feat(test): support testing optcast ring-allreduce implementation

Signed-off-by: Wataru Ishida <wataru.ishid@gmail.com>

test/run.py

@@ -8,8 +8,8 @@
 import os
 import re
 import argparse
+import time
 from functools import reduce
-from dateutil import parser
 
 epoch = 0
 
@@ -186,6 +186,8 @@ def get_time(line):
 
 
 def analyze_optcast_client_log(filename, output, xlim=None, no_plot=False):
+    from dateutil import parser
+
     global epoch
     epoch = 0
 
@@ -281,6 +283,8 @@ def get_time(line):
 
 
 def analyze_server_log(filename, output, xlim=None, no_plot=False):
+    from dateutil import parser
+
     global epoch
     epoch = 0
 
@@ -467,14 +471,30 @@ async def client(args):
     rank = int(os.environ["OMPI_COMM_WORLD_RANK"])
     if args.no_gpu:
         client_cmd = f"{args.shared_dir}/{SERVER_CMD}"
-        count = parse_chunksize(args.chunksize) // (4 if args.data_type == "f32" else 2)
-        cmd = f"{client_cmd} -c -a {args.reduction_servers} --count {count} --try-count 1000 --nreq 4"
         os.environ["RUST_LOG"] = "TRACE" if rank == 0 else "INFO"
+
+        nreq = 4
+        try_count = 1000
+        count = parse_chunksize(args.chunksize) // (
+            4 if args.data_type == "f32" else 2
+        )
+        if args.type == "optcast":
+            cmd = f"{client_cmd} -c -a {args.reduction_servers} --count {count} --try-count {try_count} --nreq {nreq}"
+        elif args.type == "ring":
+            with open(args.config) as f:
+                config = yaml.load(f, Loader=yaml.FullLoader)
+            if args.nrank == 0:
+                args.nrank = len(config["clients"])
+            clients = config["clients"][: args.nrank]
+            neighs = [(rank + 1 + i) % args.nrank for i in range(2)]
+            addrs = ",".join(
+                clients[j]["name"] + f":{8080+i}" for i, j in enumerate(neighs)
+            )
+            cmd = f"{client_cmd} -a {addrs} --reduce-threads 2 --count {count} --try-count {try_count} --nrank {args.nrank} --ring-rank {rank+1} --nreq {nreq}"
     else:
         dt = "float" if args.data_type == "f32" else "half"
         client_cmd = f"{args.shared_dir}/{CLIENT_CMD}"
         cmd = f"{client_cmd} -d {dt} -e {args.size} -b {args.size} {args.nccl_test_options}"
-        # print(f"[{platform.node()}] client:", cmd, file=sys.stderr)
 
         os.environ["NCCL_DEBUG"] = "TRACE" if rank == 0 else "INFO"
         os.environ["NCCL_P2P_DISABLE"] = "1"
@@ -558,7 +578,7 @@ async def run(
     clients = config["clients"][: args.nrank]
 
     if args.no_gpu:
-        if args.type not in ["optcast"]:
+        if args.type not in ["optcast", "ring"]:
             raise ValueError(f"no-gpu option doesn't work with {args.type}")
 
     reduction_servers = ",".join(
@@ -574,7 +594,6 @@ async def run(
             f"--client --reduction-servers {reduction_servers}",
         )
     )
-    print("client:", cmd)
     client = await asyncio.create_subprocess_shell(
         cmd,
         stdout=subprocess.PIPE,
@@ -688,7 +707,7 @@ def arguments():
     parser.add_argument("--nsplit", default=1, type=int)
     parser.add_argument("--reduction-servers")
     parser.add_argument(
-        "--type", choices=["optcast", "sharp", "nccl"], default="optcast"
+        "--type", choices=["optcast", "sharp", "nccl", "ring"], default="optcast"
     )
     parser.add_argument("--nccl-test-options", default="-c 1 -n 1 -w 1")
     parser.add_argument("--data-type", default="f32", choices=["f32", "f16"])