[neurun] Clearify Scheduler::ESTAndExecTime with comments (#6649)

Add comments to clearify return values in case of non-parallel-executor

Signed-off-by: Poshshoev Dilshodzhon <d.poshshoev@samsung.com>

diff --git a/runtimes/neurun/core/src/compiler/Scheduler.cc b/runtimes/neurun/core/src/compiler/Scheduler.cc
index bbdab80..6480f2f 100644 (file)
--- a/runtimes/neurun/core/src/compiler/Scheduler.cc
+++ b/runtimes/neurun/core/src/compiler/Scheduler.cc
@@ -503,7 +503,11 @@ Scheduler::ESTAndExecTime(const backend::Backend *backend, const model::Operatio
     _backends_avail_time[cpu_backend].erase(it);
   }
 
-  // In case non-parallel executor measure just exec time and data transfer time
+  /* In case non-parallel executor measure just exec time and data transfer time
+   * because EFT(prev_op_ft) is the same for all backends. Since two operations
+   * can't be run simultaneously, finish of running operation must be waited for.
+   * When an operation starts, all backends are free. So, they need time just for
+   * data transfer.*/
   if (!is_parallel_exec)
   {
     VERBOSE(Scheduler::ESTAndExecTime)