Hi, I'm using Open MPI in a real time rendering system and I need an accurate latency control.
consider the 'Nagle' optimization implemented in the TCP/IP protocol, which delays small packets for a short time period to possibly combine them with successive packets generating network friendly packet sizes. This optimization can result in a better throughput when lots of small packets are sent, but can also lead to considerable latencies, if packets get delayed several times. For example, I want to turn the Nagle optimization on for sockets in which updated scene data is streamed to the clients, as throughput is the main issue here. On the other hand, I want turn it off for e.g. sockets used to send tiles to the clients, as this has to be done with an absolute minimum of latency. Can I do it with OpenMPI? Am I using the the wrong tool? Thanks in advance Biagio Cosenza an italian MSc student Università di Salerno
