Remove duplicate transactions from bidirectional copy requests

rocm_bandwidth_test.hpp

@@ -326,6 +326,9 @@ class RocmBandwidthTest : public BaseTest {
                      hsa_device_type_t dev_type,
                      bool fine_grained);
 
+  // Find the mirror transaction if present
+  bool FindMirrorRequest(uint32_t src_idx, uint32_t dst_idx);
+
   // @brief: Check if agent and access memory pool, if so, set 
   // access to the agent, if not, exit
   void AcquireAccess(hsa_agent_t agent, void* ptr);

rocm_bandwidth_test_report.cpp

@@ -231,10 +231,12 @@ void RocmBandwidthTest::DisplayCopyTimeMatrix(bool peak) const {
     uint32_t dst_idx = trans.copy.dst_idx_;
     uint32_t src_dev_idx = pool_list_[src_idx].agent_index_;
     uint32_t dst_dev_idx = pool_list_[dst_idx].agent_index_;
-    if (peak) {
-      perf_matrix[(src_dev_idx * agent_index_) + dst_dev_idx] = trans.peak_bandwidth_[0];
-    } else {
-      perf_matrix[(src_dev_idx * agent_index_) + dst_dev_idx] = trans.avg_bandwidth_[0];
+
+    // For COPY_ALL_UNIDIR and COPY_ALL_BIDIR we use only one copy size
+    double bandwidth = (peak) ? trans.peak_bandwidth_[0] : trans.avg_bandwidth_[0];
+    perf_matrix[(src_dev_idx * agent_index_) + dst_dev_idx] = bandwidth;
+    if (req_copy_all_bidir_ == REQ_COPY_ALL_BIDIR) {
+      perf_matrix[(dst_dev_idx * agent_index_) + src_dev_idx] = bandwidth;
     }
   }
 
@@ -314,6 +316,9 @@ void RocmBandwidthTest::DisplayValidationMatrix() const {
     uint32_t src_dev_idx = pool_list_[src_idx].agent_index_;
     uint32_t dst_dev_idx = pool_list_[dst_idx].agent_index_;
     perf_matrix[(src_dev_idx * agent_index_) + dst_dev_idx] = trans.peak_bandwidth_[0];
+    if (req_copy_all_bidir_ == REQ_COPY_ALL_BIDIR) {
+      perf_matrix[(dst_dev_idx * agent_index_) + src_dev_idx] = trans.peak_bandwidth_[0];
+    }
   }
 
   uint32_t format = 10;

rocm_bandwidth_test_trans.cpp

@@ -43,6 +43,20 @@
 #include "common.hpp"
 #include "rocm_bandwidth_test.hpp"
 
+bool RocmBandwidthTest::FindMirrorRequest(uint32_t src_idx, uint32_t dst_idx) {
+
+  uint32_t size = trans_list_.size();
+  for (uint32_t idx = 0; idx < size; idx++) {
+    async_trans_t& mirror = trans_list_[idx];
+    if ((src_idx == mirror.copy.dst_idx_) &&
+        (dst_idx == mirror.copy.src_idx_)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
 bool RocmBandwidthTest::BuildReadOrWriteTrans(uint32_t req_type,
                                       vector<size_t>& in_list) {
 
@@ -157,6 +171,13 @@ bool RocmBandwidthTest::BuildCopyTrans(uint32_t req_type,
         if (src_dev_idx == dst_dev_idx) {
           continue;
         }
+
+        if (src_dev_idx > dst_dev_idx) {
+          bool mirror = FindMirrorRequest(src_idx, dst_idx);
+          if (mirror) {
+            continue;
+          }
+        }
       }
 
       // Determine if accessibility to dst pool for src agent is not denied
@@ -171,6 +192,17 @@ bool RocmBandwidthTest::BuildCopyTrans(uint32_t req_type,
         }
       }
 
+      // For bidirectional copies determine both access paths are valid
+      // Both paths are valid when one of the devices is a CPU. This is
+      // not true when both of the devices are GPU's.
+      if ((req_type == REQ_COPY_ALL_BIDIR) ||
+          (req_type == REQ_COPY_ALL_UNIDIR)) {
+        path_exists = access_matrix_[(dst_dev_idx * agent_index_) + src_dev_idx];
+        if (path_exists == 0) {
+          continue;
+        }
+      }
+
       // Update the list of agents active in any copy operation
       if (active_agents_list_ == NULL) {
         active_agents_list_  = new uint32_t[agent_index_]();