Adding profiling to dask shuffle (#625)

Adding benchmark profile for dask shuffle.

Authors:
  - Arun Raman (https://github.com/arunraman)
  - Mads R. B. Kristensen (https://github.com/madsbk)

Approvers:
  - https://github.com/jakirkham

URL: #625

dask_cuda/benchmarks/local_cudf_shuffle.py

@@ -22,28 +22,16 @@
 from dask_cuda.utils import all_to_all
 
 
-def shuffle_dask(args, df, write_profile):
-    if write_profile is None:
-        ctx = contextlib.nullcontext()
-    else:
-        ctx = performance_report(filename=args.profile)
-
-    # Execute the operations to benchmark
-    with ctx:
-        t1 = clock()
-        wait(shuffle(df, index="data", shuffle="tasks").persist())
-        return clock() - t1
+def shuffle_dask(df):
+    wait(shuffle(df, index="data", shuffle="tasks").persist())
 
 
-def shuffle_explicit_comms(args, df):
-    t1 = clock()
+def shuffle_explicit_comms(df):
     wait(
         dask_cuda.explicit_comms.dataframe.shuffle.shuffle(
             df, column_names="data"
         ).persist()
     )
-    took = clock() - t1
-    return took
 
 
 def run(client, args, n_workers, write_profile=None):
@@ -63,12 +51,20 @@ def run(client, args, n_workers, write_profile=None):
     wait(df)
     data_processed = len(df) * sum([t.itemsize for t in df.dtypes])
 
-    if args.backend == "dask":
-        took = shuffle_dask(args, df, write_profile)
+    if write_profile is None:
+        ctx = contextlib.nullcontext()
     else:
-        took = shuffle_explicit_comms(args, df)
+        ctx = performance_report(filename=args.profile)
+
+    with ctx:
+        t1 = clock()
+        if args.backend == "dask":
+            shuffle_dask(df)
+        else:
+            shuffle_explicit_comms(df)
+        t2 = clock()
 
-    return (data_processed, took)
+    return (data_processed, t2 - t1)
 
 
 def main(args):