Expose gather mode to tridesclous2 and spykingcircus2

src/spikeinterface/core/node_pipeline.py

@@ -571,14 +571,14 @@ def run_node_pipeline(
         The classical job_kwargs
     job_name : str
         The name of the pipeline used for the progress_bar
-    gather_mode : "memory" | "npz"
-
+    gather_mode : "memory" | "npy"
+        How to gather the output of the nodes.
     gather_kwargs : dict
         OPtions to control the "gather engine". See GatherToMemory or GatherToNpy.
     squeeze_output : bool, default True
         If only one output node then squeeze the tuple
     folder : str | Path | None
-        Used for gather_mode="npz"
+        Used for gather_mode="npy"
     names : list of str
         Names of outputs.
     verbose : bool, default False

src/spikeinterface/sorters/internal/spyking_circus2.py

@@ -365,13 +365,23 @@ def _run_from_folder(cls, sorter_output_folder, params, verbose):
                 templates.to_zarr(folder_path=clustering_folder / "templates")
 
             ## We launch a OMP matching pursuit by full convolution of the templates and the raw traces
+
             matching_method = params["matching"].get("method", "circus-omp_svd")
+            gather_mode = params["matching"].pop("gather_mode", "memory")
             matching_params = params["matching"].get("method_kwargs", dict())
             matching_params["templates"] = templates
 
             if matching_method is not None:
+                gather_kwargs = {}
+                if gather_mode == "npy":
+                    gather_kwargs["folder"] = sorter_output_folder / "matching"
                 spikes = find_spikes_from_templates(
-                    recording_w, matching_method, method_kwargs=matching_params, **job_kwargs
+                    recording_w,
+                    matching_method,
+                    method_kwargs=matching_params,
+                    gather_mode=gather_mode,
+                    gather_kwargs=gather_kwargs,
+                    **job_kwargs,
                 )
 
                 if debug:

src/spikeinterface/sorters/internal/tests/test_spykingcircus2.py

@@ -1,15 +1,36 @@
 import unittest
 
 from spikeinterface.sorters.tests.common_tests import SorterCommonTestSuite
-
-from spikeinterface.sorters import Spykingcircus2Sorter
+from spikeinterface.sorters import Spykingcircus2Sorter, run_sorter
 
 from pathlib import Path
 
 
 class SpykingCircus2SorterCommonTestSuite(SorterCommonTestSuite, unittest.TestCase):
     SorterClass = Spykingcircus2Sorter
 
+    @unittest.skip("performance reason")
+    def test_with_numpy_gather(self):
+        recording = self.recording
+        sorter_name = self.SorterClass.sorter_name
+        output_folder = self.cache_folder / sorter_name
+        sorter_params = self.SorterClass.default_params()
+
+        sorter_params["matching"]["gather_mode"] = "npy"
+
+        sorting = run_sorter(
+            sorter_name,
+            recording,
+            folder=output_folder,
+            remove_existing_folder=True,
+            delete_output_folder=False,
+            verbose=False,
+            raise_error=True,
+            **sorter_params,
+        )
+        assert (output_folder / "sorter_output" / "matching").is_dir()
+        assert (output_folder / "sorter_output" / "matching" / "spikes.npy").is_file()
+
 
 if __name__ == "__main__":
     from spikeinterface import set_global_job_kwargs

src/spikeinterface/sorters/internal/tests/test_tridesclous2.py

@@ -2,14 +2,36 @@
 
 from spikeinterface.sorters.tests.common_tests import SorterCommonTestSuite
 
-from spikeinterface.sorters import Tridesclous2Sorter
+from spikeinterface.sorters import Tridesclous2Sorter, run_sorter
 
 from pathlib import Path
 
 
 class Tridesclous2SorterCommonTestSuite(SorterCommonTestSuite, unittest.TestCase):
     SorterClass = Tridesclous2Sorter
 
+    @unittest.skip("performance reason")
+    def test_with_numpy_gather(self):
+        recording = self.recording
+        sorter_name = self.SorterClass.sorter_name
+        output_folder = self.cache_folder / sorter_name
+        sorter_params = self.SorterClass.default_params()
+
+        sorter_params["matching"]["gather_mode"] = "npy"
+
+        sorting = run_sorter(
+            sorter_name,
+            recording,
+            folder=output_folder,
+            remove_existing_folder=True,
+            delete_output_folder=False,
+            verbose=False,
+            raise_error=True,
+            **sorter_params,
+        )
+        assert (output_folder / "sorter_output" / "matching").is_dir()
+        assert (output_folder / "sorter_output" / "matching" / "spikes.npy").is_file()
+
 
 if __name__ == "__main__":
     test = Tridesclous2SorterCommonTestSuite()

src/spikeinterface/sorters/internal/tridesclous2.py

@@ -63,7 +63,7 @@ class Tridesclous2Sorter(ComponentsBasedSorter):
         },
         # "matching": {"method": "tridesclous", "method_kwargs": {"peak_shift_ms": 0.2, "radius_um": 100.0}},
         # "matching": {"method": "circus-omp-svd", "method_kwargs": {}},
-        "matching": {"method": "wobble", "method_kwargs": {}},
+        "matching": {"method": "wobble", "method_kwargs": {}, "gather_mode": "memory"},
         "job_kwargs": {"n_jobs": -1},
         "save_array": True,
     }
@@ -232,13 +232,22 @@ def _run_from_folder(cls, sorter_output_folder, params, verbose):
         templates = remove_empty_templates(templates)
 
         ## peeler
-        matching_method = params["matching"]["method"]
-        matching_params = params["matching"]["method_kwargs"].copy()
+        matching_method = params["matching"].pop("method")
+        gather_mode = params["matching"].pop("gather_mode", "memory")
+        matching_params = params["matching"].get("matching_kwargs", {}).copy()
         matching_params["templates"] = templates
-        if params["matching"]["method"] in ("tdc-peeler",):
+        if matching_method in ("tdc-peeler",):
             matching_params["noise_levels"] = noise_levels
+        gather_kwargs = {}
+        if gather_mode == "npy":
+            gather_kwargs["folder"] = sorter_output_folder / "matching"
         spikes = find_spikes_from_templates(
-            recording_for_peeler, method=matching_method, method_kwargs=matching_params, **job_kwargs
+            recording_for_peeler,
+            method=matching_method,
+            method_kwargs=matching_params,
+            gather_mode=gather_mode,
+            gather_kwargs=gather_kwargs,
+            **job_kwargs,
         )
 
         if params["save_array"]:

src/spikeinterface/sortingcomponents/matching/main.py

@@ -11,7 +11,14 @@
 
 
 def find_spikes_from_templates(
-    recording, method="naive", method_kwargs={}, extra_outputs=False, verbose=False, **job_kwargs
+    recording,
+    method="naive",
+    method_kwargs={},
+    extra_outputs=False,
+    gather_mode="memory",
+    gather_kwargs=None,
+    verbose=False,
+    **job_kwargs,
 ) -> np.ndarray | tuple[np.ndarray, dict]:
     """Find spike from a recording from given templates.
 
@@ -25,10 +32,14 @@ def find_spikes_from_templates(
         Keyword arguments for the chosen method
     extra_outputs : bool
         If True then a dict is also returned is also returned
-    **job_kwargs : dict
-        Parameters for ChunkRecordingExecutor
+    gather_mode : "memory" | "npy", default: "memory"
+        If "memory" then the output is gathered in memory, if "npy" then the output is gathered on disk
+    gather_kwargs : dict, optional
+        The kwargs for the gather method
     verbose : Bool, default: False
         If True, output is verbose
+    **job_kwargs : keyword arguments
+        Parameters for ChunkRecordingExecutor
 
     Returns
     -------
@@ -50,13 +61,18 @@ def find_spikes_from_templates(
     if len(method_kwargs["templates"].unit_ids) == 0:
         return np.zeros(0, dtype=node0.get_dtype())
 
+    gather_kwargs = gather_kwargs or {}
+    names = ["spikes"]
+
     spikes = run_node_pipeline(
         recording,
         nodes,
         job_kwargs,
         job_name=f"find spikes ({method})",
-        gather_mode="memory",
+        gather_mode=gather_mode,
         squeeze_output=True,
+        names=names,
+        **gather_kwargs,
     )
     if extra_outputs:
         outputs = node0.get_extra_outputs()