Unit test performance refactor (#700)

* Refactoring unit tests to improve performance
* Spawning child processes during InitComms instead of on TestBed construction
* Temporarily disabling graph unit tests

test/NonBlockingTests.cpp

@@ -0,0 +1,70 @@
+/*************************************************************************
+ * Copyright (c) 2023 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * See LICENSE.txt for license information
+ ************************************************************************/
+#include "TestBed.hpp"
+
+namespace RcclUnitTesting
+{
+  // Test various collectives using with non-blocking comms
+  TEST(NonBlocking, SingleCalls)
+  {
+    TestBed testBed;
+
+    // Configuration
+    std::vector<ncclFunc_t> const  funcTypes = {ncclCollBroadcast,
+                                                ncclCollReduce,
+                                                ncclCollAllGather,
+                                                ncclCollReduceScatter,
+                                                ncclCollAllReduce,
+                                                ncclCollGather,
+                                                ncclCollScatter};
+    int        const  numElements   = 1048576;
+    bool       const  inPlace       = false;
+    bool       const  useManagedMem = false;
+    bool       const  useBlocking   = false;
+
+    OptionalColArgs options;
+    options.redOp = ncclSum;
+
+    bool isCorrect = true;
+    for (int totalRanks : testBed.ev.GetNumGpusList())
+    for (int isMultiProcess : testBed.ev.GetIsMultiProcessList())
+    {
+      int const numProcesses = isMultiProcess ? totalRanks : 1;
+      // Initialize communicators in non-blocking mode
+      testBed.InitComms(TestBed::GetDeviceIdsList(numProcesses, totalRanks), 1, useBlocking);
+
+      // Loop over various collective functions
+      for (auto funcType : funcTypes)
+      {
+        if (testBed.ev.showNames)
+          INFO("%s %d-ranks Non-Blocking %s\n",
+               isMultiProcess ? "MP" : "SP", totalRanks, ncclFuncNames[funcType]);
+
+        int numInputElements;
+        int numOutputElements;
+        CollectiveArgs::GetNumElementsForFuncType(funcType,
+                                                  numElements,
+                                                  totalRanks,
+                                                  &numInputElements,
+                                                  &numOutputElements);
+
+        testBed.SetCollectiveArgs(funcType,
+                                  ncclFloat,
+                                  numInputElements,
+                                  numOutputElements,
+                                  options);
+
+        testBed.AllocateMem(inPlace, useManagedMem);
+        testBed.PrepareData();
+        testBed.ExecuteCollectives();
+        testBed.ValidateResults(isCorrect);
+        testBed.DeallocateMem();
+      }
+      testBed.DestroyComms();
+    }
+    testBed.Finalize();
+  }
+}