Fixes warnings when running AutoMate env (#3660)

# Description

* Fixes the warning messages reported in the QA testing
* Remove redundant config argument 'sample_from'
* Change the default value of config argument 'num_log_traj'

## Type of change

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

---------
Co-authored-by: Kelly Guo <kellyg@nvidia.com>

source/isaaclab_tasks/isaaclab_tasks/direct/automate/assembly_env.py

@@ -60,25 +60,12 @@ class AssemblyEnv(DirectRLEnv):
         )
 
         # Create criterion for dynamic time warping (later used for imitation reward)
-        self.soft_dtw_criterion = SoftDTW(use_cuda=True, gamma=self.cfg_task.soft_dtw_gamma)
+        self.soft_dtw_criterion = SoftDTW(use_cuda=True, device=self.device, gamma=self.cfg_task.soft_dtw_gamma)
 
         # Evaluate
         if self.cfg_task.if_logging_eval:
             self._init_eval_logging()
 
-        if self.cfg_task.sample_from != "rand":
-            self._init_eval_loading()
-
-    def _init_eval_loading(self):
-        eval_held_asset_pose, eval_fixed_asset_pose, eval_success = automate_log.load_log_from_hdf5(
-            self.cfg_task.eval_filename
-        )
-
-        if self.cfg_task.sample_from == "gp":
-            self.gp = automate_algo.model_succ_w_gp(eval_held_asset_pose, eval_fixed_asset_pose, eval_success)
-        elif self.cfg_task.sample_from == "gmm":
-            self.gmm = automate_algo.model_succ_w_gmm(eval_held_asset_pose, eval_fixed_asset_pose, eval_success)
-
     def _init_eval_logging(self):
 
         self.held_asset_pose_log = torch.empty(
@@ -246,7 +233,7 @@ class AssemblyEnv(DirectRLEnv):
             # offset each trajectory to be relative to the goal
             eef_pos_traj.append(curr_ee_traj - curr_ee_goal)
 
-        self.eef_pos_traj = torch.tensor(eef_pos_traj, dtype=torch.float32, device=self.device).squeeze()
+        self.eef_pos_traj = torch.tensor(np.array(eef_pos_traj), dtype=torch.float32, device=self.device).squeeze()
 
     def _get_keypoint_offsets(self, num_keypoints):
         """Get uniformly-spaced keypoints along a line of unit length, centered at 0."""
@@ -804,28 +791,12 @@ class AssemblyEnv(DirectRLEnv):
                 torch.rand((self.num_envs,), dtype=torch.float32, device=self.device)
             )
 
-            if self.cfg_task.sample_from == "rand":
-
-                rand_sample = torch.rand((len(env_ids), 3), dtype=torch.float32, device=self.device)
-                held_pos_init_rand = 2 * (rand_sample - 0.5)  # [-1, 1]
-                held_asset_init_pos_rand = torch.tensor(
-                    self.cfg_task.held_asset_init_pos_noise, dtype=torch.float32, device=self.device
-                )
-                self.held_pos_init_rand = held_pos_init_rand @ torch.diag(held_asset_init_pos_rand)
-
-            if self.cfg_task.sample_from == "gp":
-                rand_sample = torch.rand((self.cfg_task.num_gp_candidates, 3), dtype=torch.float32, device=self.device)
-                held_pos_init_rand = 2 * (rand_sample - 0.5)  # [-1, 1]
-                held_asset_init_pos_rand = torch.tensor(
-                    self.cfg_task.held_asset_init_pos_noise, dtype=torch.float32, device=self.device
-                )
-                held_asset_init_candidates = held_pos_init_rand @ torch.diag(held_asset_init_pos_rand)
-                self.held_pos_init_rand, _ = automate_algo.propose_failure_samples_batch_from_gp(
-                    self.gp, held_asset_init_candidates.cpu().detach().numpy(), len(env_ids), self.device
-                )
-
-            if self.cfg_task.sample_from == "gmm":
-                self.held_pos_init_rand = automate_algo.sample_rel_pos_from_gmm(self.gmm, len(env_ids), self.device)
+            rand_sample = torch.rand((len(env_ids), 3), dtype=torch.float32, device=self.device)
+            held_pos_init_rand = 2 * (rand_sample - 0.5)  # [-1, 1]
+            held_asset_init_pos_rand = torch.tensor(
+                self.cfg_task.held_asset_init_pos_noise, dtype=torch.float32, device=self.device
+            )
+            self.held_pos_init_rand = held_pos_init_rand @ torch.diag(held_asset_init_pos_rand)
 
         # Set plug pos to assembled state, but offset plug Z-coordinate by height of socket,
         # minus curriculum displacement

source/isaaclab_tasks/isaaclab_tasks/direct/automate/assembly_tasks_cfg.py

@@ -139,10 +139,6 @@ class AssemblyTask:
     num_eval_trials: int = 100
     eval_filename: str = "evaluation_00015.h5"
 
-    # Fine-tuning
-    sample_from: str = "rand"  # gp, gmm, idv, rand
-    num_gp_candidates: int = 1000
-
 
 @configclass
 class Peg8mm(HeldAssetCfg):

source/isaaclab_tasks/isaaclab_tasks/direct/automate/disassembly_tasks_cfg.py

@@ -118,7 +118,7 @@ class Extraction(DisassemblyTask):
     assembly_id = "00015"
     assembly_dir = f"{ASSET_DIR}/{assembly_id}/"
     disassembly_dir = "disassembly_dir"
-    num_log_traj = 1000
+    num_log_traj = 100
 
     fixed_asset_cfg = Hole8mm()
     held_asset_cfg = Peg8mm()

source/isaaclab_tasks/isaaclab_tasks/direct/automate/run_w_id.py

@@ -59,11 +59,12 @@ def main():
 
     update_task_param(args.cfg_path, args.assembly_id, args.train, args.log_eval)
 
-    bash_command = None
+    # avoid the warning of low GPU occupancy for SoftDTWCUDA function
+    bash_command = "NUMBA_CUDA_LOW_OCCUPANCY_WARNINGS=0"
     if sys.platform.startswith("win"):
-        bash_command = "isaaclab.bat -p"
+        bash_command += " isaaclab.bat -p"
     elif sys.platform.startswith("linux"):
-        bash_command = "./isaaclab.sh -p"
+        bash_command += " ./isaaclab.sh -p"
     if args.train:
         bash_command += " scripts/reinforcement_learning/rl_games/train.py --task=Isaac-AutoMate-Assembly-Direct-v0"
         bash_command += f" --seed={str(args.seed)} --max_iterations={str(args.max_iterations)}"

source/isaaclab_tasks/isaaclab_tasks/direct/automate/soft_dtw_cuda.py

@@ -120,11 +120,11 @@ class _SoftDTWCUDA(Function):
     """
 
     @staticmethod
-    def forward(ctx, D, gamma, bandwidth):
+    def forward(ctx, D, device, gamma, bandwidth):
         dev = D.device
         dtype = D.dtype
-        gamma = torch.cuda.FloatTensor([gamma])
-        bandwidth = torch.cuda.FloatTensor([bandwidth])
+        gamma = torch.tensor([gamma], dtype=torch.float, device=device)
+        bandwidth = torch.tensor([bandwidth], dtype=torch.float, device=device)
 
         B = D.shape[0]
         N = D.shape[1]
@@ -255,7 +255,7 @@ class _SoftDTW(Function):
     """
 
     @staticmethod
-    def forward(ctx, D, gamma, bandwidth):
+    def forward(ctx, D, device, gamma, bandwidth):
         dev = D.device
         dtype = D.dtype
         gamma = torch.Tensor([gamma]).to(dev).type(dtype)  # dtype fixed
@@ -286,10 +286,11 @@ class SoftDTW(torch.nn.Module):
     The soft DTW implementation that optionally supports CUDA
     """
 
-    def __init__(self, use_cuda, gamma=1.0, normalize=False, bandwidth=None, dist_func=None):
+    def __init__(self, use_cuda, device, gamma=1.0, normalize=False, bandwidth=None, dist_func=None):
         """
         Initializes a new instance using the supplied parameters
         :param use_cuda: Flag indicating whether the CUDA implementation should be used
+        :param device: device to run the soft dtw computation
         :param gamma: sDTW's gamma parameter
         :param normalize: Flag indicating whether to perform normalization
                           (as discussed in https://github.com/mblondel/soft-dtw/issues/10#issuecomment-383564790)
@@ -301,6 +302,7 @@ class SoftDTW(torch.nn.Module):
         self.gamma = gamma
         self.bandwidth = 0 if bandwidth is None else float(bandwidth)
         self.use_cuda = use_cuda
+        self.device = device
 
         # Set the distance function
         if dist_func is not None:
@@ -357,12 +359,12 @@ class SoftDTW(torch.nn.Module):
             x = torch.cat([X, X, Y])
             y = torch.cat([Y, X, Y])
             D = self.dist_func(x, y)
-            out = func_dtw(D, self.gamma, self.bandwidth)
+            out = func_dtw(D, self.device, self.gamma, self.bandwidth)
             out_xy, out_xx, out_yy = torch.split(out, X.shape[0])
             return out_xy - 1 / 2 * (out_xx + out_yy)
         else:
             D_xy = self.dist_func(X, Y)
-            return func_dtw(D_xy, self.gamma, self.bandwidth)
+            return func_dtw(D_xy, self.device, self.gamma, self.bandwidth)
 
 
 # ----------------------------------------------------------------------------------------------------------------------