use of org.apache.sysml.hops.codegen.template.CPlanOpRewriter in project incubator-systemml by apache.
the class SpoofCompiler method cleanupCPlans.
/**
* Cleanup generated cplans in order to remove unnecessary inputs created
* during incremental construction. This is important as it avoids unnecessary
* redundant computation.
*
* @param memo memoization table
* @param cplans set of cplans
*/
private static HashMap<Long, Pair<Hop[], CNodeTpl>> cleanupCPlans(CPlanMemoTable memo, HashMap<Long, Pair<Hop[], CNodeTpl>> cplans) {
HashMap<Long, Pair<Hop[], CNodeTpl>> cplans2 = new HashMap<>();
CPlanOpRewriter rewriter = new CPlanOpRewriter();
CPlanCSERewriter cse = new CPlanCSERewriter();
for (Entry<Long, Pair<Hop[], CNodeTpl>> e : cplans.entrySet()) {
CNodeTpl tpl = e.getValue().getValue();
Hop[] inHops = e.getValue().getKey();
// remove invalid plans with null inputs
if (Arrays.stream(inHops).anyMatch(h -> (h == null)))
continue;
// perform simplifications and cse rewrites
tpl = rewriter.simplifyCPlan(tpl);
tpl = cse.eliminateCommonSubexpressions(tpl);
// update input hops (order-preserving)
HashSet<Long> inputHopIDs = tpl.getInputHopIDs(false);
inHops = Arrays.stream(inHops).filter(p -> p != null && inputHopIDs.contains(p.getHopID())).toArray(Hop[]::new);
cplans2.put(e.getKey(), new Pair<>(inHops, tpl));
// remove invalid plans with column indexing on main input
if (tpl instanceof CNodeCell || tpl instanceof CNodeRow) {
CNodeData in1 = (CNodeData) tpl.getInput().get(0);
boolean inclRC1 = !(tpl instanceof CNodeRow);
if (rHasLookupRC1(tpl.getOutput(), in1, inclRC1) || isLookupRC1(tpl.getOutput(), in1, inclRC1)) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed cplan due to invalid rc1 indexing on main input.");
}
} else if (tpl instanceof CNodeMultiAgg) {
CNodeData in1 = (CNodeData) tpl.getInput().get(0);
for (CNode output : ((CNodeMultiAgg) tpl).getOutputs()) if (rHasLookupRC1(output, in1, true) || isLookupRC1(output, in1, true)) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed cplan due to invalid rc1 indexing on main input.");
}
}
// remove invalid lookups on main input (all templates)
CNodeData in1 = (CNodeData) tpl.getInput().get(0);
if (tpl instanceof CNodeMultiAgg)
rFindAndRemoveLookupMultiAgg((CNodeMultiAgg) tpl, in1);
else
rFindAndRemoveLookup(tpl.getOutput(), in1, !(tpl instanceof CNodeRow));
// remove invalid row templates (e.g., unsatisfied blocksize constraint)
if (tpl instanceof CNodeRow) {
// check for invalid row cplan over column vector
if (((CNodeRow) tpl).getRowType() == RowType.NO_AGG && tpl.getOutput().getDataType().isScalar()) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed invalid row cplan w/o agg on column vector.");
} else if (OptimizerUtils.isSparkExecutionMode()) {
Hop hop = memo.getHopRefs().get(e.getKey());
boolean isSpark = DMLScript.rtplatform == RUNTIME_PLATFORM.SPARK || OptimizerUtils.getTotalMemEstimate(inHops, hop, true) > OptimizerUtils.getLocalMemBudget();
boolean invalidNcol = hop.getDataType().isMatrix() && (HopRewriteUtils.isTransposeOperation(hop) ? hop.getDim1() > hop.getRowsInBlock() : hop.getDim2() > hop.getColsInBlock());
for (Hop in : inHops) invalidNcol |= (in.getDataType().isMatrix() && in.getDim2() > in.getColsInBlock());
if (isSpark && invalidNcol) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed invalid row cplan w/ ncol>ncolpb.");
}
}
}
// remove cplan w/ single op and w/o agg
if ((tpl instanceof CNodeCell && ((CNodeCell) tpl).getCellType() == CellType.NO_AGG && TemplateUtils.hasSingleOperation(tpl)) || (tpl instanceof CNodeRow && (((CNodeRow) tpl).getRowType() == RowType.NO_AGG || ((CNodeRow) tpl).getRowType() == RowType.NO_AGG_B1 || ((CNodeRow) tpl).getRowType() == RowType.ROW_AGG) && TemplateUtils.hasSingleOperation(tpl)) || TemplateUtils.hasNoOperation(tpl)) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed cplan with single operation.");
}
// remove cplan if empty
if (tpl.getOutput() instanceof CNodeData) {
cplans2.remove(e.getKey());
if (LOG.isTraceEnabled())
LOG.trace("Removed empty cplan.");
}
// rename inputs (for codegen and plan caching)
tpl.renameInputs();
}
return cplans2;
}
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