diff --git a/test/AllReduce_GroupCall.cpp b/test/AllReduce_GroupCall.cpp
index 5b2ad88030..2b6d7ec77f 100644
--- a/test/AllReduce_GroupCall.cpp
+++ b/test/AllReduce_GroupCall.cpp
@@ -26,6 +26,8 @@ namespace RcclUnitTesting
     for (int totalRanks = testBed.ev.minGpus; totalRanks <= testBed.ev.maxGpus && isCorrect; ++totalRanks)
     for (int isMultiProcess = 0; isMultiProcess <= 1 && isCorrect; ++isMultiProcess)
     {
+      if (!(testBed.ev.processMask & (1 << isMultiProcess))) continue;
+
       // Test either single process all GPUs, or 1 process per GPU
       int const numProcesses = isMultiProcess ? totalRanks : 1;
       testBed.InitComms(TestBed::GetDeviceIdsList(numProcesses, totalRanks), numCollPerGroup);
diff --git a/test/AllReduce_PreMultScalar.cpp b/test/AllReduce_PreMultScalar.cpp
index 2674fa7a5e..ddf03c58a0 100644
--- a/test/AllReduce_PreMultScalar.cpp
+++ b/test/AllReduce_PreMultScalar.cpp
@@ -26,6 +26,8 @@ namespace RcclUnitTesting
     for (int totalRanks = testBed.ev.minGpus; totalRanks <= testBed.ev.maxGpus && isCorrect; ++totalRanks)
     for (int isMultiProcess = 0; isMultiProcess <= 1; ++isMultiProcess)
     {
+      if (!(testBed.ev.processMask & (1 << isMultiProcess))) continue;
+
       int const numProcesses = isMultiProcess ? totalRanks : 1;
       testBed.InitComms(TestBed::GetDeviceIdsList(numProcesses, totalRanks));
 
diff --git a/test/SendRecv_SinglePairs.cpp b/test/SendRecv_SinglePairs.cpp
old mode 100755
new mode 100644
index 158788a84c..857acbe1a9
--- a/test/SendRecv_SinglePairs.cpp
+++ b/test/SendRecv_SinglePairs.cpp
@@ -21,6 +21,8 @@ namespace RcclUnitTesting
     int totalRanks = testBed.ev.maxGpus;
     for (int isMultiProcess = 0; isMultiProcess <= 1 && isCorrect; ++isMultiProcess)
     {
+      if (!(testBed.ev.processMask & (1 << isMultiProcess))) continue;
+
       int const numProcesses = isMultiProcess ? totalRanks : 1;
       testBed.InitComms(TestBed::GetDeviceIdsList(numProcesses, totalRanks), 1);
 
@@ -32,7 +34,7 @@ namespace RcclUnitTesting
         {
           testBed.SetCollectiveArgs(ncclCollSend,
                                     dataTypes[dataIdx],
-                                    ncclSum, // This should be moved to optional variables struct
+                                    ncclSum,
                                     recvRank,
                                     numElements[numIdx],
                                     numElements[numIdx],
@@ -40,7 +42,6 @@ namespace RcclUnitTesting
                                     sendRank);
           if (recvRank == 0)
           {
-
             testBed.AllocateMem(inPlace, useManagedMem, 0, sendRank);
             testBed.PrepareData(0, sendRank);
           }
@@ -57,7 +58,7 @@ namespace RcclUnitTesting
 
             testBed.SetCollectiveArgs(ncclCollRecv,
                                       dataTypes[dataIdx],
-                                      ncclSum, // This should be moved to optional variables struct
+                                      ncclSum,
                                       sendRank,
                                       numElements[numIdx],
                                       numElements[numIdx],
@@ -76,4 +77,4 @@ namespace RcclUnitTesting
     }
     testBed.Finalize();
   }
-}
\ No newline at end of file
+}