Ping-Pong Example
In this example, we use the Channel frontend to exchange tokens between exactly two processes, both collectively creating two fixed-size SPSC Channels (see Channels: Fixed-Size SPSC). The ping channel of a consumer pings a message to a consumer, who echoes the message back to the producer via a pong channel.
Three arguments are required for the example:
The channel capacity
The number of repetitions of a ping-pong between the producer and consumer
The size (in bytes) of a single token being ping-ponged
For example:
mpirun -n 2 ./mpi 5 10 256launches the examples to create 2 channels of capacity 5 tokens each, each token being 256 bytes large. The ping-pong is repeated 10 times.
The output shows the benchmarked execution time of the ping-pong itself at the producer:
Time: 0.012845 seconds
This example is implemented with two backends:
include/producer.hppcontains the semantics for the producer(s)include/consumer.hppcontains the semantics for the consumersource/contains variants of the main program implemented under different backends