep_gather
+    chunk_manager = ChunkManager(config_dict)
+    gemini_manager = GeminiManager(placement_policy, chunk_manager, memstats)
+    model = ZeroDDP(model, gemini_manager, pin_memory=True)
 
     pg = ProcessGroup()
     set_seed(pg.dp_local_rank())
@@ -61,12 +65,10 @@ def run_gemini_use_rmt(placement_policy, keep_gather, model_name: str, use_grad_
             break
         input_ids, label = input_ids.cuda(), label.cuda()
 
-        zero_optim.zero_grad()
         set_seed(42)
-        loss = run_fwd_bwd(model, input_ids, label, criterion, zero_optim)
-        zero_optim.step()
+        loss = run_fwd_bwd(model, input_ids, label, criterion, model)
 
-    gemini_non_model_data = model.gemini_manager._mem_stats_collector._memstats.non_model_data_list('cuda')
+    gemini_non_model_data = gemini_manager._mem_stats_collector._memstats.non_model_data_list('cuda')
 
     # print('gemini non model data:', gemini_non_model_data)