Fletcher C++ Run-time Library

The Fletcher C++ Run-time Library enables support for Fletcher-based accelerated applications.

Build & install

Requirements

• Apache Arrow 7.0+ C++ run-time and development headers.
• A C++17 compliant compiler
• CMake 3.14

Build

mkdir build
cmake ..
make
sudo make install

Example usage

Include:

 {c++}
#include <fletcher/api.h>

Example snippet:

 {c++}
using fletcher::Platform;
using fletcher::Context;
using fletcher::Kernel;
 
// Given a RecordBatch:
std::shared_ptr<arrow::RecordBatch> batch = ...
 
std::shared_ptr<Platform> platform;
std::shared_ptr<Context> context;
 
Platform::Make(&platform);                // Create an interface to an auto-detected FPGA Platform.
platform->Init();                         // Initialize the Platform.
 
Context::Make(&context, platform);        // Create a Context for our data on the Platform.
context->QueueRecordBatch(number_batch);  // Queue the RecordBatch to the Context.
context->Enable();                        // Enable the Context, (potentially transferring the data to FPGA).
 
Kernel kernel(context);                   // Set up an interface to the Kernel, supplying the Context.
kernel.Start();                           // Start the kernel.
kernel.PollUntilDone();                   // Wait for the kernel to finish.
 
kernel.GetReturn(&result);                // Obtain the result.

Documentation

C++ API Documentation