ywcb00 commented on a change in pull request #1574:
URL: https://github.com/apache/systemds/pull/1574#discussion_r841091465
##########
File path:
src/main/java/org/apache/sysds/runtime/controlprogram/federated/FederationMap.java
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@@ -226,11 +228,27 @@ public FederatedRequest broadcast(ScalarObject scalar) {
// multi-threaded block slicing and federation request creation
FederatedRequest[] ret = new FederatedRequest[ix.length];
Arrays.setAll(ret,
- i -> new FederatedRequest(RequestType.PUT_VAR,
lineageTrace, id,
- cb.slice(ix[i][0], ix[i][1], ix[i][2],
ix[i][3], isFrame ? new FrameBlock() : new MatrixBlock())));
+ i -> sliceBroadcastBlock(ix[i], id, cb, lineageItem,
isFrame));
return ret;
}
+ private FederatedRequest sliceBroadcastBlock(int[] ix, long id,
CacheBlock cb, LineageItem objLi, boolean isFrame) {
+ LineageItem li = null;
+ if(objLi != null) {
+ final String scalarCPOSuffix =
InstructionUtils.concatOperands(
+ DataType.SCALAR.name(), ValueType.INT64.name(),
String.valueOf(true));
+ // manually create a lineage item for indexing to
complete the lineage trace for slicing
+ li = new LineageItem(RightIndex.OPCODE, new
LineageItem[]{objLi,
+ new
LineageItem(InstructionUtils.concatOperandParts(String.valueOf(ix[0] + 1),
scalarCPOSuffix)),
+ new
LineageItem(InstructionUtils.concatOperandParts(String.valueOf(ix[1] + 1),
scalarCPOSuffix)),
+ new
LineageItem(InstructionUtils.concatOperandParts(String.valueOf(ix[2] + 1),
scalarCPOSuffix)),
+ new
LineageItem(InstructionUtils.concatOperandParts(String.valueOf(ix[3] + 1),
scalarCPOSuffix))});
Review comment:
Thank you for the advice @phaniarnab. I modified it to create CPOperand
for each index and derive the LineageItem from the CPOperands. However, using
the getLineage() method to obtain the LineageItems is not that easy, as we
would need the ExecutionContext for that.
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