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Enable circular buffer tracing for TPU #2105

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Merged
copybara-service merged 1 commit into from
Jan 9, 2026
Merged

Enable circular buffer tracing for TPU #2105

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25 changes: 23 additions & 2 deletions xprof/pywrap/profiler_plugin_impl.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,9 @@ limitations under the License.
#include <memory>
#include <optional>
#include <string>
#include <type_traits>
#include <utility>
#include <variant>
#include <vector>

#include "absl/base/call_once.h"
Expand Down Expand Up @@ -122,14 +124,33 @@ absl::Status StartContinuousProfiling(const char* service_addr,
LOG(INFO) << "StartContinuousProfiling";
TF_RETURN_IF_ERROR(tsl::profiler::ValidateHostPortPair(service_addr));
tensorflow::RemoteProfilerSessionManagerOptions options;
ToolOptions mutable_tool_options = tool_options;
mutable_tool_options["tpu_circular_buffer_tracing"] = true;
mutable_tool_options["host_tracer_level"] = 0;
mutable_tool_options["python_tracer_level"] = 0;
for (const auto& [key, value] : mutable_tool_options) {
std::visit(
[&](const auto& arg) {
using T = std::decay_t<decltype(arg)>;
if constexpr (std::is_same_v<T, std::string> ||
std::is_same_v<T, int64_t> || std::is_same_v<T, bool> ||
std::is_same_v<T, double>) {
LOG(INFO) << "ToolOption: " << key << " = " << arg;
} else {
LOG(INFO) << "ToolOption: " << key
<< " = (vector elements not printed)";
}
},
value);
}
bool is_cloud_tpu_session;
// Even though the duration is set to 2 seconds, the profiling will continue
// until GetSnapshot is called, it is only done since
// GetRemoteSessionManagerOptionsLocked requires a duration.
const int32_t kContinuousProfilingdurationMs = 2000;
options = tsl::profiler::GetRemoteSessionManagerOptionsLocked(
service_addr, "", "", false, kContinuousProfilingdurationMs, tool_options,
&is_cloud_tpu_session);
service_addr, "", "", false, kContinuousProfilingdurationMs,
mutable_tool_options, &is_cloud_tpu_session);
return tsl::profiler::StartContinuousProfiling(service_addr, options);
}

Expand Down