The DMA transfer metric all_dmaenables tracing
DMA activity from memory tiles on AI Engine. This metric adds functions and activity
events for all four DMA channels to trace, while the all_stalls_dma metric set includes stall events to trace.
These metrics provide information on each channel, such as the amount of data
being transferred. In the xrt.ini file, metric sets
are supported for AI Engine tiles only.
| Event Type / Metric Set | all_dma | all_stalls_dma |
|---|---|---|
| Functions | Captured | Captured |
| Stalls (stream/lock/cascade/memory) | NA | Captured |
| Running activity of all four DMA Channels | Captured | Captured |
all_stalls_dma metric, so stall type is not
shown.| Option | Description |
|---|---|
tile_based_aie_tile_metrics =
{<mincolumn,<minrow>}:
|
Configures the AI Engine tile DMA event trace metric to be applied for a range of tiles. |
tile_based_aie_tile_metrics =
<{<column>,<row>}|all>:<all_dma|all_stalls_dma>
|
Configures the AI Engine tile DMA event trace metric to be applied for single or all tiles. |
graph_based_aie_tile_metrics =
|
Configures the AI Engine tile DMA event trace metric to be applied for all DMA in a specific or all graphs. |
Following are xrt.ini file examples
#Sets event trace to "all_stalls_dma" for the kernel2 of graph1 and "all_dma" for all kernels in graph3.
graph_based_aie_tile_metrics=graph1:kernel2:all_stalls_dma; graph3:all:all_dma#Sets event trace to "all_dma" for column 4 and row 1 only.
tile_based_aie_tile_metrics={4,1}:all_dma| Option | Description |
|---|---|
-tile-based-aie-tile-metrics
|
Sets which AIE-ML tile event to store for specified tiles. |
-graph-based-aie-tile-metrics
|
Sets which AI Engine-ML tile event to store for specified buffers/graph. |
Following are examples of event tracing for AI Engine tiles using a XSDB flow:
# Sets event trace to "all_stalls_dma" for the kernel2 of graph1 and "all_dma" for all kernels in graph3.
-graph-based-aie-tile-metrics "graph1:kernel2:all_stalls_dma; graph3:all:all_dma"#Sets event trace to "all_dma" for column 4 and row 1 only.
-tile-based-aie-tile-metrics "4:1:all_dma"
