IFRT Proxy Protocol Versions

Version 1

• Added date: 2023-12-20.
• Changes:
  • Initial version.

Version 2

• Added date: 2024-05-31.
• Changes:
  • Added support for Client::GetReadyFuture().

Version 3

• Added date: 2024-06-17.
• Changes:
  • Added native support for Client::CopyArrays().

Version 4

• Added date: 2024-06-18.
• Changes:
  • Changed the serialization of client and device attributes to use xla.ifrt.AttributeMapProto instead of map<string, xla.ifrt.proto.Variant>.

Version 5

• Added date: 2024-09-20.
• Changes:
  • Batch array deletions and destruction on client before sending to server.

Version 6

• Added date: 2024-09-30.
• Changes:
  • Added ExecuteOptions::fill_status.

Version 7

• Added date: 2024-10-01.
• Changes:
  • Added support for Client::GetAllDevices().

Version 8

• Added date: 2024-10-11.
• Changes:
  • Added support for SingleDeviceShardSemantics in Array assembly and disassembly operations.

Version 9

• Added date: 2024-10-31.
• Changes:
  • Added support for string Arrays (i.e., arrays with dtype DType::kString).

Version 10

• Added date: 2024-11-08.
• Changes:
  • MakeArrayFromHostBuffer uses client-generated array handles and sends data asynchronously.

Version kClientHandlesOptimization2

• Added date: 2024-11-19
• Changes:
  • Introduces a set of performance optimizations where the client generates array handles.

Version kClientHandlesExecutableOptimization

• Added date: 2024-11-26
• Changes:
  • Client generates array handles for execute requests.

Version kAssembleArrayFromSingleDeviceArraysWithDType

• Added date: 2025-02-11
• Changes:
  • Added support for Client::AssembleArrayFromSingleDeviceArrays that takes DType.

Version kMakeArraysFromHostBufferShards

• Added date: 2025-03-12
• Changes:
  • Added support for Client::MakeArraysFromHostBufferShards().

Version kSerDesVersioning,

• Added date: 2025-06-25
• Changes:
  • Uses IFRT SerDes versioning to all IFRT type serialization and deserialization in addition to existing IFRT Proxy protocol versioning.

Version kExecutableDevices

• Added date: 2025-07-18
• Changes:
  • Added support for LoadedExecutable::devices().

Version kGrpcAllowLargeTransferOptimizationViaSharedDirectory

• Added date: 2025-09-22
• Changes:
  • Optimize large transfers with the proxy-server and client in the same machine to by using the file system.

Version kLoadedExecutableGetCostAnalysis

• Added date: 2025-10-01
• Changes:
  • Added support for LoadedExecutable::GetCostAnalysis().

Version kLoadedExecutableGetHumanReadableProgramText

• Added date: 2025-10-01
• Changes:
  • Added support for LoadedExecutable::GetHumanReadableProgramText().

Version kMpmdLoadedExecutableMethods

• Added date: 2025-12-05
• Changes:
  • Added support for MpmdLoadedExecutable::GetMpmdAddressableDevices().
  • Added support for MpmdLoadedExecutable::GetMpmdCompiledMemoryStats().
  • Added support for MpmdLoadedExecutable::GetMpmdCostAnalysis().

Version kExecutionResult

• Added date: 2025-12-11
• Changes:
  • Added a new op LoadedExecutableFetchExecuteResult for reading execution results.

Version kDevicePlatformName

• Added date: 2025-12-13
• Changes:
  • Added Device::PlatformName() for getting the platform of a device.

Version kMakeArrayFromHostBufferWithLayout

• Added date: 2026-01-20
• Changes:
  • Added support for Client::MakeArrayFromHostBuffer with a non-null layout argument.

Version kBitcastArrays

• Added date: 2026-03-05
• Changes:
  • Added support for Client::BitcastArrays.

Version kLoadedExecutableDeleteOptions

• Added date: 2026-03-10
• Changes:
  • Added support for LoadedExecutable::SetDeleteOptions.