Add pipeline version to GroupedGEMM device op type string.

include/ck/tensor_operation/gpu/device/impl/device_grouped_gemm_xdl_splitk_cshuffle.hpp

@@ -736,7 +736,8 @@ struct DeviceGroupedGemmXdlSplitKCShuffle : public DeviceGroupedGemmSplitK<ALayo
             << CShuffleMXdlPerWavePerShuffle << ", "
             << CShuffleNXdlPerWavePerShuffle << ", "
             << ABlockTransferThreadClusterLengths_K0_M_K1{} << ", "
-            << getGemmSpecializationString(GemmSpec)
+            << getGemmSpecializationString(GemmSpec) << ", "
+            << PipelineVer{}
             << ">";
         // clang-format on
 

include/ck/tensor_operation/gpu/grid/gridwise_gemm_pipeline_selector.hpp

@@ -4,6 +4,8 @@
 #pragma once
 
 #include <iostream>
+#include <ostream>
+#include <string>
 
 #include "ck/tensor_operation/gpu/grid/gridwise_gemm_pipeline_v1.hpp"
 #include "ck/tensor_operation/gpu/grid/gridwise_gemm_pipeline_v2.hpp"
@@ -42,4 +44,20 @@ constexpr auto GridwiseGemmPipeline_Selector()
     }
 }
 
+std::string getPipelineVersionString(const PipelineVersion& pv)
+{
+    switch(pv)
+    {
+    case PipelineVersion::v1: return "PipelineVersion::v1";
+    case PipelineVersion::v2: return "PipelineVersion::v2";
+    default: return "Unrecognized pipeline version!";
+    }
+}
+
 } // namespace ck
+
+std::ostream& operator<<(std::ostream& os, const PipelineVersion pv)
+{
+    os << getPipelineVersionString(pv);
+    return os;
+}