DDS is a disaggregated storage architecture for cloud data systems augmented by data processing units (DPUs). It minimizes the resource consumption and latency of storage servers while improving throughput by offloading remote storage requests to the DPU.

Details of the system can be found in our VLDB 2024 paper.

• DOCA 1.5.1
• DPDK 20.11.7.1.2 (default version in DOCA 1.5.1)
• SPDK v22.05 (included as a submodule; can be installed with Scripts/InstallSPDK.sh)

• Windows Server 2022

• Visual Studio 2019

  Make sure to select the following workloads during installation:

  • .NET desktop development (required for CBT/Nuget packages)
  • Desktop development with C++
  
  

  Also, make sure to install MSVC build tools and MSVC Spectre-mitigated libraries (MSVC v142 - VS 2019 C++ x64/x86 build tools and MSVC v142 - VS 2019 C++ x64/x86 Spectre-mitigated libs were tested).

• Windows SDK 10.0 (which comes with Visual Studio 2019)

• WDK for Windows Server 2022

• .NET SDK v5.0

This repo provides a disaggregated storage application AppDisagg where the client issues file read/write requests that will be sent to and serviced by the server.

With DDS, file read requests will be offloaded to the DPU equipped on the server machine.

On the BlueField-2 DPU, DDS can be built with Main/Build.sh.

On the server host in Windows, the server application under AppDisagg/ServerDDS can be built with Visual Studio 2019 using the DisaggStore solution.

On the client machine in Windows, the client application under AppDisagg/Client can be built with Visual Studio 2019 using the DisaggStore solution.

• Host: APR entry for the DPU must be statically configured

  • Windows: (1) Get-NetAdapter to find the index of the BF-2 CX-6 NIC, and (2) New-NetNeighbor -InterfaceIndex [BF-2 CX-6 NIC index] -IPAddress '[DPU IP]' -LinkLayerAddress '000000000100' -State Permanent
  • Linux: run Scripts/HostAddArpLinux.sh [DPU IP] 00:00:00:00:01:00

• DPU: the scalable function id in Main/NetworkConfig.json must be consistent with the created scalable function for DDS (check with devlink dev show). Other parameters in Main/StorageConfig.json and Main/NetworkConfig.json must also be properly configured.

Main/Run.sh runs DDS based on the configurations specified in Main/NetworkConfig.json and Main/StorageConfig.json.

ServerDDS.exe under the build folder runs the application server with the following arguments: [access size (bytes)] [batch size] [queue depth] [number of requests] [file size (GB)] [number of files] [number of connections] [number of completion threads].

Client.exe under the build folder runs the application client with two modes:

• Latency measurement: [access size (bytes)] [batch size] [queue depth] [number of requests] [local port] [file size (GB)]
• Throughput measurement: [access size (bytes)] [batch size] [queue depth] [number of requests] [local port] [number of connections] [file size (GB)] [number of files]

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This project is no longer under development. The owners are not accepting pull requests.

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