CS8803 High Performance Communication, Fall 2006

Assignment #2

DUE: Friday, September 22

Slide hard copy under my office door, or via email by 12:00pm

 

 

 

1. If you want your socket application to benefit from the IB transport,
how might you need to modify it? Describe all possible things your should
consider/modify, and explain why.

 

 

2. The source code directory for the userspace rdma library contains an
example rping.c. Answer the following questions:

What does rping.c do?

The control block structure contains a semaphore. Explain when and how is
this semaphore used?

The procedure rping_setup_buffers creates and registers several kinds of
memory regions. Explain what is the purpose of each of these memory
regions and what is their size?

note: rping.c is in /net/hp92/mwolf/IB/OFED-1.0-SRC/openib-1.0/src/userspace/librdmacm/examples/