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Orbit: Compression & SISO Partitioning #3194

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Orbit: Compression & SISO Partitioning #3194

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10 changes: 8 additions & 2 deletions lib/Analysis/ILPBootstrapPlacementAnalysis/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,14 @@ package(

cc_library(
name = "ILPBootstrapPlacementAnalysis",
srcs = ["ILPBootstrapPlacementAnalysis.cpp"],
hdrs = ["ILPBootstrapPlacementAnalysis.h"],
srcs = [
"ILPBootstrapPlacementAnalysis.cpp",
"OpGrouping.cpp",
],
hdrs = [
"ILPBootstrapPlacementAnalysis.h",
"OpGrouping.h",
],
deps = [
"@com_google_absl//absl/status:statusor",
"@com_google_ortools//ortools/math_opt/cpp:math_opt",
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986 changes: 734 additions & 252 deletions lib/Analysis/ILPBootstrapPlacementAnalysis/ILPBootstrapPlacementAnalysis.cpp
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39 changes: 20 additions & 19 deletions lib/Analysis/ILPBootstrapPlacementAnalysis/ILPBootstrapPlacementAnalysis.h
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,23 @@ class ILPBootstrapPlacementAnalysis {
public:
enum class ScaleMode { kCKKS, kLevelOnly };

struct Options {
int bootstrapWaterline = 0;
int scaleWaterline = 0;
int scaleFactorBits = 0;
int bootstrapLevelLowerBound = 0;
// Group structurally equivalent ops so they share ILP variables (Orbit's
// compression). Grouped and ungrouped models have
// the same optimum restricted to symmetric solutions.
bool compress = true;
// Minimum number of ops per SISO partition (Orbit's delta). Partitions
// are solved independently under enumerated boundary states and stitched
// by dynamic programming.
int partitionMinSize = 100;
OpCostModel costModel;
ScaleMode scaleMode = ScaleMode::kCKKS;
};

struct NodeManagement {
Value value;
int inputLevel;
Expand All @@ -62,19 +79,8 @@ class ILPBootstrapPlacementAnalysis {
};

ILPBootstrapPlacementAnalysis(Operation* op, DataFlowSolver* solver,
int bootstrapWaterline, int scaleWaterline,
int scaleFactorBits,
int bootstrapLevelLowerBound,
const OpCostModel& costModel,
ScaleMode scaleMode)
: opToRunOn(op),
solver(solver),
bootstrapWaterline(bootstrapWaterline),
scaleWaterline(scaleWaterline),
scaleFactorBits(scaleFactorBits),
bootstrapLevelLowerBound(bootstrapLevelLowerBound),
costModel(costModel),
scaleMode(scaleMode) {}
const Options& options)
: opToRunOn(op), solver(solver), options(options) {}
~ILPBootstrapPlacementAnalysis() = default;

LogicalResult solve();
Expand Down Expand Up @@ -107,12 +113,7 @@ class ILPBootstrapPlacementAnalysis {
private:
Operation* opToRunOn;
DataFlowSolver* solver;
int bootstrapWaterline;
int scaleWaterline;
int scaleFactorBits;
int bootstrapLevelLowerBound;
OpCostModel costModel;
ScaleMode scaleMode;
Options options;
llvm::DenseMap<Operation*, bool> solution;
llvm::DenseMap<Value, int> solutionLevelBeforeBootstrap;
llvm::DenseMap<Value, int> solutionLevelAfterBootstrap;
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