Rearranged data transfer slides

csc-training · Aug 30, 2024 · 77c15fd · 77c15fd
1 parent d009423
commit 77c15fd
Showing 1 changed file with 33 additions and 35 deletions.
diff --git a/B3/L9/docs/gpu_lecture.md b/B3/L9/docs/gpu_lecture.md
@@ -375,31 +375,6 @@ Accelerator Kernel Timing data
 ```
 </div>
 
-
-
-# Data clauses
-
-| <span style="font-size:75%;"> Clause </span> | <span style="font-size:75%;"> Behavior </span> |
-| --- | ------ |
-| <span style="font-size:75%;"> COPYIN </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create space and copy data to device </span> |
-| <span style="font-size:75%;"> COPYOUT </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create space and copy resulting data from device </span> |
-| <span style="font-size:75%;"> COPY </span> | <span style="font-size:75%;"> Behaves like both COPYIN and COPYOUT </span> |
-| <span style="font-size:75%;"> CREATE </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create empty space </span> |
-| <span style="font-size:75%;"> PRESENT </span> | <span style="font-size:75%;"> Assume that variables are already present on device </span> |
-
-<span style="font-size:75%;"> Remark: Scalars are first private by default, they rarely appear in a data clause </span>
-
-# Update clauses
-
-Within data regions host and device memory can be updated with the <span style="color: green;"> `UPDATE` </span> clause
-
-<br>
-
-| <span style="font-size:75%;"> Clause </span> | <span style="font-size:75%;"> Behavior </span> |
-| --- | ------ |
-| <span style="font-size:75%;"> UPDATE DEVICE </span> | <span style="font-size:75%;"> Copy data from host to device </span> |
-| <span style="font-size:75%;"> UPDATE SELF </span> <br> <span style="font-size:75%;"> UPDATE HOST </span> | <span style="font-size:75%;"> Copy data from device to host </span> |
-
 # Optimization: Device data management
 
 <div class=column style=width:32%>
@@ -444,16 +419,6 @@ END PROGRAM
 
 # Optimization: Device data management
 
-* Syntax: 
-<br>
-<span style="color: green;">`!$ACC DATA [data_clause]`</span>
-<br>
-<span style="color: green;">`!$ACC END DATA`</span>
-
-* data_clause: e.g. <span style="color: green;"> `CREATE` </span>, <span style="color: green;"> `COPYIN` </span>
-
-# Optimization: Device data management
-
 <div class=column style=width:48%>
 ```
 > NVCOMPILER_ACC_TIME=1 ./p1A
@@ -505,6 +470,39 @@ Accelerator Kernel Timing data
              device time(us): total=28 max=28 min=28 avg=28
 ```
 
+# Optimization: Device data management
+
+* Syntax: 
+<br>
+<span style="color: green;">`!$ACC DATA [data_clause]`</span>
+<br>
+<span style="color: green;">`!$ACC END DATA`</span>
+
+* data_clause: e.g. <span style="color: green;"> `CREATE` </span>, <span style="color: green;"> `COPYIN` </span>
+
+# Data clauses
+
+| <span style="font-size:75%;"> Clause </span> | <span style="font-size:75%;"> Behavior </span> |
+| --- | ------ |
+| <span style="font-size:75%;"> COPYIN </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create space and copy data to device </span> |
+| <span style="font-size:75%;"> COPYOUT </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create space and copy resulting data from device </span> |
+| <span style="font-size:75%;"> COPY </span> | <span style="font-size:75%;"> Behaves like both COPYIN and COPYOUT </span> |
+| <span style="font-size:75%;"> CREATE </span> | <span style="font-size:75%;"> Check if variables are already present on device; if not create empty space </span> |
+| <span style="font-size:75%;"> PRESENT </span> | <span style="font-size:75%;"> Assume that variables are already present on device </span> |
+
+<span style="font-size:75%;"> Remark: Scalars are first private by default, they rarely appear in a data clause </span>
+
+# Update clauses
+
+Within data regions host and device memory can be updated with the <span style="color: green;"> `UPDATE` </span> clause
+
+<br>
+
+| <span style="font-size:75%;"> Clause </span> | <span style="font-size:75%;"> Behavior </span> |
+| --- | ------ |
+| <span style="font-size:75%;"> UPDATE DEVICE </span> | <span style="font-size:75%;"> Copy data from host to device </span> |
+| <span style="font-size:75%;"> UPDATE SELF </span> <br> <span style="font-size:75%;"> UPDATE HOST </span> | <span style="font-size:75%;"> Copy data from device to host </span> |
+
 # Explicit data transfer
 
 <div class=column style=width:30%>