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feat(operator): add optional detailed dispatch trace #1006

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Merged
voltjia merged 2 commits into from
Oct 23, 2026
Merged

feat(operator): add optional detailed dispatch trace #1006

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f555b72
feat(operator): add optional detailed dispatch trace
zzhfz Oct 21, 2026
996e3fa
refactor(operator): reuse InfiniRT metadata descriptions
zzhfz Oct 22, 2026
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57 changes: 57 additions & 0 deletions src/operator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#include <memory>
#include <optional>
#include <stdexcept>
#include <string>
#include <string_view>
#include <tuple>
#include <type_traits>
Expand Down Expand Up @@ -238,6 +239,60 @@ void TraceOperatorCall(const CacheKey& key, const Config& config) {
config.implementation_index());
}

inline bool TraceOperatorCallsDetailedEnabled() {
static const bool enabled = [] {
const char* value = std::getenv("INFINI_OPS_TRACE_CALLS_DETAILED");
return value != nullptr && value[0] != '\0' && value[0] != '0';
}();
return enabled;
}

// Emits a best-effort detailed trace event at operator call entry.
template <typename Key>
void TraceOperatorCallDetailed(const CacheKey& key, const Config& config) {
if (!TraceOperatorCallsDetailedEnabled()) return;
try {
constexpr auto operator_name = OperatorName<Key>();
const std::size_t n = key.tensors.size();

std::string line;
line += "[INFINI_OPS_TRACE_CALLS_DETAILED] {\"operator_name\": \"";
line.append(operator_name.data(), operator_name.size());
line += "\", \"implementation\": ";
line += std::to_string(config.implementation_index());
line += ", \"tensors\": [";

for (std::size_t i = 0; i < n; ++i) {
const auto& t = key.tensors[i];
if (i > 0) line += ", ";
line += "{\"index\": ";
line += std::to_string(i);
line += ", \"device\": \"";
const auto dev = Device::StringFromType(t.device().type());
line.append(dev.data(), dev.size());
line += "\", \"dtype\": \"";
const auto dt = infini::rt::kDataTypeToDesc.at(t.dtype());
line.append(dt.data(), dt.size());
line += "\", \"shape\": [";
const std::size_t nd = t.ndim();
for (std::size_t d = 0; d < nd; ++d) {
if (d > 0) line += ",";
line += std::to_string(static_cast<unsigned long long>(t.size(d)));
}
line += "], \"strides\": [";
for (std::size_t d = 0; d < nd; ++d) {
if (d > 0) line += ",";
line += std::to_string(static_cast<long long>(t.stride(d)));
}
line += "]}";
}
line += "]}\n";
std::fprintf(stderr, "%s", line.c_str());
} catch (...) {
// Ignore allocation and serialization exceptions from tracing.
}
}

} // namespace infini::ops::detail

template <>
Expand Down Expand Up @@ -450,6 +505,7 @@ class Operator : public OperatorBase {
return CacheKeyBuilder<Key>{}(*effective_config, args...);
}();
detail::TraceOperatorCall<Key>(key, *effective_config);
detail::TraceOperatorCallDetailed<Key>(key, *effective_config);

auto it = [&]() {
HostRangeScope host_range_cache_lookup{HostRangeLayer::kCacheLookup};
Expand All @@ -465,6 +521,7 @@ class Operator : public OperatorBase {
#else
auto key = CacheKeyBuilder<Key>{}(*effective_config, args...);
detail::TraceOperatorCall<Key>(key, *effective_config);
detail::TraceOperatorCallDetailed<Key>(key, *effective_config);

auto it{cache.find(key)};

Expand Down
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